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Ham JR, Lee MK. Anti‑osteoclastogenic effect of fermented mealworm extract by inhibiting RANKL‑induced NFATc1 action. Exp Ther Med 2024; 27:130. [PMID: 38414787 PMCID: PMC10895579 DOI: 10.3892/etm.2024.12418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 01/17/2024] [Indexed: 02/29/2024] Open
Abstract
Augmented osteoclast activity and differentiation can lead to destructive bone diseases, such as arthritis and osteoporosis. Therefore, modulating osteoclastogenesis and differentiation may serve to be a possible strategy for treating such diseases. Tenebrio molitor larvae, also known as mealworms, are considered a good source of protein with nutritional value, digestibility, flavor and functional properties, such as antioxidant, anti-diabetic and anti-obesity effects. However, the role of mealworms in osteoclastogenesis remains poorly understood. The present study therefore investigated the effects of fermented mealworm extract (FME) on receptor activator of nuclear factor κB ligand (RANKL)-induced osteoclastogenesis in bone marrow-derived macrophages (BMMs) whilst also attempting to understand the underlying mechanism, if any. The cells treated with RANKL were used as the negative control. To prepare FME, defatted mealworm powder was fermented with a Saccharomyces cerevisiae strain, and then extracted with fermented alcohol. Cell viability of BMMs isolated from 5-week-old Institute of Cancer Research mice was measured using Cell Counting Kit-8 assay. Subsequently, the effects of FME on osteoclast differentiation were measured using tartrate-resistant acid phosphatase (TRAP) staining. In addition, expression of markers associated with osteoclast differentiation was assessed by reverse transcription-quantitative PCR. Expression of nuclear factor of activated T-cells cytoplasmic 1 (NFATc1) was assessed by western blotting. TRAP staining revealed that FME inhibited osteoclast differentiation in a dose-dependent manner (10-100 µg/ml) without causing cytotoxicity. Specifically, the formation of osteoclasts appear to have been suppressed by FME as indicated by the reduction in the number of TRAP-positive multinucleated cells observed. Furthermore, FME treatment significantly decreased the mRNA expression of c-Fos, whilst also significantly decreasing the expression of NFATc1 on both protein and mRNA levels. c-Fos and NFATc1 are transcription factors that can regulate osteoclast differentiation. FME treatment also reduced the expression of genes associated with osteoclast differentiation and function, including dendritic cell-specific transmembrane protein, osteoclast associated Ig-like receptor, Cathepsin K and TRAP, compared with that in the control group. Subsequently, FME was found to effectively suppress RANKL-induced osteoclast differentiation compared with that by the non-fermented mealworm extract. These findings suggest that FME may confer anti-osteoclastogenic effects, providing insights into its potential application in treatment of osteoporosis.
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Affiliation(s)
- Ju Ri Ham
- Department of K-Gim Industry-Strategy, Mokpo Marine Food-Industry Research Center, Mokpo, Jeollanam-do 58621, Republic of Korea
| | - Mi-Kyung Lee
- Department of Food and Nutrition, Sunchon National University, Suncheon, Jeollanam-do 57922, Republic of Korea
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Lee HJ, Jang S, Lee JY, Ah YM, Lee MK, Jang S, An S, Kim JH. Development of a multidisciplinary medication management program in nursing homes: protocol for a randomized controlled trial : Multidisciplinary medication management in nursing homes. BMC Geriatr 2024; 24:218. [PMID: 38438996 PMCID: PMC10910765 DOI: 10.1186/s12877-024-04844-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/24/2024] [Indexed: 03/06/2024] Open
Abstract
BACKGROUND Polypharmacy and the use of potentially inappropriate medications are common among nursing home residents and are associated with negative outcomes. Although deprescribing has been proposed as a way to curtail these problems, the best way to implement multidisciplinary comprehensive medication review and deprescribing and its real impact in specific high-risk populations, such as nursing home residents, is still unclear. This multicenter randomized controlled clinical trial aims to assess the effects of a multidisciplinary mediation management program on medication use and health problems. METHODS A total of 1,672 residents aged ≥ 65 years from 22 nursing homes in South Korea who meet the targeted criteria, such as the use of ≥ 10 medications, are eligible to participate. The experimental group will receive a comprehensive medication review, deprescription, and multidisciplinary case conference with the help of platform. Outcomes will be measured at baseline, at the end of the intervention, as well as at 3, 6, 9, and 12 months after the end of the intervention. The primary endpoints will be the rate of adverse drug events, number of potentially inappropriate medications/potentially inappropriate medication users/two or more central nervous system drug/ central nervous system drug users, delirium, emergency department visits, hospitalization, and falls. The secondary endpoint will be the number of medications taken and polypharmacy users. DISCUSSION Our trial design is unique in that it aims to introduce a structured operationalized clinical program focused on reducing polypharmacy and potentially inappropriate medications in a nursing home setting with large samples. TRIAL REGISTRATION Ethical approval was granted by the public institutional review board of the Ministry of Health and Welfare (2022-1092-009). The study is also registered with the Clinical Research Information Service (Identifier: KCT0008157, Development and evaluation of a multidisciplinary medication management program in long-term care facility residents Status: Approved First Submitted Date: 2023/01/18 Registered Date: 2023/02/03 Last Updated Date: 2023/01/18 (nih.go.kr) https://cris.nih.go.kr/ ), which includes all items from the World Health Organization Trial Registration Dataset.
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Affiliation(s)
- Hye Jun Lee
- Department of Family Medicine, Chung-Ang University Hospital, College of Medicine, Chung-Ang University, Seoul, 06973, South Korea
| | - Sunmee Jang
- College of Pharmacy and Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon, South Korea
| | - Ju-Yeun Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, South Korea
| | - Young-Mi Ah
- College of Pharmacy, Yeungnam University, Gyeongsan, Gyeongbuk, South Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University Hospital, College of Medicine, Chung-Ang University, Seoul, South Korea
| | - Suhyun Jang
- College of Pharmacy and Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon, South Korea
| | - Sena An
- Department of Family Medicine, Chung-Ang University Hospital, College of Medicine, Chung-Ang University, Seoul, 06973, South Korea
| | - Jung-Ha Kim
- Department of Family Medicine, Chung-Ang University Hospital, College of Medicine, Chung-Ang University, Seoul, 06973, South Korea.
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Roh YJ, Choi YH, Shin SH, Lee MK, Won YJ, Lee JH, Cho BS, Park KY, Seo SJ. Adipose tissue-derived exosomes alleviate particulate matter-induced inflammatory response and skin barrier damage in atopic dermatitis-like triple-cell model. PLoS One 2024; 19:e0292050. [PMID: 38241278 PMCID: PMC10798485 DOI: 10.1371/journal.pone.0292050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 09/11/2023] [Indexed: 01/21/2024] Open
Abstract
Recently, particulate matter (PM) has been shown to exacerbate atopic dermatitis (AD) by inducing an inflammatory response. Meanwhile, several studies revealed that exosomes derived from adipose tissue-derived mesenchymal stem cells promote wound healing and alleviate inflammation via their regenerative and immunomodulatory capacities. Our study aimed to investigate the effects of human adipose tissue-derived mesenchymal stem cell-derived (ASC)-exosomes in PM-induced AD. An AD-like triple-cell model was established by treating human keratinocytes, dermal fibroblasts, and mast cells with polyinosinic:polycytidylic acid (Poly I:C) and interleukin 1 alpha (IL-1α). The effects of PM and ASC-exosomes on the expression of pro-inflammatory cytokines and skin barrier proteins were examined using quantitative real-time polymerase chain reaction, western blotting, and immunofluorescence. PM increased pro-inflammatory cytokines (IL-6, IL-1β, and IL-1α) and decreased the anti-inflammatory cytokine IL-10, while the mRNA expression of skin barrier proteins (loricrin and filaggrin) decreased. However, when the cells were treated with ASC-exosomes, the PM-induced effects on pro-inflammatory cytokines and skin barrier proteins were reversed. Our results confirmed that PM-induced inflammation and skin barrier damage were alleviated by ASC-exosomes in our AD-like triple-cell model. These data suggest that ASC-exosomes can serve as a therapeutic agent for PM-exacerbated AD.
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Affiliation(s)
- Yoon Jin Roh
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Yong Hee Choi
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Yu Jin Won
- ExoCoBio Exosome Institute (EEI), ExoCoBio Inc., Seoul, Korea
| | - Jun Ho Lee
- ExoCoBio Exosome Institute (EEI), ExoCoBio Inc., Seoul, Korea
| | - Byong Seung Cho
- ExoCoBio Exosome Institute (EEI), ExoCoBio Inc., Seoul, Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Seong Jun Seo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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Yoon S, Hong ME, Hong SA, Kim TH, Lee MK. Prevalence estimation of Tropheryma whipplei in duodenal biopsy tissues of Koreans. Ann Clin Microbiol Antimicrob 2024; 23:2. [PMID: 38172885 PMCID: PMC10765791 DOI: 10.1186/s12941-023-00658-z] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 12/05/2023] [Indexed: 01/05/2024] Open
Abstract
Whipple's disease caused by Tropheryma whipplei is difficult to diagnose because of a broad spectrum of manifestations and non-specific clinical signs. In the current global era, the incidence of duodenal infection/inflammation caused by T. whipplei in Korea may has been underestimated. Here we estimated the prevalence of T. whipplei in duodenal biopsy tissues of Koreans using real-time PCRs (RT-PCRs). A total of 252 duodenal biopsy tissues were collected from Korean patients who underwent esophagogastroduodenoscopy and duodenal biopsy. DNA extracted from the duodenal biopsy tissues was analyzed using three RT-PCRs targeting T. whipplei-specific regions of the 16S-23S rRNA intergenic spacer, hsp65, and Dig15 in parallel. In the samples positive in RT-PCRs, direct sequencing was performed for each RT-PCR target. The prevalence of T. whipplei was estimated based on the RT-PCR and sequencing results. Among the analyzed samples, T. whipplei was not detected. The prevalence of T. whipplei in duodenal biopsy tissues of Koreans was estimated to be less than 0.4%. This is the first study to attempt to detect T. whipplei in duodenal biopsy tissues of Koreans and estimate its prevalence. Our findings infer that while T. whipplei carriers exist in Korea, the incidence of duodenal infection/inflammation caused by T. whipplei is extremely rare.
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Affiliation(s)
- Sumi Yoon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Min Eui Hong
- Department of Pathology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Soon Auck Hong
- Department of Pathology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Tae-Hyoung Kim
- Department of Urology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea.
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Baek HS, Guan Y, Kim MJ, Jiang Y, Lee MK, Kim KH, Lee J, Shin Y, Kang YH, Li Z. Emticicia fluvialis sp. nov., a potential hormone-degrading bacterium isolated from Nakdong River, Republic of Korea. Antonie Van Leeuwenhoek 2023; 116:1317-1326. [PMID: 37773469 DOI: 10.1007/s10482-023-01889-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 09/14/2023] [Indexed: 10/01/2023]
Abstract
A novel species of the genus Emticicia, designated BHSR1T, was isolated from a water sample that was collected from the Nakdong River, Republic of Korea, and its taxonomic affiliation was studied using a polyphasic approach. This bacterium was Gram-stain-negative, non-motile, aerobic, curved, rod-shaped, and oxidase- and catalase-negative. The bacterium grew optimally at 37 °C, pH 7.5 and 0% (w/v) NaCl. Phylogenetic analyses based on 16S rRNA gene sequences indicated that strain BHSR1T should be affiliated with the genus Emticicia, with a high similarity to Emticicia fontis KCTC 52248T (98.10%). Phylogenomic analysis also suggested that the strain represents a novel species in the genus Emticicia. The genomic G + C content was 41.9%. The average nucleotide identity, average amino acid identity and digital DNA-DNA hybridization between strain BHSR1T and its closely related relatives in the genus Emticicia were in ranges of 71.1-75.8%, 69.4-77.5% and 18.6-19.9%, respectively. The gene cluster within BHSR1T contained genes encoding enzymes that could be involved in hormone degradation. The major cellular fatty acids (> 10%) were summed feature 3 (comprising C16:1ω6c and/or C16:1ω7c) and iso-C15:0. With regards to the polar lipid profile, phosphatidylethanolamine (PE), two unidentified aminolipids and three unidentified lipids were identified as the major compounds. The major respiratory quinone was menaquinone (MK)-7. Based on its phylogenetic, phenotypic, chemotaxonomic, and genomic features, strain BHSR1T should be considered a novel species in the genus Emticicia of the family Spirosomaceae, for which the name Emticicia fluvialis sp. nov. is proposed. The type strain was considered BHSR1T (= KCTC 92622T = GDMCC 1.3740T).
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Affiliation(s)
- Hyun-Sun Baek
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
- Department of Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Yong Guan
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Min-Ju Kim
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
- Department of Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Yue Jiang
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Mi-Kyung Lee
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Ki-Hyun Kim
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Jaeyoon Lee
- Water Environment Research Department, National Institute of Environmental Research, Incheon, 22689, Republic of Korea
| | - Yuna Shin
- Water Environment Research Department, National Institute of Environmental Research, Incheon, 22689, Republic of Korea
| | - Yoon-Ho Kang
- Water Environment Research Department, National Institute of Environmental Research, Incheon, 22689, Republic of Korea.
| | - Zhun Li
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea.
- Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea.
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Choe KW, Lim YK, Lee MK. Comparison of new and old BacT/ALERT aerobic bottles for detection of Candida species. PLoS One 2023; 18:e0288674. [PMID: 38019833 PMCID: PMC10686453 DOI: 10.1371/journal.pone.0288674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 11/10/2023] [Indexed: 12/01/2023] Open
Abstract
PURPOSE A new version of aerobic blood culture media has been developed for the BacT/ALERT (bioMérieux) blood culture system. We evaluated the time to detection and yeast cell counts in positive blood cultures for each Candida spp. according to changes in media. METHODS Isolates from defibrinated horse blood were inoculated into three types of bottles: the old version of aerobic bottle, new version of aerobic bottle, and anaerobic bottle. All bottles were incubated in the BacT/ALERT Virtuo blood culture system. The time to detection was monitored for each bottle, and yeast cell counts were performed immediately after testing positive, determined via the plate count method. Clinical retrospective data of the candidemia samples before and after aerobic bottle change also were analyzed. RESULTS The median time to detection was 52.47 hours in the old aerobic bottles versus 19.92 hours in the new aerobic bottles (P < 0.001) for Candida glabrata, and standard and clinical strains showed similar results. C. albicans (27.6 to 24.95 hours) and C. guilliermondii (28.92 to 26.9 hours) had shorter time to detection. However, C. auris (25.43 to 28.25 hours) had a longer time to detection in the new aerobic bottle. The retrospective clinical analysis showed a significant decrease in time to detection (45.0 to 19.4 hours) for C. glabrata, which is consistent with our simulated study result for C. glabrata. As a result of analysis including all blood specimens, C. tropicalis showed a significant delay in time to detection in new aerobic bottles. In an analysis limited to peripheral blood specimens, the time to detection of C. parapsilosis was longer in new aerobic bottles than in old aerobic bottles. CONCLUSION Most Candida species did not show remarkable TTD differences, but TTD of C. glabrata was markedly reduced in the New FA Plus bottle. The reduction of time to detection enables faster detection and therapeutic approach for C. glabrata infections.
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Affiliation(s)
- Kye Won Choe
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Yong Kwan Lim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
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Park JW, Han HS, Choi Y, Seo SJ, Park KY, Lee MK. Contamination Leading to Pseudo-Outbreak of Cladosporium species from the Department of Dermatology. Ann Dermatol 2023; 35:S335-S337. [PMID: 38061734 PMCID: PMC10727853 DOI: 10.5021/ad.21.251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/30/2021] [Accepted: 12/03/2021] [Indexed: 12/20/2023] Open
Affiliation(s)
- Jae Wan Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Hye Sung Han
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Yoojeong Choi
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Seong Jun Seo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea.
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea.
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Cha YE, Ro WB, Song SJ, Lee MK, Kang MH, Park HM. Case report: A novel occurrence of persistent left cranial vena cava coexisting with polycystic kidney disease in a cat. Front Vet Sci 2023; 10:1268493. [PMID: 37869489 PMCID: PMC10585034 DOI: 10.3389/fvets.2023.1268493] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 09/21/2023] [Indexed: 10/24/2023] Open
Abstract
A 7-year-old castrated male Munchkin cat was presented with anorexia. This cat had been diagnosed with chronic kidney disease due to polycystic kidney disease. Tachycardia with a systolic murmur (grade III/VI) was auscultated and for further diagnosis, echocardiography was performed. Based on echocardiography, persistent left cranial vena cava (PLCVC) was suspected due to enlargement of the coronary sinus and confirmed by saline contrast echocardiography. The dilated coronary sinus compressed the left atrium, and left ventricular hypertrophy with the systolic anterior motion of the mitral valve, aortic regurgitation, and mitral regurgitation were identified. After medical management using atenolol, left atrial function and other hemodynamics of the heart were improved, including the disappearance of regurgitation and normalization of left ventricular wall thickness. This case report describes the echocardiographic characteristics, diagnostic procedures, and disease progression in a cat with PLCVC after medical management using atenolol. Additionally, this is the first report of a cat with PLCVC, coexisting with polycystic kidney disease.
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Affiliation(s)
- Ye-Eun Cha
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Woong-Bin Ro
- Department of Veterinary Emergency and Critical Care Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, Republic of Korea
| | - Seung-Ji Song
- Cat Vet Animal Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Mi-Kyung Lee
- Cat Vet Animal Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Min-Hee Kang
- Department of Bio-animal Care, Jangan University, Hwaseong-si, Gyeonggi-do, Republic of Korea
| | - Hee-Myung Park
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
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Choi RY, Lee MK. Effects of Mealworm Fermentation Extract and Soy Protein Mix Ratio on Hepatic Glucose and Lipid Metabolism in Obese-Induced Mice. Prev Nutr Food Sci 2023; 28:255-262. [PMID: 37842251 PMCID: PMC10567600 DOI: 10.3746/pnf.2023.28.3.255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/30/2023] [Accepted: 06/20/2023] [Indexed: 10/17/2023] Open
Abstract
Previous studies found that mealworm fermentation extract (TMP) reduced alcoholic hepatic steatogenesis. This study examined how the ratio of TMP and soy protein (SP) mix affected glucose and lipid metabolism in obese mice given a high-fat diet (HFD). Mice were given HFD supplemented with 100% SP or the following three ratios of TMP and SP mix for 12 weeks: 20% (S4T1), 40% (S3T2), and 60% (S2T3) TMP. When compared to the SP group, the S2T3 group had considerably lower body weight gain and food consumption. When compared to the SP group, the S2T3 group had slightly lower blood insulin and leptin levels, as well as a lower homeostasis model assessment of insulin resistance score. The use of TMP instead of SP reduced the size of epididymal adipose tissue cells. An increase in the extent of substitution of SP with TMP inhibited the gene expression of hepatic fructolysis/gluconeogenesis (KHK, ALDOB, DLD, and FBP1), lipogenesis (FAS, SCD1, CD36, and DGAT2), and its transcriptional factors (PPARγ and ChREBP). Furthermore, the S2T3 group dramatically reduced the expression of hepatic genes implicated in endoplasmic reticulum stress (PDI) and antioxidant defense (SOD1). The 60% TMP mix, in particular, reduced the expression of hepatic glucose and lipid metabolismrelated genes in HFD-fed mice. The manufacturing of functional processed goods may be accomplished by combining SP and TMP in a 2:3 ratio.
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Affiliation(s)
- Ra-Yeong Choi
- Department of Agricultural Biology, National Institution of Agricultural Sciences, Rural Development Administration, Jeonbuk 55365, Korea
| | - Mi-Kyung Lee
- Department of Food and Nutrition, Sunchon National University, Jeonnam 57922, Korea
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Han J, Ham JR, Lee MJ, Lee HJ, Son YJ, Lee MK. "Nulichal" Barley Extract Suppresses Nitric Oxide and Pro-Inflammatory Cytokine Production by Lipopolysaccharides in RAW264.7 Macrophage Cell Line. Prev Nutr Food Sci 2023; 28:370-376. [PMID: 37842259 PMCID: PMC10567604 DOI: 10.3746/pnf.2023.28.3.370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 10/17/2023] Open
Abstract
The cultivar "Nulichal," a type of naked waxy barley (Hordeum vulgare L.), was developed by the National Institute of Crop Science, Rural Development Administration, Korea, in 2010. In this study, we investigated the anti-inflammatory and antioxidant properties of the "Nulichal" ethanol extract (NRE) using various assays. The NRE exhibited a total phenolic content of 7.55±0.30 mg gallic acid equivalent/g and a flavonoid content of 1.74±0.08 mg rutin equivalent/g. Cell viability assays showed no toxicity of NRE on RAW264.7 macrophage cells up to concentrations of 500 μg/mL. The NRE (300 and 500 μg/mL) significantly reduced nitric oxide (NO) production induced by lipopolysaccharides (LPS). It also down-regulated the mRNA expression and protein levels of inducible NO synthase and cyclooxygenase-2 in a dose-dependent manner. Moreover, the NRE treatment significantly decreased the levels of pro-inflammatory cytokines, such as tumor necrosis factor-α and interleukin-6, and their mRNA expression compared to LPS treatment alone. The NRE demonstrated strong free radical scavenging activity against 2,2-diphenyl-1-picrylhydrazyl and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radicals in a dose-dependent manner. The ferric reducing antioxidant power assay also showed increased antioxidant activity with increasing NRE concentrations. These findings suggest that the NRE can be used as a functional food with anti-inflammatory and antioxidant properties.
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Affiliation(s)
- Jisu Han
- Department of Food and Nutrition, Sunchon National University, Jeonnam 57922, Korea
| | - Ju Ri Ham
- Mokpo Marine Food-Industry Research Center, Jeonnam 5861, Korea
| | - Mi Ja Lee
- Crop Foundation Research Division, National Institute of Crop Science, Rural Development Administration (RDA), Jeonbuk 5565, Korea
| | - Hyun-Jin Lee
- Crop Foundation Research Division, National Institute of Crop Science, Rural Development Administration (RDA), Jeonbuk 5565, Korea
| | - Young-Jin Son
- Department of Pharmacy, Sunchon National University, Jeonnam 57922, Korea
| | - Mi-Kyung Lee
- Department of Food and Nutrition, Sunchon National University, Jeonnam 57922, Korea
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Vig I, Benkő Z, Gila BC, Palczert Z, Jakab Á, Nagy F, Miskei M, Lee MK, Yu JH, Pócsi I, Emri T. Functional characterization of genes encoding cadmium pumping P 1B-type ATPases in Aspergillus fumigatus and Aspergillus nidulans. Microbiol Spectr 2023; 11:e0028323. [PMID: 37676031 PMCID: PMC10581124 DOI: 10.1128/spectrum.00283-23] [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: 01/18/2023] [Accepted: 06/12/2023] [Indexed: 09/08/2023] Open
Abstract
Several P1B-type ATPases are important Cd2+/Cu2+ pumps in Aspergillus species, and they are tightly associated with the heavy metal stress tolerance of these ascomycetous fungi. To better understand the roles of the two P1B-type ATPases, Aspergillus nidulans CrpA Cd2+/Cu2+ pump (orthologue of the Candida albicans Crp1 Cd2+/Cu2+ pump) and Aspergillus fumigatus PcaA Cd2+ pump (orthologue of the Saccharomyces cerevisiae Pca1 Cd2+ pump), we have generated individual mutants and characterized their heavy metal susceptibilities. The deletion of CrpA in A. nidulans has led to the increased sensitivity of the fungus to stresses induced by Zn2+, Fe2+, or the combination of oxidative-stress-inducing menadione sodium bisulfite and Fe3+. Heterologous expression of A. fumigatus PcaA in the S. cerevisiae pca1 deletion mutant has resulted in enhanced tolerance of the yeast to stresses elicited by Cd2+or Zn2+ but not by Fe2+/Fe3+ or Cu2+. Mammalian host immune defense can attack microbes by secreting Zn2+ or Cu2+, and the oxidative stress induced by host immune systems can also disturb metal (Cu2+, Fe2+, and Zn2+) homeostasis in microbes. In summary, PcaA and CrpA can protect fungal cells from these complex stresses that contribute to the virulence of the pathogenic Aspergillus species. Moreover, due to their presence on the fungal cell surface, these P1B-type ATPases may serve as a novel drug target in the future. IMPORTANCE Mammalian host immune defense disrupts heavy metal homeostasis of fungal pathogens. P1B-type ATPase of Aspergillus fumigatus and Aspergillus nidulans may help to cope with this stress and serve as virulence traits. In our experiments, both A. nidulans Cd2+/Cu2+ pump CrpA and A. fumigatus Cd2+ pump PcaA protected fungal cells from toxic Zn2+, and CrpA also decreased Fe2+ susceptibility most likely indirectly. In addition, CrpA protected cells against the combined stress induced by the oxidative stressor menadione and Fe3+. Since P1B-type ATPases are present on the fungal cell surface, these proteins may serve as a novel drug target in the future.
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Affiliation(s)
- Ildikó Vig
- Department of Molecular Biotechnology and Microbiology, Faculty of Sciences and Technology, University of Debrecen, Debrecen, Hungary
- ELRN-UD Fungal Stress Biology Research Group, Debrecen, Hungary
| | - Zsigmond Benkő
- Department of Molecular Biotechnology and Microbiology, Faculty of Sciences and Technology, University of Debrecen, Debrecen, Hungary
| | - Barnabás Cs. Gila
- Department of Molecular Biotechnology and Microbiology, Faculty of Sciences and Technology, University of Debrecen, Debrecen, Hungary
| | - Zoltán Palczert
- Department of Molecular Biotechnology and Microbiology, Faculty of Sciences and Technology, University of Debrecen, Debrecen, Hungary
| | - Ágnes Jakab
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Fruzsina Nagy
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Márton Miskei
- ELRN-UD Fungal Stress Biology Research Group, Debrecen, Hungary
| | - Mi-Kyung Lee
- Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, South Korea
| | - Jae-Hyuk Yu
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - István Pócsi
- Department of Molecular Biotechnology and Microbiology, Faculty of Sciences and Technology, University of Debrecen, Debrecen, Hungary
- ELRN-UD Fungal Stress Biology Research Group, Debrecen, Hungary
| | - Tamás Emri
- Department of Molecular Biotechnology and Microbiology, Faculty of Sciences and Technology, University of Debrecen, Debrecen, Hungary
- ELRN-UD Fungal Stress Biology Research Group, Debrecen, Hungary
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12
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Yoon S, Lim YK, Kweon OJ, Kim TH, Lee MK. Clinical performance of SARS-CoV-2 antigen-detection rapid diagnostic test using SERS-based lateral flow immunoassay. Heliyon 2023; 9:e19492. [PMID: 37809408 PMCID: PMC10558587 DOI: 10.1016/j.heliyon.2023.e19492] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/16/2023] [Accepted: 08/24/2023] [Indexed: 10/10/2023] Open
Abstract
Background 'ACROSIS COVID-19 Ag (NPS)' kit (SG Medical, Seoul, Korea) is a newly developed severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antigen-detection rapid diagnostic test (Ag-RDT) using surface-enhanced Raman scattering (SERS)-based lateral flow immunoassay (LFIA). We evaluated its clinical performance compared with STANDARD Q COVID-19 Ag (SD Biosensor, Suwon, Korea), a previously approved Ag-RDT. Methods A total of 286 nasopharyngeal swab specimens were collected: 104 positive and 182 negative specimens in SARS-CoV-2 real-time reverse-transcription polymerase-chain-reaction (rRT-PCR). SARS-CoV-2-positive specimens were divided according to the cycle threshold (Ct) value in rRT-PCR. The clinical performance of ACROSIS was compared with that of STANDARD Q. Results ACROSIS showed significantly higher sensitivity than STANDARD Q (92.3% vs. 85.6%, P = 0.02), especially in specimens with 25 ≤ Ct < 30 (78.6% vs. 42.9%). The Ct values of RdRp/S genes for 95% detection rates by ACROSIS and STANDARD Q were 25.8 and 23.0, respectively. Conclusions This is the first study that evaluated the performance of ACROSIS compared with STANDARD Q. The overall clinical performance of ACROSIS was superior to that of STANDARD Q, especially in specimens with 25 ≤ Ct < 30. ACROSIS could be useful for SARS-CoV-2 Ag detection even in relatively low viral load specimens.
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Affiliation(s)
- Sumi Yoon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Yong Kwan Lim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Oh Joo Kweon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Tae-Hyoung Kim
- Department of Urology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, South Korea
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13
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Lee MK, Basch E, Mitchell SA, Minasian LM, Langlais BT, Thanarajasingam G, Ginos BF, Rogak LJ, Mendoza TR, Bennett AV, Schrag D, Mazza GL, Dueck AC. Reliability and validity of PRO-CTCAE® daily reporting with a 24-hour recall period. Qual Life Res 2023; 32:2047-2058. [PMID: 36897529 PMCID: PMC10241696 DOI: 10.1007/s11136-023-03374-5] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2023] [Indexed: 03/11/2023]
Abstract
PURPOSE The standard recall period for the patient-reported outcomes version of the common terminology criteria for adverse events (PRO-CTCAE®) is the past 7 days, but there are contexts where a 24-hour recall may be desirable. The purpose of this analysis was to investigate the reliability and validity of a subset of PRO-CTCAE items captured using a 24-hour recall. METHODS 27 PRO-CTCAE items representing 14 symptomatic adverse events (AEs) were collected using both a 24-hour recall (24 h) and the standard 7 day recall (7d) in a sample of patients receiving active cancer treatment (n = 113). Using data captured with a PRO-CTCAE-24h on days 6 and 7, and 20 and 21, we computed intra-class correlation coefficients (ICC); an ICC ≥ 0.70 was interpreted as demonstrating high test-retest reliability. Correlations between PRO-CTCAE-24h items on day 7 and conceptually relevant EORTC QLQ-C30 domains were examined. In responsiveness analysis, patients were deemed changed if they had a one-point or greater change in the corresponding PRO-CTCAE-7d item (from week 0 to week 1). RESULTS PRO-CTCAE-24h captured on two consecutive days demonstrated that 21 of 27 items (78%) had ICCs ≥ 0.70 (day 6/7 median ICC 0.76), (day 20/21 median ICC 0.84). Median correlation between attributes within a common AE was 0.75, and the median correlation between conceptually relevant EORTC QLQ-C30 domains and PRO-CTCAE-24 h items captured on day 7 was 0.44. In the analysis of responsiveness to change, the median standardized response mean (SRM) for patients with improvement was - 0.52 and that for patients with worsening was 0.71. CONCLUSION A 24-hour recall period for PRO-CTCAE items has acceptable measurement properties and can inform day-to-day variations in symptomatic AEs when daily PRO-CTCAE administration is implemented in a clinical trial.
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Affiliation(s)
- M K Lee
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, USA.
| | - E Basch
- UNC Lineberger Comprehensive Cancer Center, Chapel Hill, NC, USA
| | | | | | - B T Langlais
- Department of Quantitative Health Sciences, Mayo Clinic, Scottsdale, AZ, USA
| | | | - B F Ginos
- Department of Quantitative Health Sciences, Mayo Clinic, Scottsdale, AZ, USA
| | - L J Rogak
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | | - A V Bennett
- UNC Lineberger Comprehensive Cancer Center, Chapel Hill, NC, USA
| | - D Schrag
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - G L Mazza
- Department of Quantitative Health Sciences, Mayo Clinic, Scottsdale, AZ, USA
| | - A C Dueck
- Department of Quantitative Health Sciences, Mayo Clinic, Scottsdale, AZ, USA
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14
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Kim MJ, Guan Y, Choe H, Li Z, Chung N, Kang YH, Lee MK. Leisingera thetidis sp. nov., isolated from coastal water. Int J Syst Evol Microbiol 2023; 73. [PMID: 37350576 DOI: 10.1099/ijsem.0.005945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023] Open
Abstract
A Gram-strain-negative, strictly aerobic, rod-shaped, catalase-positive, oxidase-positive and pinkish beige colony-forming bacterial strain designated as BMJM1T was isolated from a marine sample collected from coastal water near Tongyeong, Republic of Korea. The results of phylogenetic analysis based on 16S rRNA gene sequences indicated that BMJM1T represents a member of the genus Leisingera as it is closely related to Leisingera daeponensis KCTC 12794T (98.27%), Leisingera caerulea DSM 24564T (97.98%), Leisingera aquaemixtae KCTC 32538T (97.91%), Leisingera methylohalidivorans DSM 14336T (97.26%) and Leisingera aquimarina DSM 24565T (97.25%). Optimal growth occurred at 25-30°C, pH 7.0 and with 2% NaCl. Digital DNA-DNA hybridisation (dDDH) and average nucleotide identity (ANI) values between strain BMJM1T and the closely related species of the genus Leisingera were below 40 and 90%, respectively, which are far below the thresholds to delineate a novel species. The predominant fatty acids (>10%) are summed feature 8 (C18:1ω7c and/or C18:1ω6c) (68.4%) and C14:1iso E (11.6%). The major polar lipids were phosphatidylethanolamine and phospholipid. The major isoprenoid quinone was ubiquinone-10. The DNA G+C content was 64.0%. On the basis of the results of the polyphasic taxonomic characterisation, BMJM1T represents a novel species of the genus Leisingera, for which the name is Leisingera thetidis sp. nov. is proposed, with that type strain BMJM1T (= KCTC 92110T = GDMCC 1.2992T).
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Affiliation(s)
- Min-Ju Kim
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup 56212, Republic of Korea
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Yong Guan
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup 56212, Republic of Korea
| | - Hanna Choe
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup 56212, Republic of Korea
| | - Zhun Li
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup 56212, Republic of Korea
| | - Namhyun Chung
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Yoon-Ho Kang
- Water Environment Research Department, National Institute of Environmental Research, Incheon 22689, Republic of Korea
| | - Mi-Kyung Lee
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup 56212, Republic of Korea
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15
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Ham Y, Cho NC, Kim D, Kim JH, Jo MJ, Jeong MS, Pak BY, Lee S, Lee MK, Chi SW, Kim TD, Jeong NC, Cho S. The SpACE-CCM: A facile and versatile cell culture medium-based biosensor for detection of SARS-CoV-2 spike-ACE2 interaction. Biosens Bioelectron 2023; 227:115169. [PMID: 36827795 PMCID: PMC9938795 DOI: 10.1016/j.bios.2023.115169] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/05/2023] [Accepted: 02/17/2023] [Indexed: 02/21/2023]
Abstract
The COVID-19 pandemic is an ongoing global public health threat. COVID-19 is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, and binding of the SARS-CoV-2 spike to its receptor, angiotensin-converting enzyme 2 (ACE2), on host cells is critical for viral infection. Here, we developed a luminescent biosensor that readily detects interactions of the spike receptor-binding domain (RBD) and ACE2 in cell culture medium ('SpACE-CCM'), which was based on bimolecular complementation of the split nanoluciferase-fused spike RBD and ectodomain of ACE2 and further engineered to be efficiently secreted from cells by adding a heterologous secretory signal peptide (SSP). Screening of various SSPs identified 'interferon-α+alanine-aspartate' as the SSP that induced the highest activity. The SpACE-CCM biosensor was validated by observing a marked reduction of the activity caused by interaction-defective mutations or in the presence of neutralizing antibodies, recombinant decoy proteins, or peptides. Importantly, the SpACE-CCM biosensor responded well in assay-validating conditions compared with conventional cell lysate-based NanoLuc Binary Technology, indicating its advantage. We further demonstrated the biosensor's versatility by quantitatively detecting neutralizing activity in blood samples from COVID-19 patients and vaccinated individuals, discovering a small molecule interfering with the spike RBD-ACE2 interaction through high-throughput screening, and assessing the cross-reactivity of neutralizing antibodies against SARS-CoV-2 variants. Because the SpACE-CCM is a facile and rapid one-step reaction biosensor that aptly recapitulates the native spike-ACE2 interaction, it would be advantageous in many experimental and clinical applications associated with this interaction.
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Affiliation(s)
- Youngwook Ham
- Nucleic Acid Therapeutics Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Chungbuk, 28116, Republic of Korea; Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (KUST), Daejeon, 34113, Republic of Korea
| | - Nam-Chul Cho
- Korea Chemical Bank, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114, Republic of Korea
| | - Daeyong Kim
- Nucleic Acid Therapeutics Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Chungbuk, 28116, Republic of Korea; Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (KUST), Daejeon, 34113, Republic of Korea
| | - Jung-Hee Kim
- AM Science Corp., Gyeonggi, 12902, Republic of Korea
| | - Min Ju Jo
- Nucleic Acid Therapeutics Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Chungbuk, 28116, Republic of Korea; College of Pharmacy, Chungbuk National University, Chungbuk, 28644, Republic of Korea
| | - Min Seon Jeong
- Nucleic Acid Therapeutics Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Chungbuk, 28116, Republic of Korea; Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (KUST), Daejeon, 34113, Republic of Korea
| | - Bo-Yeong Pak
- AM Science Corp., Gyeonggi, 12902, Republic of Korea
| | - Sanghyeok Lee
- AM Science Corp., Gyeonggi, 12902, Republic of Korea
| | - Mi-Kyung Lee
- Disease Target Structure Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea; Critical Diseases Diagnostics Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea; Department of Proteome Structural Biology, KRIBB School of Bioscience, Korea University of Science and Technology (KUST), Daejeon, 34113, Republic of Korea
| | - Seung-Wook Chi
- Disease Target Structure Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea; Department of Proteome Structural Biology, KRIBB School of Bioscience, Korea University of Science and Technology (KUST), Daejeon, 34113, Republic of Korea
| | - Tae-Don Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (KUST), Daejeon, 34113, Republic of Korea
| | | | - Sungchan Cho
- Nucleic Acid Therapeutics Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Chungbuk, 28116, Republic of Korea; Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (KUST), Daejeon, 34113, Republic of Korea.
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16
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Choe KW, Lim YK, Kweon OJ, Lee MK, Chung JW, Kim HR. Prevalence of Anti-PF4 Antibodies After First and Second ChAdOx1 nCoV-19 Vaccinations in Women With Adverse Events: A Brief Report and Literature Review. Ann Lab Med 2023; 43:299-302. [PMID: 36544343 DOI: 10.3343/alm.2023.43.3.299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/16/2022] [Accepted: 11/03/2022] [Indexed: 12/24/2022] Open
Affiliation(s)
- Kye Won Choe
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Yong Kwan Lim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Oh Joo Kweon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jin-Won Chung
- Department of Internal Medicine, Division of Infectious Diseases, Chung-Ang University College of Medicine, Seoul, Korea
| | - Hye Ryoun Kim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
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17
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Lim YK, Kweon OJ, Choi Y, Yoon S, Kim TH, Lee MK. Exploring the vaccine-induced immunity against severe acute respiratory syndrome coronavirus 2 in healthcare workers. Sci Rep 2023; 13:6830. [PMID: 37100845 PMCID: PMC10131514 DOI: 10.1038/s41598-023-33397-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 04/12/2023] [Indexed: 04/28/2023] Open
Abstract
We aimed to analyze the kinetics of T-cell-mediated and B-cell-mediated humoral immune responses against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) before and after booster vaccination, as well as the impacts of the in vitro test results the type of vaccination on the prediction of SARS-CoV-2 infection. A total of 240 healthcare workers vaccinated twice were serially tested using an interferon gamma release assay (IGRA) and a neutralizing antibody (nAb). At the end of the study, we investigated the history of SARS-CoV-2 infection of all the enrolled participants to analyze the effects of the test results and the type of vaccination on SARS-CoV-2 infection. Overall, the positive rates were 52.3% and 80.0% for IGRA and 84.6% and 100% for the nAb test before and after booster vaccination, respectively. However, the positive rates were 52.8% for IGRA and 100% for nAb 3 months after booster vaccination. The in vitro test results and the type of vaccination were not associated with SARS-CoV-2 infection. The antibody response caused by the SARS-CoV-2 vaccination lasted more than 6 months, although the response of the T-cells disappeared rapidly after 3 months. However, these in vitro results and the type of vaccination cannot be used for predicting the risk of SARS-CoV-2 infection.
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Affiliation(s)
- Yong Kwan Lim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea
| | - Oh Joo Kweon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea
| | - Yoojeong Choi
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea
| | - Sumi Yoon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea
| | - Tae-Hyoung Kim
- Department of Urology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea.
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18
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Jeong KB, Ryu M, Kim JS, Kim M, Yoo J, Chung M, Oh S, Jo G, Lee SG, Kim HM, Lee MK, Chi SW. Single-molecule fingerprinting of protein-drug interaction using a funneled biological nanopore. Nat Commun 2023; 14:1461. [PMID: 37015934 PMCID: PMC10073129 DOI: 10.1038/s41467-023-37098-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 03/01/2023] [Indexed: 04/06/2023] Open
Abstract
In drug discovery, efficient screening of protein-drug interactions (PDIs) is hampered by the limitations of current biophysical approaches. Here, we develop a biological nanopore sensor for single-molecule detection of proteins and PDIs using the pore-forming toxin YaxAB. Using this YaxAB nanopore, we demonstrate label-free, single-molecule detection of interactions between the anticancer Bcl-xL protein and small-molecule drugs as well as the Bak-BH3 peptide. The long funnel-shaped structure and nanofluidic characteristics of the YaxAB nanopore enable the electro-osmotic trapping of diverse folded proteins and high-resolution monitoring of PDIs. Distinctive nanopore event distributions observed in the two-dimensional (ΔI/Io-versus-IN) plot illustrate the ability of the YaxAB nanopore to discriminate individual small-molecule drugs bound to Bcl-xL from non-binders. Taken together, our results present the YaxAB nanopore as a robust platform for label-free, ultrasensitive, single-molecule detection of PDIs, opening up a possibility for low-cost, highly efficient drug discovery against diverse drug targets.
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Affiliation(s)
- Ki-Baek Jeong
- Disease Target Structure Research Center, Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
- Critical Diseases Diagnostics Convergence Research Center, KRIBB, Daejeon, 34141, Republic of Korea
| | - Minju Ryu
- Disease Target Structure Research Center, Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
- Department of Proteome Structural Biology, KRIBB School of Bioscience, University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Jin-Sik Kim
- Disease Target Structure Research Center, Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
- Critical Diseases Diagnostics Convergence Research Center, KRIBB, Daejeon, 34141, Republic of Korea
| | - Minsoo Kim
- Department of Physics, Sungkyunkwan University, Suwon, Gyeonggi, 16419, Republic of Korea
| | - Jejoong Yoo
- Department of Physics, Sungkyunkwan University, Suwon, Gyeonggi, 16419, Republic of Korea
| | - Minji Chung
- Disease Target Structure Research Center, Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Sohee Oh
- Disease Target Structure Research Center, Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Gyunghee Jo
- Center for Biomolecular and Cellular Structure, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea
| | - Seong-Gyu Lee
- Center for Biomolecular and Cellular Structure, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea
| | - Ho Min Kim
- Center for Biomolecular and Cellular Structure, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Mi-Kyung Lee
- Disease Target Structure Research Center, Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea.
- Critical Diseases Diagnostics Convergence Research Center, KRIBB, Daejeon, 34141, Republic of Korea.
- Department of Proteome Structural Biology, KRIBB School of Bioscience, University of Science and Technology, Daejeon, 34113, Republic of Korea.
| | - Seung-Wook Chi
- Disease Target Structure Research Center, Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea.
- Department of Proteome Structural Biology, KRIBB School of Bioscience, University of Science and Technology, Daejeon, 34113, Republic of Korea.
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi, 16419, Republic of Korea.
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19
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Jiang Y, Guan Y, Kang S, Lee MK, Kim KH, Li Z. Dasania phycosphaerae sp. nov., isolated from phytoplankton sample from the south coast of the Republic of Korea. Int J Syst Evol Microbiol 2023; 73. [PMID: 37185061 DOI: 10.1099/ijsem.0.005768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023] Open
Abstract
A novel bacterial strain, designated as GY-18T, was isolated from particulate material sampled from the Korean south coast. The bacterium was Gram-stain-negative, aerobic and rod-shaped. Oxidase and catalase were positive. Optimal growth was observed at 30 °C, pH 7.0, in the presence of 1 % (w/v) NaCl. Phylogenetic analyses based on 16S rRNA gene and whole-genome sequences suggested that strain GY-18T was a member of the genus
Dasania
, but represented a separate lineage. The 16S rRNA gene sequence of strain GY-18T showed high similarities to
Dasania marina
KCTC 12566T (98.4 %),
Halioglobus japonicus
KCTC 23429T (92.2 %),
Marimicrobium arenosum
KCTC 42300T (92.4 %) and
Seongchinamella unica
KCTC 62383T (92.2 %), respectively. The genome length of strain GY-18T was 3 808 450 bp with a DNA G+C content of 47.8 mol %. The major cellular fatty acids of strain GY-18T were summed feature 3 (comprising C16 : 1
ω7c and/or C16 : 1
ω6c), C16 : 0 and C10 : 0 3-OH (>10 %). Diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and phospholipids were shown to be the major polar lipids. The predominant isoprenoid quinone was Q-8. Based on phylogenetic, phenotypic, chemotaxonomic and genomic features, we propose that strain GY-18T represents a novel species in the genus
Dasania
of the family
Spongiibacteraceae
, with the proposed name Dasania phycosphaerae sp. nov. The type strain is GY-18T (=KCTC 92290T=GDMCC 1.3586T).
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Affiliation(s)
- Yue Jiang
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
- Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Yong Guan
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
- Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Sungmo Kang
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
| | - Mi-Kyung Lee
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
- Department of Environmental Biotechnology, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Ki-Hyun Kim
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
| | - Zhun Li
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
- Department of Environmental Biotechnology, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
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20
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Oh BS, Ryu SW, Yu SY, Bak JE, Choi WJ, Kim JS, Lee JS, Park SH, Kang SW, Lee J, Lee MK, Jung WY, Kim JE, Choi YH, Kim HB, Kim JK, Lee JH, Lee JH. Collinsella urealyticum sp. nov., a urease-positive bacterial strain isolated from swine faeces. Arch Microbiol 2023; 205:156. [PMID: 37004685 DOI: 10.1007/s00203-023-03510-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/21/2023] [Accepted: 03/22/2023] [Indexed: 04/04/2023]
Abstract
A novel actinobacterial strain, designated AGMB00827T, was isolated from swine faeces. Strain AGMB00827T was obligately anaerobic, Gram-stain-positive, non-motile, non-spore-forming and rod-shaped bacterium. Comparative analyses based on the 16S rRNA gene and whole genome sequence revealed that strain AGMB00827T was affiliated to the genus Collinsella, and was most closely related to Collinsella vaginalis Marseille-P2666T (= KCTC 25056T). Biochemical analysis showed strain AGMB00827T was negative for catalase and oxidase. Interestingly, strain AGMB00827T possessed urease activity, which was determined by traditional methods (API test and Christensen's urea medium), unlike related strains. Furthermore, the major cellular fatty acids (> 10%) of the isolate were C18:1 ω9c, C16:0, C16:0 DMA and C18:2 ω9,12c DMA. Based on the whole genome sequence analysis, the DNA G + C content of strain AGMB00827T was 52.3%, and the genome size and numbers of rRNA and tRNA genes were 1,945,251 bp, 3 and 46, respectively. The average nucleotide identity and digital DNA-DNA hybridization values between strain AGMB00827T and C. vaginalis KCTC 25056 T were 71.0 and 23.2%, respectively. Additionally, the genome analysis revealed that strain AGMB00827T possesses urease gene cluster including ureABC and ureDEFG while the related strains do not have those genes, which is consistent with the urease activity. On the basis of polyphasic taxonomic approach, strain AGMB00827T represents a novel species within the genus Collinsella, for which the name Collinsella urealyticum sp. nov. is proposed. The type strain is AGMB00827T (= KCTC 25287T = GDMCC 1.2724T).
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Affiliation(s)
- Byeong Seob Oh
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Seoung Woo Ryu
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Seung Yeob Yu
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Jeong Eun Bak
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Won Jung Choi
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Ji-Sun Kim
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Jung-Sook Lee
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
- University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
| | - Seung-Hwan Park
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Se Won Kang
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Jiyoung Lee
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
- University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
| | - Mi-Kyung Lee
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
- University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
| | - Won Yong Jung
- Korean Bioinformation Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
| | - Jo Eun Kim
- National Institute of Animal Science, Cheonan, 31000, Republic of Korea
| | - Yo Han Choi
- National Institute of Animal Science, Cheonan, 31000, Republic of Korea
| | - Hyeun Bum Kim
- Department of Animal Resources Science, Dankook University, Cheonan, 31116, Republic of Korea
| | - Jae-Kyung Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, 56212, Republic of Korea
| | - Ju-Hoon Lee
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ju Huck Lee
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea.
- University of Science and Technology (UST), Daejeon, 34113, Republic of Korea.
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21
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Kweon OJ, Bae JY, Lim YK, Choi Y, Lee S, Park MS, Suh IB, Kim H, Jee YS, Lee MK. Performance evaluation of newly developed surrogate virus neutralization tests for detecting neutralizing antibodies against SARS-CoV-2. Sci Rep 2023; 13:4961. [PMID: 36973368 PMCID: PMC10041486 DOI: 10.1038/s41598-023-31114-9] [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: 11/22/2022] [Accepted: 03/07/2023] [Indexed: 03/29/2023] Open
Abstract
We evaluated newly developed surrogate virus neutralization tests (sVNT) for detecting neutralizing antibodies (NAbs) against the receptor binding domain of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). VERI-Q SARS-CoV-2 Neutralizing Antibody Detection ELISA Kit (MiCo BioMed, Gyeonggi-do, Republic of Korea, hereafter, "eCoV-CN") is an enzyme-linked immunosorbent assay-based sVNT, and VERI-Q SARS-CoV-2 Neutralizing Antibody Rapid Test Kit (MiCo BioMed, hereafter, "rCoV-RN") is a point-of-care lateral-flow immunochromatography test with auto-scanner. A total of 411 serum samples were evaluated. Both evaluations used a 50% plaque reduction neutralization test (PRNT50) as the gold standard. Compared with PRNT50, the eCoV-CN showed 98.7% positive percent agreement (PPA), 96.8% negative percent agreement (NPA), 97.4% total percent agreement (TPA), with kappa values of 0.942. The rCoV-RN showed 98.7% PPA, 97.4% NPA, 97.8% TPA, and kappa values of 0.951, comparing to PRNT50. Neither assay indicated cross-reactivity for other pathogens, and the signal indexes were statistically significantly correlated to the PRNT50 titer. The two evaluated sVNTs show comparable performances to the PRNT50 with the advantages of technical simplicity, speed, and do not require cell culture facilities.
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Affiliation(s)
- Oh Joo Kweon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Joon-Yong Bae
- Department of Microbiology, Institute for Viral Diseases, Vaccine Innovation Center, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Yong Kwan Lim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Yoojeong Choi
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Sohyun Lee
- Department of Microbiology, Institute for Viral Diseases, Vaccine Innovation Center, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Man-Seong Park
- Department of Microbiology, Institute for Viral Diseases, Vaccine Innovation Center, College of Medicine, Korea University, Seoul, Republic of Korea
| | - In Bum Suh
- Department of Laboratory Medicine, College of Medicine, Kangwon National University, Chuncheon-si, Republic of Korea
| | - Hana Kim
- Department of Laboratory Medicine, College of Medicine, Kangwon National University, Chuncheon-si, Republic of Korea
| | - Young Sam Jee
- Department of Laboratory Medicine, College of Medicine, Kangwon National University, Chuncheon-si, Republic of Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea.
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22
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Guan Y, Li Z, Kang YH, Lee MK. Isolation, Characterization and WholeGenome Analysis of Paenibacillus andongensis sp.nov. from Korean Soil. J Microbiol Biotechnol 2023; 33:1-7. [PMID: 37072682 DOI: 10.4014/jmb.2211.11033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/16/2023] [Accepted: 02/15/2023] [Indexed: 04/20/2023]
Abstract
The genus Paenibacillus contains a variety of biologically active compounds that have potential applications in a range of fields, including medicine, agriculture, and livestock, playing an important role in the health and economy of society. Our study focused on the bacterium SS4T (KCTC 43402T = GDMCC 1.3498T ), which was characterized using a polyphasic taxonomic approach. This strain was analyzed using antiSMASH, BAGEL4, and PRISM to predict the secondary metabolites. Lassopeptide clusters were found using all three analysis methods, with the possibility of secretion. Additionally, PRISM found three biosynthetic gene clusters (BGC) and predicted the structure of the product. Genome analysis indicated that glucoamylase is present in SS4T . 16S rRNA sequence analysis showed that strain SS4T most closely resembled Paenibacillus marchantiophytorum DSM 29850T (98.22%), Paenibacillus nebraskensis JJ-59T (98.19%), and Paenibacillus aceris KCTC 13870T (98.08%). Analysis of the 16S rRNA gene sequences and Type Strain Genome Server (TYGS) analysis revealed that SS4T belongs to the genus Paenibacillus based on the results of the phylogenetic analysis. As a result of the matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry (MALDI-TOF/MS) results, SS4T was determined to belong to the genus Paenibacillus. Comparing P. marchantiophytorum DSM 29850T with average nucleotide identity (ANI 78.97%) and digital DNADNA hybridization (dDDH 23%) revealed values that were all less than the threshold for bacterial species differentiation. The results of this study suggest that strain SS4T can be classified as a Paenibacillus andongensis species and is a novel member of the genus Paenibacillus.
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Affiliation(s)
- Yong Guan
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
- Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Zhun Li
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
- Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
| | - Yoon-Ho Kang
- Water Environment Research Department, National Institute of Environmental Research, Incheon 22689, Republic of Korea
| | - Mi-Kyung Lee
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
- Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
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23
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Lim YK, Kweon OJ, Choi Y, Kim TH, Lee MK. Evaluation of ichroma™ COVID-19 interferon gamma release assay for detection of vaccine-induced immunity in healthcare workers. Clin Chem Lab Med 2023; 61:503-509. [PMID: 36476381 DOI: 10.1515/cclm-2022-0914] [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: 09/14/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022]
Abstract
OBJECTIVES We compared the performance of a new interferon gamma release assay (IGRA) format assay, the ichroma™ COVID-19 IGRA (IGRA-SARS), with that of the widely used QuantiFERON SARS-CoV-2 ELISA kit (QFN-SARS) in vaccinated healthcare workers (HCWs). Additionally, we analyzed the long-term changes in IGRA results after the final vaccine dose. METHODS A total of 383 specimens from 281 HCWs were enrolled in this study, and the results of SARS-IGRA and QFN-SARS assays were compared. In addition, we performed the receive operator curve analysis to estimate the optimal cut-off value for IGRA-SARS. RESULTS For all specimens, IGRA-SARS and QFN-SARS showed 75.7% and 64.2% of the positive results, respectively. The absolute agreement between IGRA-SARS and QFN-SARS was 80.0%, and the Fleiss' κ value was 0.525, indicating moderate agreement. ROC curve analysis of the IGRA-SARS results showed a cut-off value of >0.254 IU/mL, which was consistent with the manufacturer's specifications. The positive rates of both IGRA assays decreased significantly after a postvaccination period of 6 months. CONCLUSIONS IGRA-SARS showed acceptable performance in the detection of vaccine-induced immunity against COVID-19; however, harmonization of IGRA assays has not yet been achieved. Additionally, the significant decline of positive rates of IGRA after the last vaccination would support the necessity of booster vaccination after a postvaccination period of 6 months.
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Affiliation(s)
- Yong Kwan Lim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Oh Joo Kweon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Yoojeong Choi
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Tae-Hyoung Kim
- Department of Urology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, South Korea
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24
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Bak JE, Oh BS, Ryu SW, Yu SY, Choi WJ, Kim JS, Lee JS, Park SH, Kang SW, Lee J, Lee MK, Yun CS, Jung WY, Kim JE, Cho ES, Kim HB, Kim JK, Lee JH, Lee JH. Parabacteroides faecalis sp. nov. Isolated from Swine Faeces. Curr Microbiol 2023; 80:91. [PMID: 36725751 DOI: 10.1007/s00284-023-03190-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 01/13/2023] [Indexed: 02/03/2023]
Abstract
A Gram-negative, obligate anaerobic, non-motile, non-spore-forming, rod-shaped bacterial strain designated AGMB00274T was isolated from swine faeces. An 16S rRNA gene analysis indicated that strain AGMB00274T belonged to the genus Parabacteroides, with the highest similarity to Parabacteroides johnsonii (P. johnsonii) DSM 18315T (sequence similarity of 94.9%). The genome size of strain AGMB00274T was 4,308,683 bp, with a DNA G+C content of 42.5 mol%. The biochemical analysis of strain AGMB00274T showed that it was positive for gelatin hydrolysis and α-fucosidase, but negative for the acid production from D-glucose, D-mannitol, D-maltose, salicin, glycerol, D-cellobiose, D-mannose, D-melezitose, D-sorbitol, D-trehalose, and negative for α-arabinosidase, glutamic acid decarboxylase, and pyroglutamic acid arylamidase. The dominant cellular fatty acids (> 10%) of the isolate were anteiso-C15: 0 (23.2%), iso-C15: 0 (16.6%), C18: 1 ω9c (16.4%), summed feature 11 (iso-C17: 0 3-OH and/or C18: 2 DMA) (12.5%), and C16: 0 (11.3%). The major respiratory quinones of strain AGMB00274T were MK-9 (55.4%) and MK-10 (44.6%). The major polar lipid was phosphatidylethanolamine. Based on phylogenetic, genetic, physiological, and chemotaxonomic analyses, as a novel species of the genus Parabacteroides, strain AGMB00274T was proposed with the name Parabacteroides faecalis sp. nov. The type strain used was AGMB00274T (= KCTC 25286T = GDMCC 1.2742T).
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Affiliation(s)
- Jeong Eun Bak
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Byeong Seob Oh
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Seoung Woo Ryu
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Seung Yeob Yu
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Won Jung Choi
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Ji-Sun Kim
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Jung-Sook Lee
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Seung-Hwan Park
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Se Won Kang
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Jiyoung Lee
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Mi-Kyung Lee
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Chan Seok Yun
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Won Yong Jung
- Korean Bioinformation Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
| | - Jo Eun Kim
- National Institute of Animal Science, Cheonan, 31000, Republic of Korea
| | - Eun Seok Cho
- National Institute of Animal Science, Cheonan, 31000, Republic of Korea
| | - Hyeun Bum Kim
- Department of Animal Resources Science, Dankook University, Cheonan, 31116, Republic of Korea
| | - Jae-Kyung Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, 56212, Republic of Korea
| | - Ju-Hoon Lee
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ju Huck Lee
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea.
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25
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Choi JY, Cho G, Park JE, Choi SH, Kim JS, Lee J, Lee MK, Lee JS, Lee JH, Kim HB, Lee JH, Kim JK, Kang SW, Park SH. Caproiciproducens faecalis sp. nov., Isolated from Cow Faeces. Curr Microbiol 2023; 80:65. [PMID: 36602627 DOI: 10.1007/s00284-022-03169-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 12/15/2022] [Indexed: 01/06/2023]
Abstract
The bacterial strain AGMB10547T was isolated from cow faeces deposited by the National Institute of Animal Science in Cheonan, Republic of Korea. The strain AGMB10547T possessed the phenotypic, biochemical and chemotaxonomic characteristics of the bacteria of the family Oscillospiraceae. The isolate was obligately anaerobic, non-motile, Gram-positive and rod-shaped bacteria. The growth of strain AGMB10547T occurred within 35-40 °C (optimum at 37 °C), at pH 6-7 (optimum of 7) and in the presence of 0.5-2.0% (w/v) NaCl. Based on 16S rRNA gene sequence similarity, strain AGMB10547T belonged to the genus Caproiciproducens and was most closely related to Caproiciproducens galactitolivorans BS-1T (96.9%). The DNA G+C content was 49.0 mol%. The major cellular fatty acids (> 10%) of the isolate were C14:0, C14:0 DMA, C16:1 ω9c and C16:0. The average nucleotide identity (ANI) and digital DNA-DNA Hybridization (dDDH) values between strain AGMB10547T and C. galactitolivorans BS-1T were 75.5% and 19.2%. Based on the phenotypic, genotypic, biochemical and chemotaxonomic analyses, strain AGMB10547T represents a novel species of the genus Caproiciproducens, for which the name Caproiciproducens faecalis sp. nov. is proposed. The type strain AGMB10547T (=KCTC 25200T=NBRC 115006T=GDMCC 1.2575T).
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Affiliation(s)
- Ji Young Choi
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
| | - Gyeongbin Cho
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
- Department of Biology, College of Natural Sciences, Soonchunhyang University, Asan, Chungnam, 31538, Republic of Korea
| | - Jam-Eon Park
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
| | - Seung-Hyeon Choi
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
| | - Ji-Sun Kim
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
| | - Jiyoung Lee
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
| | - Mi-Kyung Lee
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
| | - Jung-Sook Lee
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
| | - Ju Huck Lee
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
| | - Hyeun Bum Kim
- Department of Animal Resources Science, Dankook University, Cheonan, 31116, Republic of Korea
| | - Ju-Hoon Lee
- Department of Food Science and Animal Biotechnology, Seoul National University, Seoul, Republic of Korea
- Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Jae-Kyung Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, 56212, Republic of Korea
| | - Se Won Kang
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea.
| | - Seung-Hwan Park
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea.
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26
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Park DH, Goo SY, Hong SH, Min JH, Byeon JY, Lee MK, Lee HD, Ahn BW, Kimm H, Jee SH, Lee DH, Lee YH, Kang ES, Jeon JY. Prognostic value of resting heart rate in predicting undiagnosed diabetes in adults: Korean National Health and Nutrition Examination Survey 2008-2018. Nutr Metab Cardiovasc Dis 2023; 33:141-150. [PMID: 37074077 DOI: 10.1016/j.numecd.2022.09.012] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 09/16/2022] [Accepted: 09/21/2022] [Indexed: 10/14/2022]
Abstract
BACKGROUND AND AIM Although resting heart rate (RHR) is associated with prevalence and incidence of diabetes, whether it is associated with undiagnosed diabetes is still unclear. We aimed to investigate whether the RHR is associated with the prevalence of undiagnosed diabetes in a large Korean national dataset. METHODS AND RESULTS The Korean National Health and Nutrition Examination Survey data from 2008 to 2018 were used. After screening, 51,637 participants were included in this study. The odds ratios and 95% confidence intervals (CIs) for undiagnosed diabetes were calculated using multivariable-adjusted logistic regression analyses. Analyses showed that participants with a RHR of ≥90 bpm showed a 4.00- (95% CI: 2.77-5.77) and 3.21-times (95% CI: 2.01-5.14) higher prevalence of undiagnosed diabetes for men and women, respectively, than those with a RHR of <60 bpm. The linear dose-response analyses showed that each 10-bpm increment in RHR was associated with a 1.39- (95% CI: 1.32-1.48) and 1.28-times (95% CI: 1.19-1.37) higher prevalence of undiagnosed diabetes for men and women, respectively. In the stratified analyses, the positive association between RHR and the prevalence of undiagnosed diabetes was tended to be stronger among those who were younger (age: <40 years) and lean (BMI: <23 kg/m2). CONCLUSIONS Elevated RHR was significantly associated with a higher prevalence of undiagnosed diabetes in Korean men and women, independent of demographic, lifestyle, and medical factors. Accordingly, the value of RHR as a clinical indicator and health marker, especially in reducing the prevalence of undiagnosed diabetes, is suggestible.
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Affiliation(s)
- Dong-Hyuk Park
- Department of Sport Industry Studies, Yonsei University, Seoul, South Korea; Exercise Medicine Center for Diabetes and Cancer Patients, ICONS, Yonsei University, Seoul, South Korea
| | - Seon Young Goo
- Department of Sport Industry Studies, Yonsei University, Seoul, South Korea
| | - Sung Hyun Hong
- Department of Sport Industry Studies, Yonsei University, Seoul, South Korea
| | - Ji-Hee Min
- Department of Convergence Medicine, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - Ji Yong Byeon
- Department of Sport Industry Studies, Yonsei University, Seoul, South Korea
| | - Mi-Kyung Lee
- Department of Sport Industry Studies, Yonsei University, Seoul, South Korea; Frontier Research Institute of Convergence Sports Science, FRICSS, Yonsei University, Seoul, South Korea
| | - Hae Dong Lee
- Frontier Research Institute of Convergence Sports Science, FRICSS, Yonsei University, Seoul, South Korea; Department of Physical Education, Yonsei University, Seoul, South Korea
| | - Byoung Wook Ahn
- Leisure Marine Sports, Hanseo University, Chungcheongnam-do, South Korea
| | - Heejin Kimm
- Graduate School of Public Health, Institute for Health Promotion, Yonsei University, Seoul, South Korea
| | - Sun Ha Jee
- Graduate School of Public Health, Institute for Health Promotion, Yonsei University, Seoul, South Korea
| | - Dong Hoon Lee
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Yong-Ho Lee
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - Eun Seok Kang
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - Justin Y Jeon
- Department of Sport Industry Studies, Yonsei University, Seoul, South Korea; Exercise Medicine Center for Diabetes and Cancer Patients, ICONS, Yonsei University, Seoul, South Korea; Frontier Research Institute of Convergence Sports Science, FRICSS, Yonsei University, Seoul, South Korea.
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Yoon S, Lim YK, Kim HR, Lee MK, Kweon OJ. Establishment of Reference Intervals of Cytokeratin 19 Fragment Antigen 21-1 in Korean Adults. Ann Lab Med 2023; 43:82-85. [PMID: 36045060 PMCID: PMC9467843 DOI: 10.3343/alm.2023.43.1.82] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 03/29/2022] [Revised: 04/28/2022] [Accepted: 08/03/2022] [Indexed: 12/27/2022] Open
Abstract
Cytokeratin 19 fragment antigen 21-1 (CYFRA 21-1) is useful for predicting and monitoring non-small cell lung cancer prognosis. We established reference intervals (RIs) of CYFRA 21-1 in Korean adults, including those older than 60 years. Data of 4,098 apparently healthy subjects (age range, 20-87 years) were analyzed after excluding those with a history of malignancy, high tumor marker concentrations (except CYFRA 21-1), and/or abnormal findings on a chest computed tomography scan through medical chart review. After removing two outliers, RIs of CYFRA 21-1 were determined using data of 4,096 subjects based on the non-parametric method (2.5th and 97.5th percentiles) according to CLSI guidelines EP28-A3c. The subjects were divided into two and four groups according to sex and age (20-40, 41-50, 51-60, and >60 years), respectively, and the median CYFRA 21-1 concentration was compared between the groups. The RI of CYFRA 21-1 was 0.66-3.84 ng/mL, applicable to both men and women. Regardless of sex, the CYFRA 21-1 concentration increased with age, suggesting that age-dependent RIs of CYFRA 21-1 should be applied. Rather than using a single RI provided by the manufacturer, the RI of CYFRA 21-1 should be continually verified and established in each clinical laboratory.
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Affiliation(s)
- Sumi Yoon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Yong Kwan Lim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Hye Ryoun Kim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Oh Joo Kweon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
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Yoon S, Choi YJ, Lim YK, Kweon OJ, Kim HR, Kim TH, Lee MK. Prevalence and detection of Tropheryma whipplei in the stools of Korean patients with diarrhea using real-time PCRs. Ann Clin Microbiol Antimicrob 2022; 21:55. [PMID: 36474214 PMCID: PMC9724275 DOI: 10.1186/s12941-022-00543-1] [Citation(s) in RCA: 2] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 11/18/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The prevalence of Tropheryma whipplei varies depending on age, region, and underlying disease. We estimated the prevalence of T. whipplei in the stools of Korean patients with diarrhea using real-time PCR (RT-PCR) and compared three RT-PCR targets, rpoB, hsp65, and Dig15. METHODS A total of 1404 nucleic acid samples extracted from the stools of Korean patients with diarrhea were tested using an initial RT-PCR targeting T. whipplei-specific regions of 16S-23S rRNA intergenic spacer. Subsequently, the samples positive for the initial RT-PCR were tested using the follow-up RT-PCRs targeting rpoB, hsp65, and Dig15 and analyzed by sequencing to confirm the presence of T. whipplei. We estimated the prevalence of T. whipplei and compared them according to gender and age. We also compared the performance of three targets in the follow-up RT-PCRs. RESULTS T. whipplei was detected in 1.4% of all samples (20 of 1404), and there were no differences according to gender and age. In pediatric samples (≤ 19 years), T. whipplei was detected higher in children aged 6-19 than in those aged 1-5 (2.7% vs. 0.7%, P = 0.01). Sensitivities of the rpoB, hsp65, and Dig15 RT-PCR were 50.0%, 85.0%, and 95.0%, respectively; specificities were 100.0%, 100.0%, and 84.6%, respectively. CONCLUSIONS This is the first study that estimated the prevalence of T. whipplei in the stools of Korean patients with diarrhea. This study demonstrated the presence of T. whipplei in stools of Koreans, even though the bacterium was detected low. The RT-PCRs targeting hsp65 and Dig15 showed reliable performance, and a multiplex PCR including these targets is expected to be useful for T. whipplei detection.
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Affiliation(s)
- Sumi Yoon
- grid.254224.70000 0001 0789 9563Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Yoo Jeong Choi
- grid.254224.70000 0001 0789 9563Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Yong Kwan Lim
- grid.254224.70000 0001 0789 9563Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Oh Joo Kweon
- grid.254224.70000 0001 0789 9563Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Hye Ryoun Kim
- grid.254224.70000 0001 0789 9563Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Tae-Hyoung Kim
- grid.254224.70000 0001 0789 9563Department of Urology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Mi-Kyung Lee
- grid.254224.70000 0001 0789 9563Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
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Joung Y, Kim K, Lee S, Chun BS, Lee S, Hwang J, Choi S, Kang T, Lee MK, Chen L, Choo J. Rapid and Accurate On-Site Immunodiagnostics of Highly Contagious Severe Acute Respiratory Syndrome Coronavirus 2 Using Portable Surface-Enhanced Raman Scattering-Lateral Flow Assay Reader. ACS Sens 2022; 7:3470-3480. [PMID: 36374202 DOI: 10.1021/acssensors.2c01808] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In early 2022, the number of people infected with the highly contagious mutant severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), called Omicron, was increasing worldwide. Therefore, several countries approved the lateral flow assay (LFA) strip as a diagnostic method for confirming SARS-CoV-2 instead of reverse transcription-polymerase chain reaction (RT-PCR), which takes a long time to generate the results. However, owing to the limitation of detection sensitivity, commercial LFA strips have high false-negative diagnosis rates for patients with low virus concentrations. Therefore, in this study, we developed a portable surface-enhanced Raman scattering (SERS)-LFA reader based on localized surface plasmon effects to solve the sensitivity problem of the commercial LFA strip. We tested 54 clinical samples using this portable SERS-LFA reader, which generated 49 positive and 5 negative results. Out of the 49 positive results, SERS-LFA classified only 2 as false negative, while the commercial LFA classified 21 as false negative. This confirmed that the false-negative rate had significantly improved compared to that of commercial LFA strips. We believe that the proposed SERS-LFA system can be utilized as a point-of-care diagnostic system to quickly and accurately determine a virus infection that could spread significantly within a short period.
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Affiliation(s)
- Younju Joung
- Department of Chemistry, Chung-Ang University, Seoul 06974, South Korea
| | - Kihyun Kim
- Department of Chemistry, Chung-Ang University, Seoul 06974, South Korea
| | - Seungwoo Lee
- Nanoscope Systems Inc., Daejeon 34016, South Korea
| | | | - Sangyeop Lee
- Department of Innovative Diagnostics, SG Medical Inc., Seoul 05548, South Korea
| | - Joonki Hwang
- Department of Innovative Diagnostics, SG Medical Inc., Seoul 05548, South Korea
| | - Suji Choi
- Department of Innovative Diagnostics, SG Medical Inc., Seoul 05548, South Korea
| | - Taejoon Kang
- Bionanotechnology, Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, South Korea.,School of Pharmacy, Sungkyunkwan University, Suwon 16419, South Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, College of Medicine, Chung-Ang University, Seoul 06973, South Korea
| | - Lingxin Chen
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Jaebum Choo
- Department of Chemistry, Chung-Ang University, Seoul 06974, South Korea
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Abstract
Antigen rapid diagnostic tests (RDTs) became the most important tool for the diagnosis of the coronavirus disease 2019 (COVID-19), however there have been very few evaluations of the accuracy of the RDTs in actual use. In this study, we investigated the performance accuracy of the RDT, the STANDARD Q COVID-19 Ag (STANDARD Q), in the Republic of Korea. We collected a total of 5,792 results that underwent both RDT and reverse transcription polymerase chain reaction simultaneously, and overall sensitivity and specificity of the STANDARD Q were 57.6% and 99.9%, respectively. With binomial logistic regression analysis, we estimated that about half of the COVID-19 patients with a cycle threshold value of 25 for E and RdRP were RDT-negative. These results suggest that the clinical sensitivity of RDTs against severe acute respiratory syndrome coronavirus 2 is considerably low in a real-world setting, and we recommend that limitations of RDTs should be considered when setting up COVID-19 test strategies.
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Affiliation(s)
- Oh Joo Kweon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Hye Ryoun Kim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Yong Kwan Lim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea.
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Kocsis B, Lee MK, Yu JH, Nagy T, Daróczi L, Batta G, Pócsi I, Leiter É. Functional analysis of the bZIP-type transcription factors AtfA and AtfB in Aspergillus nidulans. Front Microbiol 2022; 13:1003709. [PMID: 36204617 PMCID: PMC9530789 DOI: 10.3389/fmicb.2022.1003709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
Transcription factors (TFs) with the basic leucin zipper domain are key elements of the stress response pathways in filamentous fungi. In this study, we functionally characterized the two bZIP type TFs AtfA and AtfB by deletion (Δ) and overexpression (OE) of their encoding genes in all combination: ΔatfA, ΔatfB, ΔatfAΔatfB, ΔatfAatfBOE, ΔatfBatfAOE, atfAOE, atfBOE and atfAOEatfBOE in Aspergillus nidulans. Based on our previous studies, ΔatfA increased the sensitivity of the fungus to oxidative stress mediated by menadione sodium bisulfite (MSB) and tert-butylhydroperoxide (tBOOH), while ΔatfB was not sensitive to any oxidative stress generating agents, namely MSB, tBOOH and diamide at all. Contrarily, the ΔatfB mutant was sensitive to NaCl, but tolerant to sorbitol. Overexpression of atfB was able to compensate the MSB sensitivity of the ΔatfA mutant. Heavy metal stress elicited by CdCl2 reduced diameter of the atfBOE and atfAOEatfBOE mutant colonies to about 50% of control colony, while the cell wall stress generating agent CongoRed increased the tolerance of the ΔatfA mutant. When we tested the heat stress sensitivity of the asexual spores (conidiospores) of the mutants, we found that conidiospores of ΔatfAatfBOE and ΔatfBatfAOE showed nearly 100% tolerance to heat stress. Asexual development was negatively affected by ΔatfA, while atfAOE and atfAOE coupled with ΔatfB increased the number of conidiospores of the fungus approximately 150% compared to the control. Overexpression of atfB led to a 25% reduction in the number of conidiospores, but increased levels of abaA mRNA and size of conidiospores. Sexual fruiting body (cleistothecium) formation was diminished in the ΔatfA and the ΔatfAΔatfB mutants, while relatively elevated in the ΔatfB and the ΔatfBatfAOE mutants. Production of the mycotoxin sterigmatocystin (ST) was decreased to undetectable levels in the ΔatfA mutant, yet ST production was restored in the ΔatfAΔatfB mutant, suggesting that ΔatfB can suppress ST production defect caused by ΔatfA. Levels of ST were also significantly decreased in the ΔatfAatfBOE, ΔatfBatfAOE and atfAOEatfBOE mutants.
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Affiliation(s)
- Beatrix Kocsis
- Department of Molecular Biotechnology and Microbiology, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
- ELRN-UD Fungal Stress Biology Research Group, Debrecen, Hungary
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, Hungary
| | - Mi-Kyung Lee
- Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup-si, South Korea
| | - Jae-Hyuk Yu
- Department of Bacteriology, Food Research Institute, University of Wisconsin, Madison, WI, United States
- Department of Systems Biotechnology, Konkuk University, Seoul, South Korea
| | - Tibor Nagy
- Department of Applied Chemistry, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - Lajos Daróczi
- Department of Solid State Physics, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - Gyula Batta
- Department of Genetics and Applied Microbiology, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - István Pócsi
- Department of Molecular Biotechnology and Microbiology, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
- ELRN-UD Fungal Stress Biology Research Group, Debrecen, Hungary
| | - Éva Leiter
- Department of Molecular Biotechnology and Microbiology, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
- ELRN-UD Fungal Stress Biology Research Group, Debrecen, Hungary
- *Correspondence: Éva Leiter,
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Jeong KB, Kim JS, Dhanasekar NN, Lee MK, Chi SW. Application of nanopore sensors for biomolecular interactions and drug discovery. Chem Asian J 2022; 17:e202200679. [PMID: 35929410 DOI: 10.1002/asia.202200679] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 06/30/2022] [Revised: 08/04/2022] [Indexed: 11/07/2022]
Abstract
Biomolecular interactions, including protein-protein, protein-nucleic acid, and protein/nucleic acid-ligand interactions, play crucial roles in various cellular signaling and biological processes, and offer attractive therapeutic targets in numerous human diseases. Currently, drug discovery is limited by the low efficiency and high cost of conventional ensemble-averaging-based techniques for biomolecular interaction analysis and high-throughput drug screening. Nanopores are an emerging technology for single-molecule sensing of biomolecules. Owing to the robust advantages of single-molecule sensing, nanopore sensors have contributed tremendously to nucleic acid sequencing and disease diagnostics. In this minireview, we summarize the recent developments and outlooks in single-molecule sensing of various biomolecular interactions for drug discovery applications using biological and solid-state nanopore sensors.
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Affiliation(s)
- Ki-Baek Jeong
- Disease Target Structure Research Center, Division of Biomedical Research, KRIBB, 34141, Daejeon, Republic of Korea
- Critical Diseases Diagnostics Convergence Research Center, KRIBB, 34141, Daejeon, Republic of Korea
| | - Jin-Sik Kim
- Disease Target Structure Research Center, Division of Biomedical Research, KRIBB, 34141, Daejeon, Republic of Korea
- Critical Diseases Diagnostics Convergence Research Center, KRIBB, 34141, Daejeon, Republic of Korea
| | - Naresh Niranjan Dhanasekar
- Disease Target Structure Research Center, Division of Biomedical Research, KRIBB, 34141, Daejeon, Republic of Korea
| | - Mi-Kyung Lee
- Disease Target Structure Research Center, Division of Biomedical Research, KRIBB, 34141, Daejeon, Republic of Korea
- Critical Diseases Diagnostics Convergence Research Center, KRIBB, 34141, Daejeon, Republic of Korea
- Department of Proteome Structural Biology, KRIBB School of Bioscience, University of Science and Technology, 34113, Daejeon, Republic of Korea
| | - Seung-Wook Chi
- Disease Target Structure Research Center, Division of Biomedical Research, KRIBB, 34141, Daejeon, Republic of Korea
- Department of Proteome Structural Biology, KRIBB School of Bioscience, University of Science and Technology, 34113, Daejeon, Republic of Korea
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Lee MK, Kim KN, Jeong MA, Kim SY, Oh MS, Kwon BS. Facemask ventilation and vocal cord angle following neuromuscular blockade: a prospective observational study . Anaesthesia 2022; 77:1010-1017. [PMID: 35727620 DOI: 10.1111/anae.15786] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2022] [Indexed: 11/29/2022]
Abstract
Numerous studies support the idea that neuromuscular blockade facilitates facemask ventilation after induction of anaesthesia. Although improved airway patency or pulmonary compliance and a resolution of laryngospasm have been suggested as possible causes, the exact mechanism remains unclear. We aimed to assess whether neuromuscular blockade improves facemask ventilation and to clarify whether this phenomenon is associated with the vocal cord angle. This prospective observational study included patients aged between 20 and 65 years scheduled for elective surgery under general anaesthesia. After induction of anaesthesia, patients' lungs were ventilated with pressure-controlled ventilation using a facemask. During facemask ventilation, a flexible bronchoscope was inserted through a self-sealing diaphragm at the elbow connector attached to the facemask and breathing circuit and positioned to allow a continuous view of the vocal cords. The mean tidal volume and vocal cord angle were measured before and after administration of neuromuscular blocking drugs. Of 108 patients, 100 completed the study. Mean (SD) tidal volume ((11.0 (3.9) ml.kg-1 vs. 13.6 (2.6) ml.kg-1 ; p < 0.001) and mean (SD) vocal cord angle (17° (10°) vs. 26° (5°); p < 0.001) increased significantly after neuromuscular blockade. The proportional increase in mean tidal volume after neuromuscular blockade was positively correlated with vocal cord angle (Spearman's ρ = 0.803; p < 0.001). In conclusion, neuromuscular blockade facilitated facemask ventilation, and the improvement was correlated with further opening of the vocal cords.
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Affiliation(s)
- M K Lee
- Department of Anaesthesiology and Pain Medicine, Hanyang University Seoul Hospital, Seoul, Republic of Korea
| | - K N Kim
- Department of Anaesthesiology and Pain Medicine, Hanyang University Seoul Hospital, Seoul, Republic of Korea
| | - M A Jeong
- Department of Anaesthesiology and Pain Medicine, Hanyang University Seoul Hospital, Seoul, Republic of Korea
| | - S Y Kim
- Department of Anaesthesiology and Pain Medicine, Hanyang University Seoul Hospital, Seoul, Republic of Korea
| | - M S Oh
- College of Medicine, Hanyang University Seoul Hospital, Seoul, Republic of Korea
| | - B S Kwon
- Department of Anaesthesiology and Pain Medicine, Hanyang University Seoul Hospital, Seoul, Republic of Korea
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Guan Y, Li Z, Kim MJ, Lee JY, Choe H, Park SH, Kang SW, Lee J, Lee JH, Kim HB, Lee JH, Kim E, Lee MK. Olsenella intestinalis sp. nov., isolated from cow feces. Arch Microbiol 2022; 204:384. [PMID: 35689096 DOI: 10.1007/s00203-022-03017-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/22/2022] [Indexed: 11/02/2022]
Abstract
A Gram-stain-negative, anaerobic, non-motile, rod-shaped bacterium, designated as BGYT1T, was isolated from the feces of a cow in Andong, Republic of Korea. It was studied using a polyphasic method to determine its taxonomic position. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain BGYT1T formed a lineage within the genus Olsenella and was most closely related to O. umbonate KCTC 15140T (98.2%). The complete genome sequence of strain BGYT1T was 2,476,083 bp long with a G + C content of 66.9 mol% and contained 1835 genes and 8 contigs. The N50 value was 604,117 bp. There were 50 tRNAs, 6 rRNAs (5S, 16S, 23S), 1778 CDSs and 2 BGCs and 1 tmRNA. The values for ANI (76.8%), AAI (67.3%), and dDDH (22.2%) compared to the closest related species were all below the threshold for bacterial species delineation. In addition, genes encoding the cell wall degrading enzymes such as chitinases, β-1,3 glucanases, and proteases were also detected. The strain was able to grow at pH 6.0-8.0 (optimum, pH 7.0), in the presence of 0.5-1.5% NaCl (optimum, 0.5%, w/v) and at the temperature range of 35-40 °C (optimum, 35 °C). The predominant fatty acids were C16:0 DMA (20.2%), C16:0 (20.2%), C18:0 (10.5%) and C18:1 cis 9 (17.0%). The polar lipids consisted of an unidentified phospholipid, four unidentified glycolipids and three unidentified lipids. Based on its phenotypic analyses, phylogenetic and physiological characteristics, strain BGYT1T represented a novel species within the genus Olsenella, for which the name Olsenella intestinalis sp. nov. is proposed. The type strain is BGYT1T (= KCTC 25379T = GDMCC 1.3011T).
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Affiliation(s)
- Yong Guan
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea.,Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Zhun Li
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Min-Ju Kim
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Jae-Young Lee
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Hanna Choe
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Seung-Hwan Park
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Se Won Kang
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Jiyoung Lee
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Ju Huck Lee
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Hyeun Bum Kim
- Department of Animal Resources Science, Dankook University, Cheonan, 31116, South Korea
| | - Ju-Hoon Lee
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, Seoul National University, Seoul, 08826, Republic of Korea
| | - Eunju Kim
- Rural Development Administration, National Institute of Animal Science, Wanju, 55365, Republic of Korea
| | - Mi-Kyung Lee
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea.
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Ham JR, Son YJ, Lee Y, Lee HJ, Yeo J, Lee MJ, Lee MK. Korean naked waxy barley (saechalssal) extract reduces blood glucose in diabetic mice by modulating the PI3K-Akt-GSK3β pathway. Biomed Pharmacother 2022; 150:112976. [PMID: 35447553 DOI: 10.1016/j.biopha.2022.112976] [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: 03/17/2022] [Revised: 04/11/2022] [Accepted: 04/12/2022] [Indexed: 11/29/2022] Open
Abstract
Saechalssal barley is Korea's representative naked waxy barley. This study investigated the anti-diabetic effect of the extract derived from saechalssal and its mechanism. The prethanol extract of saechalssal (SPE) showed greater α-glucosidase inhibitory activity in vitro and a more significant lowering of the postprandial blood glucose levels in normal mice compared to its water extract (SWE). When mice with type 2 diabetes (T2DM) induced by a high-fat diet and streptozotocin were fed SPE (200 mg/kg/day) for six weeks, the fasting blood glucose and serum free fatty acid levels were significantly lower than those of the control group. SPE significantly elevated the hepatic glycogen accumulation with increasing glycogen synthesis-related gene (GYS2 and UGP2) levels compared to the control group. SPE stimulated the expression of the hepatic glycolysis-related genes (GK, PFK1, and PK) and suppressed the gluconeogenesis-related genes (G6Pase, FBP1, and PEPCK). SPE up-regulated the phosphorylation of phosphatidylinositol 3-kinase (PI3K) and protein kinase B (Akt), whereas it down-regulated the phosphorylation of glycogen synthase kinase 3 beta (GSK3β) compared to the control. The major flavonoids of SPE were naringin, prunin, and catechin, while its phenolic acids were ferulic acid and vanillic acid. These phytochemical compounds may contribute to the anti-hyperglycemic effects of SPE in diabetes. Overall, these results suggest that SPE has potential anti-diabetic activity through the regulating the PI3K/Akt/GSK3β pathway.
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Affiliation(s)
- Ju Ri Ham
- Mokpo Marin Food-Industry Research Center, Mokpo 58621, Jeonnam, Republic of Korea
| | - Young-Jin Son
- Department of Pharmacy, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Yongjin Lee
- Department of Pharmacy, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Hyun-Jin Lee
- Department of Crop Foundation, National Institute of Crop Science (NICS), Rural Development Administration (RDA), Wanju 55365, Republic of Korea
| | - Jiyoung Yeo
- Department of Food and Nutrition, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Mi Ja Lee
- Department of Crop Foundation, National Institute of Crop Science (NICS), Rural Development Administration (RDA), Wanju 55365, Republic of Korea.
| | - Mi-Kyung Lee
- Department of Food and Nutrition, Sunchon National University, Suncheon 57922, Republic of Korea.
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Guan Y, Jiang Y, Kim YM, Yu SY, Choi SH, Choe H, Li Z, Lee MK. Pseudophaeobacter flagellatus sp. nov., isolated from coastal water. Int J Syst Evol Microbiol 2022; 72. [DOI: 10.1099/ijsem.0.005399] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-negative, aerobic, motile, rod-shaped novel bacterial strain, designated as MA21411-1T, was isolated from the Korean coast. The colonies were white-yellow-coloured, smooth, convex and entire, spherical and 1.0–1.8 mm in diameter. Phylogenetic analysis based on the 16S rRNA gene sequence showed that strain MA21411-1T is closely related to species of the genus
Pseudophaeobacter
. The 16S rRNA gene sequence similarities between strain MA21411-1T and
Pseudophaeobacter arcticus
DSM 23566T,
Phaeobacter porticola
DSM 103148T and
Pseudophaeobacter leonis
DSM 25627T were 98.31, 97.80 and 97.28 %, respectively. Strain MA21411-1T has a draft genome size of 4 294 042 bp, annotated with 4125 protein-coding genes, and 53 tRNA, three rRNA and one tmRNA genes. The genomic DNA G+C content was 59.2 mol%. Comparative genome analysis revealed that the average nucleotide identity, digital DNA–DNA hybridization and average amino acid identity values among strain MA21411-1T and other related species were below the cut-off levels of 95, 70 and 95.5 %, respectively. The growth temperature range for growth was 15–28 °C (optimum, 25 °C), pH range was 6.0–9.0 (optimum, pH 6.0), and salt tolerance range was 0.5–4 % (optimum 0.5 %). Ubiquinone-10 was the sole quinone present in MA21411-1T and all three closely related strains. The major cellular fatty acid (>10 %) of the strain was summed feature 8 (C18 : 1
ω7c and/or C18 : 1
ω6c). The polar lipid profile contained phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine and four unidentified polar lipids. Based on the phylogenetic tree, as well as phenotypic, chemotaxonomic and genomic features, strain MA21411-1T represents a novel species of the genus
Pseudophaeobacter
, for which the name Pseudophaeobacter flagellatus sp. nov. is proposed. The type strain is MA21411-1T (=KCTC 92095T=GDMCC 1.2988T).
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Affiliation(s)
- Yong Guan
- Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
| | - Yue Jiang
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
| | - Young-Min Kim
- Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Seung Yeob Yu
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
| | - Seung-Hyeon Choi
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
| | - Hanna Choe
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
| | - Zhun Li
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
| | - Mi-Kyung Lee
- Biological Resource Center, Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
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Kweon OJ, Lee JH, Choi YS, Kim BS, Lim YK, Lee MK, Park JH, Park JY, Kim SH. Positivity of Rapid Antigen Testing for SARS-CoV-2 With Serial Followed-up Nasopharyngeal Swabs in Hospitalized Patients due to COVID-19. J Korean Med Sci 2022; 37:e168. [PMID: 35638195 PMCID: PMC9151995 DOI: 10.3346/jkms.2022.37.e168] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 04/05/2022] [Indexed: 11/20/2022] Open
Abstract
Despite the accuracy of nucleic acid amplification tests (NAATs), rapid antigen tests (RATs) for severe acute respiratory syndrome coronavirus-2 are widely used as point-of-care tests. A total of 282 pairs of reverse transcription-polymerase chain reaction and Standard Q COVID-19 Ag tests were serially conducted for 68 patients every 3-4 days until their discharge. Through a field evaluation of RATs using direct nasopharyngeal swabs, the sensitivities were 84.6% and 87.3% for E and RNA-dependent RNA polymerase (RdRp) genes, respectively, for specimens with cycle thresholds (Cts) < 25. The Ct values of E and RdRp genes for 95% detection rates by RATs were 16.9 and 18.1, respectively. The sensitivity of RAT was 48.4% after the onset of symptoms, which was not sufficient. RAT positivity gradually decreased with increased time after symptom onset and had continuously lower sensitivity than NAATs.
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Affiliation(s)
- Oh Joo Kweon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Joo Hee Lee
- Department of Pulmonary Medicine, Hyundae General Hospital, Chung-Ang University, Namyangju, Korea
| | - Yang-Seon Choi
- Department of Orthopaedic Surgery, Chung-Ang University Hospital, Seoul, Korea
| | - Boo-Seop Kim
- Department of Orthopaedic Surgery, Hyundae General Hospital, Chung-Ang University, Namyangju, Korea
| | - Yong Kwan Lim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Joung Ha Park
- Department of Internal Medicine, Hyundae General Hospital, Chung-Ang University, Namyangju, Korea
| | - Ji Young Park
- Department of Pediatrics, Chung-Ang University Hospital, Seoul, Korea.
| | - Seong Hwan Kim
- Department of Orthopaedic Surgery, Chung-Ang University Hospital, Seoul, Korea.
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Hwang HJ, Kim JS, Lee J, Min JS, Jeong KB, Kim E, Lee MK, Chi SW. Single-Molecule Sensing of an Anticancer Therapeutic Protein-Protein Interaction Using the Chemically Modified OmpG Nanopore. Anal Chem 2022; 94:7449-7454. [PMID: 35583342 DOI: 10.1021/acs.analchem.1c04840] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Nanopore sensors are a highly attractive platform for single-molecule sensing for sequencing, disease diagnostics, and drug screening. Outer membrane protein G (OmpG) nanopores have advantages for single-molecule sensing owing to their rigid monomeric structure, which comprises seven flexible loops, providing distinct gating patterns upon analyte binding. Blocking of the protein-protein interaction between B-cell lymphoma-extra-large (Bcl-xL) and the BH3 domain of Bcl-2 homologous antagonist/killer (Bak-BH3) has been reported as a promising strategy for anticancer therapy. Here, we characterized the interaction between Bcl-xL and Bak-BH3 as well as its inhibition by a small-molecule inhibitor using click chemistry-based Bak-BH3 peptide-conjugated OmpG nanopores. The binding of Bcl-xL to Bak-BH3 generated characteristic gating signals involving significant changes in the amplitudes of noise and gating parameters such as gating frequency, open probability, and durations of open and closed states. Notably, specific inhibition of Bcl-xL by the small-molecule antagonist, ABT-737, led to the recovery of the noise and gating parameters. Collectively, these results revealed that the chemically modified OmpG nanopore can serve as a valuable sensor platform for ultrasensitive, rapid, and single-molecule-based drug screening against protein-protein interactions, which are therapeutic targets for various diseases.
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Affiliation(s)
- Hye-Jin Hwang
- Disease Target Structure Research Center, Division of Biomedical Research, KRIBB, Daejeon 34141, Republic of Korea.,Department of Proteome Structural Biology, KRIBB School of Bioscience, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Jin-Sik Kim
- Disease Target Structure Research Center, Division of Biomedical Research, KRIBB, Daejeon 34141, Republic of Korea
| | - Jeonghyun Lee
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Jun Sik Min
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Ki-Baek Jeong
- Disease Target Structure Research Center, Division of Biomedical Research, KRIBB, Daejeon 34141, Republic of Korea
| | - Eunha Kim
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Mi-Kyung Lee
- Disease Target Structure Research Center, Division of Biomedical Research, KRIBB, Daejeon 34141, Republic of Korea.,Department of Proteome Structural Biology, KRIBB School of Bioscience, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Seung-Wook Chi
- Disease Target Structure Research Center, Division of Biomedical Research, KRIBB, Daejeon 34141, Republic of Korea.,Department of Proteome Structural Biology, KRIBB School of Bioscience, University of Science and Technology, Daejeon 34113, Republic of Korea
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Kweon OJ, Kim KH, Kim HM, Khan SA, Jeong JH, Lim YK, Kim HR, Jeon CO, Lee MK. Arsenicicoccus cauae sp. nov., isolated from the blood of a pediatric gastroenteritis patient. Int J Syst Evol Microbiol 2022; 72. [DOI: 10.1099/ijsem.0.005381] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-positive coccus was isolated from the blood of a paediatric patient suffering from gastroenteritis. The taxonomic position of this catalase-positive, non-motile, non-spore-forming facultative anaerobe designated as strain MKL-02T was investigated using a polyphasic approach. Colonies grown on tryptic soy agar with 10 % sheep blood were circular, creamy yellow, and convex. Phylogenetic analysis based on 16S rRNA gene and whole-genome sequences revealed that this strain was most closely related to
Arsenicicoccus bolidensis
CCUG 47306T within the cluster of the genus
Arsenicicoccus
. Average nucleotide identity and digital DNA–DNA hybridization values between strain MKL-02T and
A. bolidensis
DSM 15745T, A. dermatophillus DSM 25571T and
A. piscis
DSM 22760T were 89.5 and 37.0 %, 79.6 and 22.4 %, and 75.9 and 21.0 %, respectively. The genomic size of strain MKL-02T was 3 423 857 bp with a 72.7 mol% G+C content. Growth was observed at 10–45 °C (optimum, 37–40 °C) and pH 6.0–10.0 (optimum, pH 7.0), in the presence of 0–10 % (w/v) NaCl (optimum, 0.5 %). Cells of strain MKL-02T were non-motile cocci and 0.50–0.60 µm long, as determined by transmission electron microscopy. The strain was catalase-positive and oxidase-negative. The major fatty acid type (>10 % of total) was C15 : 0. The polar lipid profile consisted of two unidentified phospholipids, three unidentified lipids and an unidentified aminophospholipid. The strain contained MK-8 (H4) as the predominant menaquinone. Based on phylogenetic and phenotypic considerations, it is proposed that strain MKL-02T be classified as a new species, named Arsenicicoccus cauae sp. nov. The type strain is MKL-02T (=NCCP 16967T=JCM 34624T).
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Affiliation(s)
- Oh Joo Kweon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea
| | - Kyung Hyun Kim
- Department of Life Science, Chung Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea
| | - Hyung Min Kim
- Department of Life Science, Chung Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea
| | - Shehzad Abid Khan
- Department of Life Science, Chung Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea
| | - Ji Hun Jeong
- Department of Laboratory Medicine, Daejeon Eulji Medical Center, Eulji University, 95 Dunsanseo-ro, Seo-gu, Daejeon, Republic of Korea
| | - Yong Kwan Lim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea
| | - Hye Ryoun Kim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea
| | - Che Ok Jeon
- Department of Life Science, Chung Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea
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Lee Y, Lee HJ, Shin HB, Ham JR, Lee MK, Lee MJ, Son YJ. Triphenyl hexene, an active substance of Betaone barley water extract, inhibits RANKL-induced osteoclast differentiation and LPS-induced osteoporosis. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105037] [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: 10/18/2022] Open
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Zhao Y, Lee MK, Lim J, Moon H, Park HS, Zheng W, Yu JH. The velvet-activated putative C6 transcription factor VadZ regulates development and sterigmatocystin production in Aspergillus nidulans. Fungal Biol 2022; 126:421-428. [DOI: 10.1016/j.funbio.2022.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 04/22/2022] [Accepted: 05/02/2022] [Indexed: 01/28/2023]
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Chen H, Park SK, Joung Y, Kang T, Lee MK, Choo J. SERS-based dual-mode DNA aptasensors for rapid classification of SARS-CoV-2 and influenza A/H1N1 infection. Sens Actuators B Chem 2022; 355:131324. [PMID: 34987275 PMCID: PMC8716169 DOI: 10.1016/j.snb.2021.131324] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/23/2021] [Accepted: 12/27/2021] [Indexed: 05/02/2023]
Abstract
We developed a dual-mode surface-enhanced Raman scattering (SERS)-based aptasensor that can accurately diagnose and distinguish severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and influenza A/H1N1 at the same time. Herein, DNA aptamers that selectively bind to SARS-CoV-2 and influenza A/H1N1 were immobilized together on Au nanopopcorn substrate. Raman reporters (Cy3 and RRX), attached to the terminal of DNA aptamers, could generate strong SERS signals in the nanogap of the Au nanopopcorn substrate. Additionally, the internal standard Raman reporter (4-MBA) was immobilized on the Au nanopopcorn substrate along with aptamer DNAs to reduce errors caused by changes in the measurement environment. When SARS-CoV-2 or influenza A virus approaches the Au nanopopcorn substrate, the corresponding DNA aptamer selectively detaches from the substrate due to the significant binding affinity between the corresponding DNA aptamer and the virus. As a result, the related SERS intensity decreases with increasing target virus concentration. Thus, it is possible to determine whether a suspected patient is infected with SARS-CoV-2 or influenza A using this SERS-based DNA aptasensor. Furthermore, this sensor enables a quantitative evaluation of the target virus concentration with high sensitivity without being affected by cross-reactivity. Therefore, this SERS-based diagnostic platform is considered a conceptually new diagnostic tool that rapidly discriminates against these two respiratory diseases to prevent their spread.
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Affiliation(s)
- Hao Chen
- Department of Chemistry, Chung-Ang University, Seoul 06974, South Korea
| | - Sung-Kyu Park
- Nano-Bio Convergence Department, Korea Institute of Materials Science (KIMS), Changwon 51508, South Korea
| | - Younju Joung
- Department of Chemistry, Chung-Ang University, Seoul 06974, South Korea
| | - Taejoon Kang
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, South Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul 06973, South Korea
| | - Jaebum Choo
- Department of Chemistry, Chung-Ang University, Seoul 06974, South Korea
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Oyama O, Park DH, Lee MK, Byeon JY, Lee EB, Chung JY, Jung HJ, Park J, Kim T, Jee SH, Kim NK, Jeon JY. Characteristics of Defecation Function Related Quality of Life According to Cancer Location in Colorectal Cancer Survivors. Asian Oncol Nurs 2022. [DOI: 10.5388/aon.2022.22.4.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Okimitsu Oyama
- BS, Department of Sports Industry, Yonsei University, Seoul, Korea
| | - Dong-Hyuk Park
- MS, Department of Sports Industry, Yonsei University, Seoul, Korea
| | - Mi-Kyung Lee
- Ph.D, Department of Sports Industry, Yonsei University · Frontier Research Institute of Convergence Sports Science, Yonsei University, Seoul, Korea
| | - Ji-yong Byeon
- Ph.D., Department of Sports Industry, Yonsei University, Seoul, Korea
| | - Eun Byeol Lee
- MS, Department of Sports Industry, Yonsei University, Seoul, Korea
| | - Jae-Youn Chung
- Ph.D., Department of Sports Industry, Yonsei University, Seoul, Korea
| | - Hye Jeong Jung
- MS, Department of Nursing, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jisu Park
- Prof., Cancer Prevention Center, Yonsei Cancer Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Taeil Kim
- Prof., Cancer Prevention Center, Yonsei Cancer Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sun Ha Jee
- Prof., Department of Epidemiology and Health Promotion, Institute for Health Promotion, Graduate School of Public Health, Yonsei University, Seoul, Korea
| | - Nam Kyu Kim
- Prof., Division of Colorectal Surgery, Department of Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Justin Y Jeon
- Prof., Department of Sports Industry, Yonsei University · Exercise Medicine Center for Diabetes and Cancer Patients, ICONS, Seoul, Korea
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Duc Nguyen H, Hoang NMH, Jo WH, Ham JR, Lee MK, Kim MS. Associations among the TREM-1 Pathway, Tau Hyperphosphorylation, Prolactin Expression, and Metformin in Diabetes Mice. Neuroimmunomodulation 2022; 29:359-368. [PMID: 35130556 DOI: 10.1159/000521013] [Citation(s) in RCA: 4] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 11/08/2021] [Indexed: 01/06/2023] Open
Abstract
INTRODUCTION Diabetes mellitus (DM) is a risk factor for Alzheimer's disease (AD). Increasing evidence indicates that the triggering receptor expressed on myeloid cells (TREM)-1 amplifies chronic inflammation, as well as the roles of prolactin (PRL) and metformin (MET) in tau hyperphosphorylation. However, the associations among TREM-1, tau hyperphosphorylation, PRL expression, and MET in DM remain unclear. METHODS Streptozotocin was used to induce experimental DM in C57BL/6N mice. MET was orally administered at a dose of 400 mg/kg body weight for 6 weeks prior to hippocampal collection in DM mice. Various parameters pertaining to the TREM-1 pathway, tau hyperphosphorylation, PRL, and related factors were analyzed. RESULTS Quantitative polymerase chain reaction and Western blot analysis demonstrated that the expression levels of TREM-1, DAP12, casp1, interleukin-1β, Cox2, inducible nitric oxide synthase, pituitary transcriptional factor-1 (Pit-1), and PRL were significantly increased in the hippocampus of DM mice; the expression levels of these pro-inflammatory mediators, PRL receptor (PRLR) short or long (PRLR-S and PRLR-L), and PRL regulatory element-binding (Preb) protein in DM mice treated with MET (DM + MET) were significantly decreased compared with those in control (CON) mice. The levels of p-Tau and glycogen synthase kinase-3 in the DM group were significantly higher than those in the CON group and significantly lower than those in the DM + MET group. CONCLUSION We confirmed the therapeutic potential of MET for both DM and neurodegeneration. Our findings shed new light on the effects of DM on the pathophysiology of AD via the TREM-1 pathway and PRL expression. Thus, an improved understanding of the TREM-1 pathway in hyperglycemic conditions, as well as PRL, Preb, Pit-1, PRLR-L, and PRLR-S gene expression in the liver, brain, and other sites, may help unravel the pathogenesis of insulin resistance and neurodegeneration.
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Affiliation(s)
- Hai Duc Nguyen
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Ngoc Minh Hong Hoang
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Won Hee Jo
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Ju Ri Ham
- Department of Food and Nutrition, Sunchon National University, Suncheon, Republic of Korea
- Mokpo Marine Food-Industry Research Center, Mokpo, Jeonam, Republic of Korea
| | - Mi-Kyung Lee
- Department of Food and Nutrition, Sunchon National University, Suncheon, Republic of Korea
| | - Min Sun Kim
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
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Chung HY, Lee MK, Kim W, Choi MK, Kim SH, Kim E, Kim MH, Ha JH, Lee H, Bae YJ, Kwun IS. Issues pertaining to Mg, Zn and Cu in the 2020 Dietary Reference Intakes for Koreans. Nutr Res Pract 2022; 16:S113-S125. [PMID: 35651833 PMCID: PMC9127514 DOI: 10.4162/nrp.2022.16.s1.s113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 01/13/2022] [Accepted: 03/08/2022] [Indexed: 11/04/2022] Open
Affiliation(s)
- Hae-Yun Chung
- Department of Food and Nutrition, Soongeui Women’s College, Seoul 04628, Korea
| | - Mi-Kyung Lee
- Department of Food and Nutrition, Sunchon National University, Suncheon 57922, Korea
| | - Wookyoung Kim
- Department of Food Science and Nutrition, Dankook University, Cheonan 31116, Korea
| | - Mi-Kyeong Choi
- Department of Food and Nutrition, Kongju National University, Yesan 32439, Korea
| | - Se-Hong Kim
- Department of Family Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon 16247, Korea
| | - Eunmee Kim
- Department of Dietetics, Samsung Medical Center, Seoul 06351, Korea
| | - Mi-Hyun Kim
- Department of Food and Nutrition, Kongju National University, Yesan 32439, Korea
| | - Jung-Heun Ha
- Department of Food Science and Nutrition, Dankook University, Cheonan 31116, Korea
| | - Hongmie Lee
- Department of Food Science and Nutrition, Daejin University, Pocehon 11159, Korea
| | - Yun-Jung Bae
- Division of Food Science and Biotechnology, Korea National University of Transportation, Jeungpyeong 27909, Korea
| | - In-Sook Kwun
- Department of Food and Nutrition, College of Life Science, Andong National University, Andong 36729, Korea
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Choi Y, Park KY, Han HS, Lee MK, Seo SJ. Comparative Analysis of Cutaneous Fungi in Atopic Dermatitis Patients and Healthy Individuals. Ann Dermatol 2022; 34:118-124. [PMID: 35450318 PMCID: PMC8989898 DOI: 10.5021/ad.2022.34.2.118] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 11/16/2021] [Accepted: 11/23/2021] [Indexed: 11/22/2022] Open
Abstract
Background Atopic dermatitis (AD) is a chronic relapsing inflammatory skin disease triggered by diverse factors. Microbes are one of the crucial risk factors for AD development or exacerbation. However, the effect of a fungal burden on AD has been overlooked compared to bacteria. Objective This study aimed to comparatively analyze cutaneous fungal distribution between AD patients and healthy individuals by polymerase chain reaction (PCR)-based analysis. Methods Skin samples of AD outpatients and healthy individuals collected at the Chung-Ang University were analyzed. Representative AD-associated fungal genera, Candida, dermatophytes, and Malassezia , were analyzed using specific primer and amplification methods. Amplicons were sequenced, and the fungal distribution of both groups were compared. Results Totally, 211 patients and 23 healthy individuals were studied. Of the 211 patients, 10.90% (23/211) had Candida species, whereas 0% (0/23) healthy individuals showed its presence. The most frequently detected species in patients was Candida albicans (5.21%) followed by Candida parapsilosis (3.79%). For dermatophytes, 1.42% (3/211) of patients showed positive results, whereas 0% (0/23) healthy individuals showed positive results. Malassezia species were identified in 20.85% (44/211) and 8.70% (2/23) in patients and healthy individuals, respectively. Malassezia restricta was the most frequently identified species in the AD patient group, and the only species found in the healthy control group. Conclusion The distribution of Candida spp., dermatophytes, and Malassezia spp. are altered with AD development.
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Affiliation(s)
- Yoojeong Choi
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Hye Sung Han
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Seong Jun Seo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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Jung HJ, Heo WI, Park KY, Lee MK, Ahn JY, Park MY, Seo SJ. The Role of Collagen VI α6 Chain Gene in Atopic Dermatitis. Ann Dermatol 2022; 34:46-54. [PMID: 35221595 PMCID: PMC8831303 DOI: 10.5021/ad.2022.34.1.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 08/19/2021] [Accepted: 09/08/2021] [Indexed: 11/08/2022] Open
Abstract
Background Objective Methods Results Conclusion
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Affiliation(s)
- Hye Jung Jung
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - Won Il Heo
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Mi-Kyung Lee
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Ji Young Ahn
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - Mi Youn Park
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - Seong Jun Seo
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
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Roh YJ, Noh HH, Koo NY, Shin SH, Lee MK, Park KY, Seo SJ. Development of In Vitro Co-Culture Model to Mimic the Cell to Cell Communication in Response to Urban PM 2.5. Ann Dermatol 2022; 34:110-117. [PMID: 35450307 PMCID: PMC8989910 DOI: 10.5021/ad.2022.34.2.110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 11/20/2021] [Accepted: 11/23/2021] [Indexed: 11/17/2022] Open
Abstract
Background Airborne particulate matter (PM), a widespread air contaminant, is a complex mixture of solids and aerosols composed of particles suspended in the air. PM is associated with inflammatory responses and may worsen inflammatory skin diseases. However, the mechanisms through which PM affects atopic dermatitis (AD) remain unclear. Objective To establish an in vitro model that more accurately mimics AD using human keratinocyte (HaCaT), dermal fibroblast (HDF), and mast cell (HMC-1) and using this model to investigate the mechanism through which PMs affect AD. Methods An AD-like in vitro model was established by seeding HaCaT, HDF, and HMC-1 cells with recombinant human interleukin (IL)-1α and polyinosinic:polycytidylic acid. We confirmed the effect of PM on the inflammatory cytokine expression of a triple-cell culture model. SRM 1649b Urban Dust, which is mainly composed of polycyclic aromatic hydrocarbons, was used as the reference PM. The effects of PM on the expression levels of proinflammatory cytokines and skin barrier markers were assessed using quantitative real-time polymerase chain reaction and western blotting. Inflammatory cytokine levels were measured using an enzyme-linked immunosorbent assay. Results Interactions between various skin cell types were evaluated using a co-culture system. PM treatment increased mRNA and protein levels of the inflammatory cytokines IL-6, IL-1α, tumor necrosis factor-α, IL-4, and IL-1β and decreased the expression of the skin barrier markers filaggrin and loricrin. Conclusion Our results suggest that an in vitro triple-cell culture model using HaCaT, HDF, and HMC-1 cells may be reliable for obtaining more physiological, functional, and reproducible data on AD and skin barriers.
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Affiliation(s)
- Yoon Jin Roh
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Hyun Ha Noh
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Na Yeon Koo
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Sun Hye Shin
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Seong Jun Seo
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
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Ham JR, Yun KW, Lee MK. Anti-Inflammatory and Antioxidant in Vitro Activities of Magnoliae Flos Ethanol Extract. Prev Nutr Food Sci 2021; 26:485-491. [PMID: 35047446 PMCID: PMC8747962 DOI: 10.3746/pnf.2021.26.4.485] [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] [Received: 07/29/2021] [Revised: 08/20/2021] [Accepted: 08/27/2021] [Indexed: 12/29/2022] Open
Abstract
This study evaluated Magnoliea Flos ethanol extract (MFE) as a potential natural anti-inflammatory and antioxidant in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages and in vitro antioxidant assays. MFE (10, 30, and 50 μg/mL) dose-dependently inhibited LSP-induced nitric oxide production, which is mediated by down-regulating gene and protein expression of inducible nitric oxide synthase and cyclooxygenase-2. MFE also down-regulated both gene and protein expression of nuclear factor-kappa B and its downstream genes, such as tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), compared with vehicle-treated cells. As a result, MFE treatment of LPS-stimulated macrophages significantly suppressed release of pro-inflammatory cytokines, such as TNF-α and IL-6. The antioxidant in vitro test revealed 2,2-diphenyl-1-picrylhydrazyl and 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging activities of MFE (0.25∼5 mg/mL) of 16.62% to 75.17% and 38.54% to 92.91%, respectively. The ferric reducing antioxidant ability of MFE was 0.54 mM to 2.14 mM. Overall, MFE exhibited antioxidant activity and an effective anti-inflammatory response in LPS-stimulated macrophages, which is potentially valuable for application as a natural functional material.
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Affiliation(s)
- Ju Ri Ham
- Mokpo Marine Food-Industry Research Center, Jeonnam 58621, Korea
| | - Kyeong Won Yun
- Department of Oriental Medicine Resources, Sunchon National University, Jeonnam 57922, Korea
| | - Mi-Kyung Lee
- Department of Food and Nutrition, Sunchon National University, Jeonnam 57922, Korea
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Lim YK, Kweon OJ, Kim HR, Kim TH, Lee MK. Field evaluation of seven SARS-COV-2 antigen assays. J Infect Public Health 2021; 15:199-202. [PMID: 34991002 PMCID: PMC8697424 DOI: 10.1016/j.jiph.2021.12.012] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 12/06/2021] [Accepted: 12/21/2021] [Indexed: 11/26/2022] Open
Abstract
There is a global demand for rapid diagnostic tests (RDTs) for Coronavirus disease 2019 (COVID-19), and the interest in their clinical compliance is growing. In this study, we evaluated the clinical compliance of seven different severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antigen RDTs. Nasopharyngeal/oropharyngeal swab specimens from COVID-19-confirmed cases and reverse-transcription PCR (RT-PCR) screening were used to evaluate the performance of seven RDTs. Using the RT-PCR and RDT results, we predicted the cycle threshold (Ct) of each target gene (E, RdRP, and N genes) which 50% (Ct50) and 95% (Ct95) detection rates were achieved in the RDTs. A total of 482 specimens were enrolled in our study: 316 specimens from COVID-19-confirmed cases and 166 RT-PCR-negative specimens. The median values of Ct50 and Ct95 for the seven RDTs were in the ranges of ranged 24.3-30.9 and 19.3-22.6 for E, 25.5-31.5 and 20.9-24.0 for RdRP, and 26.8-32.3 and 22.7-25.7 for N, respectively. The RDTs showed acceptable compliance only for specimens with high viral burdens (Ct < 20). However, the false-negative rate increased by more than 50% for most of the RDTs in low-viral burden specimens (Ct> 30). These results suggest that RDTs should not be used without molecular assays for COVID-19 screening for asymptomatic patients because of their high false-negative rates.
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Affiliation(s)
- Yong Kwan Lim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Oh Joo Kweon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Hye Ryoun Kim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Tae-Hyoung Kim
- Department of Urology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea.
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