1
|
Lee JY, Bu SH, Song E, Cho S, Yu S, Kim J, Kym S, Seo KW, Kwon KT, Kim JY, Kim S, Ahn K, Jung N, Lee Y, Jung Y, Hwang C, Park SW. Safety and Effectiveness of Regdanvimab for COVID-19 Treatment: A Phase 4 Post-marketing Surveillance Study Conducted in South Korea. Infect Dis Ther 2023; 12:2417-2435. [PMID: 37833467 PMCID: PMC10600078 DOI: 10.1007/s40121-023-00859-1] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 08/15/2023] [Indexed: 10/15/2023] Open
Abstract
INTRODUCTION Regdanvimab, a neutralising monoclonal antibody (mAb) against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), received approval for the treatment of coronavirus disease 2019 (COVID-19) in South Korea in 2021. The Ministry of Food and Drug Safety in South Korea mandate that new medications be re-examined for safety and effectiveness post-approval in at least 3000 individuals. This post-marketing surveillance (PMS) study was used to evaluate the safety and effectiveness of regdanvimab in real-world clinical care. METHODS This prospective, multicentre, phase 4 PMS study was conducted between February 2021 and March 2022 in South Korea. Eligible patients were aged ≥ 18 years with confirmed mild COVID-19 at high risk of disease progression or moderate COVID-19. Patients were hospitalised and treated with regdanvimab (40 mg/kg, day 1) and then monitored until discharge, with a follow-up call on day 28. Adverse events (AEs) were documented, and the COVID-19 disease progression rate was used to measure effectiveness. RESULTS Of the 3123 patients with COVID-19 infection identified, 3036 were eligible for inclusion. Approximately 80% and 5% of the eligible patients were diagnosed with COVID-19 during the delta- and omicron-dominant periods, respectively. Median (range) age was 57 (18-95) years, and 50.6% of patients were male. COVID-19 severity was assessed before treatment, and high-risk mild and moderate COVID-19 was diagnosed in 1030 (33.9%) and 2006 (66.1%) patients, respectively. AEs and adverse drug reactions (ADRs) were experienced by 684 (22.5%) and 363 (12.0%) patients, respectively. The most common ADR was increased liver function test (n = 62, 2.0%). Nine (0.3%) patients discontinued regdanvimab due to ADRs. Overall, 378 (12.5%) patients experienced disease progression after regdanvimab infusion, with extended hospitalisation/re-admission (n = 300, 9.9%) as the most common reason. Supplemental oxygen was required by 282 (9.3%) patients. Ten (0.3%) patients required intensive care monitoring and 3 (0.1%) died due to COVID-19. CONCLUSION This large-scale PMS study demonstrated that regdanvimab was effective against COVID-19 progression and had an acceptable safety profile when used in real-world clinical practice.
Collapse
Affiliation(s)
- Ji Yeon Lee
- Keimyung University Daegu Dongsan Hospital, Daegu, Republic of Korea
| | - Seon Hee Bu
- Seoul Metropolitan City Bukbu Hospital, Seoul, Republic of Korea
| | - EunHyang Song
- Seoul Metropolitan City Seobuk Hospital, Seoul, Republic of Korea
| | | | - Sungbong Yu
- Bagae General Hospital, Pyeongtaek, Republic of Korea
| | - Jungok Kim
- Chungnam National University Sejong Hospital, Sejong, Republic of Korea
| | - Sungmin Kym
- Chungnam National University Sejong Hospital, Sejong, Republic of Korea
| | - Kwang Won Seo
- Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Ki Tae Kwon
- School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Jin Yong Kim
- Incheon Medical Centre, Incheon, Republic of Korea
| | | | | | | | - Yeonmi Lee
- Celltrion, Inc., Incheon, Republic of Korea
| | | | | | - Sang Won Park
- Department of Internal Medicine, Seoul National University Boramae Medical Centre, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea.
| |
Collapse
|
2
|
Seo KW, Do KH, Jung CM, Lee SW, Lee YJ, Lim SK, Lee WK. Comparative genetic characterisation of third-generation cephalosporin-resistant Escherichia coli isolated from integrated and conventional pig farm in Korea. J Glob Antimicrob Resist 2023; 34:74-82. [PMID: 37394034 DOI: 10.1016/j.jgar.2023.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 06/09/2023] [Accepted: 06/26/2023] [Indexed: 07/04/2023] Open
Abstract
OBJECTIVES Pig-farming systems consist of integrated or conventional farms, and many antimicrobials are used to treat bacterial infections. The objective of this study was to compare characteristics of third-generation cephalosporin resistance and extended-spectrum β-lactamase (ESBL)/pAmpC β-lactamase-producing Escherichia coli between integrated and conventional farms. METHODS Third-generation cephalosporin-resistant E. coli was collected from integrated and conventional pig farms from 2021 to 2022. Polymerase chain reaction and DNA sequencing were performed for the detection of β-lactamase-encoding genes, molecular analysis, and identification of genetic relationships. To determine the transferability of β-lactamase genes, conjugation assays were conducted. RESULTS Antimicrobial resistance rates were higher in conventional farms than in integrated farms; ESBL- and pAmpC-lactamase-producing E. coli rates were higher in conventional farms (9.8%) than in integrated farms (3.4%). Fifty-two (6.5%) isolates produced ESBL/pAmpC β-lactamase genes. Isolates from integrated farms harboured CTX-15 (3 isolates), CTX-55 (9 isolates), CTX-229 (1 isolate), or CMY-2 (1 isolate) genes; isolates from conventional farms harboured CTX-1 (1 isolate), CTX-14 (6 isolates), CTX-15 (2 isolates), CTX-27 (3 isolates), CTX-55 (14 isolates), CTX-229 (1 isolate), and CMY-2 (11 isolates) genes. Of the 52 ESBL/pAmpC β-lactamase-producing E. coli isolates, class 1 integrons with 11 different gene cassette arrangements were detected in 39 (75.0%) isolates, and class 2 integrons were detected in 3 isolates. The most common sequence type in both integrated and conventional farms was ST5229, followed by ST101, and then ST10. CONCLUSION Third-generation cephalosporin-resistant patterns and molecular characteristics differed between integrated and conventional farms. Our findings suggest that continuous monitoring of third-generation cephalosporin resistance on pig farms is necessary to prevent the dissemination of resistant isolates.
Collapse
Affiliation(s)
- Kwang Won Seo
- College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - Kyung-Hyo Do
- College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - Chang Min Jung
- College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea; Onnuri Animals Hospital, Cheonan, Korea
| | - Seong Won Lee
- College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea; Boehringer Ingelheim Animal Health Korea Ltd., Seoul, Korea
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu, Korea
| | - Suk-Kyung Lim
- Animal and Plant Quarantine Agency, Ministry of Agriculture, Food and Rural Affairs, Gimcheon, Korea
| | - Wan-Kyu Lee
- College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea; GutBiomeTech, Cheongju, Korea.
| |
Collapse
|
3
|
Do KH, Seo KW, Byun JW, Lee WK. Relationship between virulence factors and antimicrobial resistance genes of pathogenic Escherichia coli from diarrheic weaned piglets. Res Vet Sci 2022; 150:137-143. [PMID: 35830753 DOI: 10.1016/j.rvsc.2022.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 04/07/2022] [Accepted: 05/01/2022] [Indexed: 11/28/2022]
Abstract
A total of 690 pathogenic Escherichia (E.) coli isolates from weaned piglets were examined for antimicrobial resistance phenotypes, resistance genes, and virulence gene profiles. Also, 29 enterotoxigenic E. coli (ETEC) and 35 Shiga-toxin producing E. coli (STEC) isolates were analyzed using multi-locus sequence typing (MLST). Comparisons of the associations between antimicrobial resistance phenotypes, resistance genes, and virulence genes were performed separately by assessing odds ratio (OR). Although majorities of associations were not confirmed however, we found that associations between specific virulence factors-antimicrobial resistance. F18 encoding isolates showed association with resistance to cefazolin (OR = 3.08) and cefoxitin (OR = 3.65), and also with antimicrobial resistance gene mcr-3 (OR = 4.58). There was a high correlation between F4-STb (OR = 13.56), F4-LT (OR = 8.77), F4-EAST-I (OR = 4.97), and F18-Stx2e (OR = 3.83). Most of ETEC (21 of 29, 72.4%) isolates were assigned to ST100, and 20 of 35 STEC isolates (57.1%) were ST1. There were 5 clusters, and each cluster showed specific antimicrobial resistance patterns. Cluster I showed resistance to gentamicin, streptomycin, neomycin, nalidixic acid, ciprofloxacin, norfloxacin, trimethoprim / sulfamethoxazole, and tetracyclines whereas, cluster V showed resistance to ampicillin, amoxicillin / clavulanic acid, cephalothin, cefoxitin, cefazolin, norfloxacin, and colistin. Although there is need to do more experiments to clarify why certain virulence factors showed relationship with antimicrobial resistance, it is clear that there is a significant association between specific virulence genes and antimicrobial resistance in E. coli from weaned piglets with enteric colibacillosis in Korea.
Collapse
Affiliation(s)
- Kyung-Hyo Do
- Laboratory of Veterinary Bacteriology and Infectious Diseases, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Kwang Won Seo
- Korea Zoonosis Research Institute, Jeonbuk National University, Iksan, Jeonbuk 54531, Republic of Korea
| | - Jae-Won Byun
- Animal Disease Diagnostic Division, Animal and Plant Quarantine Agency, Gimcheon, Gyeongbuk 39660, Republic of Korea
| | - Wan-Kyu Lee
- Laboratory of Veterinary Bacteriology and Infectious Diseases, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
| |
Collapse
|
4
|
Kim DG, Kim K, Bae SH, Jung HR, Kang HJ, Lee YJ, Seo KW, Lee YJ. Comparison of antimicrobial resistance and molecular characterization of Escherichia coli isolates from layer breeder farms in Korea. Poult Sci 2021; 101:101571. [PMID: 34844113 PMCID: PMC8633676 DOI: 10.1016/j.psj.2021.101571] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 01/06/2023] Open
Abstract
In Korea, 4 big layer companies that possess one grandparent and 3 parent stocks are in charge of 100% of the layer chicken industry. In this study, we investigated the antimicrobial resistance of commensal 578 E. coli isolated from 20 flocks of 4-layer breeder farms (A, B, C, and D), moreover, compared the characteristics of their resistance and virulence genes. Isolates from farms B and D showed significantly higher resistance to the β-lactam antimicrobials (amoxicillin, ampicillin, and 1st-, 2nd-, and 3rd-generation cephalosporins). However, resistance to ciprofloxacin, nalidixic acid, and tetracycline was significantly higher in the isolates from farm A (P < 0.05). Interestingly, the isolates from farm C showed significantly lower resistance to most antimicrobials tested in this study. The isolates from farms B, C, and D showed the high multiple resistance to the 3 antimicrobial classes. Furthermore, the isolates from farm A showed the highest multiple resistance against the 5 classes. Among the 412 β-lactam-resistant isolates, 123 (29.9%) carried blaTEM-1, but the distribution was significantly different among the farms from 17.5% to 51.4% (P < 0.05). Similarly, the most prevalent tetracycline resistance gene in the isolates from farms B, C, and D was tetA (50.0–77.0%); however, the isolates from farm A showed the highest prevalence in tetB (70.6%). The distribution of quinolone (qnrB, qnrD, and qnrS) and sulfonamide (su12)-resistant genes were also significantly different among the farms but that of chloramphenicol (catA1)- and aminoglycoside (aac [3]-II, and aac [6′]-Ib)-resistant genes possessed no significant difference among the farms. Moreover, the isolates from farm C showed significantly higher prevalence in virulence genes (iroN, ompT, hlyF, and iss) than the other 3 farms (P < 0.05). Furthermore, the phenotypic and genotypic characteristics of E. coli isolates were significantly different among the farms, and improved management protocols are required to control of horizontal and vertical transmission of avian disease, including the dissemination of resistant bacteria in breeder flocks.
Collapse
Affiliation(s)
- Dong Gyu Kim
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Koeun Kim
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Sung Hyun Bae
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Hye-Ri Jung
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Hyo Jung Kang
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Yu Jin Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Kwang Won Seo
- Laboratory of Veterinary Bacteriology and Infectious Diseases, College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Republic of Korea
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea.
| |
Collapse
|
5
|
Kim YB, Yoon S, Seo KW, Shim JB, Noh EB, Lee YJ. Detection of Linezolid-Resistant Enterococcus faecalis and Enterococcus faecium Isolates from the Layer Operation System in Korea. Microb Drug Resist 2021; 27:1443-1449. [PMID: 34297629 DOI: 10.1089/mdr.2020.0028] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Linezolid (LNZ) is one of the most important antimicrobial agents against infections caused by gram-positive bacteria, including enterococci. In a layer operation system, antimicrobial resistance can be transferred to commercial layers via the fecal-oral route. This study investigated the presence and distribution of LNZ-resistant Enterococcus faecalis and Enterococcus faecium in a layer operation system. Among 117 E. faecalis and 154 E. faecium, 10 (8.5%) E. faecalis and 5 (3.2%) E. faecium isolates showed resistance to LNZ and chloramphenicol, and they exhibited multidrug resistance against 5 or more classes of antimicrobial agents. Among the resistant isolates, 9 (90.0%) and 2 (20.0%) E. faecalis harbored optrA and cfr genes, respectively. The optrA and fexA genes were not detected in five LNZ-resistant E. faecium. None of the 15 LNZ-resistant isolates harbored the fexA gene, and no mutations were observed in the genes encoding domain V of 23S ribosomal RNA (rRNA) and ribosomal proteins L3 (rplC) and L4 (rplD). Transferability was identified in three of the nine optrA-positive LNZ-resistant isolates. The tetM, tetL, and ermB genes were cotransferred with the optrA gene in all optrA-positive transconjugants. The results indicate that optrA is well-distributed in E. faecalis, implying a greater level of transferability. Thus, enhanced surveillance efforts are needed to monitor the emergence and spread of optrA in enterococci in layer operation system.
Collapse
Affiliation(s)
- Yeong Bin Kim
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu, Republic of Korea
| | - Sunghyun Yoon
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu, Republic of Korea
| | - Kwang Won Seo
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Starkville, Mississippi State, USA
| | - Jong Bo Shim
- Korean Poultry TS Co., Ltd., Incheon, Republic of Korea
| | - Eun Bi Noh
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu, Republic of Korea
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu, Republic of Korea
| |
Collapse
|
6
|
Chae G, Jun JB, Jung HS, Park CY, Kim JH, Kang BJ, Kang HH, Ra SW, Seo KW, Jegal Y, Ahn JJ, Park SH, Lee T. Histiocytic pleural effusion: the strong clue to malignancy. World J Surg Oncol 2021; 19:180. [PMID: 34134706 PMCID: PMC8210362 DOI: 10.1186/s12957-021-02296-1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 06/09/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND There have been many studies on the clinical characteristics of neutrophilic, lymphocytic, and/or eosinophilic pleural effusion. While caring for patients with pleural effusion, we found that histiocytic pleural effusion (HisPE) was not uncommon. However, few studies have explored HisPE. The purpose of the present study was to determine the clinical characteristics and etiologies of HisPE. METHODS In this retrospective study, HisPE was defined as pleural fluid white blood cells comprised of ≥ 50% histiocytes. Using a clinical data warehouse, patients with HisPE among all patients aged >18 years who underwent thoracentesis and pleural fluid analysis between January 2010 and December 2019 at Ulsan University Hospital were enrolled. A total of 295 (9.0%) of 3279 patients who underwent thoracentesis were identified as HisPE patients. Among them, 201 with exudative HisPE were included. Clinical characteristics and etiologies were extracted from medical records and analyzed. RESULTS Among the 201 patients with exudative HisPE, the major causes were malignant pleural effusion (n = 102 [50.7%]), parapneumonic effusion (n = 9 [4.5%]), and tuberculous pleurisy (n = 9 [4.5%]). In the 102 patients with malignant pleural effusion, the main types of cancer were lung (n = 42 [41.2%]), breast (n = 16 [15.7%]), and stomach cancer (n = 11 [10.8%]). Among lung cancers, adenocarcinoma (n = 34 [81.0%]) was the most common histology. CONCLUSIONS The leading cause of exudative HisPE was malignancy, particularly lung cancer. Physicians should consider the possibility of malignant disease if histiocytes are predominantly present in pleural effusion.
Collapse
Affiliation(s)
- Ganghee Chae
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae-Bum Jun
- Division of Infectious Diseases, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Hwa Sik Jung
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Chui Yong Park
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jin Hyoung Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, 877 Bangeojinsunhwando-ro, Dong-gu, Ulsan, 44033, Korea
| | - Byung Ju Kang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, 877 Bangeojinsunhwando-ro, Dong-gu, Ulsan, 44033, Korea
| | - Hyeon Hui Kang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, 877 Bangeojinsunhwando-ro, Dong-gu, Ulsan, 44033, Korea
| | - Seung Won Ra
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, 877 Bangeojinsunhwando-ro, Dong-gu, Ulsan, 44033, Korea
| | - Kwang Won Seo
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, 877 Bangeojinsunhwando-ro, Dong-gu, Ulsan, 44033, Korea
| | - Yangjin Jegal
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, 877 Bangeojinsunhwando-ro, Dong-gu, Ulsan, 44033, Korea
| | - Jong Joon Ahn
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, 877 Bangeojinsunhwando-ro, Dong-gu, Ulsan, 44033, Korea
| | - Sang Hyuk Park
- Department of Laboratory Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Taehoon Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, 877 Bangeojinsunhwando-ro, Dong-gu, Ulsan, 44033, Korea.
| |
Collapse
|
7
|
Jo W, Seo KW, Jung HS, Park CY, Kang BJ, Kang HH, Ra SW, Jegal Y, Ahn JJ, Park SE, Jung MS, Park JI, Park EJ, Sim CS, Kim TB, Lee T. Clinical Importance of Work-Exacerbated Asthma: Findings From a Prospective Asthma Cohort in a Highly Industrialized City in Korea. Allergy Asthma Immunol Res 2021; 13:256-270. [PMID: 33474860 PMCID: PMC7840872 DOI: 10.4168/aair.2021.13.2.256] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 08/13/2020] [Accepted: 08/20/2020] [Indexed: 11/20/2022]
Abstract
PURPOSE Work-related asthma (WRA) occupies about 10%-30% of all asthma cases. Among 2 subtypes of WRA (occupational asthma [OA] and work-exacerbated asthma [WEA]), the rate of WEA has been reported to increase recently. WRA is described as having worse characteristics than non-WRA (NWRA), while WEA is known to show similar severity to OA in terms of symptoms and exacerbations. However, these data were mainly based on indirect surveys. Ulsan is a highly industrialized city in Korea; therefore, it is estimated to have a high incidence of WRA. This study aimed to identify the characteristics of WRA in the city. METHODS This was a prospective asthma cohort study of individuals diagnosed with asthma and treated at Ulsan University Hospital between Jan 2015 and Dec 2016. Baseline characteristics and work-related inquiry (9 questionnaires) were investigated at enrollment. Various severity indices and job change were then investigated for the longitudinal analysis at 12 months after enrollment. RESULTS In total, 217 asthma patients completed the study. WRA accounted for 17% (36/217), with an equal number of WEA and OA (18 patients each). Before the work-related survey, only 33% (n = 12) of WRA patients (22% [4/18] of WEA and 44% [8/18] of OA) were diagnosed with WRA by the attending physicians. Compared to the NWRA group and the OA subgroup, the WEA subgroup had more outpatient visits, more oral corticosteroids prescriptions, and trends of low asthma control test scores and severe asthma. The rate of job change was markedly lower in the WEA subgroup than in the OA subgroup (20% vs. 5%). CONCLUSIONS The overall prevalence of WRA (17%) was similar to those of previous studies, but the share of WEA was high (50% of WRA). WEA was more severe than OA or NWRA. The possible reason for this severity is ongoing workplace exposure.
Collapse
Affiliation(s)
- Woori Jo
- Department of Internal Medicine, Metro Silver Hospital, Changwon, Korea
| | - Kwang Won Seo
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Hwa Sik Jung
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Chui Yong Park
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Byung Ju Kang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Hyeon Hui Kang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Seung Won Ra
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Yangjin Jegal
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Jong Joon Ahn
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Soon Eun Park
- Department of Anesthesiology and Pain Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Moon Sik Jung
- Department of Anesthesiology and Pain Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Ju Ik Park
- Department of Anesthesiology and Pain Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Eun Ji Park
- Medical Information Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Chang Sun Sim
- Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Tae Bum Kim
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Taehoon Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
| |
Collapse
|
8
|
Yoon S, Son SH, Kim YB, Seo KW, Lee YJ. Molecular characteristics of optrA-carrying Enterococcus faecalis from chicken meat in South Korea. Poult Sci 2020; 99:6990-6996. [PMID: 33248615 PMCID: PMC7704738 DOI: 10.1016/j.psj.2020.08.062] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 03/23/2020] [Revised: 08/14/2020] [Accepted: 08/19/2020] [Indexed: 02/06/2023] Open
Abstract
The purpose of this study was to identify the genetic environment of optrA gene in linezolid (LZD)-resistant Enterococcus faecalis from chicken meat and to describe the probable mechanism of dissemination of the optrA gene through plasmid or chromosomal integration. Whole genome sequencing and analysis revealed that all 3 E. faecalis isolates confirmed as LZD- and chloramphenicol-resistant carried fexA adjacent to the optrA gene as well as a variety of resistance genes for macrolides, tetracyclines, and aminoglycosides, simultaneously. But, the other genes conferring LZD resistance, cfr and poxtA, were not detected in those strains. Two isolates harboring the optrA gene in their chromosomal DNA showed >99% similarity in arrangement to the transposon Tn6674 and the transposase genes, tnpA, tnpB, and tnpC and were located in the first open reading frame for transposase. One isolate harboring an optrA-carrying plasmid also showed >99% similarity with the previously reported pE439 plasmid but had 2 amino acid changes (Thr96Lys and Tyr160Asp) and a higher minimum inhibitory concentration against LZD of 16 mg/L than that of pE439 (8 mg/L). Mobile genetic elements such as transposons or plasmids flanking the optrA gene conduct a crucial role in the dissemination of antimicrobial resistance genes. Further investigations are required to identify the way by which optrA is integrated into chromosomal DNA and plasmids.
Collapse
Affiliation(s)
- Sunghyun Yoon
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Se Hyun Son
- Animal Disease Diagnostic Division, Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Yeong Bin Kim
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Kwang Won Seo
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS 39762, USA
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea.
| |
Collapse
|
9
|
Abstract
A large number of antimicrobials are used for the treatment of bacterial infections, and the emergence of antimicrobial-resistant Escherichia coli (E. coli) in livestock and the transfer of resistant isolates to humans poses a serious potential risk to public health. In particular, broiler parent stock produce thousands of eggs for commercial broiler chickens and can transfer antimicrobial-resistant bacteria and drug-resistance genes to chicks. This study was conducted to investigate the prevalence and characteristics of third-generation cephalosporin-resistant and extended-spectrum β-lactamases (ESBL)-producing E. coli isolated from the broiler parent stock in Korea. Among 51 cefotaxime-resistant E. coli isolates, 45 (88.2%) isolates were identified as multidrug resistant and 21 isolates showed phenotypic and genotypic characteristics of CTX-M-producing E. coli. The CTX-M genes CTX-M-14, CTX-M-15, CTX-M-1, and CTX-M-1 were detected in 10, 7, 3, and 1 isolates, respectively. ISEcp1 or IS26 + ISEcp1 were identified upstream of all CTX-M-type genes, and orf477 and IS903 were detected downstream of 9 and 10 CTX-M-type genes, respectively. Thirteen (61.9%) of the 21 CTX-M-producing E. coli isolates harbored class 1 integrons with 4 different gene cassette arrangements. Among the plasmid replicons, CTX-M-1 was located on I1, F, and FIB; CTX-M-14 on F and FII; CTX-M-15 on FII, FIA, and FIB; and CTX-M-65 on FIB. This is the first study to investigate the presence and distribution of third-generation cephalosporin-resistant and CTX-M-producing E. coli isolated from the broiler parent stock level in Korea, and the results indicate that comprehensive surveillance and persistent monitoring systems in broiler parent stock farms are necessary to prevent the dissemination of resistant isolates.
Collapse
Affiliation(s)
- Kwang Won Seo
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea; Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, Mississippi, 39762, USA
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea.
| |
Collapse
|
10
|
Cheon J, Kim C, Park EJ, Ock M, Lee H, Ahn JJ, Jegal Y, Seo KW, Park SE, Han I, Kang H, An M, Park J, Park GM, Jun JB, Lee T. Active tuberculosis risk associated with malignancies: an 18-year retrospective cohort study in Korea. J Thorac Dis 2020; 12:4950-4959. [PMID: 33145069 PMCID: PMC7578502 DOI: 10.21037/jtd.2020.02.50] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background Active tuberculosis (TB) develops in approximately 10% of people with a latent tuberculosis infection (LTBI). TB guidelines recommend that LTBI screening and treatments target high-risk patients. Malignancies are not universally considered a high-risk factor for active TB. This study aimed to determine the degrees to which active TB risk was associated with various cancers in a Korean population. Methods This study involved patients aged ≥20 years who were diagnosed with cancer at Ulsan University Hospital (UUH) from January 2000 to December 2014 and individuals who visited UUH for health screening and were age- and sex-matched randomly with cases in a 1:2 ratio. Using retrospective cohort study, the development of bacteriologically confirmed TB (BCTB) within 3 years after enrollment was investigated. The relative risks of BCTB were estimated using incidence rate ratios (IRRs) and a Poisson regression analysis. Results During the study period, 380 of 34,783 cancer patients and 79 of 69,566 control subjects developed BCTB, yielding respective incidence rates of 535 and 37/100,000 person-years, respectively. In all cancer cases, the IRR of BCTB was 14.30, and especially high rates were associated with the following cancers: esophageal cancer (74.72), multiple myeloma (70.76), lung cancer (50.35), pancreatic cancer (46.04), leukemia (40.45), head and neck cancer (24.60), and lymphoma (22.67). Conclusions The incidence of active TB was higher in cancer patients than in control subjects. In particular, lung cancer, esophageal cancer, pancreatic cancer, hematologic malignancy and head and neck cancer were identified as high-risk factors for active TB, as indicated by IRRs of 20-75. These findings suggest that patients with high-risk cancers should be targeted for LTBI screening and treatment.
Collapse
Affiliation(s)
- Jaekyung Cheon
- Division of Hematology-Oncology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Changyoung Kim
- Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Eun Ji Park
- Medical Information Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Minsu Ock
- Department of Preventive Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Hyeji Lee
- Department of Emergency Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Jong Joon Ahn
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Yangjin Jegal
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Kwang Won Seo
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Soon Eun Park
- Department of Anesthesiology and Pain Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Ilsang Han
- Department of Anesthesiology and Pain Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Hojun Kang
- Department of Anesthesiology and Pain Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Mingi An
- Department of Anesthesiology and Pain Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Jongha Park
- Division of Nephrology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Gyung-Min Park
- Division of Cardiology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Jae-Bum Jun
- Division of Infectious Diseases, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Taehoon Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| |
Collapse
|
11
|
Seo KW, Lee YJ. Prevalence and Characterization of Plasmid-Mediated Quinolone Resistance Determinants qnr and aac( 6')- Ib- cr in Ciprofloxacin-Resistant Escherichia coli Isolates from Commercial Layer in Korea. J Microbiol Biotechnol 2020; 30:1180-1183. [PMID: 32423191 PMCID: PMC9728193 DOI: 10.4014/jmb.2003.03058] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 05/14/2020] [Indexed: 12/15/2022]
Abstract
The prevalence and characterization of plasmid-mediated quinolone resistance (PMQR) determinants in ciprofloxacin-resistant Escherichia coli isolated from a Korean commercial layer farm were studied. A total of 45 ciprofloxacin-resistant E. coli isolates were recovered and all isolates were multidrug-resistant. Eight isolates have the PMQR genes aac(6')-Ib-cr, qnrS1, and qnrB4, and seven isolates exhibited double amino acid exchange at both gyrA and parC, and have high fluoroquinolone minimum inhibitory concentrations. Five transconjugants demonstrated transferability of PMQR and β-lactamase genes and similar antimicrobial resistance. Because PMQR genes in isolates from commercial layer chickens could enter the food supply and directly affect humans, control of ciprofloxacin resistance is needed.
Collapse
Affiliation(s)
- Kwang Won Seo
- College of Veterinary Medicine and Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea,Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, MS 39762, USA
| | - Young Ju Lee
- College of Veterinary Medicine and Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea,Corresponding author Phone: +82-53-950-7793 Fax: +82-505-950-7793 E-mail:
| |
Collapse
|
12
|
Yoon S, Kim YB, Seo KW, Ha JS, Noh EB, Lee YJ. Characteristics of linezolid-resistant Enterococcus faecalis isolates from broiler breeder farms. Poult Sci 2020; 99:6055-6061. [PMID: 33142524 PMCID: PMC7647823 DOI: 10.1016/j.psj.2020.06.087] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 01/23/2020] [Revised: 05/27/2020] [Accepted: 06/17/2020] [Indexed: 01/04/2023] Open
Abstract
Linezolid is an oxazolidinone class antibiotic used for treatment infections caused by various multidrug-resistant gram-positive pathogens including enterococci. However, recently, linezolid-resistant isolates in animals are considered as a human health hazard. In a broiler operation system, antimicrobial resistance can be transferred to the environment and commercial broiler via the fecal-oral route. Therefore, this study was conducted to investigate the prevalence and characteristics of linezolid-resistant Enterococcus faecalis (E. faecalis) from broiler parent stock in a broiler operation system. Among 297 E. faecalis isolates from 85 flocks in 8 broiler breeder farms, the prevalence of chloramphenicol- and linezolid-resistant isolates was 0 to 12.1% and 0 to 8.0%, respectively; however, there were no significant differences between farms. Therefore, a total of 14 (4.7%) chloramphenicol- and/or linezolid-resistant E. faecalis showed resistance to 7 or more antimicrobial classes. The drug-resistance gene optrA, which can confer resistance to linezolid, tedizolid, and phenicols, was found in 8 (2.69%) isolates, and 7 (2.36%) of the 8 optrA-positive isolates co-carried the phenicol exporter gene fexA. However, E. faecalis isolates from 3 of 8 broiler breeder farms only carried the optrA and/or fexA genes. As linezolid is one of the last antimicrobial treatments of choice for multidrug-resistant gram-positive pathogens including E. faecalis, the presence of antibiotic-resistant E. faecalis in broiler breeder farms should be monitored to prevent the introduction of linezolid-resistant strains to the food chain.
Collapse
Affiliation(s)
- Sunghyun Yoon
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Yeong Bin Kim
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Kwang Won Seo
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS 39762, USA
| | - Jong Su Ha
- Quality Management Department, Samhwa GPS Breeding Agri. Inc., Hongseong 32291, Republic of Korea
| | - Eun Bi Noh
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea.
| |
Collapse
|
13
|
Yoon MY, Kim YB, Ha JS, Seo KW, Noh EB, Son SH, Lee YJ. Molecular characteristics of fluoroquinolone-resistant avian pathogenic Escherichia coli isolated from broiler chickens. Poult Sci 2020; 99:3628-3636. [PMID: 32616259 PMCID: PMC7597827 DOI: 10.1016/j.psj.2020.03.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 10/18/2019] [Revised: 02/13/2020] [Accepted: 03/21/2020] [Indexed: 11/30/2022] Open
Abstract
Avian pathogenic Escherichia coli (APEC) is a major pathogen in the poultry industry worldwide including Korea. In this study, the phenotypic and genotypic characteristics of 33 fluoroquinolone (FQ)-resistant APEC isolates from broilers were analyzed. All FQ-resistant APEC isolates showed amino acid exchanges at both gyrA and parC and high minimal inhibitory concentrations for FQs. A total of 11 (33.3%) isolates were positive for the plasmid-mediated quinolone resistance (PMQR) genes, qnrA (8 isolates) and qnrS (3 isolates), and showed multidrug resistance. Among the 11 PMQR-positive isolates, 1 and 2 isolates carried blaCTX-1 and blaCTX-15, respectively, as extended-spectrum β-lactamase (ESBL) producers, and the non-ESBL gene, blaTEM-1, was found in 4 isolates. Among 3 aminoglycoside-resistant isolates, aac(3)-II was only detected in 1 isolate. All 8 APEC isolates with resistance to tetracycline carried the tetA gene. Overall, 6 of the 7 trimethoprim-sulfamethoxazole-resistant isolates carried the sul1 or sul2 genes, while only 2 of the 8 chloramphenicol-resistant isolates carried the catA1 gene. Although 9 isolates carried class I integrons, only 4 isolates carried the gene cassettes dfrA12-aadA2 (2 isolates), dfrA17-aadA5 (1 isolate), extX-psp-aadA2 (1 isolate), and dfrA27 (1 isolate). The most common plasmid replicon was FIB (8 isolates, 72.7%), followed by K/B (4 isolates, 36.4%). Antimicrobial resistance monitoring and molecular analysis of APEC should be performed continuously to surveil the transmission between poultry farms.
Collapse
Affiliation(s)
- Mi Young Yoon
- Quality Management Department, Samhwa GPS Breeding Agri. Inc., Hongseong-gun, Chung Nam, 32291, Republic of Korea
| | - Yeong Bin Kim
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Buk-gu, Daegu, 41566, Republic of Korea
| | - Jong Su Ha
- Quality Management Department, Samhwa GPS Breeding Agri. Inc., Hongseong-gun, Chung Nam, 32291, Republic of Korea
| | - Kwang Won Seo
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, 39762, USA
| | - Eun Bi Noh
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Buk-gu, Daegu, 41566, Republic of Korea
| | - Se Hyun Son
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Buk-gu, Daegu, 41566, Republic of Korea
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Buk-gu, Daegu, 41566, Republic of Korea.
| |
Collapse
|
14
|
Kim JJ, Seo KW, Mo IP, Lee YJ. Genetic Characterization of Fluoroquinolone Resistance in Salmonella enterica Serovar Gallinarum Isolates from Chicken in Korea. Avian Dis 2020; 63:584-590. [PMID: 31865672 DOI: 10.1637/aviandiseases-d-19-00095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 06/24/2019] [Indexed: 11/05/2022]
Abstract
Salmonella enterica serovar Gallinarum is a nonmotile host-adapted Salmonella that causes fowl typhoid (FT), and an outbreak of FT is characterized by anorexia, greenish-yellow diarrhea, paleness, and sudden death with high mortality in poultry. To control and treat FT in commercial chickens, fluoroquinolones are widely used in Korea. This study aimed to investigate the genetic characteristics of fluoroquinolone-resistant Salmonella Gallinarum isolates from 2014-18 from chicken in Korea. A total of 35 ciprofloxacin (CIP)-resistant Salmonella Gallinarum was tested, and 22 (62.9%) isolates were observed to have multidrug resistance. All isolates had a mutation at the Ser83 or Asp87 codon in the gyrA gene, whereas three isolates had only double mutations at Ser83 → Phe and Asp87 → Asn or Ser83 → Phe and Asp87 → Gly. Minimum inhibitory concentrations of isolates with double mutations were relatively higher (≥8 mg/L for CIP and ≥16 mg/L for enrofloxacin) than those of other isolates with a single mutation in gyrA. Among 35 CIP-resistant Salmonella Gallinarum, plasmid-mediated quinolone resistance genes were detected in six (17.1%) isolates, and qnrB and qnrS were detected in four and two isolates, respectively. In the distribution of antimicrobial resistance genes in 35 CIP-resistant Salmonella Gallinarum, ant(2″)-I (54.3%) was the most prevalent gene, followed by TEM-1 (14.3%), sul1 (11.4%), and cmlA (5.7%). Fifteen (42.9%) of the 35 CIP-resistant Salmonella Gallinarum also carried class 1 integrons, which showed five types of resistance gene cassettes: aadA2 (7 isolates), aadA2 + dfrA12 (5 isolates), and aadA1 + aad A2 (3 isolates). Among plasmid replicons, 23 isolates (65.7%) carried five different plasmid replicons: Frep (9 isolates), FIB (7 isolates), FIIA (6 isolates), B/O (4 isolates), and I1 (3 isolates). These results suggest that continued monitoring of fluoroquinolone resistance is necessary to preserve the effectiveness of fluoroquinolones in poultry and to surveil the transmission to humans through the food chain.
Collapse
Affiliation(s)
- Jeom Joo Kim
- College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Republic of Korea.,The first two authors contributed equally to this work
| | - Kwang Won Seo
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea.,The first two authors contributed equally to this work
| | - In Pil Mo
- College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Republic of Korea
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea,
| |
Collapse
|
15
|
Song J, Kang S, Choi SW, Seo KW, Lee S, So MW, Lim DH. Coronavirus Disease 19 (COVID-19) complicated with pneumonia in a patient with rheumatoid arthritis receiving conventional disease-modifying antirheumatic drugs. Rheumatol Int 2020; 40:991-995. [PMID: 32314010 PMCID: PMC7167494 DOI: 10.1007/s00296-020-04584-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 03/26/2020] [Accepted: 04/07/2020] [Indexed: 12/20/2022]
Abstract
In December 2019, numerous coronavirus disease 2019 (COVID-19) cases were reported in Wuhan, China, which has since spread throughout the world. However, its impact on rheumatoid arthritis (RA) patients is unknown. Herein, we report a case of COVID-19 pneumonia in a 61-year-old female RA patient who was receiving conventional disease-modifying antirheumatic drugs (cDMARDs). The patient presented with a 4-day history of myalgia and febrile sensation. COVID-19 was confirmed by real-time polymerase chain reaction (PCR). Chest X-ray showed increased opacity on the right lower lung area, and C-reactive protein level was slightly elevated. The patient was treated with antiviral agents (lopinavir/ritonavir), and treatment with cDMARDs was discontinued except hydroxychloroquine. Her symptoms and laboratory results gradually improved. Three weeks later, real-time PCR for COVID-19 showed negative conversion, and the patient was discharged without any complications.
Collapse
Affiliation(s)
- Jehun Song
- Division of Rheumatology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, 877 Bangeojinsunhwan-doro, Dong-gu, Ulsan, 44033, South Korea
| | - Seongmin Kang
- Division of Rheumatology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, 877 Bangeojinsunhwan-doro, Dong-gu, Ulsan, 44033, South Korea
| | - Seung Won Choi
- Division of Rheumatology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, 877 Bangeojinsunhwan-doro, Dong-gu, Ulsan, 44033, South Korea
| | - Kwang Won Seo
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea
| | - Sunggun Lee
- Division of Rheumatology, Department of Internal Medicine, Haeundae Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - Min Wook So
- Division of Rheumatology, Department of Internal Medicine, Pusan National University Yangsan Hospital, Yangsan, South Korea
| | - Doo-Ho Lim
- Division of Rheumatology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, 877 Bangeojinsunhwan-doro, Dong-gu, Ulsan, 44033, South Korea.
| |
Collapse
|
16
|
Bae S, Lim S, Ahn JJ, Jegal Y, Seo KW, Ra SW, Kang BJ, Kim JH, Park SE, Han I, Kang H, An M, Ock M, Park EJ, Kwon WJ, Lee T. Diagnosing peripheral lung lesions using endobronchial ultrasonography with guide sheath: A prospective registry study to assess the effect of virtual bronchoscopic navigation using a computed tomography workstation. Medicine (Baltimore) 2020; 99:e19870. [PMID: 32332652 PMCID: PMC7440211 DOI: 10.1097/md.0000000000019870] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Bronchoscopy has a lower diagnostic yield for peripheral lung lesions (PLL). Endobronchial ultrasound guide sheath transbronchial lung biopsy (EBUS GS TBLB) has been used to overcome such limitation. Recent studies revealed that combined methods (e.g., EBUS GS TBLB plus electromagnetic navigation [EMN] or virtual bronchoscopic navigation [VBN]) further improve the diagnostic yield. However, those systems are associated with a high cost burden. Accordingly, we attempted to use VBN by computed tomography (CT) workstation (Aquarius iNtuition, TeraRecon) not dedicated only for VBN as an adjunctive tool for EBUS GS TBLB. We performed a prospective registry study to investigate whether VBN by CT workstation could improve the diagnostic yield of PLL.Between February 2017 and February 2018, 128 patients with PLL were divided into 2 groups (VBN and non-VBN [NVBN]). In NVBN group (n = 64), EBUS GS TBLB was performed using a hand-drawn bronchial map based on CT images. VBN group (n = 64) underwent EBUS GS TBLB using VBN images.VBN using CT workstation did not improve the diagnostic yield of EBUS GS TBLB for PLL (VBN vs NVBN, 72% vs 80%, P = .284). VBN slightly reduced procedure time (minute [mean ± SD], 25.31 ± 10.33 vs 25.81 ± 9.22), navigation time (time to find the lesion) (9.10 ± 7.88 vs 9.50 ± 7.14), and fluoroscopy time (2.23 ± 2.39 vs 2.86 ± 4.61), while these differences were not statistically significant.The diagnostic yield of EBUS GS TBLB was not improved with VBN (compared with using a hand-drawn bronchial map). Although VBN slightly shortened the procedure-related times, which were not significantly different.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Ilsang Han
- Department of Anesthesiology and Pain Medicine
| | - Hojun Kang
- Department of Anesthesiology and Pain Medicine
| | - Mingi An
- Department of Anesthesiology and Pain Medicine
| | | | - Eun Ji Park
- Medical Information Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | | | | |
Collapse
|
17
|
Seo KW, Shim JB, Kim YB, Son SH, Bi Noh E, Yoon S, Lim SK, Ju Lee Y. Impacts and characteristics of antimicrobial resistance of Escherichia coli isolates by administration of third-generation cephalosporins in layer hatcheries. Vet Microbiol 2020; 243:108643. [PMID: 32273023 DOI: 10.1016/j.vetmic.2020.108643] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 11/28/2019] [Revised: 03/05/2020] [Accepted: 03/17/2020] [Indexed: 10/24/2022]
Abstract
We investigated the characteristics and persistence of Escherichia coli resistant to third-generation cephalosporins (3GCs) by early administration of ceftiofur or gentamicin and to analyze the impact of 3GC use in hatcheries. We studied 10 ceftiofur-treated flocks (CTFs) and 10 gentamicin-treated flocks (GTFs) of layers. Fecal samples were collected at 1, 2, 4, 8, 18, and 30 weeks of age for all flocks. Among the 446 E. coli isolates, 58 (29.0 %) of 200 isolates in CTFs were identified as 3GC-resistant E. coli and 28 (11.4 %) of 246 isolates in GTFs were identified as 3GC-resistant E. coli. The presence of 3GC-resistant E. coli isolates at 1, 2, and 4 weeks was significantly higher in CTFs than in GTFs (p < 0.05). Moreover, the rate of resistance to 3GCs gradually decreased from 83.3 % at 1 week of age to 4.4 % at 30 weeks of age in CTFs. Of the 86 3GC-resistant E. coli isolates, 32 isolates had β-lactamase-encoding gene: blaCTX-M-14 (ten isolates), blaCTX-M-15 (three isolates), blaCMY-2 (five isolates), and blaTEM-1 (twenty-five isolates) genes. Plasmid replicon typing revealed that blaCTX-M-14, blaCTX-M-15, blaCMY-2, and blaTEM-1 were located on F, F and FIB, I1 and K, and I1 and FII, respectively. Furthermore, 18 isolates carried class 1 integrons, with four different gene cassettes. These results revealed that ceftiofur used in hatcheries can lead to an increase in the number of 3GC-resistant E. coli with many characteristics. A voluntary ban must be imposed on the use of 3GCs for 1-day-old chicks in poultry industry.
Collapse
Affiliation(s)
- Kwang Won Seo
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State 39762, USA; College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Jong Bo Shim
- Korean Poultry TS Co., Ltd., Icheon 17415, Republic of Korea
| | - Yeong Bin Kim
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Se Hyun Son
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Eun Bi Noh
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Sunghyun Yoon
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Suk-Kyung Lim
- Animal and Plant Quarantine Agency, Ministry of Agriculture, Food and Rural Affairs, Gimcheon 39660, Republic of Korea
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea.
| |
Collapse
|
18
|
Noh EB, Kim YB, Seo KW, Son SH, Ha JS, Lee YJ. Antimicrobial resistance monitoring of commensal Enterococcus faecalis in broiler breeders. Poult Sci 2020; 99:2675-2683. [PMID: 32359604 PMCID: PMC7597544 DOI: 10.1016/j.psj.2020.01.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 01/09/2020] [Accepted: 01/09/2020] [Indexed: 12/19/2022] Open
Abstract
Enterococcus faecalis (E. faecalis) has rapidly acquired resistance to multiple antimicrobials, and the antimicrobial resistance of E. faecalis from broiler breeders has been implicated in its vertical transmission to their offspring. The objective of this study was to investigate the antimicrobial resistance and genetic diversity of commensal E. faecalis isolated from the broiler breeder farms. Among a total of 229 E. faecalis isolates from 9 broiler breeder farms, the highest resistance rate was observed in tetracycline (78.2%), followed by doxycycline (58.1%) and erythromycin (43.7%), and the prevalence of antimicrobial resistance showed significant differences among the 9 broiler breeder farms (P < 0.05). The tetM gene (77.1%) and ermB gene (85.0%) were detected at the highest levels in 179 TE-and 100 E-resistant isolates, respectively. Twenty-four high-level gentamicin-resistant isolates carried aac(6″)Ie-aph(2″)-la gene, and 9 high-level ciprofloxacin-resistant isolates showed point mutations in both gyrA and parC genes. All high-level gentamicin-resistant or high-level ciprofloxacin-resistant isolates showed one of the two different virulence gene patterns, ace-asa1-efaA-gelE complex or ace-efaA-gelE complex. These results indicate that constant epidemiological monitoring at the breeder level is required to prevent the pyramidal transmission of antimicrobial-resistant E. faecalis.
Collapse
Affiliation(s)
- Eun Bi Noh
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Yeong Bin Kim
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Kwang Won Seo
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea; Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State 39762, USA
| | - Se Hyun Son
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Jong Su Ha
- Samhwa GPS Breeding Agri. Inc., Hongseong 32291, Republic of Korea
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea.
| |
Collapse
|
19
|
Jo W, Pak C, Jegal Y, Seo KW. Boarding issue in a commercial flight for patients with cavitary pulmonary tuberculosis: A case report. World J Clin Cases 2020; 8:546-551. [PMID: 32110665 PMCID: PMC7031828 DOI: 10.12998/wjcc.v8.i3.546] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/09/2020] [Accepted: 01/14/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Several studies have demonstrated that airborne transmission of Mycobacterium tuberculosis bacteria from patients with active pulmonary tuberculosis (TB) to other passengers or crew members can occur during long flights. As such, non-infectious TB patients are usually allowed to undertake air travel after taking the appropriate anti-TB drugs. However, the global guidelines for air travel for patients with TB are inconsistent and insufficiently detailed with respect to cavitary pulmonary TB (CPTB).
CASE SUMMARY Here, we report a case in which a patient with multiple CPTB was permitted air travel, following negative sputum acid-fast bacilli smear tests after administration of proper anti-TB medication. The patient’s culture results were pending.
CONCLUSION This case revealed that more specific guidelines regulating air travel for patients with CPTB are necessary.
Collapse
Affiliation(s)
- Woori Jo
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan, College of Medicine, Ulsan 44033, South Korea
| | - Chuiyong Pak
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan, College of Medicine, Ulsan 44033, South Korea
| | - Yangjin Jegal
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan, College of Medicine, Ulsan 44033, South Korea
| | - Kwang Won Seo
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan, College of Medicine, Ulsan 44033, South Korea
| |
Collapse
|
20
|
Seo KW, Kim JJ, Mo IP, Lee YJ. Molecular characteristic of antimicrobial resistance of Salmonella Gallinarum isolates from chickens in Korea, 2014 to 2018. Poult Sci 2020; 98:5416-5423. [PMID: 31350992 DOI: 10.3382/ps/pez376] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 07/16/2019] [Indexed: 11/20/2022] Open
Abstract
Fowl typhoid (FT), which is caused by Salmonella enterica serovar Gallinarum (S. Gallinarum), leads to high morbidity and acute or subacute mortality in chickens of all ages. Although a live S. Gallinarum 9R vaccine was introduced in 2001 for commercial layer chickens in Korea, until recently, a variety of antimicrobials were widely used to prevent or treat FT. In this study, we investigated antimicrobial resistance in S. Gallinarum strains isolated from 2014 to 2018 and characterized the multidrug-resistant (MDR) strains to better understand the resistance trends in recent isolates. A total of 130 S. Gallinarum isolates were collected from chickens with FT, and the isolates showed highest rates of resistance to nalidixic acid (78.5%), followed by gentamicin (52.3%), ciprofloxacin (26.9%), and ampicillin (14.6%). Particularly, significant increases (P < 0.05) in the frequencies of resistance to the following antimicrobials were observed: ampicillin (from 7.7 to 28.6%), amoxicillin-clavulanate (from 0.0 to 10.7%), nalidixic acid (from 69.2 to 100.0%), ciprofloxacin (from 15.4 to 50.0%), chloramphenicol (from 0.0 to 17.9%), and colistin (from 0.0 to 14.3%). The prevalence of MDR isolates also rapidly increased from 23.1% in the 2014 to 60.7% in the 2018 (P < 0.05). The distribution of antimicrobial resistance genes in the 39 MDR S. Gallinarum isolates was as follows: ant(2")-I gene (22 isolates), blaTEM-1 gene (13 isolates), sul1 (9 isolates), sul2 (3 isolates), cmlA (3 isolates), and qnrB (3 isolates). Of 39, 25 (64.1%) MDR S. Gallinarum isolates also carried class 1 integrons, and these showed 5 types of resistance gene cassettes: dfrA12+aadA2 (36.0%), aadA2 (36.0%), aadA1-aadA2 (20.0%), dfrA12+catB3+aadA2 (4.0%), and dfrA12 (4.0%). Among the plasmid replicons, B/O (33.3%) was more prevalent than the other replicon types, followed by Frep (25.0%), FIIA (19.4%), FIB (13.9%), and I1 (8.3%). Antimicrobial resistance may become a serious problem because many drugs are likely ineffective for the treatment of FT. Therefore, these data support the critical need for comprehensive surveillance of antimicrobial resistance in poultry.
Collapse
Affiliation(s)
- Kwang Won Seo
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Jeom Joo Kim
- College of Veterinary Medicine, Chungbuk National University, Cheongju 361-763, Republic of Korea
| | - In Pil Mo
- College of Veterinary Medicine, Chungbuk National University, Cheongju 361-763, Republic of Korea
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| |
Collapse
|
21
|
Kim YB, Seo KW, Shim JB, Son SH, Noh EB, Lee YJ. Molecular characterization of antimicrobial-resistant Enterococcus faecalis and Enterococcus faecium isolated from layer parent stock. Poult Sci 2020; 98:5892-5899. [PMID: 31180127 DOI: 10.3382/ps/pez288] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 02/13/2019] [Accepted: 05/01/2019] [Indexed: 11/20/2022] Open
Abstract
Enterococcus faecalis (E. faecalis) and Enterococcus faecium (E. faecium) are ubiquitous intestinal bacteria in humans and animals that can easily acquire antimicrobial resistance, which allows them to have roles as antimicrobial resistance indicators. In addition, layer parent stock produces thousands of eggs for the production of commercial laying hens and can transfer a variety of viral and bacterial agents to chicks. The objective of this study was to determine the prevalence and characteristics of antimicrobial-resistant E. faecalis and E. faecium isolated in the layer parent stock level of the egg-layer operating system in South Korea. A total of 129 E. faecalis and 166 E. faecium isolates from 74 flocks of 30 layer parent stock were tested for resistance in this study. The prevalence of doxycycline- (51.9%), erythromycin- (53.5%), high-level gentamicin- (13.2%), high-level kanamycin- (31.0%), high-level streptomycin- (30.2%), and tetracycline- (64.3%) resistant E. faecalis isolates were higher than those for E. faecium isolates (P < 0.05). The ermB gene was detected in 66 (95.7%) erythromycin-resistant E. faecalis isolates, which was higher than that of 32 (71.7%) erythromycin-resistant E. faecium isolates. Twenty-one high-level gentamicin-resistant Enterococcus spp. (17 E. faecalis and 4 E. faecium) carried at least one aminoglycoside-modifying enzyme gene, aac(6')Ie-aph(2')-Ia or ant(6)-Ia. Fourteen isolates that harbored both aac(6')Ie-aph(2')-Ia and ant(6)-Ia exhibited pattern A with IS256 at both ends. Ten high-level ciprofloxacin-resistant Enterococcus spp. (8 E. faecalis and 2 E. faecium) showed amino acid changes from serine to isoleucine at codons 83 in gyrA, and 80 in parC. Also, the virulence genes ace, asa1, efaA, and gelE were detected in this study. To the best of our knowledge, this is the first study to examine the prevalence and characteristics of antimicrobial-resistant E. faecalis and E. faecium isolates in the layer parent stock. Our findings support the need for a surveillance program to monitor the emergence of antimicrobial-resistant E. faecalis and E. faecium in layer operating system.
Collapse
Affiliation(s)
- Yeong Bin Kim
- College of Veterinary Medicine and Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Kwang Won Seo
- College of Veterinary Medicine and Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Jong Bo Shim
- Korean Poultry TS Co., Ltd., Incheon 17415, Republic of Korea
| | - Se Hyun Son
- College of Veterinary Medicine and Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Eun Bi Noh
- College of Veterinary Medicine and Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Young Ju Lee
- College of Veterinary Medicine and Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| |
Collapse
|
22
|
Kim YB, Seo KW, Son SH, Noh EB, Lee YJ. Genetic characterization of high-level aminoglycoside-resistant Enterococcus faecalis and Enterococcus faecium isolated from retail chicken meat. Poult Sci 2020; 98:5981-5988. [PMID: 31298294 DOI: 10.3382/ps/pez403] [Citation(s) in RCA: 9] [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] [Received: 02/13/2019] [Accepted: 06/18/2019] [Indexed: 01/08/2023] Open
Abstract
Retail chicken meat can play a role in the transfer of drug resistance to humans through the handling or ingestion of improperly cooked meat contaminated with resistant enterococci. In fact, high-level aminoglycoside-resistance (HLAR) in enterococci identified in human cases. Therefore, the prevalence and genetic characterization of HLAR in enterococci in retail chicken meat were investigated in this study. Of the 345 enterococci strains, 29 (8.7%) showed HLAR. All HLAR in enterococci carried at least 1 of 2 aminoglycoside-modifying enzyme genes, aac(6')Ie-aph(2″)-Ia and ant(6)-Ia. Among the 13 isolates that carried aac(6')Ie-aph(2″)-Ia, 3 had pattern A, with IS256 at both ends, and the other 10 had pattern D, without IS256 at both ends. All HLAR in enterococci also showed multidrug resistance. Among the 24 erythromycin-resistant enterococci, 19 (79.2%) harbored the ermB gene, and one (4.2%) harbored both the ermB and ermA genes. A total of 21 enterococci were tetracycline-resistant and harbored one or more of the following tetracycline resistance genes tet(M), tet(L), and tet(O). The Int-Tn gene was detected in one isolate (3.4%) carrying the tet(M) and ermB genes. All 4 chloramphenicol-resistant isolates carried either the phenicol resistance gene cfr alone (one isolate), both cfr and fexA (one isolate), or both fexA and optrA (2 isolates). Four efflux pump genes, efr(A), efr(B), emeA, and lsa, were detected in all HLAR in Enterococcus faecalis isolates. These results improve our understanding of the transmission dynamics of HLAR in enterococci from non-hospital sources to humans.
Collapse
Affiliation(s)
- Yeong Bin Kim
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Kwang Won Seo
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea.,Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State 39762, USA
| | - Se Hyun Son
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Eun Bi Noh
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| |
Collapse
|
23
|
Won Seo K, Ju Lee Y. Corrigendum to “Prevalence and characterization of plasmid mediated quinolone resistance genes and class 1 integrons among multidrug-resistant Escherichia coli isolates from chicken meat”. J APPL POULTRY RES 2019. [DOI: 10.3382/japr/pfz067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
24
|
Lim H, Yang HM, Yoon MH, Seo KW, Choi BJ, Choi SY, Seo JY, Jin U, Tahk SJ. 6112Usefulness of the trans-stent fractional flow reserve gradient for predicting clinical outcomes. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Aims
The clinical meaning of a trans-stent pressure gradient after DES implantation has not been estimated adequately. We evaluated the usefulness of a fractional flow reserve (FFR) gradient across the stent (ΔFFRstent) for long-term clinical outcomes after percutaneous coronary intervention (PCI) with a drug-eluting stent (DES).
Methods and results
FFR pull-back and intravascular ultrasound (IVUS) were performed after successful PCI in 135 left anterior descending artery lesions. ΔFFRstent was defined as the FFR gradient across the stent. The ΔFFRstent/length was defined as the ΔFFRstent value divided by the total stent length multiplied by 10 [= (ΔFFRstent ÷ stent length) x 10]. Major adverse cardiac events (MACEs) were the composite of all-cause death, target vessel related myocardial infarction, and target lesion revascularisation. Despite successful PCI without significant complications on IVUS, ΔFFRstent >0 was observed in 98.5% of cases. ΔFFRstent ≥0.04 and ΔFFRstent/length ≥0.009 predicted suboptimal stenting defined as final minimal stent area <5.5 mm2. During 2183±898 days, the MACE-free survival rate was significantly lower in patients with ΔFFRstent ≥0.04 and ΔFFRstent/length ≥0.009 compared to those with lower values (69.6 vs. 93.4%, log-rank p=0.031; 72.1 vs. 97.7%, log-rank p=0.003, respectively). ΔFFRstent/length ≥0.009 (hazard ratio 10.1, p=0.032) was an independent predictor of MACE.
Trans-stent FFR and MACE
Conclusion
A trans-stent FFR gradient was frequently observed in DES-treated patients despite successful PCI results. ΔFFRstent and ΔFFRstent/length are useful indicators for optimising a DES and are related to long-term outcomes.
Collapse
Affiliation(s)
- H Lim
- Ajou University Medical Center, Suwon, Korea (Republic of)
| | - H M Yang
- Ajou University Medical Center, Suwon, Korea (Republic of)
| | - M H Yoon
- Ajou University Medical Center, Suwon, Korea (Republic of)
| | - K W Seo
- Ajou University Medical Center, Suwon, Korea (Republic of)
| | - B J Choi
- Ajou University Medical Center, Suwon, Korea (Republic of)
| | - S Y Choi
- Ajou University Medical Center, Suwon, Korea (Republic of)
| | - J Y Seo
- Ajou University Medical Center, Suwon, Korea (Republic of)
| | - U Jin
- Ajou University Medical Center, Suwon, Korea (Republic of)
| | - S J Tahk
- Ajou University Medical Center, Suwon, Korea (Republic of)
| |
Collapse
|
25
|
Seo KW, Lee YJ. Prevalence and Characterization of Plasmid Mediated Quinolone Resistance Genes and Class 1 Integrons Among Multidrug-Resistant Escherichia coli Isolates from Chicken Meat. J APPL POULTRY RES 2019. [DOI: 10.3382/japr/pfz016] [Citation(s) in RCA: 4] [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: 01/17/2023] Open
|
26
|
Noh EB, Kim YB, Jeon HY, Seo KW, Son SH, Lee YJ. Antimicrobial Resistance and Genetic Diversity of Salmonella Serotypes Recovered from Edible Pork Offal from Korea. Microb Drug Resist 2019; 25:1514-1520. [PMID: 31369345 DOI: 10.1089/mdr.2019.0010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Although edible offal can be easily contaminated with foodborne bacteria and regarded as important transfers of antimicrobial resistance to humans, the characterization of bacteria from edible offal have not been researched sufficiently. This study is the first to focus on the molecular characterization of Salmonella isolated from edible pork offal. From a total of 52 Salmonella isolates from edible pork offal, 44 (80.7%) were resistant to at least one antimicrobial agent and 24 (46.2%) exhibited multidrug resistance (MDR). All MDR Salmonella were also resistant to β-lactams and 12 (50.0%) of the isolates were positive for blaTEM-1. Eleven (68.8%) of the 16 gentamicin-resistant isolates harbored the ant(2'')-I gene. Among 18 tetracycline-resistant isolates, tetA and tetB genes were found in 9 (50.0%) and 3 (16.7%) isolates, respectively. The sul1 gene was identified in 9 (81.8%) of 11 trimethoprim/sulfamethoxazole-resistant isolates, and the cmlA gene was identified in only 2 (18.1%) among 11 chloramphenicol-resistant isolates. Eighteen (75.0%) of the 24 MDR Salmonella were identified as containing class 1 integrons, within which dfrA12-aadA2 (55.6%) was the most prevalent resistance gene cassettes. Twenty-one (87.5%) of the MDR isolates were also found to have the plasmid replicons. Replicon B/O (41.7%) was the most prevalent replicon types. These results suggest that edible pork offal can become a reservoir that not only harbors MDR Salmonella, but also contributes to their dissemination through cross-contamination processes.
Collapse
Affiliation(s)
- Eun Bi Noh
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Yeong Bin Kim
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Hye Young Jeon
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Kwang Won Seo
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Se Hyun Son
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Young Ju Lee
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| |
Collapse
|
27
|
Nam A, Kim SM, Jeong JW, Song KH, Koo TS, Seo KW. Comparison of body surface area-based and weight-based dosing format for oral prednisolone administration in small and large-breed dogs. Pol J Vet Sci 2019; 20:611-613. [PMID: 29166276 DOI: 10.1515/pjvs-2017-0076] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This study compared the pharmacokinetics of Prednisolone (PDS) in small- and large breed dogs with a dosing format based on body surface area (BSA) or body weight (BW). The maximum concentration and area under the curve in large-breed dogs orally administered 2 mg/kg PDS were significantly greater than those in small-breed dogs given 2 mg/kg and in large-breed dogs given 40 mg/m2. The higher blood concentrations that result from BW-based dosing of oral PDS in large-breed dogs can be more than required for effect. Meanwhile, BSA dosing at 40 mg/m may be suboptimal. These findings confirm important differences between standard PDS dosing schemes in dogs while highlighting the need to further optimize PDS dosing in large-breed dogs.
Collapse
|
28
|
Seo KW, Lee YJ. Characterization of plasmid mediated quinolone resistance determinants in ciprofloxacin resistant-Escherichia coli from chicken meat produced by integrated broiler operations in Korea. Int J Food Microbiol 2019; 307:108274. [PMID: 31404780 DOI: 10.1016/j.ijfoodmicro.2019.108274] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 07/18/2019] [Accepted: 07/26/2019] [Indexed: 11/25/2022]
Abstract
The purpose of this study was to determine the genetic characterization of ciprofloxacin resistant- Escherichia coli recovered from 7 different integrated broiler operations in Korea. Among the 157 E. coli isolated from chicken meat produced by integrated broiler operations, 75 (47.8%) were observed to be ciprofloxacin resistant-E. coli. However, the prevalence varied from 25.0 to 75.0%, in chicken meat, indicating variation in ciprofloxacin resistant E. coli occurrence among the operations. Among the 75 ciprofloxacin resistant-E. coli isolates, 10 showed plasmid-mediated quinolone resistance (PMQR) genes, aac(6')-Ib-cr, qnrS1 and qnrB4. Among the 10 PMQR-positive E. coli, a double amino-acid exchange in both gyrA and parC with ciprofloxacin minimum inhibitory concentrations of ≥16 μg/mL was noted in 8 isolates, and 4 transconjugants (40.0%) expressed similar antimicrobial resistance patterns and revealed the presence of PMQR genes and β-lactamase genes. Our findings suggest that E. coli with resistance to ciprofloxacin can now be found in association with integrated broiler operations, thus highlighting the need for monitoring and prevention programs in integrated operations.
Collapse
Affiliation(s)
- Kwang Won Seo
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State 39762, USA
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea.
| |
Collapse
|
29
|
Son SH, Seo KW, Kim YB, Jeon HY, Noh EB, Lee YJ. Molecular Characterization of Multidrug-Resistant Escherichia coli Isolates from Edible Offal in Korea. J Food Prot 2019; 82:1183-1190. [PMID: 31233359 DOI: 10.4315/0362-028x.jfp-18-458] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
HIGHLIGHTS Edible offal is significantly contaminated by antimicrobial-resistant Escherichia coli. E. coli from edible offal is harboring various antimicrobial resistance and virulence genes. Improvements in hygienic conditions of edible offal production is required.
Collapse
Affiliation(s)
- Se Hyun Son
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: https://orcid.org/0000-0002-4754-0931 [Y.B.K.]; https://orcid.org/0000-0003-1903-1133 [H.Y.J.])
| | - Kwang Won Seo
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: https://orcid.org/0000-0002-4754-0931 [Y.B.K.]; https://orcid.org/0000-0003-1903-1133 [H.Y.J.])
| | - Yeong Bin Kim
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: https://orcid.org/0000-0002-4754-0931 [Y.B.K.]; https://orcid.org/0000-0003-1903-1133 [H.Y.J.])
| | - Hye Young Jeon
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: https://orcid.org/0000-0002-4754-0931 [Y.B.K.]; https://orcid.org/0000-0003-1903-1133 [H.Y.J.])
| | - Eun Bi Noh
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: https://orcid.org/0000-0002-4754-0931 [Y.B.K.]; https://orcid.org/0000-0003-1903-1133 [H.Y.J.])
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: https://orcid.org/0000-0002-4754-0931 [Y.B.K.]; https://orcid.org/0000-0003-1903-1133 [H.Y.J.])
| |
Collapse
|
30
|
Seo KW, Im MC, Kim YB, Sung HW, Lee YJ. Characteristics of Salmonella Bareilly isolated from commercial layer farms and raw shell eggs in Korea. Can J Anim Sci 2019. [DOI: 10.1139/cjas-2017-0034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Salmonella enterica serovar Bareilly (S. Bareilly) has been among the top 20 most frequently isolated serovars in the United States and has been observed recently in layer flocks in Korea. Between 2013 and 2014, 45 S. Bareilly isolates were obtained from five commercial layer farms and nine retail markets in Korea. Among the 45 isolates, four pulsed-field gel electrophoresis patterns were observed, with pattern B being the predominant and comprising 67% of the 45 isolates. The most common antimicrobial resistance was streptomycin (24.4%) and cephalothin (6.7%). This is the first report describing epidemiological characteristics of S. Bareilly, including geographical variation, in Korea.
Collapse
Affiliation(s)
- Kwang Won Seo
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Min Chan Im
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Yeong Bin Kim
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Haan Woo Sung
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| |
Collapse
|
31
|
Jeon HY, Seo KW, Kim YB, Kim DK, Kim SW, Lee YJ. Characteristics of third-generation cephalosporin-resistant Salmonella from retail chicken meat produced by integrated broiler operations. Poult Sci 2019; 98:1766-1774. [PMID: 30535173 DOI: 10.3382/ps/pey514] [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: 07/24/2018] [Accepted: 10/15/2018] [Indexed: 02/05/2023] Open
Abstract
Integrated broiler operations, which control and operate vertically through all phases of the chicken industry, have applied biosecurity and sanitation practices, housing technologies, feeding regimens, and antibiotic applications in different ways to improve food safety. The objective of this study was to compare the prevalence and antimicrobial resistance profiles of Salmonella isolates recovered from 6 different integrated broiler operations and to analyze the characteristics of extended-spectrum β-lactamase (ESBL)- and plasmid-mediated AmpC β-lactamase (pAmpC)-producing Salmonella isolates. Among 336 chicken meat samples, 57 were observed to be positive for Salmonella. However, the prevalence varied from 6.8% to 45.8% in chicken meat, indicating variations in Salmonella occurrence among the operations. Salmonella Albany was the dominant serovar, followed by Salmonella Virchow. In the antimicrobial resistance test, nalidixic acid-resistant isolates were the most prevalent (73.7%), followed by isolates resistant to ampicillin (49.1%) and tetracycline (42.1%). Among 14 third-generation cephalosporin-resistant isolates, 9 (64.3%) ESBL/pAmpC-producing isolates were only obtained from 2 operations: blaCTX-M-15 (n = 7) and blaCTX-M-79 (n = 1) for ESBL genes and blaCMY-2 (n = 1) for pAmpC. All ESBL/pAmpC-positive isolates exhibited high minimum inhibitory concentrations (≥128 μg/mL) of most cephalosporins and showed multidrug resistance. The transfer of ESBL/pAmpC genes was confirmed in transconjugants, which had the same genes and similar resistance patterns as those of the donor. Our findings suggest that Salmonella with resistance to third-generation cephalosporins can now be found in association with integrated broiler operations, providing data to support the development of monitoring and prevention programs for the development and spread of antimicrobial resistance in integrated broiler operations.
Collapse
Affiliation(s)
- Hye Young Jeon
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Kwang Won Seo
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Yeong Bin Kim
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Dong Kyu Kim
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Shin Woo Kim
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Young Ju Lee
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| |
Collapse
|
32
|
Shim JB, Seo KW, Kim YB, Jeon HY, Lim SK, Lee YJ. Molecular characteristics of extended-spectrum and plasmid-mediated AmpC β-lactamase-producing Escherichia coli isolated from commercial layer in Korea. Poult Sci 2019; 98:949-956. [PMID: 30239888 DOI: 10.3382/ps/pey417] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Accepted: 08/31/2018] [Indexed: 11/20/2022] Open
Abstract
In the poultry industry, commercial layer farms play an important role in meeting the protein demand through the supply of eggs. However, the risk of contamination by β-lactamase-producing Escherichia coli in eggs laid by commercial chickens is significant. In this study, we investigated the rate of extended-spectrum β-lactamase (ESBL) and plasmid-mediated AmpC (pAmpC) β-lactamase-producing E. coli isolated from layer hens and characterized their molecular background. Among the 92 cefotaxime-resistant E. coli isolates, 66 (71.7%) were identified as multidrug resistant and 29 showed phenotypic and genotypic characteristics of β-lactamase-producing E. coli. The ESBL/pAmpC genes blaCTX-M-1, blaCTX-M-14, blaCTX-M-15, and blaCMY-2 were detected in 1, 6, 5, and 4 isolates, respectively. The non-ESBL/pAmpC gene blaTEM-1 was found in 16 isolates. Three isolates harbored both blaTEM-1 and blaCTX-M-14 genes. A total of 12 isolates also carried class 1 integrons, with 3 different gene cassette arrangements found in 8 of these isolates. A pulsed-field gel electrophoresis (PFGE) analysis of the 29 β-lactamase-producing E. coli isolates revealed that 4 PFGE patterns were consistent with the β-lactamase gene and layer farm origin, and showed a similar antibiotic resistance pattern. Our results suggest that comprehensive surveillance and more prudent use of third-generation cephalosporins in commercial layer farms is necessary to prevent the dissemination of ESBL/pAmpC-producing E. coli.
Collapse
Affiliation(s)
- Jong Bo Shim
- R&D center, Korean Poultry TS Co., Ltd., Icheon 17415, Republic of Korea
| | - Kwang Won Seo
- College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Yeong Bin Kim
- College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Hye Young Jeon
- College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Suk-Kyung Lim
- Animal and Plant Quarantine Agency, Ministry of Agriculture, Food and Rural Affairs, Gimcheon 39660, Republic of Korea
| | - Young Ju Lee
- College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| |
Collapse
|
33
|
Seo KW, Lee YJ. Detection of plasmid-mediated quinolone resistance genes in β-lactamase-producing Escherichia coliisolates from layer hens. Poult Sci 2019; 98:1480-1487. [DOI: 10.3382/ps/pey545] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 11/23/2018] [Indexed: 11/20/2022] Open
|
34
|
Seo KW, Shim JB, Lee YJ. Comparative genetic characterization of third-generation cephalosporin-resistant Escherichia coliisolated from a layer operation system in Korea. Poult Sci 2019; 98:1472-1479. [DOI: 10.3382/ps/pey513] [Citation(s) in RCA: 4] [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] [Received: 07/29/2018] [Accepted: 10/13/2018] [Indexed: 11/20/2022] Open
|
35
|
Kim YB, Seo KW, Jeon HY, Lim SK, Sung HW, Lee YJ. Molecular characterization of erythromycin and tetracycline-resistant Enterococcus faecalis isolated from retail chicken meats. Poult Sci 2019; 98:977-983. [DOI: 10.3382/ps/pey477] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 09/11/2018] [Indexed: 12/12/2022] Open
|
36
|
Kim JH, Seo KW, Shin Y, Oh JS, Jun JB, Jeong J, Sim CS, Baek S, Lee T, Ahn JJ. Risk factors for developing Mycobacterium kansasii lung disease: A case-control study in Korea. Medicine (Baltimore) 2019; 98:e14281. [PMID: 30702593 PMCID: PMC6380715 DOI: 10.1097/md.0000000000014281] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Previous studies have suggested that development of Mycobacterium kansasii lung disease (MKLD) was associated with COPD, pneumoconiosis, aging, male, immunosuppression, alcohol, malignancy, and certain occupations such as mining and sandblasting. However, previous studies were outdated and used non-comparative statistical methods. We aimed to determine the current risk factors for developing MKLD in Korea by using appropriate statistical techniques.Eighty-six MKLD patients were identified through a search of the Ulsan University Hospital database between January 2010 and December 2014. These cases were matched with 172 controls who had normal respiratory systems in a health examination during the same period (matching variables, age and sex; case: control ratio of 1:2). Clinical and demographic characteristics were gathered by reviewing the medical record and telephone survey. Multivariate logistic regression analyses were performed to evaluate risk factors for developing MKLD.Multivariate analysis showed that occupation in heavy industries (adjusted odds ratio (aOR) 6.41, 95% confidence interval (CI) 2.19-18.74, P = .001) and low body mass index (BMI) (aOR [per kg/m] 0.73, 95% CI 0.63-0.85, P < .001) were independent risk factors for development of MKLD. Educational attainment more than high school was associated with a lower risk of MKLD development (aOR 0.22, 95% CI 0.08-0.63, P = .005).Employees in heavy industry and low BMI are independent risk factors for development of MKLD in Korea.
Collapse
Affiliation(s)
| | | | - Yongjoon Shin
- Department of Anesthesiology and Pain Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan
| | - Ji Seon Oh
- Clinical Research Center, Asan Medical Center, University of Ulsan College of Medicine
| | | | | | - Chang Sun Sim
- Department of Occupational and Environmental Medicine
| | - Seunghee Baek
- Clinical Epidemiology and Biostatistics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | | | | |
Collapse
|
37
|
Jeon HY, Kim YB, Lim SK, Lee YJ, Seo KW. Characteristics of cephalosporin-resistant Salmonella isolates from poultry in Korea, 2010–2017. Poult Sci 2019; 98:957-965. [DOI: 10.3382/ps/pey418] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 08/16/2018] [Indexed: 12/26/2022] Open
|
38
|
Abstract
The use of antimicrobials in food animals is the major determinant for the propagation of resistant bacteria in the animal reservoir. Especially, parent stock (PS) produces thousands of eggs for commercial laying hens and can transfer a variety of viral and bacterial agents to chicks. The objective of this study was to investigate the presence and distribution of third-generation cephalosporin-resistant and extended-spectrum β-lactamase (ESBL)- and plasmid-mediated AmpC (pAmpC)-producing Escherichia coli in the PS level of the layer operation system in Korea. A total of 591 E. coli isolates were tested in this study and resistance to the first-generation cephalosporins ranged from 60.0% to 71.1%, whereas the resistance to the second- and third-generation cephalosporins ranged from 18.3% to 28.9% and from 8.3% to 14.5%, respectively. Of the 65 third-generation cephalosporin-resistant E. coli isolates, 51 (78.5%) showed multidrug resistance and 18 (27.7%) exhibited phenotypic and genotypic characteristics of ESBL/pAmpC-producing E. coli. With regard to ESBL/pAmpC gene prevalence, only the CMY-2 gene was identified in all 18 ESBL/pAmpC-producing E. coli and two isolates possessed both the CMY-2 and TEM-1 genes. Pulsed-field gel electrophoresis (PFGE) analysis of the 18 CMY-2-producing E. coli isolates revealed four PFGE patterns from the same PS farm and flock and accorded both CMY-2 genes and antimicrobial resistance pattern. To the best of our knowledge, this is the first study to investigate the prevalence and characteristics of third-generation cephalosporin-resistant and CMY-2-producing E. coli isolated at the layer PS level; our findings support the critical need for a comprehensive surveillance program to monitor the emergence and dissemination of third-generation cephalosporin resistance.
Collapse
Affiliation(s)
- Kwang Won Seo
- 1 College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Jong Bo Shim
- 2 Korean Poultry TS Co., Ltd., Icheon, Republic of Korea
| | - Young Ju Lee
- 1 College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| |
Collapse
|
39
|
Seo KW, Kim YB, Jeon HY, Lim SK, Lee YJ. Comparative genetic characterization of third-generation cephalosporin-resistant Escherichia coli from chicken meat produced by integrated broiler operations in South Korea. Poult Sci 2018; 97:2871-2879. [PMID: 29897533 DOI: 10.3382/ps/pey127] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 03/16/2018] [Indexed: 12/25/2022] Open
Abstract
Vertical integration of the broiler industry allows producers to combine different biosecurity and sanitation practices, housing technologies, and feeding regimens to improve food safety. The objectives of this study were to determine the antimicrobial resistance pattern of β-lactamase-producing E. coli and to compare the characteristics of E. coli recovered from 7 different integrated broiler operations in South Korea. Among 200 chicken meat samples, 101 were observed to be positive for E. coli. However, the prevalence varied from 37.5% to 75.0% in chicken meats from different operations, indicating variation in E. coli occurrence among the operations. Among 101 isolated E. coli from chicken meat, 59 were identified third-generation cephalosporin-resistant E. coli and recovered from 7 different operations. A high proportion of the E. coli isolates were resistant to penicillins (89.8%), quinolones (81.4%). Among 59 third-generation cephalosporin-resistant E. coli isolates, 29 showed phenotypic and genotypic characteristics of β-lactamase-producing E. coli. Prevalence of bla gene, blaCTX-M-1, blaCTX-M-14, blaCMY-2, and blaTEM-1, were identified in 2, 4, 8, and 16 E. coli isolates respectively and only one E. coli had both genes, blaTEM-1 and blaCTX-M-1. Pulsed-field gel electrophoresis (PFGE) analysis was performed on 29 β-lactamase-producing E. coli isolates. In PFGE, E. coli included 7 PFGE patterns showing the same operation and an accorded both resistance to β-lactam antibiotics and presence of the bla-gene. Our findings suggest that E. coli with resistance to third-generation cephalosporins can now be found in association with integrated broiler operations, providing the data to support the development of monitoring and preventing program in integrated operations.
Collapse
Affiliation(s)
- Kwang Won Seo
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Yeong Bin Kim
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Hye Young Jeon
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Suk-Kyung Lim
- Animal and Plant Quarantine Agency, Ministry of Agriculture, Food and Rural Affairs, Gimcheon 39660, Republic of Korea
| | - Young Ju Lee
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| |
Collapse
|
40
|
Lee JH, Yoon MH, Tahk SJ, Shin JH, Hwang GS, Choi SY, Choi BJ, Lim HS, Yang HM, Park JS, Seo KW. P3492Nonagenarians with acute myocardial infarction; invasive versus conservative strategy. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- J H Lee
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - M H Yoon
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - S J Tahk
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - J H Shin
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - G S Hwang
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - S Y Choi
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - B J Choi
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - H S Lim
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - H M Yang
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - J S Park
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - K W Seo
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| |
Collapse
|
41
|
Lee JH, Yoon MH, Tahk SJ, Shin JH, Hwang GS, Choi SY, Choi BJ, Lim HS, Yang HM, Park JS, Seo KW. P2627Comparision of 3-dimensional quantitative coronary angiography and intravascular ultrasound for detecting functionally significant coronary lesions. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2627] [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] [Indexed: 11/14/2022] Open
Affiliation(s)
- J H Lee
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - M H Yoon
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - S J Tahk
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - J H Shin
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - G S Hwang
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - S Y Choi
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - B J Choi
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - H S Lim
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - H M Yang
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - J S Park
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - K W Seo
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| |
Collapse
|
42
|
Kim YB, Seo HJ, Seo KW, Jeon HY, Kim DK, Kim SW, Lim SK, Lee YJ. Characteristics of High-Level Ciprofloxacin-Resistant Enterococcus faecalis and Enterococcus faecium from Retail Chicken Meat in Korea. J Food Prot 2018; 81:1357-1363. [PMID: 30015506 DOI: 10.4315/0362-028x.jfp-18-046] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [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: 11/11/2022]
Abstract
Genes encoding ciprofloxacin resistance in enterococci in animals may be transferred to bacteria in the animal gut and to zoonotic bacteria where they could pose a human health hazard. The objective of this study was to characterize antimicrobial resistance in high-level ciprofloxacin-resistant (HLCR) Enterococcus faecalis and Enterococcus faecium isolated from retail chicken meat. A total of 345 enterococci (335 E. faecalis and 10 E. faecium) were isolated from 200 chicken meat samples. Of these, 85 E. faecalis isolates and 1 E. faecium isolate were confirmed as HLCR enterococci. All 86 HLCR enterococci displayed gyrA- parC point mutations consisting of S83I-S80I (94.2%, 81 isolates), S83F-S80I (2.3%, 2 isolates), S83Y-S80I (2.3%, 2 isolates), and S83Y-S80F (1.2%, 1 isolate). Sixty-one (72.9%) of the 86 HLCR enterococci showed multidrug resistance to three to six classes of antimicrobial agents. Multilocus sequence typing revealed that E. faecalis had 17 different sequence types (ST) and E. faecium had 1 different ST, with ST256 observed most often (44 isolates, 51.8%). Although these results cannot exclude the possibility that pathotypes of enterococci isolated from chicken might represent transmission to or from humans, the foodborne HLCR E. faecalis indicated that the food chain is a potential route of enterococcal infection in humans.
Collapse
Affiliation(s)
- Yeong Bin Kim
- 1 College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: http://orcid.org/0000-0002-4754-0931 [Y.B.K.]); and
| | - Hyun Joo Seo
- 1 College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: http://orcid.org/0000-0002-4754-0931 [Y.B.K.]); and
| | - Kwang Won Seo
- 1 College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: http://orcid.org/0000-0002-4754-0931 [Y.B.K.]); and
| | - Hye Young Jeon
- 1 College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: http://orcid.org/0000-0002-4754-0931 [Y.B.K.]); and
| | - Dong Kyu Kim
- 1 College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: http://orcid.org/0000-0002-4754-0931 [Y.B.K.]); and
| | - Shin Woo Kim
- 1 College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: http://orcid.org/0000-0002-4754-0931 [Y.B.K.]); and
| | - Suk-Kyung Lim
- 2 Animal and Plant Quarantine Agency, Ministry of Agriculture, Food and Rural Affairs, Gimcheon 39660, Republic of Korea
| | - Young Ju Lee
- 1 College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: http://orcid.org/0000-0002-4754-0931 [Y.B.K.]); and
| |
Collapse
|
43
|
Lee JH, Yoon MH, Tahk SJ, Shin JH, Hwang GS, Choi SY, Choi BJ, Lim HS, Yang HM, Park JS, Seo KW. P794Comparision of efficacy and safety of 3-month dual antiplatelet therapy(DAPT) versus 6-month DAPT following Coroflex ISAR sirolimus-eluting stent(C-SES) implantation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p794] [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] [Indexed: 11/12/2022] Open
Affiliation(s)
- J H Lee
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - M H Yoon
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - S J Tahk
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - J H Shin
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - G S Hwang
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - S Y Choi
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - B J Choi
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - H S Lim
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - H M Yang
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - J S Park
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| | - K W Seo
- Ajou University Hospital, Cardiology, Suwon, Korea Republic of
| |
Collapse
|
44
|
Seo KW, Yoon MH, Tahk SJ, Shin JH, Hwang GS, Choi SY, Choi BJ, Lim HS, Yang HM, Park JS, Lee JH. P4626Clinical outcome of fractional flow reserve-guided deferred lesions in patients with acute coronary syndrome versus stable angina. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4626] [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] [Indexed: 11/12/2022] Open
Affiliation(s)
- K W Seo
- Ajou University School of Medicine, Suwon, Korea Republic of
| | - M H Yoon
- Ajou University School of Medicine, Suwon, Korea Republic of
| | - S J Tahk
- Ajou University School of Medicine, Suwon, Korea Republic of
| | - J H Shin
- Ajou University School of Medicine, Suwon, Korea Republic of
| | - G S Hwang
- Ajou University School of Medicine, Suwon, Korea Republic of
| | - S Y Choi
- Ajou University School of Medicine, Suwon, Korea Republic of
| | - B J Choi
- Ajou University School of Medicine, Suwon, Korea Republic of
| | - H S Lim
- Ajou University School of Medicine, Suwon, Korea Republic of
| | - H M Yang
- Ajou University School of Medicine, Suwon, Korea Republic of
| | - J S Park
- Ajou University School of Medicine, Suwon, Korea Republic of
| | - J H Lee
- Ajou University School of Medicine, Suwon, Korea Republic of
| |
Collapse
|
45
|
Seo KW, Lee YJ. Prevalence and Characterization of β-Lactamases Genes and Class 1 Integrons in Multidrug-Resistant Escherichia coli Isolates from Chicken Meat in Korea. Microb Drug Resist 2018; 24:1599-1606. [PMID: 29927695 DOI: 10.1089/mdr.2018.0019] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Antimicrobial resistance has become a serious public health threat throughout the world, and therapeutic options for several infectious diseases are currently limited by the presence of multidrug-resistant (MDR) bacteria. This study was designed to examine the drug resistance patterns, the prevalence of the β-lactamases, and class 1 integrons in MDR Escherichia coli isolates from chicken meat in Korea. Among 200 chicken meat samples, 101 isolates were observed to be positive for E. coli, of which 57 were identified as MDR E. coli. Among 57 MDR E. coli isolates, the prevalence of bla gene, blaCTX-M-1, blaCTX-M-14, and blaTEM-1, were identified in 2, 4, and 16 E. coli strains, respectively; only 1 E. coli strain had both, blaTEM-1 and blaCTX-M-1 genes. Twenty-one of the 57 MDR E. coli isolates also carried class 1 integrons, and 5 different gene cassette arrangements were found in 14 of the 21 class 1 integron-positive isolates. The β-lactamase-producing E. coli and integron-positive E. coli had significantly higher resistance to 16 antimicrobial drugs than the non-β-lactamase-producing E. coli and the integron-negative E. coli (p < 0.05). Our findings suggest that β-lactamase and class 1 integrons are widely distributed in E. coli isolates from chicken meat, and directly contribute to resistance to diverse antimicrobial agents. Therefore, continuous investigation of integron gene cassette arrays will provide useful information regarding antimicrobial resistance mechanisms.
Collapse
Affiliation(s)
- Kwang Won Seo
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Young Ju Lee
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| |
Collapse
|
46
|
Kim YB, Seo KW, Jeon HY, Lim SK, Lee YJ. Characteristics of the antimicrobial resistance of Staphylococcus aureus isolated from chicken meat produced by different integrated broiler operations in Korea. Poult Sci 2018; 97:962-969. [DOI: 10.3382/ps/pex357] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Indexed: 12/13/2022] Open
|
47
|
Ha JS, Seo KW, Kim YB, Kang MS, Song CS, Lee YJ. Prevalence and characterization of Salmonella in two integrated broiler operations in Korea. Ir Vet J 2018; 71:3. [PMID: 29372048 PMCID: PMC5769421 DOI: 10.1186/s13620-018-0114-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 08/31/2017] [Accepted: 01/08/2018] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Vertical integration of the broiler industry allows producers to combine different biosecurity and sanitation practices, housing technologies, and feeding regimens to improve food safety. The purpose of this study was to investigate the prevalence and distribution of Salmonella, to determine the source of Salmonella contaminants, and to reveal the relationships between isolates at each step in the vertically integrated broiler production system in two representative integrated broiler companies in Korea. RESULTS A total of 2148 samples were collected from 2 broiler breeder hatcheries, 14 broiler breeder farms, 3 broiler hatcheries, 16 broiler farms, 8 broiler transporting trucks and 6 slaughterhouses belonging to representative integrated broiler companies, and 205 (9.5%) of these samples were positive for Salmonella. The Salmonella prevalence in broiler hatcheries (34.0%) and broiler transporting trucks (62.5%) was higher (P < 0.05) whereas that in the broiler breeder hatchery (0.8%) was lower (P < 0.05), than the overall prevalence. Nine and 13 different Salmonella serotypes were isolated from integrated companies A and B, and the predominant serotypes were S. Virchow (39.7%) and S. Hadar (59.2%), respectively. Pulsed field gel electrophoresis patterns of isolates from the two operations showed significant genetic relatedness within a single system. CONCLUSIONS In a comparison of the two operations that participated in this study, the prevalence of Salmonella differed significantly between the broiler breeder hatchery, and broiler hatcheries and broiler farms.
Collapse
Affiliation(s)
- Jong Su Ha
- Samhwa GPS Breeding Agri. Inc., 32291, Hongseong, South Korea
| | - Kwang Won Seo
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, 41566, Daegu, South Korea
| | - Yeong Bin Kim
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, 41566, Daegu, South Korea
| | - Min Su Kang
- Animal and Plant Quarantine Agency, Ministry of Agriculture, Food and Rural Affairs, 39660, Gimcheon, South Korea
| | - Chang-Seon Song
- Avian Disease Laboratory, College of Veterinary Medicine, Konkuk University, 05029, Seoul, South Korea
| | - Young Ju Lee
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, 41566, Daegu, South Korea
| |
Collapse
|
48
|
Jung HS, Kang BJ, Ra SW, Seo KW, Jegal Y, Jun JB, Jung J, Jeong J, Jeon HJ, Ahn JS, Lee T, Ahn JJ. Corrigendum: Elucidation of Bacterial Pneumonia-Causing Pathogens in Patients with Respiratory Viral Infection. Tuberc Respir Dis (Seoul) 2018; 81:349. [PMID: 30238717 PMCID: PMC6148099 DOI: 10.4046/trd.2017.0044.r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
49
|
Jung HS, Kang BJ, Ra SW, Seo KW, Jegal Y, Jun JB, Jung J, Jeong J, Jeon HJ, Ahn JS, Lee T, Ahn JJ. Elucidation of Bacterial Pneumonia-Causing Pathogens in Patients with Respiratory Viral Infection. Tuberc Respir Dis (Seoul) 2017; 80:358-367. [PMID: 28905531 PMCID: PMC5617852 DOI: 10.4046/trd.2017.0044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 02/27/2017] [Revised: 05/30/2017] [Accepted: 06/29/2017] [Indexed: 01/17/2023] Open
Abstract
Background Bacterial pneumonia occurring after respiratory viral infection is common. However, the predominant bacterial species causing pneumonia secondary to respiratory viral infections other than influenza remain unknown. The purpose of this study was to know whether the pathogens causing post-viral bacterial pneumonia vary according to the type of respiratory virus. Methods Study subjects were 5,298 patients, who underwent multiplex real-time polymerase chain reaction for simultaneous detection of respiratory viruses, among who visited the emergency department or outpatient clinic with respiratory symptoms at Ulsan University Hospital between April 2013 and March 2016. The patients' medical records were retrospectively reviewed. Results A total of 251 clinically significant bacteria were identified in 233 patients with post-viral bacterial pneumonia. Mycoplasma pneumoniae was the most frequent bacterium in patients aged <16 years, regardless of the preceding virus type (p=0.630). In patients aged ≥16 years, the isolated bacteria varied according to the preceding virus type. The major results were as follows (p<0.001): pneumonia in patients with influenza virus (type A/B), rhinovirus, and human metapneumovirus infections was caused by similar bacteria, and the findings indicated that Staphylococcus aureus pneumonia was very common in these patients. In contrast, coronavirus, parainfluenza virus, and respiratory syncytial virus infections were associated with pneumonia caused by gram-negative bacteria. Conclusion The pathogens causing post-viral bacterial pneumonia vary according to the type of preceding respiratory virus. This information could help in selecting empirical antibiotics in patients with post-viral pneumonia.
Collapse
Affiliation(s)
- Hwa Sik Jung
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Byung Ju Kang
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Seung Won Ra
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Kwang Won Seo
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Yangjin Jegal
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Jae Bum Jun
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Jiwon Jung
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Joseph Jeong
- Department of Laboratory Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Hee Jeong Jeon
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Jae Sung Ahn
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Taehoon Lee
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
| | - Jong Joon Ahn
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
| |
Collapse
|
50
|
Kwon D, Ji M, Lee S, Seo KW, Kang KS. Reprogramming Enhancers in Somatic Cell Nuclear Transfer, iPSC Technology, and Direct Conversion. Stem Cell Rev Rep 2016; 13:24-34. [DOI: 10.1007/s12015-016-9697-x] [Citation(s) in RCA: 12] [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] [Indexed: 01/01/2023]
|