1
|
Kim WH, Lee DH, Kim JE, Jeong HW, Chung JO, Roh J, Kim W, Fu X, Shim SM. Characterization of the intestinal transport mechanism of polystyrene microplastics (MPs) and the potential inhibitory effect of green tea extracts on MPs intestinal absorption. Toxicol In Vitro 2024; 97:105813. [PMID: 38522493 DOI: 10.1016/j.tiv.2024.105813] [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: 09/06/2023] [Revised: 03/04/2024] [Accepted: 03/21/2024] [Indexed: 03/26/2024]
Abstract
The aims of the current study included characterizing the intestinal transport mechanism of polystyrene microplastics (MPs) with different charges and sizes in the intestinal epithelial cell model and determining the inhibitory effect of green tea extracts (GTEs) on the intestinal absorption of MPs in Caco-2 cells. The smaller sizes, which included diameters of 0.2 μm, of amine-modified MPs compared to either larger size (1 μm diameter, or carboxylate-MPs (0.2 and 1 μm diameter) significantly lowered the cell viability of caco-2 cells that were measured by MTT assay (p < 0.05). The transported amount (particles/mL of the cell media) of amine-modified MPs by the Caco-2 cell, was not dependent according to the concentrations, energy, or temperature, but it was higher than the carboxylate-modified MPs. The co-treatment of GTEs with the amine-modified MPs inhibited Caco-2 cell cytotoxicity as well as reduced the production of intracellular reactive oxygen species (ROS) in HepG2 generated by the exposure of amine-modified MPs. The GTEs co-treatment also increased trans-epithelial electrical resistances (TEER) and reduced the transportation of Lucifer Yellow via the Caco-2 monolayer compared to only the amine-modified MPs exposure. The GTEs treatment led to a decrease in the number of amine-modified MPs transported to the basal side of the Caco-2 monolayer. The results from our study suggest that the consumption of GTEs could enhance the intestinal barrier function by recovering intestinal epithelial cell damage induced by MPs, which resulted in a decrease of the intestinal absorption of MPs.
Collapse
Affiliation(s)
- Woo-Hyun Kim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, South Korea
| | - Dong-Ho Lee
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, South Korea
| | - Jeong-Eun Kim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, South Korea
| | - Hyun Woo Jeong
- Healthcare Research Division, AMOREPACIFIC Research and Innovation (R&I) Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - Jin-Oh Chung
- Healthcare Research Division, AMOREPACIFIC Research and Innovation (R&I) Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - JongHwa Roh
- Healthcare Research Division, AMOREPACIFIC Research and Innovation (R&I) Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - WanGi Kim
- Healthcare Research Division, AMOREPACIFIC Research and Innovation (R&I) Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - Xiaoting Fu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266005, China
| | - Soon-Mi Shim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, South Korea.
| |
Collapse
|
2
|
Yi S, Song H, Kim WH, Lee S, Guk JH, Woo J, Cho S. Dynamics of microbiota and antimicrobial resistance in on-farm dairy processing plants using metagenomic and culture-dependent approaches. Int J Food Microbiol 2024; 417:110704. [PMID: 38640816 DOI: 10.1016/j.ijfoodmicro.2024.110704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/22/2024] [Accepted: 04/12/2024] [Indexed: 04/21/2024]
Abstract
On-farm dairy processing plants, which are situated close to farms and larger dairy processing facilities, face unique challenges in maintaining environmental hygiene. This can impact various stages of dairy processing. These plants operate on smaller scales and use Low-Temperature-Long-Time (LTLT) pasteurization, making them more susceptible to microbial contamination through direct and indirect contact. Antimicrobial-resistant bacteria found on dairy farms pose risks to human health by potentially transferring resistance via dairy products. Our study aimed to investigate microbial distribution and antimicrobial resistance at four key stages: the farm, pre-pasteurization, post-pasteurization, and processing environments. We assessed microbial distribution by quantifying indicator bacteria and conducting metagenomic analysis. Antimicrobial resistance was examined by identifying resistance phenotypes and detecting resistance genes in bacterial isolates and metagenomes. Our results showed that the indicator bacteria were detected at all stages of on-farm dairy processing. We observed a significant reduction in aerobic microbes and coliforms post-pasteurization. However, contamination of the final dairy products increased, suggesting potential cross-contamination during post-pasteurization. Metagenomic analysis revealed that Pseudomonas, a representative psychrotrophic bacterium, was predominant in both the farm (24.1 %) and pre-pasteurization (65.9 %) stages, indicating microbial transfer from the farms to the processing plants. Post-pasteurization, Pseudomonas and other psychrotrophs like Acinetobacter and Enterobacteriaceae remained dominant. Core microbiota analysis identified 74 genera in total, including 13 psychrotrophic bacteria, across all stages. Of the 59 strains isolated from these plants, 49 were psychrotrophic. Antimicrobial resistance analysis showed that 74.6 % (44/59) of isolates were resistant to at least one antibiotic, with cefoxitin-, ampicillin-, amoxicillin-, and ticarcillin-resistant bacteria present at all stages. Identical antimicrobial resistance patterns were observed in isolates from serial stages of the same farm and season, suggesting bacterial transmission across stages. Additionally, 27.1 % (16/59) of isolates carried plasmid-mediated resistance genes, which were also detected in the metagenomes of non-isolated samples, indicating potential antimicrobial resistance gene transmission and their presence in uncultured bacteria. These findings reveal the persistence of antimicrobial-resistant psychrotrophic bacteria in on-farm dairy processing plants, which pose potential health risks via dairy consumption. Our study underscores the importance of both culture-dependent and culture-independent methods to fully understand their distribution and impact.
Collapse
Affiliation(s)
- Saehah Yi
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Hyokeun Song
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Woo-Hyun Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Soomin Lee
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Jae-Ho Guk
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - JungHa Woo
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Seongbeom Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea.
| |
Collapse
|
3
|
Kim WH, Park HH, Ahn SJ, Park M, Hong CK. The use of cochlear-enhancement imaging to predict hearing preservation following vestibular schwannoma removal. J Neurosurg Sci 2024; 68:174-180. [PMID: 33940784 DOI: 10.23736/s0390-5616.21.05395-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Hearing preservation is challenging for patients after the removal of large vestibular schwannomas (VSs). Here, using preoperative magnetic resonance (MR) imaging, we investigated the significance of cochlear enhancement (CE) for predicting postoperative hearing preservation. METHODS Between January 2014 and December 2019, 34 VS-patients with serviceable hearing underwent tumor-removal surgery using a retrosigmoid approach. The presence or absence of CE using both T2-weighted and gadolinium-enhanced T1-weighted MR images was assessed in VS patients using the pixel-analysis method. Segmented volumetric analyses were also performed using GrowCut 3D slicer software. RESULTS There were 17 patients (50%) without CE and 17 (50%) with CE. Ten of the 17 non-CE patients (58.8%) had postoperative hearing preservation. In contrast, only 3 of the 17 patients with CE (17.6%) had postoperative hearing preservation. There were no significant tumor-characteristic differences between the two groups. The presence of CE on both the T2-weighted and the gadolinium-enhanced T1-weighted MR images correlated significantly with postoperative hearing outcomes (P=0.032). Only pure-tone averages were significantly different between the two groups (P=0.049). CONCLUSIONS Preoperative serviceable hearing is likely to be preserved after surgery in non-CE VS patients. Preoperative CE assessment using MR imaging may be a useful predictor for postoperative hearing outcomes in VS patients.
Collapse
Affiliation(s)
- Woo-Hyun Kim
- Department of Neurosurgery, Brain Tumor Center, Gangnam Severance Hospital, Yonsei University Health System, Seoul, South Korea
| | - Hun H Park
- Department of Neurosurgery, Brain Tumor Center, Gangnam Severance Hospital, Yonsei University Health System, Seoul, South Korea
| | - Sung J Ahn
- Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Mina Park
- Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Chang K Hong
- Department of Neurosurgery, Brain Tumor Center, Gangnam Severance Hospital, Yonsei University Health System, Seoul, South Korea -
| |
Collapse
|
4
|
Jeong J, Song H, Kim WH, Chae M, Lee JY, Kwon YK, Cho S. Tracking the contamination sources of microbial population and characterizing Listeria monocytogenes in a chicken slaughterhouse by using culture-dependent and -independent methods. Front Microbiol 2023; 14:1282961. [PMID: 38098672 PMCID: PMC10720907 DOI: 10.3389/fmicb.2023.1282961] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/09/2023] [Indexed: 12/17/2023] Open
Abstract
Listeria monocytogenes is the etiologic agent of listeriosis, a foodborne disease that poses a threat to public health globally. Chicken meat exhibits heightened susceptibility to L. monocytogenes contamination during butchery. The persistence of this pathogen in the slaughterhouse environment enables recurring contamination of meat products. This study aimed at identifying the sources and transmission routes of L. monocytogenes contamination within an abattoir where it was consistently detected for three consecutive years (2019-2021). Furthermore, the environmental factors aiding contamination along chicken processing lines were determined by surveying the microbiome within the facility. Samples collected in 2019 to 2021 were subjected to culture-dependent analysis to assess the prevalence, serotypes, and multi-locus sequence typing (MLST) of L. monocytogenes. Additionally, the specimens collected in 2021 underwent culture-independent analysis via real-time quantitative polymerase chain reaction (qPCR) and 16S rRNA gene amplicon sequencing to identify the contamination sources and characterize the entire microbial community within the slaughterhouse. L. monocytogenes was isolated only from the clean zone, where the final slaughtering stage occurs. Most strains isolated from the final carcasses showed the same genetic cluster as the isolate in the chilling water and were assigned to MLST profile ST3. Culture-independent qPCR confirmed L. monocytogenes contamination in all samples, excluding post-scalding carcasses, prewashed post-evisceration carcasses, and the bleeding areas. Consequently, qPCR enabled more comprehensive identification of L. monocytogenes contamination points than culture-dependent approaches. Moreover, 16S rRNA gene amplicon sequencing demonstrated that psychro-tolerant and spoilage-related bacteria with L. monocytogenes-like attributes exhibited enhanced viability in the clean zone and immersion-chilling water. Metagenomics-based source tracking analysis further revealed that the shackles and chilling waters represent predominant sources of cross-contamination between different slaughterhouse zones, whereas the grading and packaging workstations and chilling water in the clean zone were deemed crucial sources affecting final carcass contamination. Collectively, these findings demonstrate through culture-dependent and -independent methods that L. monocytogenes spreads along the slaughter line, contaminating the slaughterhouse. Moreover, by investigating changes in microbial community and bacterial flow along the slaughter line within the facility, the sources influencing carcass contamination can be effectively traced.
Collapse
Affiliation(s)
- Jiyeon Jeong
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea
| | - Hyokeun Song
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea
| | - Woo-Hyun Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea
| | - Myeongju Chae
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea
| | - Ji-Youn Lee
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea
| | - Yong-Kuk Kwon
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea
| | - Seongbeom Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea
| |
Collapse
|
5
|
Kim WH, Choi WJ, Kim JE, Choi J, Hong YD, Nam J, Park WS, Shim SM. Kinetic conversion of BIOGF1K enriched in compound K from in vitro 3-D human tissue model. Curr Res Pharmacol Drug Discov 2023; 5:100165. [PMID: 37869704 PMCID: PMC10589745 DOI: 10.1016/j.crphar.2023.100165] [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: 09/04/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/24/2023] Open
Abstract
The purposes of current study were to investigate the effect of ginsenosides from BIOGF1K enriched in compound K (CK) and compound Y (CY) on the skin barrier function, the deposition in in vitro 3-D human tissue model (EpiDermFT™ Full Thickness 400), and to identify and quantify kinetic bioconversion of the ginsenosides in artificial skin by utilizing the Fourier transform infrared spectroscopy (FT-IR) and liquid chromatography mass spectrometry (LC-MS), respectively. Epidermal barrier integrity evaluated using transepithelial electrical resistance (TEER) was significantly higher in the BIOGF1K treatment than the CY or CK individual treatment throughout incubation (p < 0.05). Skin deposition (%) of CY and CK from BIOGF1K treatment was approximately 4 and 2 times higher than the CY and CK single component treatment, respectively. Total amount of CK found in human skin by deposition and bioconversion was approximately 1087.3, 528.82, and 867.76 μM after topical treatment of BIOGF1K, CK, and CY. Results from the current study reveal that topical treatment of BIOGF1K more effectively induced CK deposition as well as bioconversion of CY to CK than that of a single treatment of CY or CK, suggesting that BIOGF1K could be a useful cosmetic preparation for enhancing skin function.
Collapse
Affiliation(s)
- Woo-Hyun Kim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul, 05006, South Korea
| | - Won-Jo Choi
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, South Korea
| | - Jeong-Eun Kim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul, 05006, South Korea
| | - Joonho Choi
- AMOREPACIFIC Research and Innovation Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, 17074, Gyeonggi-do, South Korea
| | - Yong-Deok Hong
- AMOREPACIFIC Research and Innovation Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, 17074, Gyeonggi-do, South Korea
| | - Jin Nam
- AMOREPACIFIC Research and Innovation Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, 17074, Gyeonggi-do, South Korea
| | - Won-Seok Park
- AMOREPACIFIC Research and Innovation Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, 17074, Gyeonggi-do, South Korea
| | - Soon-Mi Shim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul, 05006, South Korea
| |
Collapse
|
6
|
Song H, Lee J, Yi S, Kim WH, Kim Y, Namgoong B, Choe A, Cho G, Shin J, Park Y, Kim MS, Cho S. Red Ginseng Dietary Fiber Shows Prebiotic Potential by Modulating Gut Microbiota in Dogs. Microbiol Spectr 2023; 11:e0094923. [PMID: 37367492 PMCID: PMC10433987 DOI: 10.1128/spectrum.00949-23] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 06/09/2023] [Indexed: 06/28/2023] Open
Abstract
Red ginseng, widely used in traditional medicine for various conditions, imparts health benefits mainly by modulating the gut microbiota in humans. Given the similarities in gut microbiota between humans and dogs, red ginseng-derived dietary fiber may have prebiotic potential in dogs; however, its effects on the gut microbiota in dogs remain elusive. This double-blinded, longitudinal study investigated the impact of red ginseng dietary fiber on the gut microbiota and host response in dogs. A total of 40 healthy household dogs were randomly assigned to low-dose (n = 12), high-dose (n = 16), or control (n = 12) groups and fed a normal diet supplemented with red ginseng dietary fiber (3 g/5 kg body weight per day, 8 g/5 kg per day, or no supplement, respectively) for 8 weeks. The gut microbiota of the dogs was analyzed at 4 weeks and 8 weeks using 16S rRNA gene sequencing of fecal samples. Alpha diversity was significantly increased at 8 and 4 weeks in the low-dose and high-dose groups, respectively. Moreover, biomarker analysis showed that short-chain fatty acid producers such as Sarcina and Proteiniclasticum were significantly enriched, while potential pathogens such as Helicobacter were significantly decreased, indicating the increased gut health and pathogen resistance by red ginseng dietary fiber. Microbial network analysis showed that the complexity of microbial interactions was increased by both doses, indicating the increased stability of the gut microbiota. These findings suggest that red ginseng-derived dietary fiber could be used as a prebiotic to modulate gut microbiota and improve gut health in dogs. IMPORTANCE The canine gut microbiota is an attractive model for translational studies, as it responds to dietary interventions similarly to those in humans. Investigating the gut microbiota of household dogs that share the environment with humans can produce highly generalizable and reproducible results owing to their representativeness of the general canine population. This double-blind and longitudinal study investigated the impact of dietary fiber derived from red ginseng on the gut microbiota of household dogs. Red ginseng dietary fiber altered the canine gut microbiota by increasing diversity, enriching short-chain fatty acid-producing microbes, decreasing potential pathogens, and increasing the complexity of microbial interactions. These findings indicate that red ginseng-derived dietary fiber may promote canine gut health by modulating gut microbiota, suggesting the possibility of its use as a potential prebiotic.
Collapse
Affiliation(s)
- Hyokeun Song
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Junbum Lee
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Saehah Yi
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Woo-Hyun Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Yuna Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Beomkwan Namgoong
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Ahreum Choe
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Gunhee Cho
- Korea Ginseng Corporation, Daejeon, South Korea
| | - Jangmi Shin
- Korea Ginseng Corporation, Daejeon, South Korea
| | | | - Min Su Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
- Center for Veterinary Integrated Medicine Research, Seoul National University, Seoul, South Korea
| | - Seongbeom Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
- Center for Veterinary Integrated Medicine Research, Seoul National University, Seoul, South Korea
| |
Collapse
|
7
|
Kim WH, Kim JE, Kim S, Na Y, Hong YD, Choi J, Park WS, Shim SM. Bioconversion of BIOGF1K, a compound-K-rich fraction from ginseng root and its effect on epidermal barrier function. Heliyon 2023; 9:e14803. [PMID: 37025761 PMCID: PMC10070716 DOI: 10.1016/j.heliyon.2023.e14803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/10/2023] [Accepted: 03/17/2023] [Indexed: 03/29/2023] Open
Abstract
BIOGF1K, the ginseng root-based and hydrolyzed ginsenoside-rich fraction, is known to improve skin damage, but there are rare studies on the kinetic of ginsenosides in the epidermis and their effects on epidermal barrier function. The current study investigated the effect of BIOGF1K on epidermal barrier function and its kinetics on epidermal transport. HPLC and LC/MS were used to verify the ginsenosides and the metabolites of BIOGF1K. Human immortalized keratinocytes (HaCaT) and epidermis-dermis artificial skin were treated with BIOGF1K and their metabolites were analyzed by HPLC and LC/MS. The epidermal barrier function was evaluated by transepithelial electrical resistance (TEER). In BIOGF1K, ginsenoside Rg1, Rd, F1, F2, compound Mc, compound Y (CY), and compound K (CK) were detected and CK and CY were the most and second abundant ginsenosides. TEER of HaCaT with 100 and 200 μg/mL BIOGF1K treatment was significantly higher than the control during 600 min of incubation. CK was permeated to the epidermis in a time-dependent manner and its maximum transported rate was observed at 600 min. In the case of artificial skin, CY and CK were permeated to the epidermis-dermis skin as time-dependent. Also, 24 h after treatment of CY, CK was detected as 19.59% of CY. It was proposed that CY was hydrolyzed into CK while permeating the epidermis. Results from the current study suggest that bioconversion of BIOGF1K rich in CK effectively enhances epidermal barrier function and it could be a useful cosmeceutical to exhibit its functionality to the skin.
Collapse
Affiliation(s)
- Woo-Hyun Kim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 05006, South Korea
| | - Jeong-Eun Kim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 05006, South Korea
| | - Sehyun Kim
- AMOREPACIFIC Research and Innovation Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si 17074, Gyeonggi-do, South Korea
| | - Yongjoo Na
- AMOREPACIFIC Research and Innovation Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si 17074, Gyeonggi-do, South Korea
| | - Yong-Deok Hong
- AMOREPACIFIC Research and Innovation Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si 17074, Gyeonggi-do, South Korea
| | - Joonho Choi
- AMOREPACIFIC Research and Innovation Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si 17074, Gyeonggi-do, South Korea
| | - Won-Seok Park
- AMOREPACIFIC Research and Innovation Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si 17074, Gyeonggi-do, South Korea
- Corresponding author.
| | - Soon-Mi Shim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 05006, South Korea
- Corresponding author.
| |
Collapse
|
8
|
Lee S, An JU, Kim WH, Yi S, Lee J, Cho S. Different threats posed by two major mobilized colistin resistance genes - mcr-1.1 and mcr-3.1 - revealed through comparative genomic analysis. J Glob Antimicrob Resist 2023; 32:50-57. [PMID: 36572149 DOI: 10.1016/j.jgar.2022.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 12/06/2022] [Accepted: 12/19/2022] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVES Global spread of mobilized colistin resistance gene (mcr)-carrying Escherichia coli poses serious threats to public health. This study aimed to provide insights into different threats posed by two major mcr variants: mcr-1.1 and mcr-3.1. METHODS Genetic backgrounds and characteristics of mobile genetic elements carrying mcr-1.1 or mcr-3.1 in 74 (mcr)-carrying E. coli isolated from swine farms were analysed, and comparative genomic analysis was performed with the public sequence database. RESULTS The mcr-1.1 showed high horizontal transferability (6.30 logCFU/ml). Genetic background of mcr-1.1, including genetic cassette/plasmid, was transferred without insertion sequences (ISs) and/or multi-drug resistance (MDR) and highly shared across strains. The major mcr-1.1-cassette was "mcr-1.1-pap2", mainly encoded in IncI2 and IncX4. Mcr-3.1 exhibited relatively lower conjugation frequency (0.97 logCFU/ml). The mcr-3.1-cassette was flanked by IS26 and was highly variable across strains because of the insertion, deletion, or truncation of IS6100, IS4321, or IS5075. Near the mcr-3.1 cassette, MDR regions consisting of antimicrobial/heavy metal resistance genes were identified, which varied across strains. From the MCR3-E13 strain, a mcr-3.1-carrying IncHI2-fragment was integrated into the bacterial chromosome via IS26-mediated co-integration. To our knowledge, this was the first study to describe that a mcr-3.1-carrying plasmid could be inserted into the bacterial chromosome. CONCLUSIONS Based on high horizontal transferability, mcr-1.1 could play a major role on colistin resistance propagation. On the other hand, mcr-3.1 could be transmitted with MDR and have dual pathways mediated by plasmid transfer (horizontal transmission) and chromosomal insertion (vertical transmission), enabling it to proliferate stably despite its lower horizontal transferability.
Collapse
Affiliation(s)
- Soomin Lee
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea
| | - Jae-Uk An
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea
| | - Woo-Hyun Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea
| | - Saehah Yi
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea
| | - Junbum Lee
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea
| | - Seongbeom Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea.
| |
Collapse
|
9
|
Kim JE, Kim WH, Kim S, Na Y, Choi J, Hong YD, Park WS, Shim SM. Bioconversion of retinol and its cell barrier function in human immortalized keratinocytes cells and artificial epidermis-dermis skin. Exp Dermatol 2023. [PMID: 36843342 DOI: 10.1111/exd.14781] [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: 09/20/2022] [Revised: 01/05/2023] [Accepted: 02/23/2023] [Indexed: 02/28/2023]
Abstract
The current study aimed to characterize cellular uptake and bioconversion of retinol in fully differentiated human immortalized keratinocytes cells (HaCaT) and artificial skin by measuring the cell integrity of skin barriers, time-dependent transport of retinol, and bioconversion to its metabolites. The expression of epidermal differentiation related genes including Keratin 1 (KRT1), Keratin 10 (KRT10), and Involucrin (IVL) significantly increased in differentiated HaCaT. TEER of HaCaT did not decrease after incubating retinol compared to control (p > 0.05), indicating that retinol tends to maintain strength and integrity of epidermal barrier. TEER of artificial skin decreased treatment of retinol for 2 h, but it was recovered after 4 h. During retinol transport, metabolite was eluted at 13.37 and 13.82 min of basal medium of both keratinocytes and artificial skin, which was identified as retinoic acid by product ion of m/z 283.47. Retinol appeared to be accumulated in keratinocytes, but its uptake tends to be reduced in a time-dependent manner. Retinoic acid converted from retinol in keratinocytes was time dependently transported. In case of artificial skin, retinol was mostly found in apical at initial incubation time, but it was reduced during incubation for 24 h. Retinoic acid was time-dependently found in a basal, which was converted via epidermis-dermis. Results from the current study suggest that topical application of retinol to human skin optimal concentration and time exposure could maintain epidermal barrier function and promote skin function due to its remarkable bioconversion to retinoic acid in the epidermis-dermis.
Collapse
Affiliation(s)
- Jeong-Eun Kim
- Department of Food Science and Biotechnology, Sejong University, Seoul, South Korea
| | - Woo-Hyun Kim
- Department of Food Science and Biotechnology, Sejong University, Seoul, South Korea
| | - Sehyun Kim
- AMOREPACIFIC Research and Innovation Center, Yongin-si, South Korea
| | - Yongjoo Na
- AMOREPACIFIC Research and Innovation Center, Yongin-si, South Korea
| | - Joonho Choi
- AMOREPACIFIC Research and Innovation Center, Yongin-si, South Korea
| | - Yong-Deok Hong
- AMOREPACIFIC Research and Innovation Center, Yongin-si, South Korea
| | - Won-Seok Park
- AMOREPACIFIC Research and Innovation Center, Yongin-si, South Korea
| | - Soon-Mi Shim
- Department of Food Science and Biotechnology, Sejong University, Seoul, South Korea
| |
Collapse
|
10
|
Woo J, Guk JH, Yi S, Lee J, Song H, Kim WH, Cho S. Effect of biofilm formation by antimicrobial-resistant gram-negative bacteria in cold storage on survival in dairy processing lines. Int J Food Microbiol 2023; 386:110019. [PMID: 36436412 DOI: 10.1016/j.ijfoodmicro.2022.110019] [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: 07/08/2022] [Revised: 10/22/2022] [Accepted: 11/13/2022] [Indexed: 11/20/2022]
Abstract
Antimicrobial-resistant gram-negative bacteria in dairy products can transfer antimicrobial resistance to gut microbiota in humans and can adversely impact the product quality. In this study, we aimed to investigate their distribution in dairy processing lines and evaluate biofilm formation and heat tolerance under dairy processing line-like conditions. Additionally, we compared the relative expression of general and heat stress-related genes as well as spoilage-related gene between biofilm and planktonic cells under consecutive stresses, similar to those in dairy processing lines. Most species of gram-negative bacteria isolated from five different dairy processing plants were resistant to one or more antimicrobials. Biofilm formation by the bacteria at 5 °C increased with the increase in exposure time. Moreover, cells in biofilms remained viable under heat treatment, whereas all planktonic cells of the selected strains died. The expression of heat-shock-related genes significantly increased with heat treatment in the biofilms but mostly decreased in the planktonic cells. Thus, biofilm formation under raw milk storage conditions may improve the tolerance of antimicrobial-resistant gram-negative bacteria to pasteurization, thereby increasing their persistence in dairy processing lines and products. Furthermore, the difference in response to heat stress between biofilm and planktonic cells may be attributed to the differential expression of heat stress-related genes. Therefore, this study contributes to the understanding of how gram-negative bacteria persist under consecutive stresses in dairy processing procedures and the potential mechanism underlying heat tolerance in biofilms.
Collapse
Affiliation(s)
- JungHa Woo
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, South Korea
| | - Jae-Ho Guk
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, South Korea
| | - Saehah Yi
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, South Korea
| | - Junbum Lee
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, South Korea
| | - Hyokeun Song
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, South Korea
| | - Woo-Hyun Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, South Korea
| | - Seongbeom Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, South Korea.
| |
Collapse
|
11
|
Lee Y, Shin JH, Kim BS, Kim WH, Kook H, Park HC. Influence of concomitant percutaneous transluminal angioplasty with percutaneous coronary intervention on outcomes in patients with stable lower extremity artery disease. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Patients with stable lower extremity artery diseases (LEAD) frequently present with coronary artery diseases; thus, concomitant percutaneous transluminal angioplasty (PTA) at the time of percutaneous coronary intervention (PCI) is often performed. We investigated the influence of concomitant PTA on both cardiovascular (CV) and limb outcomes in the Korean National Health Insurance Service registry.
Methods
Among 78,185 patients undergoing PCI between 2012 and 2015, 6,563 patients (279 for the PTA+PCI group vs. 6,284 for the PCI group) suffering from stable LEAD without limb ischemia were included. Major adverse CV events (MACEs) were defined as a composite of CV death, myocardial infarction (MI) and coronary revascularization. Patients were followed for at least 3 years.
Results
After 1:5 propensity score matching was conducted, 279 patients in the PTA+PCI group and 1,385 patients in the PCI group were compared. The risk of all-cause death was higher in the PTA+PCI group than in the PCI group, whereas the risks of MACE, MI, revascularization, stroke, CV death and bleeding event were not different between the 2 groups in the matched cohort. In contrast, the risks of end-stage renal diseases and unfavorable limb outcomes were higher in the PTA+PCI group than in the PCI group (Figure 1). Mediation analyses revealed that amputation and repeat Percutaneous transluminal angioplasty after discharge significantly mediated the association between the concomitant PTA and all-cause death (Figure 2).
Conclusions
CPTA at the time of PCI is not associated with an increased risk of CV events but may increase the risk of all-cause death by increasing unfavorable renal and limb outcomes in patients with stable LEAD.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- Y Lee
- Hanyang University, Division of Cardiology, Department of internal medicine , Seoul , Korea (Republic of)
| | - J H Shin
- Hanyang University, Division of Cardiology, Department of internal medicine , Seoul , Korea (Republic of)
| | - B S Kim
- Hanyang University Guri Hospital , Seoul , Korea (Republic of)
| | - W H Kim
- Hanyang University, Division of Cardiology, Department of internal medicine , Seoul , Korea (Republic of)
| | - H Kook
- Hanyang University, Division of Cardiology, Department of internal medicine , Seoul , Korea (Republic of)
| | - H C Park
- Hanyang University, Division of Cardiology, Department of internal medicine , Seoul , Korea (Republic of)
| |
Collapse
|
12
|
Song H, Yi S, Kim WH, Guk JH, Ha M, Kwak I, Han J, Yeon SC, Cho S. Environmental Perturbations during the Rehabilitation of Wild Migratory Birds Induce Gut Microbiome Alteration and Antibiotic Resistance Acquisition. Microbiol Spectr 2022; 10:e0116322. [PMID: 35730950 PMCID: PMC9430529 DOI: 10.1128/spectrum.01163-22] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 06/04/2022] [Indexed: 11/21/2022] Open
Abstract
Wild migratory birds are essential for sustaining healthy ecosystems, but the effects of a rehabilitation period on their gut microbiomes are still unclear. Here, we performed longitudinal sampling, 16S rRNA sequencing, and antibiotic resistance monitoring of the gut microbiome of six species of wild migratory birds protected as natural monuments in South Korea that are subject to short- or long-term rehabilitation periods. Overall, gut microbiome diversity was significantly decreased in the early stages of rehabilitation, and it did not recover to a level comparable to that of wild birds. Moreover, while the abundance of short-chain fatty acid-producing bacteria decreased, that of zoonotic pathogens increased, indicating rehabilitation-induced dysbiosis. The metabolic pathways involved in the degradation of aromatic pollutants were significantly downregulated, suggesting the depletion of pollutant-degrading microorganisms. Antibiotic resistance of Escherichia coli significantly increased during rehabilitation, particularly ciprofloxacin and tetracycline resistance, and seven of the rehabilitated wild birds acquired multidrug resistance. The diet and habitat changes experienced by wild migratory birds during rehabilitation may have induced the observed gut microbiome dysbiosis and acquisition of antibiotic resistance. These rehabilitation-induced alterations might affect the adaptability of wild birds to their natural environments and contribute to the spread of antibiotic resistance after their release. IMPORTANCE Wild migratory birds are key for ecosystem health but highly sensitive to anthropogenic activities. Therefore, wild migratory birds often undergo rehabilitation to prevent species extinction or biodiversity monitoring. However, the impact of rehabilitation on the gut microbiome of wild migratory birds, which is closely associated with host fitness, remains unclear. For the migratory bird species considered natural monuments in South Korea evaluated here, such impacts could include rehabilitation-induced gut microbiome dysbiosis and acquisition of antibiotic resistance, with possible repercussions on the adaptability of wild birds and spread of antibiotic resistance in the environment after their release. Therefore, the dynamics of the gut microbiome and antibiotic resistance should be considered for implementing sustainable rehabilitation strategies.
Collapse
Affiliation(s)
- Hyokeun Song
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Saehah Yi
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Woo-Hyun Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Jae-Ho Guk
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Minjong Ha
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
- Seoul Wildlife Center, Seoul, South Korea
| | - Insik Kwak
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
- Seoul Wildlife Center, Seoul, South Korea
| | - Janghee Han
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
- Seoul Wildlife Center, Seoul, South Korea
| | - Seong-Chan Yeon
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
- Seoul Wildlife Center, Seoul, South Korea
| | - Seongbeom Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
- Center for Veterinary Integrated Medicine Research, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| |
Collapse
|
13
|
Lee S, An JU, Woo J, Song H, Yi S, Kim WH, Lee JH, Ryu S, Cho S. Prevalence, Characteristics, and Clonal Distribution of Escherichia coli Carrying Mobilized Colistin Resistance Gene mcr-1.1 in Swine Farms and Their Differences According to Swine Production Stages. Front Microbiol 2022; 13:873856. [PMID: 35602044 PMCID: PMC9121016 DOI: 10.3389/fmicb.2022.873856] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/04/2022] [Indexed: 11/25/2022] Open
Abstract
Global spread of Escherichia coli strains carrying the mobilized colistin resistance gene mcr-1.1 (MCR1-EC) poses serious threats to public health. Colistin has been generally prescribed for swine colibacillosis, having made swine farms as major reservoirs of MCR1-EC. The present study aimed to understand characteristic differences of MCR1-EC, including prevalence, antimicrobial resistance, and virulence, according to swine production stages. In addition, genetic relatedness was evaluated between MCR1-EC isolated from this study as well as pig-, human-, and chicken-derived strains published in the National Center for Biotechnology Information (NCBI), based on the multi-locus sequence types (MLSTs) and whole-genome sequences (WGS). Individual fecal samples (n = 331) were collected from asymptomatic weaning-piglets, growers, finishers, and sows from 10 farrow-to-finishing farms in South Korea between 2017 and 2019. The weighted prevalence of MCR1-EC was 11.6% (95% CI: 8.9%–15.0%, 55/331), with the highest prevalence at weaning stage. The 96.2% of MCR1-EC showed multi-drug resistance. Notably, weaning stage-derived MCR1-EC showed higher resistance rates (e.g., against extended-spectrum β-lactams or quinolones) than those from other stages. MCR1-EC with virulence advantages (e.g., intestinal/extraintestinal pathogenic E. coli or robust biofilm formation) were identified from all pig stages, accounting for nearly half of the total strains. WGS-based in-depth characterization showed that intestinal pathogenic MCR1-EC harbored multi-drug resistance and multiple virulence factors, which were highly shared between strains isolated from pigs of different stages. The clonal distribution of MCR1-EC was shared within swine farms but rarely across farms. The major clonal type of MCR1-EC from swine farms and NCBI database was ST10-A. Core genomes of MCR1-EC isolated from individuals within closed environments (same farms or human hospitals) were highly shared (genetic distance < 0.01), suggesting a high probability of clonal expansion of MCR1-EC within closed environments such as livestock husbandry. To the best of our knowledge, this is the first study to analyze the differences in the characteristics and clonal distribution of MCR1-EC according to production stages in swine farms, an important reservoir of MCR1-EC. Our results highlight the need to establish MCR1-EC control plans in swine farms based on an in-depth understanding of MCR1-EC characteristics according to swine production stages, focusing especially on the weaning stages.
Collapse
Affiliation(s)
- Soomin Lee
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Jae-Uk An
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - JungHa Woo
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Hyokeun Song
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Saehah Yi
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Woo-Hyun Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Ju-Hoon Lee
- Department of Food and Animal Biotechnology, Seoul National University, Seoul, South Korea
- Department of Agricultural Biotechnology, Center for Food Bioconvergence, Seoul National University, Seoul, South Korea
| | - Sangryeol Ryu
- Department of Food and Animal Biotechnology, Seoul National University, Seoul, South Korea
- Department of Agricultural Biotechnology, Center for Food Bioconvergence, Seoul National University, Seoul, South Korea
| | - Seongbeom Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
- *Correspondence: Seongbeom Cho,
| |
Collapse
|
14
|
Oh JH, Lee CY, Kim JE, Kim WH, Seo JW, Lim TG, Lee SY, Chung JO, Hong YD, Kim WG, Yoo SJ, Shin KS, Shim SM. Effect of Characterized Green Tea Extraction Methods and Formulations on Enzymatic Starch Hydrolysis and Intestinal Glucose Transport. J Agric Food Chem 2021; 69:15208-15217. [PMID: 34881881 DOI: 10.1021/acs.jafc.1c05931] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The purpose of the current study was to investigate the effect of various characterized green tea extracts (GTEs) according to extraction methods on enzymatic starch hydrolysis and intestinal glucose transport. Codigestion of wheat starch with water extract (WGT) or ethanol extract formulated with green tea polysaccharides and flavonols (CATEPLUS) produced 3.4-3.5 times higher resistant starch (RS) than wheat starch only. Its microstructures were changed to spherical shapes and smooth surfaces as shown by scanning electron microscopy (SEM) results. According to Fourier transform infrared (FT-IR) spectra, the absorption peak of O-H stretching was red-shifted in WGT or CATEPLUS. The results confirmed that hydrogen bonds were formed between starch granules and polysaccharides in WGT or CATEPLUS. Intestinal glucose transport subsequently measured after in vitro digestion was mostly suppressed in CATEPLUS. Gene expression of the glucose transporter protein, particularly SGLT1, was significantly inhibited by addition of CATEPLUS (p < 0.05). Results from the current study suggest that co-intake of green tea extracts formulated with green tea polysaccharides and flavonols could be a potentially useful means to delay blood glucose absorption when consuming starchy foods.
Collapse
Affiliation(s)
- Jeong-Ho Oh
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, Republic of Korea
| | - Chan-Yang Lee
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, Republic of Korea
| | - Jeong-Eun Kim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, Republic of Korea
| | - Woo-Hyun Kim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, Republic of Korea
| | - Ji-Won Seo
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, Republic of Korea
| | - Tae-Gyu Lim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, Republic of Korea
| | - Su-Yong Lee
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, Republic of Korea
| | - Jin-Oh Chung
- AMOREPACIFIC R&D Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17074, Republic of Korea
| | - Yong-Deog Hong
- AMOREPACIFIC R&D Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17074, Republic of Korea
| | - Wan-Gi Kim
- AMOREPACIFIC R&D Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17074, Republic of Korea
| | - Soo-Jin Yoo
- Bolak Company Ltd., 720-37, Chorok-ro, Yanggam-myeon, Hwaseong-si, Gyeonggi-do 18628, Republic of Korea
| | - Kwang-Soon Shin
- Department of Food Science and Biotechnology, Kyonggi University, 154-42 Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea
| | - Soon-Mi Shim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, Republic of Korea
| |
Collapse
|
15
|
Park SK, Park DN, Kim YW, Yoo S, Kim WH, Lim YJ, Park JS, Jun JK, Kim JT. Colloid coload versus crystalloid coload to prevent maternal hypotension in women receiving prophylactic phenylephrine infusion during caesarean delivery: a randomised controlled trial. Int J Obstet Anesth 2021; 49:103246. [PMID: 35012809 DOI: 10.1016/j.ijoa.2021.103246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 11/16/2021] [Accepted: 12/12/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND The optimal fluid strategy to prevent maternal hypotension during caesarean delivery remains unclear. This study aim was to compare the incidence of post-spinal anaesthesia hypotension in women receiving either colloid or crystalloid coload in the setting of prophylactic phenylephrine infusion during caesarean delivery. METHODS Healthy mothers undergoing elective caesarean delivery under spinal anaesthesia were randomised to receive a rapid intravenous coload with 6% hydroxyethyl starch 130/0.4 10 mL/kg (colloid group) or balanced crystalloid solution (Plasma Solution A) 10 mL/kg (crystalloid group) during spinal anaesthesia. All women had a prophylactic phenylephrine infusion initiated at 25 μg/min immediately after the subarachnoid block and titrated to systolic blood pressure using a standardised protocol. The primary outcome was the incidence of hypotension (systolic blood pressure <80% of baseline) until delivery. RESULTS The incidence of hypotension was 50% in the colloid group and 62% in the crystalloid group (absolute difference, -12% [95% CI -33% to 9%]; relative risk, 0.8 [95% CI 0.56 to 1.14]; P=0.314). No significant difference between groups was found in the number of hypotensive episodes (median 0.5 [IQR 0 to 1] vs 1 [0 to 2], P=0.132) or phenylephrine dose (675 [IQR 425 to 975] μg vs 750 [625 to 950] μg, P=0.109). The incidence of severe hypotension, symptomatic hypotension, bradycardia, nausea, and the neonatal outcomes were not significantly different. CONCLUSIONS This study found no benefit of colloid coload compared with crystalloid coload for preventing maternal hypotension in the presence of prophylactic phenylephrine infusion during caesarean delivery.
Collapse
Affiliation(s)
- S-K Park
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - D-N Park
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Y-W Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - S Yoo
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - W H Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Y-J Lim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - J S Park
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - J K Jun
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - J-T Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
| |
Collapse
|
16
|
Lee Y, Shin J, Shin JH, Kim HJ, Ryu MH, Park HC, Lim HY, Park JK, Heo R, Kim WH. Simulation and validation for count-based binary decision of target blood pressure achievement in home blood pressure monitoring data analysis for clinical practice. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Home blood pressure monitoring (HBPM) is a useful tool to identify hypertension and to decide whether a patient's blood pressure (BP) is controlled. The use of automatized oscillometric BP measurement devices has become increasingly popular with help of information technology and internet of things to the devices. However, applying HBPM to daily clinical practices is still challenging, because most patients with hypertension are in age groups not familiar to digital devices and internet and high BP criteria using average home BP values are often useless in outpatient clinics without easily accessible average BP calculation tools. Therefore, we developed a simple and straightforward method to interpret HBPM through counts of BP ≥135/85 mmHg.
Methods
We simulated 400 cases of HBPM using a random number generator function in statistical software. The simulated average home systolic BP (SBP) and its standard deviation (SD) were 125±15 mmHg and 12±5 mmHg and the number of HBP readings was 24 times. The simulated diastolic BP (DBP) was randomly selected to 50–75% of the SBP. The validation of the binary interpretation method was conducted using actual HBPM data from 386 subjects in a rural area of South Korea. Receiver operating characteristics curve analysis was conducted, and linear regression and logarithmic models were fitted between the numbers of home BP ≥135/85 mmHg and mean BP. Hypertension was defined with average home BP ≥135/85 mmHg.
Results
In the simulated cohort, hypertension was presented in 197 cases (49.3%). The C-index of the numbers of BP readings ≥135/85 mmHg was 0.994 (95% confidence interval [CI] 0.990–0.998), and ≥12 of 24 BP readings ≥135/85 mmHg showed a sensitivity of 95.4%, a specificity of 95.1% and an accuracy of 95.3% for the diagnosis of hypertension. In validation cohort, the numbers of home BP measurements varied from 8 to 81 times. The validation cohort similarly showed that the C-index of the ratio between the number of high BP readings (≥135/85 mmHg) to the number of BP measurements (R-NHBP/NBP) was 0.985 (95% CI, 0.976–0.994) and the best accuracy was shown at R-NHBP/NBP of ≥0.45. R-NHBP/NBP of ≥0.5 showed a sensitivity of 0.957, a specificity of 0.907 and an accuracy of 0.927. The accuracy of the R-NHBP/NBP of ≥0.5 decreased as SD and the range of SBP increased, whereas it did not change with the number of measurements (Figure 1). R-NHBP/NBP <0.2 predicted normotension and R-NHBP/NBP >0.8 predicted hypertension in 95% confidence. Mean widths of the 95 prediction intervals for the average SBP and DBP were 18.2 mmHg and 12.6 mmHg, respectively (Figure 2).
Conclusion
Counting the number of BP ≥135/85 mmHg can provide accurate assessments for the BP levels. R-NHBP/NBP of ≥0.5 is a simple and accurate marker of high BP in HBPM, and R-NHBP/NBP could be a useful tool to assess BP levels in patients practicing HBPM.
Funding Acknowledgement
Type of funding sources: None. Figure 1Figure 2
Collapse
Affiliation(s)
- Y Lee
- Hanyang University Guri Hospital, Seoul, Korea (Republic of)
| | - J Shin
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J H Shin
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - H J Kim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - M H Ryu
- Hanyang University Guri Hospital, Seoul, Korea (Republic of)
| | - H C Park
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - H Y Lim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J K Park
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - R Heo
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - W H Kim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| |
Collapse
|
17
|
Lee S, An JU, Guk JH, Song H, Yi S, Kim WH, Cho S. Prevalence, Characteristics and Clonal Distribution of Extended-Spectrum β-Lactamase- and AmpC β-Lactamase-Producing Escherichia coli Following the Swine Production Stages, and Potential Risks to Humans. Front Microbiol 2021; 12:710747. [PMID: 34367116 PMCID: PMC8334370 DOI: 10.3389/fmicb.2021.710747] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 06/28/2021] [Indexed: 11/30/2022] Open
Abstract
The worldwide spread of extended spectrum β-lactamase (ESBL)- and AmpC β-lactamase (AmpC)-producing Escherichia coli poses serious threats to public health. Swine farms have been regarded as important reservoirs of ESBL/AmpC-EC. This study aimed to determine the prevalence, ESBL/AmpC types, and clonal distribution of ESBL/AmpC-EC from swine farms and analyze the difference according to the swine production stages. In addition, we evaluated the potential risks of swine ESBL/AmpC-EC clones to humans. Individual fecal samples (n = 292) were collected from weaning, growing, finishing, and pregnant pigs in nine swine farms of South Korea between July 2017 and March 2020. In total, 161 ESBL/AmpC-EC isolates were identified (55.1%), with the highest prevalence detected in the weaning stage (86.3%). The dominant ESBL and AmpC types were CTX-M-55 (69.6%) and CMY-2 (4.3%), respectively. CTX-M found in all production stages, while CMY was only found in growing and finishing stages. In the conjugation assay, the high transferability of CTX-M gene (55.8%) was identified, while the transfer of CMY gene was not identified. The major clonal complexes (CCs) were CC101-B1 (26.8%), CC10-A (8.7%), and CC648-F (2.9%). There was similarity in clonal distribution between different swine production stages within swine farms, estimated using the k-means analysis, which suggested a clonal transmission between the different swine stages. Among swine ESBL/AmpC-EC sequence types (STs), seven STs (ST101, ST10, ST648, ST457, ST410, ST617, and ST744) were common with the human ESBL/AmpC-EC, which registered in National Center for Biotechnology Information database. The clonal population structure analysis based on the virulence factor (VF) presented that swine ESBL/AmpC-EC clones, especially ST101-B1, harbored a highly virulent profile. In conclusion, ESBL/AmpC-EC was distributed throughout the swine production stages, with the highest prevalence in the weaning stage. The CTX-M was present in all stages, while CMY was mostly found in growing-finishing stages. The swine ESBL/AmpC-EC was identified to harbor shared clone types with human ESBL/AmpC-EC and a virulent profile posing potential risk to humans. Considering the possibility of genetic and clonal distribution of ESBL/AmpC-EC among swine production stages, this study suggests the need for strategies considering the production system to control the prevalence of ESBL/AmpC-EC in swine farms.
Collapse
Affiliation(s)
- Soomin Lee
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Jae-Uk An
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Jae-Ho Guk
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Hyokeun Song
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Saehah Yi
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Woo-Hyun Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Seongbeom Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| |
Collapse
|
18
|
Guk JH, Song H, Yi S, An JU, Lee S, Kim WH, Cho S. Hyper-Aerotolerant Campylobacter coli From Swine May Pose a Potential Threat to Public Health Based on Its Quinolone Resistance, Virulence Potential, and Genetic Relatedness. Front Microbiol 2021; 12:703993. [PMID: 34381431 PMCID: PMC8352582 DOI: 10.3389/fmicb.2021.703993] [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: 05/01/2021] [Accepted: 06/24/2021] [Indexed: 01/05/2023] Open
Abstract
Campylobacter, a major foodborne pathogen, is susceptible to oxygen. Recently, aerotolerant Campylobacter with enhanced tolerance to aerobic stress has become a major concern in food safety. However, the aerotolerance of Campylobacter coli from pigs has not been studied extensively. Here, we sought to investigate the prevalence of C. coli across multiple swine groups in farms, including weaning, growing, and fattening pigs in production stages and pregnant sows. Additionally, we analyzed C. coli aerotolerance, quinolone resistance, virulence potential, and multilocus sequence typing (MLST) genotypes. Finally, we compared the characteristics of C. coli according to the aerotolerance levels. In total, we obtained 124 (66.3%) C. coli isolates from 187 swine fecal samples across six swine farms. The pathogen was prevalent in weaning (45.5%), growing (68.3%), and fattening (75.4%) pigs, and pregnant sows (66.7%). Hyper-aerotolerant HAT C. coli (13.7% of 124 isolates) was present in all swine groups, with the highest proportion in the pregnant sows (27.3%). All HAT isolates possessed diverse virulence-related genes such as flaA, cadF, pldA, ceuE, and cdtA. All C. coli isolates were resistant to quinolones, and 12 (10%) presented high-level ciprofloxacin resistance (MIC ≥ 32 μg/mL). The proportion of C. coli isolates with a high-level ciprofloxacin resistance was the highest in HAT C. coli (18.8%). Furthermore, six MLST sequence types (STs) (ST827, ST830, ST854, ST1016, ST1068, and ST1096) of swine-derived C. coli were in common with human-derived C. coli (PubMLST). The proportion of C. coli belonging to such shared STs at each aerotolerance level was the highest in HAT C. coli (HAT vs. oxygen-sensitive; OR = 3.13). In conclusion, quinolone resistance of C. coli may be distributed throughout in all swine groups in farms. HAT C. coli is likely to remain in pig farms and re-infect other pigs in the farms. Furthermore, swine-derived HAT C. coli could be transmitted to humans easily through the food chain owing to its aerotolerance, and it could pose a threat to public health owing to its high-level ciprofloxacin resistance and virulence. This study highlights the need to develop management practices that prevent the transmission of swine-derived HAT C. coli to humans.
Collapse
Affiliation(s)
- Jae-Ho Guk
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Hyokeun Song
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Saehah Yi
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Jae-Uk An
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Soomin Lee
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Woo-Hyun Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Seongbeom Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| |
Collapse
|
19
|
Kim WH, Cho S. Estimation of the Basic Reproduction Numbers of the Subtypes H5N1, H5N8, and H5N6 During the Highly Pathogenic Avian Influenza Epidemic Spread Between Farms. Front Vet Sci 2021; 8:597630. [PMID: 34250054 PMCID: PMC8264784 DOI: 10.3389/fvets.2021.597630] [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: 08/21/2020] [Accepted: 05/27/2021] [Indexed: 11/13/2022] Open
Abstract
It is important to understand pathogen transmissibility in a population to establish an effective disease prevention policy. The basic reproduction number (R 0) is an epidemiologic parameter for understanding the characterization of disease and its dynamics in a population. We aimed to estimate the R 0 of the highly pathogenic avian influenza (HPAI) subtypes H5N1, H5N8, and H5N6, which were associated with nine outbreaks in Korea between 2003 and 2018, to understand the epidemic transmission of each subtype. According to HPAI outbreak reports of the Animal and Plant Quarantine Agency, we estimated the generation time by calculating the time of infection between confirmed HPAI-positive farms. We constructed exponential growth and maximum likelihood (ML) models to estimate the basic reproduction number, which assumes the number of secondary cases infected by the index case. The Kruskal-Wallis test was used to analyze the epidemic statistics between subtypes. The estimated generation time of H5N1, H5N8, and H5N6 were 4.80 days [95% confidence interval (CI) 4.23-5.38] days, 7.58 (95% CI 6.63-8.46), and 5.09 days (95% CI 4.44-5.74), respectively. A pairwise comparison showed that the generation time of H5N8 was significantly longer than that of the subtype H5N1 (P = 0.04). Based on the ML model, R 0 was estimated as 1.69 (95% CI 1.48-2.39) for subtype H5N1, 1.60 (95%CI 0.97-2.23) for subtype H5N8, and 1.49 (95%CI 0.94-2.04) for subtype H5N6. We concluded that R 0 estimates may be associated with the poultry product system, climate, species specificity based on the HPAI virus subtype, and prevention policy. This study provides an insight on the transmission and dynamics patterns of various subtypes of HPAI occurring worldwide. Furthermore, the results are useful as scientific evidence for establishing a disease control policy.
Collapse
Affiliation(s)
| | - Seongbeom Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| |
Collapse
|
20
|
Kim WH, Bae SH, Cho S. Spatiotemporal Dynamics of Highly Pathogenic Avian Influenza Subtype H5N8 in Poultry Farms, South Korea. Viruses 2021; 13:v13020274. [PMID: 33579009 PMCID: PMC7916766 DOI: 10.3390/v13020274] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 11/16/2022] Open
Abstract
Highly pathogenic avian influenza (HPAI), a zoonotic disease, is a major threat to humans and poultry health worldwide. In January 2014, HPAI virus subtype H5N8 first infected poultry farms in South Korea, and 393 outbreaks, overall, were reported with enormous economic damage in the poultry industry. We analyzed the spatiotemporal distribution of HPAI H5N8 outbreaks in poultry farms using the global and local spatiotemporal interaction analyses in the first (January to July 2014) and second (September 2014 to June 2015) outbreak waves. The space–time K-function analyses revealed significant interactions within three days and in an over-40 km space–time window between the two study periods. The excess risk attributable value (D0) was maintained despite the distance in the case of HPAI H5N8 in South Korea. Eleven spatiotemporal clusters were identified, and the results showed that the HPAI introduction was from the southwestern region, and spread to the middle region, in South Korea. This spatiotemporal interaction indicates that the HPAI epidemic in South Korea was mostly characterized by short period transmission, regardless of the distance. This finding supports strict control strategies such as preemptive depopulation, and poultry movement tracking. Further studies are needed to understand HPAI disease transmission patterns.
Collapse
Affiliation(s)
- Woo-Hyun Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Korea;
| | - Sun Hak Bae
- Department of Geography Education, Kangwon National University, Chuncheon 24341, Korea;
| | - Seongbeom Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Korea;
- Correspondence: ; Tel.: +82-2-880-1270
| |
Collapse
|
21
|
Song H, Kim J, Guk JH, Kim WH, Nam H, Suh JG, Seong JK, Cho S. Metagenomic Analysis of the Gut Microbiota of Wild Mice, a Newly Identified Reservoir of Campylobacter. Front Cell Infect Microbiol 2021; 10:596149. [PMID: 33604305 PMCID: PMC7884769 DOI: 10.3389/fcimb.2020.596149] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 12/17/2020] [Indexed: 12/12/2022] Open
Abstract
Campylobacter, the most common etiologic agent of zoonotic gastroenteritis in humans, is present in many reservoirs including livestock animals, wildlife, soil, and water. Previously, we reported a novel Campylobacter jejuni strain SCJK02 (MLST ST-8388) from the gut of wild mice (Micromys minutus) using culture-dependent methods. However, due to fastidious growth conditions and the presence of viable but non-culturable Campylobacter spp., it is unclear whether M. minutus is a Campylobacter reservoir. This study aimed to: 1) determine the distribution and proportion of Campylobacter spp. in the gut microbiota of wild mice using culture-independent methods and 2) investigate the gut microbiota of wild mice and the relationship of Campylobacter spp. with other gut microbes. The gut microbiota of 38 wild mice captured from perilla fields in Korea and without any clinical symptoms (18 M. minutus and 20 Mus musculus) were analyzed. Metagenomic analysis showed that 77.8% (14 of 18) of the captured M. minutus harbored Campylobacter spp. (0.24–32.92%) in the gut metagenome, whereas none of the captured M. musculus carried Campylobacter spp. in their guts. Notably, 75% (6 of 8) of M. minutus determined to be Campylobacter-negative using culture-dependent methods showed a high proportion of Campylobacter through metagenome analysis. The results of metagenome analysis and the absence of clinical symptoms suggest that Campylobacter may be a component of the normal gut flora of wild M. minutus. Furthermore, linear discriminant analysis (LDA) showed that Campylobacter was the most enriched genus in the gut microbiota of M. minutus (LDA score, 5.37), whereas Lactobacillus was the most enriched genus in M. musculus (LDA score, −5.96). The differences in the presence of Campylobacter between the two species of wild mice may be attributed to the differential abundance of Campylobacter and Lactobacillus in their respective gut microbiota. In conclusion, the results indicate that wild M. minutus may serve as a potential Campylobacter reservoir. This study presents the first metagenomics analysis of the M. minutus gut microbiota to explore its possible role as an environmental Campylobacter reservoir and provides a basis for future studies using culture-independent methods to determine the role of environmental reservoirs in Campylobacter transmission.
Collapse
Affiliation(s)
- Hyokeun Song
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Junhyung Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Jae-Ho Guk
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Woo-Hyun Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Hajin Nam
- Department of Medical Genetics, College of Medicine, Hallym University, Chuncheon, South Korea
| | - Jun Gyo Suh
- Department of Medical Genetics, College of Medicine, Hallym University, Chuncheon, South Korea
| | - Je Kyung Seong
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Seongbeom Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| |
Collapse
|
22
|
Kim WH, Min KD, Cho SI, Cho S. The Relationship Between Dog-Related Factors and Owners' Attitudes Toward Pets: An Exploratory Cross-Sectional Study in Korea. Front Vet Sci 2020; 7:493. [PMID: 33015137 PMCID: PMC7461997 DOI: 10.3389/fvets.2020.00493] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 06/30/2020] [Indexed: 11/19/2022] Open
Abstract
In Korea, there is a need for research on human-animal relationships because of an increase in the number of companion animals and the positive changes in public perception toward them. Few studies have examined these changes. This epidemiological study investigates the characteristics of Korean dog owners and their pet dogs and identifies the owner- and dog-dependent factors that influence the owners' attitudes toward pets. We conducted a cross-sectional study of dog owners by asking them to complete a Pet Attitude Scale-based questionnaire about their dogs and themselves. The participants included 654 young adults between 19 and 39 years of age who lived in Seoul and owned dogs. We found that most dogs were owned by single, educated, high-income men who preferred small purebred dogs. Most were also likely to underestimate their dog's body condition score (BCS). The multivariable logistic regression (odds ratio, OR) and the multiple linear regression (unstandardized coefficients, B) models suggested that positive pet attitudes were associated with nine factors: overweight (OR = 2.68, B = 5.28) or a normal BCS (OR = 2.09, B = 5.58), having a medical history of related diseases (OR = 2.36, B = 6.38) and vaccination (OR = 2.10, B = 6.22), buying the pet dog (OR = 0.60, B = -3.85), having a small dog (≤10 kg) (OR = 1.66), visiting the veterinarian frequently (OR = 1.08, B = 0.39), spending more time with the dog (OR = 1.23, B =1.32), and keeping other species in the house (B = -4.27). This study is the first to identify the relationships between owner- and dog-dependent factors and pet owner attitude toward pets, all within a Korean cultural context. This study highlights the factors associated with the development of relationships between pet dogs and their owners. The exploratory study is novel because it examines pet ownership in the context of the Korean culture; previous pet ownership studies were set in the West and are analyzed with Western cultural values in mind.
Collapse
Affiliation(s)
- Woo-Hyun Kim
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Kyung-Duk Min
- Department of Public Health Science, Graduate School of Public Health, Seoul National University, Seoul, South Korea
| | - Sung-il Cho
- Department of Public Health Science, Graduate School of Public Health, Seoul National University, Seoul, South Korea
- Institute of Health and Environment, Seoul National University, Seoul, South Korea
| | - Seongbeom Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| |
Collapse
|
23
|
Park SH, Jung KT, Choi YJ, Kim WH, Chin JY, Kang KW. P643 A case of Fabry cardiomyopathy refractory to enzyme replacement therapy; the importance of early diagnosis and treatment in Fabry cardiomyopathy. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
A 56-year-old male was referred in order to identify Fabry disease after his older brother was confirmed as Fabry disease of cardiac variant type. He had been treated with hypertrophic cardiomyopathy (HCMP) five years ago. He didn’t have a history of hypertension. Blood pressure was 118/65 mmHg and pulse rate was 75 beats per minute. Serum creatinine was 1.07 mg/dl and estimated glomerular filtration rate was 75.2 ml/min. Cardiac enzymes including CK-MB and troponin-T were normal. There was no proteinuria on urinalysis. A 12-leads electrocardiogram revealed normal sinus rhythm with severe left ventricular hypertrophy (LVH) and strain pattern. Transthoracic echocardiogram (TTE) showed diffuse severe concentric hypertrophy of the left ventricle (LV) of an average ventricular wall thickness of 17 mm with normal systolic function (left ventricular ejection fraction (LVEF), 56%). TTE also revealed left ventricular outflow tract obstruction with systolic anterior motion of mitral valve. Right ventricle (RV) was also hypertrophied (RV free wall thickness, 7mm). Also, echocardiography revealed findings of diastolic dysfunction; left atrial enlargement, mitral inflow of a pseudo-normal pattern on pulsed wave Doppler image and an increased left ventricular filling pressure on tissue Doppler image (E/e’=20). Cardiac magnetic resonance imaging (MRI) revealed diffuse LV and RV hypertrophy and preserved LV systolic function with hypokinesia of mid-septal LV wall. Delayed hyper-enhancement (DHE) was not found within entire myocardium. A coronary CT angiography was performed because of regional wall motion abnormality but did not show any significant stenoses. He was confirmed as Fabry disease with the same genetic mutation as his brother. He did not present symptoms and signs of any other organs besides only myocardial hypertrophy. He received enzyme replacement therapy (ERT) with intravenous agalsidase-beta every other week via outpatient department for 3 years. Recently, TTE was performed and showed diffuse severe concentric LVH of an average ventricular wall thickness increased to 19 mm despite regularly ERT. Focal intramural and subepicardial DHE was newly developed at LV basal lateral and septal wall on cardiac MRI. Neutralizing antibody against agalsidase -beta was not found in serum.
Fabry disease of cardiac variant type can be delayed in diagnostic aspect because of absence of typical symptoms and signs. Despite the absence of neutralizing antibody, ERT did not prevent both further myocardial hypertrophy and myocardial fibrosis in patient with advanced myocardial hypertrophy caused by delayed diagnosis of Fabry disease. Suspicion of Fabry disease through detailed history taking including family history in patients with diffuse ventricular hypertrophy on an echocardiography can lead to early diagnosis and treatment and can result in improvement in a clinical outcome.
Collapse
Affiliation(s)
- S H Park
- Eulji University Hospital, Daejeon, Korea (Republic of)
| | - K T Jung
- Eulji University Hospital, Daejeon, Korea (Republic of)
| | - Y J Choi
- Eulji University Hospital, Daejeon, Korea (Republic of)
| | - W H Kim
- Eulji University Hospital, Daejeon, Korea (Republic of)
| | - J Y Chin
- Eulji University Hospital, Daejeon, Korea (Republic of)
| | - K W Kang
- Eulji University Hospital, Daejeon, Korea (Republic of)
| |
Collapse
|
24
|
Lee S, Kweon OK, Kim WH. Relationship of serum leptin concentration with pituitary-dependent hyperadrenocorticism and cholestatic disease in dogs. J Small Anim Pract 2019; 60:601-606. [PMID: 31276206 PMCID: PMC6852161 DOI: 10.1111/jsap.13044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 07/27/2018] [Revised: 02/26/2019] [Accepted: 04/12/2019] [Indexed: 12/28/2022]
Abstract
OBJECTIVES To measure serum leptin concentration in dogs with pituitary-dependent hyperadrenocorticism and varying degrees of cholestatic disease and determine whether serum levels differed between dogs with pituitary-dependent hyperadrenocorticism and those with gall bladder mucocoele. MATERIALS AND METHODS Client-owned healthy dogs (n=20), dogs diagnosed with gall bladder mucocoele (n=20) and dogs diagnosed with pituitary-dependent hyperadrenocorticism (n=60) were enrolled. Only dogs of normal body condition score were included. Dogs with pituitary-dependent hyperadrenocorticism were divided into three groups according to the severity of cholestatic disease: normal gall bladder (n=20), cholestasis (n=20) and gall bladder mucocoele (n=20). Serum leptin levels were measured using sandwich enzyme-linked immunosorbent assay. RESULTS Serum concentrations of leptin were similar between dogs with gall bladder mucocoele and those with pituitary-dependent hyperadrenocorticism accompanied by gall bladder mucocoele; these concentrations were significantly higher than those in healthy control dogs. In dogs with pituitary-dependent hyperadrenocorticism, circulating leptin concentration significantly increased with the severity of cholestasis: higher in the cholestasis group than the normal gall bladder group and higher in the gall bladder mucocoele group than the cholestasis group. CLINICAL SIGNIFICANCE Elevated circulating leptin concentration was associated with canine pituitary-dependent hyperadrenocorticism and gall bladder mucocoele. Homeostatic imbalance of leptin concentration might be associated with severity of cholestatic disease in pituitary-dependent hyperadrenocorticism.
Collapse
Affiliation(s)
- S Lee
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 151-742, Republic of Korea
| | - O-K Kweon
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 151-742, Republic of Korea
| | - W H Kim
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 151-742, Republic of Korea
| |
Collapse
|
25
|
Affiliation(s)
- S H Lee
- Division of Cardiology, Department of Internal Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Republic of Korea
| | - W H Kim
- Division of Cardiology, Department of Internal Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Republic of Korea
| |
Collapse
|
26
|
An JU, Ho H, Kim J, Kim WH, Kim J, Lee S, Mun SH, Guk JH, Hong S, Cho S. Dairy Cattle, a Potential Reservoir of Human Campylobacteriosis: Epidemiological and Molecular Characterization of Campylobacter jejuni From Cattle Farms. Front Microbiol 2018; 9:3136. [PMID: 30619204 PMCID: PMC6305296 DOI: 10.3389/fmicb.2018.03136] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [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: 10/16/2018] [Accepted: 12/04/2018] [Indexed: 12/31/2022] Open
Abstract
Campylobacter jejuni is a major foodborne pathogen that is increasingly found worldwide and that is transmitted to humans through meat or dairy products. A detailed understanding of the prevalence and characteristics of C. jejuni in dairy cattle farms, which are likely to become sources of contamination, is imperative and is currently lacking. In this study, a total of 295 dairy cattle farm samples from 15 farms (24 visits) in Korea were collected. C. jejuni prevalence at the farm level was 60% (9/15) and at the animal level was 23.8% (68/266). Using the multivariable generalized estimating equation (GEE) model based on farm-environmental factors, we estimated that a high density of cattle and average environmental temperature (7 days prior to sampling) below 24°C affects the presence and survival of C. jejuni in the farm environment. Cattle isolates, together with C. jejuni from other sources (chicken and human), were genetically characterized based on analysis of 10 virulence and survival genes. A total of 19 virulence profile types were identified, with type 01 carrying eight genes (all except hcp and virB11) being the most prevalent. The prevalence of virB11 and hcp was significantly higher in isolates from cattle than in those from other sources (p < 0.05). Multilocus sequence typing (MLST) of C. jejuni isolates from three different sources mainly clustered in the CC-21 and CC-48. Within the CC-21 and CC-48 clusters, cattle isolates shared an indistinguishable pattern with human isolates according to pulsed-field gel electrophoresis (PFGE) and flaA-restriction fragment length polymorphism (RFLP) typing. This suggests that CC-21 and CC-48 C. jejuni from dairy cattle are genetically related to clinical campylobacteriosis isolates. In conclusion, the farm environment influences the presence and survival of C. jejuni, which may play an important role in cycles of cattle re-infection, and dairy cattle represent potential reservoirs of human campylobacteriosis. Thus, environmental management practices could be implemented on cattle farms to reduce the shedding of C. jejuni from cattle, subsequently reducing the potential risk of the spread of cattle-derived C. jejuni to humans through the food chain.
Collapse
Affiliation(s)
- Jae-Uk An
- BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Hungwui Ho
- Veterinary Research Institute, Ipoh, Malaysia
| | - Jonghyun Kim
- Division of Bacterial Disease Research, Center for Infectious Diseases Research, Korea National Institute of Health, Centers for Disease Control and Prevention, Cheongju-si, South Korea
| | - Woo-Hyun Kim
- BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Junhyung Kim
- BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Soomin Lee
- BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Seung-Hyun Mun
- BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Jae-Ho Guk
- BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Sahyun Hong
- Division of Bacterial Disease, Center for Laboratory Control of Infectious Diseases, Centers for Disease Control and Prevention, Cheongju-si, South Korea
| | - Seongbeom Cho
- BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| |
Collapse
|
27
|
Park EJ, Kim WH, Choi JY, Jang WY, Na JO, Choi JI, Kim JW, Kim EJ, Rha SW, Park CG, Seo HS, Choi CU. P2690The bleeding and cardiovascular risk according to NSAIDs selectivity in patients receiving antithrombotics and concomitant NSAIDs after myocardial infarction: a nationwide cohort study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- E J Park
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - W H Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - J Y Choi
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - W Y Jang
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - J O Na
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - J I Choi
- Korea University Anam Hospital, Seoul, Korea Republic of
| | - J W Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - E J Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - S W Rha
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - C G Park
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - H S Seo
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - C U Choi
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| |
Collapse
|
28
|
Kim W, Lee EY, Park SE, Park EK, Kim JS, Kim DS, Shim KW. Neuropsychological impacts of indirect revascularization for pediatric moyamoya disease. Childs Nerv Syst 2018; 34:1199-1206. [PMID: 29679197 DOI: 10.1007/s00381-018-3804-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 04/11/2018] [Indexed: 10/17/2022]
Abstract
PURPOSE Moyamoya disease (MMD) commonly leads to neurocognitive impairment. This study was carried out to show that temporal encephaloduroarteriosynangiosis (EDAS) has a positive neuropsychological impact on pediatric MMD patients. METHODS Fifty-five participants diagnosed with MMD from 2008 to 2014 were included in this retrospective study. The mean age at the preoperative evaluation was 9.5 years and the mean age at postoperative evaluation was 10.4. The average interval of initial and follow-up test was 10 months. K-WISC-III, Rey-Kim memory test, Children's Color Trails test (CCTT), Wisconsin Card Sorting Test (WCST), and Advanced Test of Attention (ATA) were used to evaluate patient's neurocognitive profile. RESULTS In this study, preoperative and postoperative neuropsychological fields were compared. Prior operation, pediatric MMD patients showed 54.2% deficit of inattention but only around 2.5% deficit in verbal memory recall function. There was a significant increase of performance IQ and PO score component of PIQ improved almost 10 scores after surgery. For memorial function, there was an improvement of approximately 10 scores in MQ after the surgery. This study also showed parietal activation following surgical treatment which enhanced the ability to interpret visual materials, to register and to retrieve visual information. Interestingly, despite the parietal cover surgery, there was a significant improvement of performance on WCST and CCTT measuring the prefrontal executive function. Concerning failure to maintain set, no significant postoperative improvements were made. However, simple and selective visual attention on ATA was significantly improved postoperatively. CONCLUSIONS The results from neuropsychological field comparison testifies the effectiveness of temporal EDAS in pediatric MMD patients. The surgery not only enhances the blood flow in operative regions, but it also improves the broad cerebral function including frontoparietal domains. Such alteration leads to overall advancement in cognitive function which are impaired due to MMD.
Collapse
Affiliation(s)
- WooHyun Kim
- Department of Pediatric Neurosurgery, Severance Children's Hospital, Yonsei University College of Medicine, 50 Yonseiro, Seodaemungu, Seoul, South Korea
| | - Eun-Young Lee
- Happience Psychology Clinic attached to Korea Jeail Psychiatric Clinic, Seoul, South Korea
| | - Seong-Eun Park
- Department of Pediatric Neurosurgery, Severance Children's Hospital, Yonsei University College of Medicine, 50 Yonseiro, Seodaemungu, Seoul, South Korea
| | - Eun-Kyung Park
- Department of Pediatric Neurosurgery, Severance Children's Hospital, Yonsei University College of Medicine, 50 Yonseiro, Seodaemungu, Seoul, South Korea
| | - Ju-Seong Kim
- Department of Pediatric Neurosurgery, Severance Children's Hospital, Yonsei University College of Medicine, 50 Yonseiro, Seodaemungu, Seoul, South Korea
| | - Dong-Seok Kim
- Department of Pediatric Neurosurgery, Severance Children's Hospital, Yonsei University College of Medicine, 50 Yonseiro, Seodaemungu, Seoul, South Korea
| | - Kyu-Won Shim
- Department of Pediatric Neurosurgery, Severance Children's Hospital, Yonsei University College of Medicine, 50 Yonseiro, Seodaemungu, Seoul, South Korea.
| |
Collapse
|
29
|
Park SK, Hur M, Yoo S, Choi JY, Kim WH, Kim JT, Bahk JH. Effect of remote ischaemic preconditioning in patients with ischaemic heart disease undergoing orthopaedic surgery: a randomized controlled trial. Br J Anaesth 2017; 120:198-200. [PMID: 29397131 DOI: 10.1016/j.bja.2017.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 08/22/2017] [Accepted: 09/19/2017] [Indexed: 12/27/2022] Open
Affiliation(s)
- S-K Park
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - M Hur
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - S Yoo
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - J-Y Choi
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - W H Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea.
| | - J-T Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - J-H Bahk
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| |
Collapse
|
30
|
An E, Ock CY, Kim TY, Lee KH, Han SW, Im SA, Kim TY, Liao WL, Cecchi F, Blackler A, Thyparambil S, Kim WH, Burrows J, Hembrough T, Catenacci DVT, Oh DY, Bang YJ. Quantitative proteomic analysis of HER2 expression in the selection of gastric cancer patients for trastuzumab treatment. Ann Oncol 2017; 28:110-115. [PMID: 27687309 PMCID: PMC5378223 DOI: 10.1093/annonc/mdw442] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background A wide range of response rates have been reported in HER2-positive gastric cancer (GC) patients treated with trastuzumab. Other HER2-targeted therapies for GC have yet to show efficacy in clinical trials. These findings raise question about the ability of standard HER2 diagnostics to accurately distinguish between GC patients who would and would not benefit from anti-HER2 therapies. Patients and methods GC patients (n = 237), including a subset from the Trastuzumab in GC (ToGA) trial were divided into three groups based on HER2 status and history of treatment with standard chemotherapy or chemotherapy plus trastuzumab. We applied mass spectrometry-based proteomic analysis to quantify HER2 protein expression in formalin-fixed tumor samples. Using HER2 expression as a continuous variable, we defined a predictive protein level cutoff to identify which patients would benefit from trastuzumab. We compared quantitated protein level with clinical outcome and HER2 status as determined by conventional HER2 diagnostics. Results Quantitative proteomics detected a 115-fold range of HER2 protein expression among patients diagnosed as HER2 positive by standard methods. A protein level of 1825 amol/µg was predicted to determine benefit from the addition of trastuzumab to chemotherapy. Trastuzumab treated patients with HER2 protein levels above this cutoff had twice the median overall survival (OS) of their counterparts below the cutoff (35.0 versus 17.5 months, P = 0.011). Conversely, trastuzumab-treated patients with HER2 levels below the cutoff had outcomes similar to HER2-positive patients treated with chemotherapy. (Progression-free survival = 7.0 versus 6.5 months: P = 0.504; OS = 17.5 versus 12.6 months: P = 0.520). HER2 levels were not prognostic for response to chemotherapy. Conclusions Proteomic analysis of HER2 expression demonstrated a quantitative cutoff that improves selection of GC patients for trastuzumab as compared with current diagnostic methods.
Collapse
Affiliation(s)
- E An
- NantOmics, Rockville, USA,Oncoplex Diagnostics, Rockville, USA
| | - C-Y Ock
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Seoul, Korea
| | - T-Y Kim
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Seoul, Korea
| | - K-H Lee
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Seoul, Korea.,Cancer Research Institute, Seoul National University College of Medicine, Seoul, Seoul, Korea
| | - S-W Han
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Seoul, Korea.,Cancer Research Institute, Seoul National University College of Medicine, Seoul, Seoul, Korea
| | - S-A Im
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Seoul, Korea.,Cancer Research Institute, Seoul National University College of Medicine, Seoul, Seoul, Korea
| | - T-Y Kim
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Seoul, Korea.,Cancer Research Institute, Seoul National University College of Medicine, Seoul, Seoul, Korea
| | - W-L Liao
- NantOmics, Rockville, USA,Oncoplex Diagnostics, Rockville, USA
| | - F Cecchi
- NantOmics, Rockville, USA,Oncoplex Diagnostics, Rockville, USA
| | - A Blackler
- NantOmics, Rockville, USA,Oncoplex Diagnostics, Rockville, USA
| | - S Thyparambil
- NantOmics, Rockville, USA,Oncoplex Diagnostics, Rockville, USA
| | - W H Kim
- Department of Pathology, Seoul National University Hospital, Seoul, Korea
| | - J Burrows
- Oncoplex Diagnostics, Rockville, USA
| | - T Hembrough
- NantOmics, Rockville, USA,Oncoplex Diagnostics, Rockville, USA
| | - D V T Catenacci
- Department of Medicine, Section of Hematology/Oncology, University of Chicago, Chicago, USA
| | - D-Y Oh
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Seoul, Korea.,Cancer Research Institute, Seoul National University College of Medicine, Seoul, Seoul, Korea
| | - Y-J Bang
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Seoul, Korea.,Cancer Research Institute, Seoul National University College of Medicine, Seoul, Seoul, Korea
| |
Collapse
|
31
|
Lee S, Kweon OK, Kim WH. Increased Leptin and Leptin Receptor Expression in Dogs With Gallbladder Mucocele. J Vet Intern Med 2016; 31:36-42. [PMID: 28032399 PMCID: PMC5259632 DOI: 10.1111/jvim.14612] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 10/11/2016] [Accepted: 10/21/2016] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Leptin and its receptor play a role in several disease processes such as pancreatitis and heart disease. However, their association with gallbladder mucocele (GBM) in dogs has not been reported. HYPOTHESIS/OBJECTIVES To evaluate differences in the expression of leptin and leptin receptor between dogs with and without GBM. ANIMALS Twenty-five healthy dogs, including 9 laboratory beagle dogs, and 22 client-owned dogs with GBM. METHODS Serum leptin concentration was determined in blood samples of all dogs by ELISA. Canine gallbladder samples were collected from 9 dogs with GBM that underwent surgery for therapeutic purposes and from 9 healthy laboratory beagle dogs as a normal control group. Samples were analyzed for leptin and leptin receptor mRNA by real-time polymerase chain reaction. RESULTS Serum leptin concentration was significantly higher in dogs with GBM than in healthy dogs (medians of 7.03 and 2.18 ng/mL, respectively; P < .001). Patients with GBM that had undergone surgery had significantly higher serum leptin concentrations than those that had not (medians of 12.2 and 4.09 ng/mL, respectively; P = .001). However, no difference in serum leptin concentration was found between dogs with GBM with or without endocrinopathies. The mRNA expression levels of leptin and its receptor were significantly increased in the gallbladder tissues of dogs with GBM. CONCLUSIONS AND CLINICAL IMPORTANCE Dysregulation of leptin might be involved in the pathophysiology of GBM, and leptin concentrations might be associated with GBM severity.
Collapse
Affiliation(s)
- S Lee
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Gwanak-gu, Seoul, Korea
| | - O-K Kweon
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Gwanak-gu, Seoul, Korea
| | - W H Kim
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Gwanak-gu, Seoul, Korea
| |
Collapse
|
32
|
Abstract
There is a critical need in animal agriculture to develop novel antimicrobials and alternative strategies that will help to reduce the use of antibiotics and address the challenges of antimicrobial resistance. High-throughput gene expression analysis is providing new tools that are enabling the discovery of host-derived antimicrobial peptides. Examples of gene-encoded natural antibiotics that have gained attention include antimicrobial peptides such as human granulysin and its multi-species homolog, namely NK-lysin, which provide a protective response against a broad range of microbes and are a principal component of innate immunity in vertebrates. Both granulysin and NK-lysin are localised in cytolytic granules in natural killer and cytotoxic T lymphocytes. Host-derived NK-lysins that were first described in mammals are also found in avian species, and they have been shown to have antimicrobial activities that could potentially be used to control important poultry pathogens. Morphological alterations observed following chicken NK-lysin binding to Eimeria sporozoites and Escherichia coli membranes indicate damage and disruption of cell membranes, suggesting that NK-lysin kills pathogenic protozoans and bacteria by direct interaction. Genotype analysis revealed that chicken NK-lysin peptides derived from certain alleles were more effective at killing pathogens than those derived from others, which could potentially affect susceptibility to diseases. Although the host-derived antimicrobial peptides described in this paper may not, by themselves, be able to replace the antibiotics currently used in animal production, their use as specific treatments based on their known mechanisms of action is showing promising results.
Collapse
|
33
|
Park KJ, Ryoo SB, Kim JS, Kim TI, Baik SH, Kim HJ, Lee KY, Kim M, Kim WH. Allogeneic adipose-derived stem cells for the treatment of perianal fistula in Crohn's disease: a pilot clinical trial. Colorectal Dis 2016; 18:468-76. [PMID: 26603576 DOI: 10.1111/codi.13223] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 09/10/2015] [Indexed: 12/13/2022]
Abstract
AIM Many perianal fistulae in Crohn's disease do not respond to conventional surgical and medical management and recurrence rates are high. The study evaluated the safety and feasibility of allogeneic adipose-derived stem cells for the treatment of perianal fistula in Crohn's disease. METHOD A multicentre, open-label, dose escalation pilot study was performed. The first three patients (group 1) were administered 1 × 10(7) cells/ml based on the size of the fistula tract. Four weeks later, after which time this dose had been confirmed to be safe, the next three patients (group 2) were administered 3 × 10(7) cells/ml. The end-point was complete closure at 8 weeks after the injection. Patients who attended for the 8 week assessment were followed for an additional 6 months. RESULTS There were no adverse events of Grade 3 or 4 severity and no adverse events related to the treatment with allogeneic adipose-derived stem cells. Two patients in group 1 achieved complete closure of the fistula at month 4 and month 6, and one patient in group 2 achieved complete closure at 8 weeks. The closure was sustained up to month 8 in all three of those patients. CONCLUSION These data suggest that allogeneic adipose-derived stem cells may be a feasible treatment option for perianal fistula in Crohn's disease.
Collapse
Affiliation(s)
- K J Park
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - S-B Ryoo
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - J S Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - T I Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - S H Baik
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - H J Kim
- Department of Internal Medicine, Kyung Hee University College of Medicine, Seoul, Korea
| | - K Y Lee
- Department of Surgery, Kyung Hee University College of Medicine, Seoul, Korea
| | - M Kim
- Anterogen Co. Ltd, Seoul, Korea
| | - W H Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| |
Collapse
|
34
|
Yang WS, Lee JE, Seo YC, Lee JS, Yoo HM, Park JK, Park SW, Choi HS, Lee KB, Kim WH. Utillization of automobile shredder residue (ASR) as a reducing agent for the recovery of black copper. KOREAN J CHEM ENG 2016. [DOI: 10.1007/s11814-015-0258-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
35
|
Affiliation(s)
- S H Lee
- From the Division of Cardiology, Department of Internal Medicine, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - W H Kim
- From the Division of Cardiology, Department of Internal Medicine, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - J K Ko
- From the Division of Cardiology, Department of Internal Medicine, Chonbuk National University Medical School, Jeonju, Republic of Korea
| |
Collapse
|
36
|
Lee KH, Park JW, Sung HS, Choi YJ, Kim WH, Lee HS, Chung HJ, Shin HW, Cho CH, Kim TY, Li SH, Youn HD, Kim SJ, Chun YS. PHF2 histone demethylase acts as a tumor suppressor in association with p53 in cancer. Oncogene 2014; 34:2897-909. [PMID: 25043306 DOI: 10.1038/onc.2014.219] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 05/05/2014] [Accepted: 06/15/2014] [Indexed: 12/14/2022]
Abstract
Plant homeodomain finger 2 (PHF2) has a role in epigenetic regulation of gene expression by demethylating H3K9-Me2. Several genome-wide studies have demonstrated that the chromosomal region including the PHF2 gene is often deleted in some cancers including colorectal cancer, and this finding encouraged us to investigate the tumor suppressive role of PHF2. As p53 is a critical tumor suppressor in colon cancer, we tested the possibility that PHF2 is an epigenetic regulator of p53. PHF2 was associated with p53, and thereby, promoted p53-driven gene expression in cancer cells under genotoxic stress. PHF2 converted the chromatin that is favorable for transcription by demethylating the repressive H3K9-Me2 mark. In an HCT116 xenograft model, PHF2 was found to be required for the anticancer effects of oxaliplatin and doxorubicin. In PHF2-deficient xenografts, p53 expression was profoundly induced by both drugs, but its downstream product p21 was not, suggesting that p53 cannot be activated in the absence of PHF2. To find clinical evidence about the role of PHF2, we analyzed the expressions of PHF2, p53 and p21 in human colon cancer tissues and adjacent normal tissues from patients. PHF2 was downregulated in cancer tissues and PHF2 correlated with p21 in cancers expressing functional p53. Colon and stomach cancer tissue arrays showed a positive correlation between PHF2 and p21 expressions. Informatics analyses using the Oncomine database also supported our notion that PHF2 is downregulated in colon and stomach cancers. On the basis of these findings, we propose that PHF2 acts as a tumor suppressor in association with p53 in cancer development and ensures p53-mediated cell death in response to chemotherapy.
Collapse
Affiliation(s)
- K-H Lee
- Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - J-W Park
- 1] Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, Republic of Korea [2] Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H-S Sung
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Y-J Choi
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - W H Kim
- Department of Pathology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H S Lee
- Department of Pathology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H-J Chung
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H-W Shin
- Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - C-H Cho
- 1] Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, Republic of Korea [2] Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - T-Y Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - S-H Li
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H-D Youn
- 1] Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, Republic of Korea [2] Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - S J Kim
- 1] Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, Republic of Korea [2] Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea [3] Department of Physiology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Y-S Chun
- 1] Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, Republic of Korea [2] Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea [3] Department of Physiology, Seoul National University College of Medicine, Seoul, Republic of Korea
| |
Collapse
|
37
|
Kim WH, Joo HS, Ko JS, Gwak MS, Lee SK, Kim GS. Vecuronium requirements according to the operative phase during living donor liver transplantation under desflurane anesthesia. Transplant Proc 2014; 45:1920-3. [PMID: 23769073 DOI: 10.1016/j.transproceed.2012.10.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Revised: 08/28/2012] [Accepted: 10/09/2012] [Indexed: 10/26/2022]
Abstract
INTRODUCTION The requirements of nondepolarizing neuromuscular blocking agent during liver transplantation show conflicting results. We sought to evaluate the requirements according to the operative phase and find extrahepatic factors that influence neuromuscular blocking agent requirements. METHODS We enrolled 35 patients undergoing living donor liver transplantation. Continuous infusion of vecuronium was adjusted every 15 minutes for consistent neuromuscular blockade aimed at T1/Tc of 0.10 monitored with a neuromuscular transmission module. We compared the mean infusion dose in each phase, and investigated whether it is correlated with preoperative Model for End-Stage Liver Disease (MELD) score, Child-Turcotte-Pugh (CTP) score, graft-recipient weight ratio (GRWR), or time to recovery of first twitch response to train-of-four (TOF) stimulation. RESULTS There was a significant difference between vecuronium doses during each phase (P < .001): 0.48 ± 0.16 μg/kg/min, preanhepatic; 0.38 ± 0.14 μg/kg/min, anhepatic and 0.26 ± 0.07 μg/kg/min, neohepatic phase. There was a significant positive correlation between vecuronium infusion dose in the preanhepatic phase and CTP scores (P = .006, correlation coefficient = 0.465). There was also a significant negative correlation between the time to recovery of first twitch response of TOF stimulation and vecuronium infusion dose in the preanhepatic phase (P = .001, correlation coefficient = -0.546). The infusion dose during the preanhepatic phase was not associated with the MELD score, and that of neohapatic phase not with GRWR. CONCLUSIONS The vecuronium infusion dose requirement during the anhepatic decreased compared with that in the preanhepatic phase. It further decreased during the neohepatic phase compared with the previous phases. Vecuronium infusion dose reduction is suggested especially during the neohepatic phase for early extubation. The dose during the preanhepatic phase is suggested to be determined considering the CTP score and the time to recovery of the TOF response.
Collapse
Affiliation(s)
- W H Kim
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | | | | | | | | | | |
Collapse
|
38
|
|
39
|
Lee SM, Kim WH, Ahn HJ, Kim JA, Yang MK, Lee CH, Lee JH, Kim YR, Choi JW. The effects of prolonged inspiratory time during one-lung ventilation: a randomised controlled trial. Anaesthesia 2013; 68:908-16. [PMID: 23789714 DOI: 10.1111/anae.12318] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/27/2013] [Indexed: 11/28/2022]
Abstract
We evaluated the effects of a prolonged inspiratory time on gas exchange in subjects undergoing one-lung ventilation for thoracic surgery. One hundred patients were randomly assigned to Group I:E = 1:2 or Group I:E = 1:1. Arterial blood gas analysis and respiratory mechanics measurements were performed 10 min after anaesthesia induction, 30 and 60 min after initiation of one-lung ventilation, and 15 min after restoration of conventional two-lung ventilation. The mean (SD) ratio of the partial pressure of arterial oxygen to fraction of inspired oxygen after 60 min of one-lung ventilation was significantly lower in Group I:E = 1:2 compared with Group I:E = 1:1 (27.7 (13.2) kPa vs 35.2 (22.1) kPa, respectively, p = 0.043). Mean (SD) physiological dead space-to-tidal volume ratio after 60 min of one-lung ventilation was significantly higher in Group I:E = 1:2 compared with Group I:E = 1:1 (0.46 (0.04) vs 0.43 (0.04), respectively, p = 0.008). Median (IQR [range]) peak inspiratory pressure was higher in Group I:E = 1:2 compared with Group I:E = 1:1 after 60 min of one-lung ventilation (23 (22-25 [18-29]) cmH2O vs 20 (18-21 [16-27]) cmH2O, respectively, p < 0.001) and median (IQR [range]) mean airway pressure was lower in Group I:E = 1:2 compared with Group I:E = 1:1 (10 (8-11 [5-15]) cmH2O vs 11 (10-13 [5-16]) cmH2O, respectively, p < 0.001). We conclude that, compared with an I:E ratio of 1:2, an I:E ratio of 1:1 resulted in a modest improvement in oxygenation and decreased shunt fraction during one-lung ventilation.
Collapse
Affiliation(s)
- S M Lee
- Department of Anaesthesia and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Abstract
We report a very rare case of isolated multiple pulmonary arterial calcification with severe bilateral peripheral pulmonary arterial stenosis diagnosed in utero. Despite treatment with bisphosphonate for 6 months, systolic right ventricular pressure increased persistently and surpassed left ventricular pressure. After successful bilateral pulmonary arterioplasty at 13 months of age, the patient showed decreased systolic right ventricular pressure with normal interventricular septal configuration. This is the first case report for an isolated pulmonary artery calcification without other arterial calcification proven by non-contrast computed tomography of a living patient.
Collapse
Affiliation(s)
- S Cha
- Department of Pediatrics, Seoul National University Children's Hospital, Seoul, South Korea
| | | | | | | | | | | |
Collapse
|
41
|
Gwak MS, Kim WH, Choi SJ, Lee JJ, Ko JS, Kim GS, Kim YI, Kim MH. Arthroscopic shoulder surgery under general anesthesia with brachial plexus block: postoperative respiratory dysfunction of combined obstructive and restrictive pathology. Anaesthesist 2013; 62:113-20. [PMID: 23400711 DOI: 10.1007/s00101-012-2125-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 10/07/2012] [Revised: 12/04/2012] [Accepted: 12/10/2012] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Changes in respiratory parameters and pulmonary function tests were evaluated after shoulder arthroscopic surgery with brachial plexus block (BPB). The purpose of this study was to identify the mechanism of respiratory dysfunction after this type of surgery. METHODS Patients undergoing arthroscopic rotator cuff repair under general anesthesia (GA) with BPB were enrolled in the arthroscopy group (n = 30) while those undergoing open reduction of a clavicle or humerus fracture under GA were enrolled in the control group (n = 30). Forced vital capacity (FVC) and forced expiratory volume 1 s (FEV(1)) were measured at the outpatient clinic stage (#1) before (#2) and 20 min after BPB (#3) and 1 h after extubation (#4). Respiratory variable measurements along with the cuff leak test were performed 5 min after surgical positioning (T1) and at the start of skin closure (T2). Respiratory discomfort was evaluated after extubation. The upper airway diameters and soft tissue depth of chest wall were also measured by ultrasonography at stages #3 and #4. RESULTS Static compliance decreased significantly at T2 in the arthroscopy group (50 ± 11 at T1 vs. 44 ± 9 ml/cm H(2)O at T2, p =0.035) but not in the control group. The incidence of positive cuff leak tests at T2 was significantly higher in the arthroscopy group than in the control group (47% in the arthroscopy group vs. 17% in controls, p =0.010). While FEV(1) and FVC remained stable at stages #1 and #2, FVC and FEV(1) decreased at stages #3 and #4 only in the arthroscopy group (FVC in arthroscopy group, #2: 3.26 ± 0.77 l; #3: 2.55 ± 0.63 l, p =0.015 vs. #2; #4: 2.66 ± 0.41 l, p =0.040 vs. #2). The subglottic diameter decreased at #4 in the arthroscopy group, while no changes occurred in the control group (0.70 ± 0.21 cm vs. 0.85 ± 0.23 cm in the arthroscopy and control groups, respectively, p =0.011). Depth of skin to pleura increased at both intercostal spaces 1-2 and 3-4 in the arthroscopy group. There were three cases of hypoxia (S(p)O(2) < 95%) with room air in the arthroscopy group while none occurred in the controls. CONCLUSION Shoulder arthroscopic surgery under GA with BPB induced both restrictive and obstructive pathologies. It is important to maintain a high level of awareness for the potential negative respiratory effects of this surgery especially for subjects with pre-existing cardiopulmonary disease. The measurements in this study would be useful to monitor the risk of respiratory dysfunction in these patients.
Collapse
Affiliation(s)
- M S Gwak
- Department of Anesthesiolgy and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-Dong, 135-710, Seoul, Republic of Korea
| | | | | | | | | | | | | | | |
Collapse
|
42
|
Affiliation(s)
- W H Kim
- Digestive Disease Center, CHA Bundang Medical Center, CHA University, Seongnam, South Korea
| | | | | | | |
Collapse
|
43
|
Affiliation(s)
- W H Kim
- Digestive Disease Center, CHA Bundang Medical Center, CHA University, Seongnam, South Korea
| | | | | |
Collapse
|
44
|
Kim WH, Choi YS. Causal Relationship of the Logistic Area for Military Service Satisfaction. Communications for Statistical Applications and Methods 2012. [DOI: 10.5351/ckss.2012.19.3.381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
45
|
Lee HE, Kim MA, Lee HS, Jung EJ, Yang HK, Lee BL, Bang YJ, Kim WH. MET in gastric carcinomas: comparison between protein expression and gene copy number and impact on clinical outcome. Br J Cancer 2012; 107:325-33. [PMID: 22644302 PMCID: PMC3394975 DOI: 10.1038/bjc.2012.237] [Citation(s) in RCA: 144] [Impact Index Per Article: 12.0] [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] [Indexed: 12/12/2022] Open
Abstract
Background: The aim of this study was to compare gene copy number (GCN) and protein expression of MET and to evaluate their prognostic roles in gastric carcinomas. Methods: MET protein expression and gene amplification (GA) status were determined by immunohistochemistry (IHC) and silver in-situ hybridisation (SISH), respectively, in a large series of gastric carcinoma. Results: Protein overexpression was observed in 104 of 438 cases, with IHC 2+ in 94 and IHC 3+ in 10, and high polysomy of chromosome 7 and GA were found in 61 and 13 of 381, respectively. Direct comparison revealed a significant correlation between high level of protein expression and increased GCN. All cases with GA showed protein overexpression. Furthermore, all with IHC 3+ showed GA except 1, even which could be categorised as GA according to the ASCO/CAP guideline for human epidermal growth factor receptor 2 assessment. IHC 3+ and GA were significantly associated with poor prognosis. Conclusion: MET IHC reflects well on GA, and therefore, it could be a primary screening test for patient selection for anti-MET therapy if GA is a major determinant of drug responsiveness. Also, the prognostic role of MET indicates that anti-MET therapy is a very promising modality in adjuvant treatment for gastric cancer.
Collapse
Affiliation(s)
- H E Lee
- Department of Pathology, Seoul National University Hospital, 28 Yeongeon-dong, Jongno-gu, Seoul 110-799, Korea
| | | | | | | | | | | | | | | |
Collapse
|
46
|
Paterson-Beedle M, Jeong BC, Lee CH, Jee KY, Kim WH, Renshaw JC, Macaskie LE. Radiotolerance of phosphatases of a Serratia sp.: potential for the use of this organism in the biomineralization of wastes containing radionuclides. Biotechnol Bioeng 2012; 109:1937-46. [PMID: 22422344 DOI: 10.1002/bit.24467] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Revised: 01/29/2012] [Accepted: 02/01/2012] [Indexed: 11/05/2022]
Abstract
Aqueous wastes from nuclear fuel reprocessing present special problems of radiotoxicity of the active species. Cells of Serratia sp. were found previously to accumulate high levels of hydrogen uranyl phosphate (HUP) via the activity of a phosphatase enzyme. Uranium is of relatively low radiotoxicity whereas radionuclide fission products such as (90)Sr and (137)Cs are highly radiotoxic. These radionuclides can be co-crystallized, held within the bio-HUP "host" lattice on the bacterial cells and thereby removed from contaminated solution, depending on continued phosphatase activity. Radiostability tests using a commercial (60)Co γ-source showed that while cell viability and activity of purified phosphatase were lost within a few hours on irradiation, whole-cell phosphatase retained 80% of the initial activity, even after loss of cell culturability, which was increased to 100% by the incorporation of mercaptoethanol as an example radioprotectant, beyond an accumulated dose of >1.3 MGy. Using this co-crystallization approach (without mercaptoethanol) (137)Cs(+) and (85)Sr(2+) were removed from a simulated waste selectively against a 33-fold excess of Na(+).
Collapse
Affiliation(s)
- M Paterson-Beedle
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | | | | | | | | | | | | |
Collapse
|
47
|
Kim WH, Lee CJ, Sim WS, Shin BS, Ahn HJ, Lim HY. Anatomical Analysis of Computed Tomography Images for Determining the Optimal Oblique Fluoroscope Angle for Percutaneous Coeliac Plexus Block. J Int Med Res 2011; 39:1798-807. [DOI: 10.1177/147323001103900522] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
This retrospective study used abdominal computed tomography (CT) scan images to determine the optimal safe oblique angle for fluoroscopy in fluoroscope-assisted coeliac plexus block (CPB). Abdominal CT scans from 131 patients were included in the study: 42 patients with cancer of the pancreas head, 45 with cancer of the pancreas body and tail and 44 with chronic pancreatitis. The oblique angle and entry distance from the midline were measured at the T12 and L1 levels, and the safe angle range that avoided puncture of the organs was also measured. The optimal angle varied between the T12 and L1 levels, and between the right and left sides at the T12 level. There was no difference in the oblique angle between the patient groups. The optimal oblique angle for fluoroscopy was determined to be 17° for right T12, 18° for left T12, and 19° for both left and right L1.
Collapse
Affiliation(s)
- WH Kim
- Department of Anaesthesiology and Pain Medicine, Samsung Seoul Hospital, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - CJ Lee
- Zeropain Pain Management Clinic, Seoul, Republic of Korea
| | - WS Sim
- Department of Anaesthesiology and Pain Medicine, Samsung Seoul Hospital, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - BS Shin
- Department of Anaesthesiology and Pain Medicine, Samsung Seoul Hospital, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - HJ Ahn
- Department of Anaesthesiology and Pain Medicine, Samsung Seoul Hospital, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - HY Lim
- Department of Anaesthesiology and Pain Medicine, Samsung Seoul Hospital, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| |
Collapse
|
48
|
Lee HE, Park DJ, Kim WH, Kim HH, Lee HS. High FOXP3+ regulatory T-cell density in the sentinel lymph node is associated with downstream non-sentinel lymph-node metastasis in gastric cancer. Br J Cancer 2011; 105:413-9. [PMID: 21730981 PMCID: PMC3172906 DOI: 10.1038/bjc.2011.248] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [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] [Indexed: 01/13/2023] Open
Abstract
Background: We aimed to evaluate the immunologic nature of sentinel lymph nodes (SLNs) in gastric cancer patients and to determine whether it can predict non-SLN metastasis. Methods: Sentinel lymph node samples were collected from 64 gastric carcinoma patients who had undergone gastrectomy with SLN biopsy. One representative SLN sample was selected from each patient and was subjected to immunostaining for CD8, CD57, FOXP3, and DC-LAMP. The numbers of marker-positive cells in each sample were counted. The relationships between various immune cell densities and clinicopathologic parameters or metastasis status of SLNs and non-SLNs were sought. Results: High FOXP3+ Treg density of the SLN was found to be significantly associated with the presence of metastasis in either SLNs or non-SLNs. DC-LAMP+ cell density of the SLN was the highest at the isolated tumours cell level, and this decreased along with an increase in tumour metastasis in either SLNs or non-SLNs. Univariate and multivariate logistic regression models revealed that high FOXP3+ Treg density of the SLN was an independently significant predictor of non-SLN metastasis. Conclusions: This study is the first to indicate an important role of SLNs in metastatic dissemination of gastric cancer. Our findings suggest that Tregs could be a new therapeutic target for regulating the metastasis of gastric cancer.
Collapse
Affiliation(s)
- H E Lee
- Department of Pathology, Seoul National University Hospital, 28 Yeongon-dong, Jongno-gu, Seoul 110-744, Korea
| | | | | | | | | |
Collapse
|
49
|
Camargo MC, Murphy G, Koriyama C, Pfeiffer RM, Kim WH, Herrera-Goepfert R, Corvalan AH, Carrascal E, Abdirad A, Anwar M, Hao Z, Kattoor J, Yoshiwara-Wakabayashi E, Eizuru Y, Rabkin CS, Akiba S. Determinants of Epstein-Barr virus-positive gastric cancer: an international pooled analysis. Br J Cancer 2011; 105:38-43. [PMID: 21654677 PMCID: PMC3137422 DOI: 10.1038/bjc.2011.215] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [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] [Subscribe] [Scholar Register] [Revised: 05/10/2011] [Accepted: 05/15/2011] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Meta-analyses of the published literature indicate that about 9% of gastric cancers contain Epstein-Barr virus (EBV), with consistent and significant differences by sex and anatomic subsite. This study aimed to identify additional determinants of EBV positivity and their joint effects. METHODS From 15 international populations with consistent laboratory testing for EBV, we pooled individual-level data for 5081 gastric cancer cases including information on age, sex, subsite, histologic type, diagnostic stage, geographic region, and period of diagnosis. First, we combined population-specific EBV prevalence estimates using random effects meta-analysis. We then aggregated individual-level data to estimate odds ratios of EBV positivity in relation to all variables, accounting for within-population clustering. RESULTS In unadjusted analyses, EBV positivity was significantly higher in males, young subjects, non-antral subsites, diffuse-type histology, and in studies from the Americas. Multivariable analyses confirmed significant associations with histology and region. Sex interacted with age (P=0.003) and subsite (P=0.002) such that male predominance decreased with age for both subsites. The positivity of EBV was not significantly associated with either stage or time period. CONCLUSION Aggregating individual-level data provides additional information over meta-analyses. Distinguishing histologic and geographic features as well as interactions among age, sex, and subsite further support classification of EBV-associated gastric cancer as a distinct aetiologic entity.
Collapse
Affiliation(s)
- M C Camargo
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 6120 Executive Boulevard., Rockville, MD 20852, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Ahn HS, Lee HJ, Yoo MW, Jeong SH, Park DJ, Kim HH, Kim WH, Lee KU, Yang HK. Changes in clinicopathological features and survival after gastrectomy for gastric cancer over a 20-year period. Br J Surg 2011; 98:255-60. [PMID: 21082693 DOI: 10.1002/bjs.7310] [Citation(s) in RCA: 147] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND The pattern of gastric cancer in the Western world is changing, with an increased proportion of tumours in the upper stomach. The aim of this study was to investigate changes in clinicopathological features and survival of patients with resected gastric cancer at a single institution, in an area of high incidence in the Far East. METHODS Clinical features and pathological findings were compared in patients with gastric cancer who underwent gastrectomy at Seoul National University Hospital during four consecutive periods (1986-1990, 1991-1995, 1996-2000 and 2001-2006). RESULTS There were 12 026 patients. The mean age increased from 53·4 years in the first period to 57·4 years in the last (P < 0·001). The proportion of patients aged 70 years or older also increased, reaching 16·1 per cent in the final period. Upper-third cancer increased from 5·3 per cent in the first period to 14·0 per cent in the fourth (P < 0·001). Early gastric cancer (pathological T1) increased continuously over the four time intervals, from 24·8 to 48·9 per cent (P < 0·001). The overall 5-year survival rate increased from 64·0 per cent in the first period to 73·2 per cent at the end (P < 0·001), and this survival improvement was apparent in patients aged 40 years or more. CONCLUSION The mean age of patients with gastric cancer has increased during the past 20 years. The proportion of early gastric cancer and overall survival have gradually increased, especially in patients aged over 40 years.
Collapse
Affiliation(s)
- H S Ahn
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | | | | | | | | | | | | | | | | |
Collapse
|