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  1. Article ; Online: Low-shear modeled microgravity affects metabolic networks of Escherichia coli O157:H7 EDL933: Further insights into space-microbiology consequences [Corrigendum: June 2022, v. 156, p. 111276]

    Kim, H. W. / Park, B. H. / Park, H. / Baek, B. C. / Choi, I. G. / Rhee, M. S.

    Food research international. 2022 Apr., v. 154, p. 111013

    2022  , Page(s) 111013

    Abstract: Escherichia coli O157:H7 EDL933 exposed to low-shear modeled microgravity (LSMMG) and normal gravity (NG) was used for a transcriptomic analysis. The modified Gompertz model (R² = 0.81–0.99) showed an increased growth rate of E. coli O157:H7 under LSMMG. ...

    Abstract Escherichia coli O157:H7 EDL933 exposed to low-shear modeled microgravity (LSMMG) and normal gravity (NG) was used for a transcriptomic analysis. The modified Gompertz model (R² = 0.81–0.99) showed an increased growth rate of E. coli O157:H7 under LSMMG. The mechanism of this active growth was associated with highly upregulated genes in nutrient and energy metabolism, including the TCA cycle, glycolysis, and pyruvate metabolism. Green fluorescent protein-labeled E. coli O157:H7 also formed significantly thick biofilms (fluorescent unit: NG, 1,263; LSMMG, 1,533; P = 0.0473) under LSMMG, whereas bacterial mobility decreased slightly (P = 0.0310). The transcriptomic analysis revealed that genes encoding glycogen biosynthesis (glgCAP operon) were upregulated (1.40 to 1.82 of log fold change [FC]) due to the downregulation of csrA (2.17 of log FC), which is the global regulator of biofilm formation of E. coli. We also identified 52 genes in E. coli O157:H7 EDL933 that were involved in the secretion pathway, 32 of which showed ≥2-fold significant changes in transcription levels after cultivation under LSMMG. Notably, all downregulated genes belonged to the type III and VI secretion systems, indicating that host cell contact secretion was dysregulated in the LSMMG cultures compared to the NG cultures. LSMMG also stimulates the pathogenicity of E. coli O157:H7 via transcriptional upregulation of Shiga toxin 1 (1.36 to 2.81 log FC) and toxin HokB (6.1 log FC). Our results suggest LSMMG affects bacterial growth, biofilm formation, and E. coli O157:H7 pathogenicity at some transcriptional levels, which indicates the importance of understanding biological consequences.
    Keywords Escherichia coli O157 ; Shiga-like toxin 1 ; bacterial growth ; biofilm ; biosynthesis ; energy metabolism ; fluorescence ; food research ; glycogen ; glycolysis ; logit analysis ; microgravity ; operon ; pathogenicity ; pyruvic acid ; secretion ; transcription (genetics) ; transcriptomics ; tricarboxylic acid cycle
    Language English
    Dates of publication 2022-04
    Size p. 111013
    Publishing place Elsevier Ltd
    Document type Article ; Online
    ZDB-ID 1111695-x
    ISSN 1873-7145 ; 0963-9969
    ISSN (online) 1873-7145
    ISSN 0963-9969
    DOI 10.1016/j.foodres.2022.111013
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Low-shear modeled microgravity affects metabolic networks of Escherichia coli O157:H7 EDL933: Further insights into space-microbiology consequences.

    Kim, H W / Park, B H / Park, H / Baek, B C / Choi, I G / Rhee, M S

    Food research international (Ottawa, Ont.)

    2022  Volume 154, Page(s) 111013

    Abstract: Escherichia coli O157:H7 EDL933 exposed to low-shear modeled microgravity (LSMMG) and normal gravity (NG) was used for a transcriptomic analysis. The modified Gompertz model ( ... ...

    Abstract Escherichia coli O157:H7 EDL933 exposed to low-shear modeled microgravity (LSMMG) and normal gravity (NG) was used for a transcriptomic analysis. The modified Gompertz model (R
    MeSH term(s) Bacterial Toxins/metabolism ; Escherichia coli O157/metabolism ; Escherichia coli Proteins/metabolism ; Metabolic Networks and Pathways ; RNA-Binding Proteins/metabolism ; Repressor Proteins/metabolism ; Shiga Toxin 1 ; Weightlessness
    Chemical Substances Bacterial Toxins ; CsrA protein, E coli ; Escherichia coli Proteins ; HokB protein, E coli ; RNA-Binding Proteins ; Repressor Proteins ; Shiga Toxin 1
    Language English
    Publishing date 2022-02-16
    Publishing country Canada
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1111695-x
    ISSN 1873-7145 ; 0963-9969
    ISSN (online) 1873-7145
    ISSN 0963-9969
    DOI 10.1016/j.foodres.2022.111013
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Quantifying dog meniscal volume at 1.5T and 3.0T MRI

    Park, B.H / Marches, S / Eichelberger, B.M / Winter, M.D / Pozzi, A / Banks, S.A

    Research in veterinary science. 2020 Feb., v. 128

    2020  

    Abstract: The dog has been used extensively as an experimental model to study meniscal treatments such as meniscectomy, meniscal repair and regeneration. Accurate quantification of meniscal size and morphology are a crucial step for developing models of the ... ...

    Abstract The dog has been used extensively as an experimental model to study meniscal treatments such as meniscectomy, meniscal repair and regeneration. Accurate quantification of meniscal size and morphology are a crucial step for developing models of the meniscus. 3.0T magnetic resonance imaging (MRI) has been found to be highly accurate in analyzing the meniscus in both clinical and research fields. However, 3.0T MRI systems are still uncommonly used in veterinary medicine. The goal of the study was to compare meniscal volume measurements from 1.5T MRI system with 3.0T MRI system using proton density sequence, a clinically relevant protocol. The MR images were segmented to reconstruct 3D surface representations of both medial and lateral menisci to compare the meniscal volumes measurements. Average volume differences were 8.8% (P=0.42) and 8.9% (P=0.535) for medial and lateral meniscus, respectively. No significant volume differences were found between 1.5T and 3.0T magnetic resonance (MR) measurements, with high Pearson’s correlation coefficient of r > 0.8 and the intraclass correlation coefficient (ICC) of 0.899. For inter- and intra-observer reproducibility, high correlation (ICC = 0.942 and 0.814) was observed, but with high variability for intra-observer reproducibility (lower bound 0.478, upper bound 0.949). We have shown that common clinical MR scanners and pulse sequences can be used to quantify dogs’ meniscal volumes with good reproducibility. We believe that repeatable measurements of meniscal volumes using MR may provide a useful capability for assessment of postoperative results following meniscal treatments such as meniscectomy and meniscal regeneration.
    Keywords animal models ; dogs ; magnetic resonance imaging ; magnetism ; scanners ; veterinary medicine
    Language English
    Dates of publication 2020-02
    Size p. 236-241.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 840961-4
    ISSN 1532-2661 ; 0034-5288
    ISSN (online) 1532-2661
    ISSN 0034-5288
    DOI 10.1016/j.rvsc.2019.12.005
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Quantifying dog meniscal volume at 1.5T and 3.0T MRI.

    Park, B H / Marches, S / Eichelberger, B M / Winter, M D / Pozzi, A / Banks, S A

    Research in veterinary science

    2019  Volume 128, Page(s) 236–241

    Abstract: The dog has been used extensively as an experimental model to study meniscal treatments such as meniscectomy, meniscal repair and regeneration. Accurate quantification of meniscal size and morphology are a crucial step for developing models of the ... ...

    Abstract The dog has been used extensively as an experimental model to study meniscal treatments such as meniscectomy, meniscal repair and regeneration. Accurate quantification of meniscal size and morphology are a crucial step for developing models of the meniscus. 3.0T magnetic resonance imaging (MRI) has been found to be highly accurate in analyzing the meniscus in both clinical and research fields. However, 3.0T MRI systems are still uncommonly used in veterinary medicine. The goal of the study was to compare meniscal volume measurements from 1.5T MRI system with 3.0T MRI system using proton density sequence, a clinically relevant protocol. The MR images were segmented to reconstruct 3D surface representations of both medial and lateral menisci to compare the meniscal volumes measurements. Average volume differences were 8.8% (P=0.42) and 8.9% (P=0.535) for medial and lateral meniscus, respectively. No significant volume differences were found between 1.5T and 3.0T magnetic resonance (MR) measurements, with high Pearson's correlation coefficient of r > 0.8 and the intraclass correlation coefficient (ICC) of 0.899. For inter- and intra-observer reproducibility, high correlation (ICC = 0.942 and 0.814) was observed, but with high variability for intra-observer reproducibility (lower bound 0.478, upper bound 0.949). We have shown that common clinical MR scanners and pulse sequences can be used to quantify dogs' meniscal volumes with good reproducibility. We believe that repeatable measurements of meniscal volumes using MR may provide a useful capability for assessment of postoperative results following meniscal treatments such as meniscectomy and meniscal regeneration.
    MeSH term(s) Animals ; Dogs ; Magnetic Resonance Imaging/methods ; Magnetic Resonance Imaging/veterinary ; Menisci, Tibial/anatomy & histology ; Menisci, Tibial/surgery ; Tibial Meniscus Injuries/surgery ; Tibial Meniscus Injuries/veterinary
    Language English
    Publishing date 2019-12-02
    Publishing country England
    Document type Journal Article
    ZDB-ID 840961-4
    ISSN 1532-2661 ; 0034-5288
    ISSN (online) 1532-2661
    ISSN 0034-5288
    DOI 10.1016/j.rvsc.2019.12.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Fast-ion D

    Yoo, J W / Kim, J / Lee, M W / Kang, J / Ko, W-H / Oh, S G / Ko, J / Lee, J H / Nam, Y U / Jung, L / Park, B H / Yoon, S W

    The Review of scientific instruments

    2021  Volume 92, Issue 4, Page(s) 43504

    Abstract: A fast-ion Dα (FIDA) diagnostics system was installed for core and edge measurements on KSTAR. This system has two tangential FIDA arrays that cover both blue- and redshifted Dα lines (cold: 656.09 nm) in active views along the neutral beam 1 A ... ...

    Abstract A fast-ion Dα (FIDA) diagnostics system was installed for core and edge measurements on KSTAR. This system has two tangential FIDA arrays that cover both blue- and redshifted Dα lines (cold: 656.09 nm) in active views along the neutral beam 1 A centerline. The spectral band is 647-662.5 nm, and it covers the Doppler shift of the emission from the maximum energy of the neutral beam (100 keV). A curved filter strip with a motorized stage adequately prevents saturation of the electron multiplying charge-coupled device signal by the cold Dα line from the plasma edge. From comparisons of the measured spectra and FIDASIM modeling code, the FIDA spectra are well matched quantitatively. Moreover, the first measurements show that the FIDA radiance agrees with the neutron rate in the time trace during external heating and perturbation. In addition, responses are observed in the core FIDA radiance during the edge-localized mode cycle.
    Language English
    Publishing date 2021-07-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/5.0040559
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Mental health literacy in korean older adults: A cross-sectional survey.

    Kim, Y S / Lee, H Y / Lee, M H / Simms, T / Park, B H

    Journal of psychiatric and mental health nursing

    2017  Volume 24, Issue 7, Page(s) 523–533

    Abstract: WHAT IS KNOWN ON THE SUBJECT?: Mental health literacy is a fairly new concept, first introduced in 1997. It refers to what people know and believe about mental health disorders. People's knowledge and beliefs help them to recognize, manage and prevent ... ...

    Abstract WHAT IS KNOWN ON THE SUBJECT?: Mental health literacy is a fairly new concept, first introduced in 1997. It refers to what people know and believe about mental health disorders. People's knowledge and beliefs help them to recognize, manage and prevent mental disorders. Generally, older adults have lower health literacy compared to young and middle-aged adults. WHAT THIS STUDY ADDS TO EXISTING KNOWLEDGE?: This is the first study on the mental health literacy of Korean older adults. This study looks beyond peoples' ability to recognize mental health disorders and their opinions about them. It identifies factors that are associated with mental health literacy (level of education and social support, the number of people in one's social circles and how individuals rate their health). WHAT ARE THE IMPLICATIONS FOR PRACTICE?: Older adults might get more out of mental health literacy programmes in group or social settings. Programmes that use older adult peer educators/supporters, such as the "older people's champions" of the Healthy Passport programme in England, might make the programmes more effective. Mental health campaigns, such as Australia's beyondblue, might increase mental health literacy of older adults.
    Abstract: Introduction Korea is experiencing rapid population ageing, spurring an increased need for mental health services for the elderly. Approximately one-third of Korean older adults experience depressive symptoms, and Korea has the highest elder suicide rate among 34 developed nations. Mental health literacy is an important component of promoting mental health, yet studies on the concept have been conducted in few countries. Aim This study examines the level of mental health literacy among Korean older adults and identifies factors associated with their mental health literacy. Method A cross-sectional survey was conducted with 596 community-dwelling Korean adults aged 65 and older. Andersen's Behavioral Model of Health Services Use framed the study. Results Overall, participants displayed low levels of mental health literacy. They had difficulty recognizing their mental health issues and had limited knowledge about self-help strategies. Mental health literacy was positively associated with education, social support, social network and health status. Discussion and Implications This study highlights a need for efforts to increase mental health literacy among Korean older adults. Strategies that have the potential to empower this population to proactively attend to their mental health include community-based education and national mental health campaigns.
    Language English
    Publishing date 2017-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 1328479-4
    ISSN 1365-2850 ; 1351-0126
    ISSN (online) 1365-2850
    ISSN 1351-0126
    DOI 10.1111/jpm.12395
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Integration of reverse transcriptase loop-mediated isothermal amplification with an immunochromatographic strip on a centrifugal microdevice for influenza A virus identification.

    Jung, J H / Park, B H / Oh, S J / Choi, G / Seo, T S

    Lab on a chip

    2015  Volume 15, Issue 3, Page(s) 718–725

    Abstract: A novel centrifugal microdevice which could perform reverse transcriptase loop-mediated isothermal amplification (RT-LAMP) and immunochromatographic strip (ICS) based amplicon detection was demonstrated for simple and cost-effective influenza A virus ... ...

    Abstract A novel centrifugal microdevice which could perform reverse transcriptase loop-mediated isothermal amplification (RT-LAMP) and immunochromatographic strip (ICS) based amplicon detection was demonstrated for simple and cost-effective influenza A virus identification. The proposed centrifugal microdevice consists of the sample and running buffer loading reservoirs, the RT-LAMP chamber, and the ICS for detecting gene expression. The entire process could be completed sequentially and automatically by simply controlling the rotation speed and by optimizing the microfluidic design. Monoplex and multiplex RT-LAMP reactions targeting H1 and/or M gene were executed at 66 °C for 40 min, and the resultant amplicons were successfully analysed on the ICS within 15 min. Influenza A H1N1 virus was subtyped by detecting H1 and M gene on the ICS even with 10 copies of viral RNAs. Highly specific and multiplex viral typing of the integrated RT-LAMP-ICS microdevice was also demonstrated. The combination of the rapid isothermal amplification with the simple colorimetric detection on a strip in a single centrifugal microdevice will provide an advanced genetic analysis platform in the field of on-site pathogen diagnostics.
    MeSH term(s) Centrifugation/instrumentation ; Gene Expression ; Immunochromatography ; Influenza A Virus, H1N1 Subtype/genetics ; Influenza A Virus, H1N1 Subtype/isolation & purification ; Nucleic Acid Amplification Techniques/instrumentation ; Reverse Transcription
    Language English
    Publishing date 2015-02-07
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2056646-3
    ISSN 1473-0189 ; 1473-0197
    ISSN (online) 1473-0189
    ISSN 1473-0197
    DOI 10.1039/c4lc01033g
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Late diagnosis of Henoch-Schönlein purpura following detection of jejunal ischemia on conventional endoscopy.

    Kim, E H / Park, B H / Lim, J W / Jung, S W

    Endoscopy

    2012  Volume 44 Suppl 2 UCTN, Page(s) E393–4

    MeSH term(s) Abdominal Pain/etiology ; Adult ; Delayed Diagnosis ; Diagnosis, Differential ; Endoscopy ; Enteritis/diagnosis ; Gastric Bypass ; Humans ; Ischemia/etiology ; Jejunum/blood supply ; Jejunum/surgery ; Laparotomy ; Male ; Purpura, Schoenlein-Henoch/complications ; Purpura, Schoenlein-Henoch/diagnosis ; Tomography, X-Ray Computed
    Language English
    Publishing date 2012
    Publishing country Germany
    Document type Case Reports ; Journal Article
    ZDB-ID 80120-3
    ISSN 1438-8812 ; 0013-726X
    ISSN (online) 1438-8812
    ISSN 0013-726X
    DOI 10.1055/s-0032-1310247
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Gene expression and fast construction of distributed evolutionary representation.

    Kargupta, H / Park, B H

    Evolutionary computation

    2001  Volume 9, Issue 1, Page(s) 43–69

    Abstract: The gene expression process in nature produces different proteins in different cells from different portions of the DNA. Since proteins control almost every important activity in a living organism, at an abstract level, gene expression can be viewed as a ...

    Abstract The gene expression process in nature produces different proteins in different cells from different portions of the DNA. Since proteins control almost every important activity in a living organism, at an abstract level, gene expression can be viewed as a process that evaluates the merit or "fitness" of the DNA. This distributed evaluation of the DNA would not be possible without a decomposed representation of the fitness function defined over the DNAs. This paper argues that, unless the living body was provided with such a representation, we have every reason to believe that it must have an efficient mechanism to construct this distributed representation. This paper demonstrates polynomial-time computability of such a representation by proposing a class of efficient algorithms. The main contribution of this paper is two-fold. On the algorithmic side, it offers a way to scale up evolutionary search by detecting the underlying structure of the search space. On the biological side, it proves that the distributed representation of the evolutionary fitness function in gene expression can be computed in polynomial-time. It advances our understanding about the representation construction in gene expression from the perspective of computing. It also presents experimental results supporting the theoretical performance of the proposed algorithms.
    MeSH term(s) Algorithms ; Biological Evolution ; Computer Simulation ; Forecasting ; Gene Expression ; Genetic Linkage ; Models, Biological
    Language English
    Publishing date 2001
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Review
    ZDB-ID 2022147-2
    ISSN 1530-9304 ; 1063-6560
    ISSN (online) 1530-9304
    ISSN 1063-6560
    DOI 10.1162/10636560151075112
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Interleukin-1β increases Angptl4 (FIAF) expression via the JNK signaling pathway in osteoblastic MC3T3-E1 cells.

    Noh, J M / Shen, C / Kim, S J / Kim, M R / Kim, S H / Kim, J H / Park, B H / Park, J H

    Experimental and clinical endocrinology & diabetes : official journal, German Society of Endocrinology [and] German Diabetes Association

    2015  Volume 123, Issue 8, Page(s) 445–460

    Abstract: Angiopoietin-like protein 4 (Angptl4), also known as fasting-induced adiopogenic factor (FIAF), has recently been reported to influence bone metabolism. However, there have been few studies on regulatory factors other than hypoxia for Angptl4 in bone, ... ...

    Abstract Angiopoietin-like protein 4 (Angptl4), also known as fasting-induced adiopogenic factor (FIAF), has recently been reported to influence bone metabolism. However, there have been few studies on regulatory factors other than hypoxia for Angptl4 in bone, and particularly in osteoblasts. Expression of interleukin-1β (IL-1β), a proinflammatory cytokine, is increased in serum or bone microenvironments in inflammatory bone diseases or estrogen deficient-conditions. The present study was conducted to determine whether Angptl4 expression in osteoblasts is affected by IL-1β and investigate its involvement in MAP kinase signaling pathways. Angptl4 RNA levels were increased by IL-1β treatment in murine MC3T3-E1 osteoblastic cells. Western blotting and immunofluorescent staining showed a corresponding increase in Angptl4 protein. IL-1β treatment of osteoblasts induced phosphorylation of mitogen-activated protein kinases (MAPKs) including extracellular regulated kinases (ERKs), p38, and c-Jun N-terminal kinase (JNK). Furthermore, SP600125, an inhibitor of JNK, significantly blocked the upregulation of Angptl4 by IL-1β. In contrast, treatment with an inhibitor of p38 MAP kinase (SB203580) or an ERK inhibitor (PD98059) produced responses similar to those seen with the DMSO control. Taken together, these results suggest that IL-1β increases Angptl4 expression through a mechanism dependent on the JNK-MAPK signaling pathway in MC3T3-E1 cells.
    MeSH term(s) Angiopoietin-like 4 Protein ; Angiopoietins/biosynthesis ; Animals ; Cell Line ; Gene Expression Regulation/drug effects ; Gene Expression Regulation/physiology ; Interleukin-1beta/metabolism ; MAP Kinase Kinase 4/antagonists & inhibitors ; MAP Kinase Kinase 4/metabolism ; MAP Kinase Signaling System/drug effects ; MAP Kinase Signaling System/physiology ; Mice ; Osteoblasts/cytology ; Osteoblasts/metabolism ; Protein Kinase Inhibitors/pharmacology
    Chemical Substances Angiopoietin-like 4 Protein ; Angiopoietins ; Angptl4 protein, mouse ; IL1B protein, mouse ; Interleukin-1beta ; Protein Kinase Inhibitors ; MAP Kinase Kinase 4 (EC 2.7.12.2)
    Language English
    Publishing date 2015-09
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1225416-2
    ISSN 1439-3646 ; 0947-7349
    ISSN (online) 1439-3646
    ISSN 0947-7349
    DOI 10.1055/s-0035-1554624
    Database MEDical Literature Analysis and Retrieval System OnLINE

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