259 results on '"Woo-Jung Park"'
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2. Probiotic Properties and Safety Evaluation of Lactobacillus plantarum HY7718 with Superior Storage Stability Isolated from Fermented Squid
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Hyeonji Kim, Myeong-Seok Yoo, Hyejin Jeon, Jae-Jung Shim, Woo-Jung Park, Joo-Yun Kim, and Jung-Lyoul Lee
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fermented foods ,probiotics ,Lactobacillus plantarum ,storage stability ,tight junction ,Biology (General) ,QH301-705.5 - Abstract
The aim of this study was to identify new potential probiotics with improved storage stability and to evaluate their efficacy and safety. Sixty lactic acid bacteria strains were isolated from Korean traditional fermented foods, and their survival was tested under extreme conditions. Lactobacillus plantarum HY7718 (HY7718) showed the greatest stability during storage. HY7718 also showed a stable growth curve under industrial conditions. Whole genome sequencing revealed that the HY7718 genome comprises 3.26 Mbp, with 44.5% G + C content, and 3056 annotated Protein-coding DNA sequences (CDSs). HY7718 adhered to intestinal epithelial cells and was tolerant to gastric fluids. Additionally, HY7718 exhibited no hemolytic activity and was not resistant to antibiotics, confirming that it has probiotic properties and is safe for consumption. Additionally, we evaluated its effects on intestinal health using TNF-induced Caco-2 cells. HY7718 restored the expression of tight junction proteins such as zonular occludens (ZO-1, ZO-2), occludin (OCLN), and claudins (CLDN1, CLDN4), and regulated the expression of myosin light-chain kinase (MLCK), Elk-1, and nuclear factor kappa B subunit 1 (NFKB1). Moreover, HY7718 reduced the secretion of proinflammatory cytokines such as interleukin-6 (IL-6) and IL-8, as well as reducing the levels of peroxide-induced reactive oxygen species. In conclusion, HY7718 has probiotic properties, is safe, is stable under extreme storage conditions, and exerts positive effects on intestinal cells. These results suggest that L. plantarum HY7718 is a potential probiotic for use as a functional supplement in the food industry.
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- 2023
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3. The structure of a novel antibody against the spike protein inhibits Middle East respiratory syndrome coronavirus infections
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Tae-Ho Jang, Woo-Jung Park, Hansaem Lee, Hye-Min Woo, So-young Lee, Kyung-Chang Kim, Sung Soon Kim, Eunmi Hong, Jaeyoung Song, and Joo-Yeon Lee
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Medicine ,Science - Abstract
Abstract Middle East respiratory syndrome coronavirus (MERS-CoV) is a zoonotic virus, responsible for outbreaks of a severe respiratory illness in humans with a fatality rate of 30%. Currently, there are no vaccines or United States food and drug administration (FDA)-approved therapeutics for humans. The spike protein displayed on the surface of MERS-CoV functions in the attachment and fusion of virions to host cellular membranes and is the target of the host antibody response. Here, we provide a molecular method for neutralizing MERS-CoV through potent antibody-mediated targeting of the receptor-binding subdomain (RBD) of the spike protein. The structural characterization of the neutralizing antibody (KNIH90-F1) complexed with RBD using X-ray crystallography revealed three critical epitopes (D509, R511, and E513) in the RBD region of the spike protein. Further investigation of MERS-CoV mutants that escaped neutralization by the antibody supported the identification of these epitopes in the RBD region. The neutralizing activity of this antibody is solely provided by these specific molecular structures. This work should contribute to the development of vaccines or therapeutic antibodies for MERS-CoV.
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- 2022
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4. Evaluation of immunogenicity-induced DNA vaccines against different SARS-CoV-2 variants.
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Se Eun Kim, So Hee Park, Woo-Jung Park, Gayeong Kim, Seo Yeon Kim, Hyeran Won, Yun-Ho Hwang, Heeji Lim, Hyeon Guk Kim, You-Jin Kim, Dokeun Kim, and Jung-Ah Lee
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Medicine ,Science - Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) emerged in 2019 and caused the coronavirus disease 2019 (COVID-19) pandemic worldwide. As of September 2023, the number of confirmed coronavirus cases has reached over 770 million and caused nearly 7 million deaths. The World Health Organization assigned and informed the characterization of variants of concern (VOCs) to help control the COVID-19 pandemic through global monitoring of circulating viruses. Although many vaccines have been proposed, developing an effective vaccine against variants is still essential to reach the endemic stage of COVID-19. We designed five DNA vaccine candidates composed of the first isolated genotype and major SARS-CoV-2 strains from isolated Korean patients classified as VOCs, such as Alpha, Beta, Gamma, and Delta. To evaluate the immunogenicity of each genotype via homologous and heterologous vaccination, mice were immunized twice within a 3-week interval, and the blood and spleen were collected 1 week after the final vaccination to analyze the immune responses. The group vaccinated with DNA vaccine candidates based on the S genotype and the Alpha and Beta variants elicited both humoral and cellular immune responses, with higher total IgG levels and neutralizing antibody responses than the other groups. In particular, the vaccine candidate based on the Alpha variant induced a highly diverse cytokine response. Additionally, we found that the group subjected to homologous vaccination with the S genotype and heterologous vaccination with S/Alpha induced high total IgG levels and a neutralization antibody response. Homologous vaccination with the S genotype and heterologous vaccination with S/Alpha and S/Beta significantly induced IFN-γ immune responses. The immunogenicity after homologous vaccination with S and Alpha and heterologous vaccination with the S/Alpha candidate was better than that of the other groups, indicating the potential for developing novel DNA vaccines against different SARS-CoV-2 variants.
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- 2023
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5. Time Course Evaluation of Enzyme-Linked Immunosorbent Assays Based on Cell-Free Recombinant Proteins for Detection of Antibodies against Middle East Respiratory Syndrome Coronavirus
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Jun Won Kim, Woo-Jung Park, Sung Soon Kim, Joo-Yeon Lee, and Jeong-Sun Yang
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Middle East respiratory syndrome ,serological tests ,coronavirus ,Microbiology ,QR1-502 - Published
- 2022
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6. A New Wave of Targeting ‘Undruggable’ Wnt Signaling for Cancer Therapy: Challenges and Opportunities
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Woo-Jung Park and Moon Jong Kim
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Wnt signaling ,β-catenin ,targeted cancer therapy ,PROTAC ,antibody–drug conjugate (ADC) ,anti-sense oligonucleotide (ASO) ,Cytology ,QH573-671 - Abstract
Aberrant Wnt signaling activation is frequently observed in many cancers. The mutation acquisition of Wnt signaling leads to tumorigenesis, whereas the inhibition of Wnt signaling robustly suppresses tumor development in various in vivo models. Based on the excellent preclinical effect of targeting Wnt signaling, over the past 40 years, numerous Wnt-targeted therapies have been investigated for cancer treatment. However, Wnt signaling-targeting drugs are still not clinically available. A major obstacle to Wnt targeting is the concomitant side effects during treatment due to the pleiotropic role of Wnt signaling in development, tissue homeostasis, and stem cells. Additionally, the complexity of the Wnt signaling cascades across different cancer contexts hinders the development of optimized targeted therapies. Although the therapeutic targeting of Wnt signaling remains challenging, alternative strategies have been continuously developed alongside technological advances. In this review, we give an overview of current Wnt targeting strategies and discuss recent promising trials that have the potential to be clinically realized based on their mechanism of action. Furthermore, we highlight new waves of Wnt targeting that combine recently developed technologies such as PROTAC/molecular glue, antibody–drug conjugates (ADC), and anti-sense oligonucleotides (ASO), which may provide us with new opportunities to target ‘undruggable’ Wnt signaling.
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- 2023
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7. An infectious cDNA clone of a growth attenuated Korean isolate of MERS coronavirus KNIH002 in clade B
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Minwoo Kim, Hee Cho, Seung-Hoon Lee, Woo-Jung Park, Jeong-Min Kim, Jae-Su Moon, Geon-Woo Kim, Wooseong Lee, Hae-Gwang Jung, Jeong-Sun Yang, Jang-Hoon Choi, Joo-Yeon Lee, Sung Soon Kim, and Jong-Won Oh
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MERS-CoV ,clade B Korean isolate ,infectious cDNA clone ,growth attenuation ,ORF5 deletion variants ,Infectious and parasitic diseases ,RC109-216 ,Microbiology ,QR1-502 - Abstract
ABSTRACTThe MERS-CoV isolated during the 2015 nosocomial outbreak in Korea showed distinctive differences in mortality and transmission patterns compared to the prototype MERS-CoV EMC strain belonging to clade A. We established a BAC-based reverse genetics system for a Korean isolate of MERS-CoV KNIH002 in the clade B phylogenetically far from the EMC strain, and generated a recombinant MERS-CoV expressing red fluorescent protein. The virus rescued from the infectious clone and KNIH002 strain displayed growth attenuation compared to the EMC strain. Consecutive passages of the rescued virus rapidly generated various ORF5 variants, highlighting its genetic instability and calling for caution in the use of repeatedly passaged virus in pathogenesis studies and for evaluation of control measures against MERS-CoV. The infectious clone for the KNIH002 in contemporary epidemic clade B would be useful for better understanding of a functional link between molecular evolution and pathophysiology of MERS-CoV by comparative studies with EMC strain.
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- 2020
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8. In Vitro Immune-Enhancement and Anti-Inflammatory Effects of Fatty Acids Extracted from the Halocynthia aurantium Gonad on RAW264.7 Macrophages
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Junhyeok Lim, Weerawan Rod-in, Chaiwat Monmai, A-yeong Jang, JeongUn Choi, and Woo-Jung Park
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immunomodulation ,macrophages ,fatty acid ,Halocynthia aurantium ,NF-κB ,MAPK ,Nutrition. Foods and food supply ,TX341-641 - Abstract
Fatty acids extracted from the Halocynthia aurantium gonad (HAGF) were shown to be primarily composed of the highest concentrations of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) at 41% and 17% of total fatty acids, respectively. In the present study, HAGF were examined for their immunostimulant and anti-inflammatory effects on RAW264.7 macrophage cells. HAGF were found to significantly boost nitric oxide (NO) production and increase the levels of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), interleukin-1β (IL-1β), IL-6, and tumor necrosis factor (TNF)-α expression in a dose-dependent manner. Moreover, the phosphorylation of c-Jun N-terminal kinase/stress-activated protein kinase (JNK), extracellular signal-regulated kinase (ERK), p38, and nuclear factor κB (NF-κB) p65 was up-regulated by the stimulation of RAW264.7 cells with HAGF. When lipopolysaccharide (LPS)—stimulated the macrophages, they also exhibited anti-inflammatory activity via decreasing NO production and immune-related gene expression, Cluster of differentiation (CD) 86 expression, and protein levels in the NF-κB and mitogen-activated protein kinases (MAPK) signaling pathways. Overall, these results indicate that HAGF exert immune-modulatory effects in macrophages.
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- 2022
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9. Neutralizing Antibodies to Severe Fever With Thrombocytopenia Syndrome Virus Among Survivors, Non-Survivors and Healthy Residents in South Korea
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Jeong Rae Yoo, Jae-Yong Kim, Sang Taek Heo, Jihye Kim, Hyeong-Jun Park, Joo-Yeon Lee, Hee-Young Lim, Woo-Jung Park, Nam-Hyuk Cho, Jung Mogg Kim, Jae-Hwan Nam, and Keun Hwa Lee
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SFTSV ,neutralizing antibodies ,survivors ,non-survivors ,healthy residents ,South Korea ,Microbiology ,QR1-502 - Abstract
Severe fever with thrombocytopenia syndrome (SFTS), a newly emerging tick-borne viral disease, has been detected in Asia since 2009, and person-to-person transmission is possible. SFTS is characterized by atypical signs, including mild to severe febrile illness similar to that associated with hemorrhagic fever, with 16.2 to 30% mortality. We found that the titers of neutralizing antibodies, play an important role in protective immunity, to SFTS virus (SFTSV) in survivors and healthy residents who lived in endemic areas and who were positive for SFTSV IgG, were higher than those in non-survivor patients. Moreover, the titers were maintained in surviving patients and healthy residents but not in non-surviving patients in South Korea.
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- 2021
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10. Characterization of a human monoclonal antibody generated from a B-cell specific for a prefusion-stabilized spike protein of Middle East respiratory syndrome coronavirus.
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Jang-Hoon Choi, Hye-Min Woo, Tae-Young Lee, So-Young Lee, Sang-Mu Shim, Woo-Jung Park, Jeong-Sun Yang, Joo Ae Kim, Mi-Ran Yun, Dae-Won Kim, Sung Soon Kim, Yi Zhang, Wei Shi, Lingshu Wang, Barney S Graham, John R Mascola, Nanshuang Wang, Jason S McLellan, Joo-Yeon Lee, and Hansaem Lee
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Medicine ,Science - Abstract
Middle East respiratory syndrome coronavirus (MERS-CoV) causes severe respiratory infection and continues to infect humans, thereby contributing to a high mortality rate (34.3% in 2019). In the absence of an available licensed vaccine and antiviral agent, therapeutic human antibodies have been suggested as candidates for treatment. In this study, human monoclonal antibodies were isolated by sorting B cells from patient's PBMC cells with prefusion stabilized spike (S) probes and a direct immunoglobulin cloning strategy. We identified six receptor-binding domain (RBD)-specific and five S1 (non-RBD)-specific antibodies, among which, only the RBD-specific antibodies showed high neutralizing potency (IC50 0.006-1.787 μg/ml) as well as high affinity to RBD. Notably, passive immunization using a highly potent antibody (KNIH90-F1) at a relatively low dose (2 mg/kg) completely protected transgenic mice expressing human DPP4 against MERS-CoV lethal challenge. These results suggested that human monoclonal antibodies isolated by using the rationally designed prefusion MERS-CoV S probe could be considered potential candidates for the development of therapeutic and/or prophylactic antiviral agents for MERS-CoV human infection.
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- 2020
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11. The Effects of Atorvastatin on Global Cerebral Ischemia-Induced Neuronal Death
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A Ra Kho, Dae Ki Hong, Beom Seok Kang, Woo-Jung Park, Kyung Chan Choi, Kyoung-Ha Park, and Sang Won Suh
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global cerebral ischemia ,neuronal death ,oxidative stress ,inflammation ,vasa vasorum ,endothelial cell damage ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
(1) Background and Purpose: Global cerebral ischemia-induced severe hypoxic brain damage is one of the main causes of mortality and long-term neurologic disability even after receiving early blood reperfusion. This study aimed to test the hypothesis that atorvastatin potentially has neuroprotective effects in global cerebral ischemia (GCI). (2) Methods: We performed two sets of experiments, analyzing acute (1-week) and chronic (4-week) treatments. For the vehicle (Veh) and statin treatments, 1 mL of 0.9% saline and 5 mg/kg of atorvastatin (ATOR) were administered orally. For histological analysis, we used the following staining protocols: Fluoro-Jade B and NeuN, 4-hydroxynonenal, CD11b and GFAP, IgG, SMI71, and vWF. Finally, we evaluated the cognitive function with a battery of behavioral tests. (3) Results: The GCI-ATOR group showed significantly reduced neuronal death, oxidative stress, inflammation, and BBB disruption compared with the GCI-Veh group. Moreover, the GCI-ATOR group showed decreased endothelial damage and VV proliferation and had significantly improved cognitive function compared with the GCI-Veh group in both models. (4) Conclusions: ATOR has neuroprotective effects and helps recover the cognitive function after GCI in rats. Therefore, administration of atorvastatin may be a therapeutic option in managing GCI after CA.
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- 2021
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12. Asymptomatic Middle East Respiratory Syndrome coronavirus infection using a serologic survey in Korea
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Yeong-jun Song, Jeong-Sun Yang, Hee Jung Yoon, Hae-Sung Nam, Soon Young Lee, Hae-Kwan Cheong, Woo-Jung Park, Sung Han Park, Bo Youl Choi, Sung Soon Kim, and Moran Ki
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Asymptomatic infection ,Epidemiology ,Middle East Respiratory Syndrome coronavirus ,Nosocomial infections ,Outbreak ,Enzyme-linked immunespecific assay ,Medicine - Abstract
OBJECTIVES The rates of asymptomatic infection with Middle East Respiratory Syndrome (MERS) coronavirus vary. A serologic study was conducted to determine the asymptomatic MERS infection rate in healthcare workers and non-healthcare workers by exposure status. METHODS Study participants were selected from contacts of MERS patients based on a priority system in 4 regions strongly affected by the 2015 MERS outbreak. A sero-epidemiological survey was performed in 1,610 contacts (average duration from exposure to test, 4.8 months), and the collected sera were tested using an enzyme-linked immunespecific assay (ELISA), immunofluorescence assay (IFA), and plaque reduction neutralization antibody test (PRNT). Among the 1,610 contacts, there were 7 ELISA-positive cases, of which 1 exhibited positive IFA and PRNT results. RESULTS The asymptomatic infection rate was 0.060% (95% confidence interval, 0.002 to 0.346). The asymptomatic MERS case was a patient who had been hospitalized with patient zero on the same floor of the hospital at the same time. The case was quarantined at home for 2 weeks after discharge, and had underlying diseases, including hypertension, angina, and degenerative arthritis. CONCLUSIONS The asymptomatic infection was acquired via healthcare-associated transmission. Thus, it is necessary to extend serologic studies to include inpatient contacts who have no symptoms.
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- 2018
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13. Biodegradable Polymer Versus Polymer-Free Ultrathin Sirolimus-Eluting Stents: Analysis of the Stent Arm Registry From the HOST-IDEA Randomized Trial.
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Jung-Kyu Han, Seokhun Yang, Doyeon Hwang, Sang-Hyeon Park, Jeehoon Kang, Han-Mo Yang, Kyung Woo Park, Hyun-Jae Kang, Bon-Kwon Koo, Jin-Man Cho, Janghyun Cho, Duk Won Bang, Jae-Hwan Lee, Han Cheol Lee, Kyung-Jin Kim, Woo Jung Chun, Won-Woo Seo, Woo-Jung Park, Sang Min Park, and Jin Won Kim
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BACKGROUND: The efficacy and safety of each third-generation drug-eluting stent with ultrathin struts and advanced polymer technology remain unclear. We investigated the clinical outcomes of percutaneous coronary intervention using the Coroflex ISAR polymer-free sirolimus-eluting stent (SES) or Orsiro biodegradable polymer SES. METHODS: The HOST-IDEA trial (Harmonizing Optimal Strategy for Treatment of Coronary Artery Stenosis-Coronary Intervention With Next-Generation Drug-Eluting Stent Platforms and Abbreviated Dual Antiplatelet Therapy), initially designed with a 2×2 factorial approach, sought to randomize patients undergoing percutaneous coronary intervention based on dual antiplatelet therapy duration (3 versus 12 months) and stent type (Coroflex ISAR versus Orsiro). Despite randomizing 2013 patients for dual antiplatelet therapy duration, the stent arm transitioned to a registry format during the trial. Among these, 328 individuals (16.3%) were randomized for Coroflex ISAR or Orsiro SES, while 1685 (83.7%) underwent percutaneous coronary intervention without stent-type randomization. In this study, the Coroflex ISAR (n=559) and Orsiro groups (n=1449) were matched using a propensity score. The prespecified primary end point was target lesion failure, a composite of cardiac death, target vessel myocardial infarction, and clinically driven target lesion revascularization at 12 months. RESULTS: The baseline patient and procedural characteristics were well balanced between the Coroflex ISAR and Orsiro groups after propensity score matching (n=559, each group). The Coroflex ISAR group was significantly associated with a higher rate of target lesion failure, mainly driven by clinically driven target lesion revascularization, compared with the Orsiro group (3.4% versus 1.1%; hazard ratio, 3.21 [95% CI, 1.28-8.05]; P=0.01). A higher risk of target lesion failure in the Coroflex ISAR group was consistently observed across various subgroups. The rates of any bleeding (hazard ratio, 0.85 [95% CI, 0.51-1.40]; P=0.52) and major bleeding (hazard ratio, 1.58 [95% CI, 0.61-4.08]; P=0.34) were comparable between the 2 groups. CONCLUSIONS: In this propensity score-matched analysis of the stent arm registry from the HOST-IDEA trial, the Orsiro SES was associated with significantly better outcomes in terms of 1-year target lesion failure, mainly driven by clinically driven target lesion revascularization, than the Coroflex ISAR SES. [ABSTRACT FROM AUTHOR]
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- 2024
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14. Distributed GM-CPHD Filter Based on Generalized Inverse Covariance Intersection
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Woo Jung Park and Chan Gook Park
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Multi-target tracking ,GM-CPHD filter ,inverse covariance intersection ,covariance inflation ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
In this paper, we propose a distributed Gaussian mixture cardinalized probability hypothesis density (GM-CPHD) filter based on generalized inverse covariance intersection that fuses multiple node information effectively for multi-target tracking applications. Covariance intersection (CI) is a well-known fusion method that produces a conservative estimate of the joint covariance regardless of the actual correlation between the different nodes. Inverse covariance intersection (ICI) is the updated version to obtain fusion results that guarantee consistency and less conservative than CI. However, the ICI is not extended to multi-sensor multi-target tracking system yet. Since the ICI formula can be re-structured as naïve fusion with covariance inflation in Gaussian pdf, this method was applied to the GM-CPHD with generalization. The formula for random finite set (RFS) fusion was derived in the same way as the conventional generalized covariance intersection (GCI) based fusion. The simulation results for multi-target tracking show that the proposed algorithm has smaller optimal sub-pattern assignment (OSPA) errors than naïve fusion and the GCI-based fusions.
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- 2021
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15. Anti-inflammatory effects of neutral lipids, glycolipids, phospholipids from Halocynthia aurantium tunic by suppressing the activation of NF-κB and MAPKs in LPS-stimulated RAW264.7 macrophages.
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A-Yeong Jang, Weerawan Rod-In, Chaiwat Monmai, Gyoung Su Choi, and Woo Jung Park
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Medicine ,Science - Abstract
Halocynthia aurantium is a marine organism that has been considered a promising source for bio-functional materials. Total lipids were extracted from H. aurantium tunic, and then they were separated into neutral lipids, glycolipids, and phospholipids. In the present study, fatty acid profiles of three lipids and their anti-inflammatory effects in RAW264.7 cells were investigated. Among the lipid classes, phospholipids showed the diversity of fatty acid constituents, compared with the glycolipids and neutral lipids. Three lipids contain different contents of fatty acids depending on the kinds of lipids. The most contents were saturated fatty acids (SFAs, 53-69% of the fatty acids) and monounsaturated fatty acids (MUFAs, 15-17% of fatty acids) and polyunsaturated fatty acids (PUFAs, 14-32% of fatty acids) are followed. H. aurantium lipids not only dose-dependently inhibited nitric oxide production but also reduced the expression of inflammatory cytokine genes such as TNF-α, IL-1β, and IL-6 in LPS-stimulated macrophages. It was also demonstrated that the expression of COX-2 was dose-dependently suppressed. Moreover, H. aurantium lipids decreased phosphorylation of NF-κB p-65, p38, ERK1/2, and JNK, suggesting that three lipids from H. aurantium tunic provide anti-inflammatory effects through NF-κB and MAPK signaling. These results indicate that H. aurantium is a potential source for anti-inflammation.
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- 2022
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16. Asynchronous Multi-sensor Data Fusion with Decentralized IMM-PDAF.
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Woo Jung Park, Chang Ho Kang, Sun Young Kim, and Chan Gook Park
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- 2018
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17. Serum and urine lipidomic profiles identify biomarkers diagnostic for seropositive and seronegative rheumatoid arthritis.
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Rong Li, Jung Hee Koh, Woo Jung Park, Yongsoo Choi, and Wan-Uk Kim
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RHEUMATOID arthritis ,BLOOD lipids ,SYSTEMIC lupus erythematosus ,RHEUMATOID factor ,BIOMARKERS - Abstract
Objective: Seronegative rheumatoid arthritis (RA) is defined as RA without circulating autoantibodies such as rheumatoid factor and anti-citrullinated protein antibodies; thus, early diagnosis of seronegative RA can be challenging. Here, we aimed to identify diagnostic biomarkers for seronegative RA by performing lipidomic analyses of sera and urine samples from patients with RA. Methods: We performed untargeted lipidomic analysis of sera and urine samples from 111 RA patients, 45 osteoarthritis (OA) patients, and 25 healthy controls (HC). These samples were divided into a discovery cohort (n = 97) and a validation cohort (n = 84). Serum samples from 20 patients with systemic lupus erythematosus (SLE) were also used for validation. Results: The serum lipidome profile of RA was distinguishable from that of OA and HC. We identified a panel of ten serum lipids and three urine lipids in the discovery cohort that showed the most significant differences. These were deemed potential lipid biomarker candidates for RA. The serum lipid panel was tested using a validation cohort; the results revealed an accuracy of 79%, a sensitivity of 71%, and a specificity of 86%. Both seropositive and seronegative RA patients were differentiated from patients with OA, SLE, and HC. Three urinary lipids showing differential expression between RA from HC were identified with an accuracy of 84%, but they failed to differentiate RA from OA. There were five lipid pathways that differed between seronegative and seropositive RA. Conclusion: Here, we identified a panel of ten serum lipids as potential biomarkers that can differentiate RA from OA and SLE, regardless of seropositivity. In addition, three urinary lipids had diagnostic utility for differentiating RA from HC. [ABSTRACT FROM AUTHOR]
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- 2024
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18. Efficacy and safety of moderate-intensity statin with ezetimibe combination therapy in patients after percutaneous coronary intervention: a post-hoc analysis of the RACING trial
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Jong-Il Park, Seung-Jun Lee, Bum-Kee Hong, Yun-Hyeong Cho, Won-Yong Shin, Sang-Wook Lim, Woong-Chol Kang, Yongwhi Park, Sung-Yoon Lee, Yong-Joon Lee, Sung-Jin Hong, Chul-Min Ahn, Byeong-Keuk Kim, Young-Guk Ko, Donghoon Choi, Myeong-Ki Hong, Yangsoo Jang, Jung-Sun Kim, Jung-Hee Lee, Ung Kim, Sang-Wook Yangsoo Lim Jang, Yongwhi Young Hoon Park Jung, Kyoung Jin Kim, Soon-Jun Hong, Kyeong Ho Yun, Jung Ho Heo, Seung-Woon Rha, Woong Gil Choi, Wang Soo Lee Lee, Jinok Jung, Sunghoon Choi, Youn Haeng Cho, Woo Jung Park, Changhwan Youn, Seung Ho Hur, Hyun Hee Choi, Ju Han Kim, Hyun Kuk Kim, and Yu-Jung Choi
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General Medicine ,Articles - Abstract
BACKGROUND: Moderate-intensity statin role with ezetimibe combination therapy following percutaneous coronary intervention (PCI) has not been thoroughly investigated, particularly compared to high-intensity statin monotherapy. We aimed to investigate the effect of ezetimibe combination with moderate-intensity statin in patients with atherosclerotic cardiovascular disease following PCI. METHODS: This was a post-hoc analysis of a subset of patients who underwent PCI in the RACING trial. At 26 centres in South Korea, patients with atherosclerotic cardiovascular disease (ASCVD) were randomly assigned to receive either moderate-intensity statin with ezetimibe combination therapy (rosuvastatin 10 mg with ezetimibe 10 mg) or high-intensity statin monotherapy (rosuvastatin 20 mg). The prespecified endpoints of the RACING trial were used. The primary endpoint was the 3-year composite of cardiovascular death, major cardiovascular events, and nonfatal stroke. Event rates between the two groups were compared using log-rank tests, and hazard ratios (HR) with 95% confidence intervals (CI) were estimated using Cox regression analysis. Consistent with the RACING trial, the primary and secondary efficacy endpoints were evaluated using an intention-to-treatment approach, and the safety endpoints were assessed in the safety population. The RACING trial was registered at ClinicalTrials.gov (NCT03044665). FINDINGS: Between Feb 14, 2017, and Dec 18, 2018, 3780 participants were enrolled in the RACING trial. Prior history of PCI was found in 2497 patients (67%, median 64 years, 79% male), and was associated with higher rates of the primary endpoint (hazard ratio [HR], 1.34; 95% confidence interval [CI], 1.06–1.69; p = 0.014). Among patients with prior PCI, moderate-intensity statin therapy with ezetimibe combination versus high-intensity statin therapy did not increase the risk of the primary endpoint (HR, 0.95; 95% CI, 0.74–1.24; p = 0.781). The proportion of patients with low-density lipoprotein cholesterol (LDL-C)
- Published
- 2023
19. Korean Ginseng Berry Polysaccharide Enhances Immunomodulation Activities of Peritoneal Macrophages in Mice with Cyclophosphamide-Induced Immunosuppression
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JeongUn Choi, Ju Hyun Nam, Weerawan Rod-in, Chaiwat Monmai, A-yeong Jang, SangGuan You, and Woo Jung Park
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General Medicine ,Applied Microbiology and Biotechnology ,Biotechnology - Published
- 2023
20. Neutral Lipids, Glycolipids, and Phospholipids, Isolated from Sandfish (Arctoscopus japonicus) Eggs, Exhibit Anti-Inflammatory Activity in LPS-Stimulated RAW264.7 Cells through NF-κB and MAPKs Pathways
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Weerawan Rod-in, Chaiwat Monmai, Il-sik Shin, SangGuan You, and Woo Jung Park
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Arctoscopus japonicus ,lipid ,polyunsaturated fatty acids ,anti-inflammatory ,NF-κB pathway ,MAPK ,Biology (General) ,QH301-705.5 - Abstract
Total lipids were extracted from sandfish (Arctoscopus japonicus), and then they were separated into the following three lipid fractions: neutral lipids, glycolipids, and phospholipids. In this study, we analyzed the lipid fractions of A. japonicus eggs and we determined their anti-inflammatory activity in RAW264.7 macrophage cells. In these three lipid-fractions, the main fatty acids were as follows: palmitic acid (16:0), oleic acid (18:1n-9), docosahexaenoic acid (DHA, 22:6n-3), and eicosapentaenoic acid (EPA, 20:5n-3). Among the lipid fractions, phospholipids showed the highest concentration of DHA and EPA (21.70 ± 1.92 and 18.96 ± 1.27, respectively). The three lipid fractions of A. japonicus significantly suppressed the production of NO in macrophages. Moreover, they also significantly inhibited the expression of iNOS, COX-2, IL-6, IL-1β, and TNF-α, in a dose-dependent manner. Furthermore, the lipid fractions of A. japonicus suppressed the nuclear translocation of NF-κB p65 subunits in a dose-dependent manner. In addition, they attenuated the activation of MAPKs (p38, ERK1/2, and JNK) phosphorylation in LPS-stimulated RAW264.7 cells. These results indicate that all the lipid fractions of A. japonicus exert anti-inflammatory activity by suppressing the activation of NF-κB and MAPK pathways. Therefore, the lipid fractions of A. japonicus might be potentially used as anti-inflammatory agents.
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- 2020
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21. Optimal strategy for side branch treatment in patients with left main coronary bifurcation lesions
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Myung Ho Jeong, June-Hong Kim, Jae-Hwan Lee, Hyo-Soo Kim, Jong-Seon Park, Seung-Hyuk Choi, Jihoon Kim, Dong Woon Jeon, Ki Bae Seung, Taek Kyu Park, Seung Ho Hur, Seung Hwan Lee, Joo Myung Lee, Young Bin Song, Jin-Ho Choi, Ju Hyeon Oh, Sang Yeub Lee, Seung-Woon Rha, Woo-Jung Park, Joo-Yong Hahn, Sung Yun Lee, Hyeon-Cheol Gwon, Rak Kyeong Choi, and Jeong Hoon Yang
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Target lesion ,medicine.medical_specialty ,business.industry ,Coronary Artery Disease ,General Medicine ,030204 cardiovascular system & hematology ,Coronary Angiography ,medicine.disease ,Surgery ,03 medical and health sciences ,Dissection ,Percutaneous Coronary Intervention ,Treatment Outcome ,0302 clinical medicine ,Main vessel ,Multicenter trial ,Side branch ,medicine ,Humans ,In patient ,Prospective Studies ,Myocardial infarction ,Angioplasty, Balloon, Coronary ,business ,Coronary bifurcation - Abstract
Introduction and objectives There are no guidelines regarding the most appropriate approach for provisional side branch (SB) intervention in left main (LM) bifurcation lesions. Methods The present prospective, randomized, open-label, multicenter trial compared conservative vs aggressive strategies for provisional SB intervention during LM bifurcation treatment. Although the trial was designed to enroll 700 patients, it was prematurely terminated due to slow enrollment. For 160 non-true bifurcation lesions, a 1-stent technique without kissing balloon inflation was applied in the conservative strategy, whereas a 1-stent technique with mandatory kissing balloon inflation was applied in the aggressive strategy. For 46 true bifurcation lesions, a stepwise approach was applied in the conservative strategy (after main vessel stenting, SB ballooning when residual stenosis > 75%; then, SB stenting if residual stenosis > 50% or there was a dissection). An elective 2-stent technique was applied in the aggressive strategy. The primary outcome was a 1-year target lesion failure (TLF) composite of cardiac death, myocardial infarction, or target lesion revascularization . Results Among non-true bifurcation lesions, the conservative strategy group used a smaller amount of contrast dye than the aggressive strategy group. There were no significant differences in 1-year TLF between the 2 strategies among non-true bifurcation lesions (6.5% vs 4.9%; HR, 1.31; 95%CI, 0.35-4.88; P = .687) and true bifurcation lesions (17.6% vs 21.7%; HR, 0.76; 95%CI, 0.20-2.83; P = .683). Conclusions In patients with a LM bifurcation lesion, conservative and aggressive strategies for a provisional SB approach have similar 1-year TLF rates.
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- 2021
22. Induction of IFN-β through TLR-3– and RIG-I–Mediated Signaling Pathways in Canine Respiratory Epithelial Cells Infected with H3N2 Canine Influenza Virus
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Sang-Won Lee, Young-Jo Song, Sang-Hoon Han, Seung-Yong Park, Woo-Jung Park, Dong-Hwi Kim, Joong-Bok Lee, Chang-Seon Song, and In-Soo Choi
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Myxovirus Resistance Proteins ,Small interfering RNA ,viruses ,Canine influenza ,Antiviral protein ,Respiratory Mucosa ,Biology ,Virus Replication ,Applied Microbiology and Biotechnology ,Virus ,Cell Line ,Dogs ,Animals ,RNA, Small Interfering ,RIG-I ,Influenza A Virus, H3N2 Subtype ,virus diseases ,Epithelial Cells ,Interferon-beta ,General Medicine ,Transfection ,Molecular biology ,Toll-Like Receptor 3 ,Up-Regulation ,TLR3 ,DEAD Box Protein 58 ,Interferon Regulatory Factor-3 ,Signal transduction ,Signal Transduction ,Biotechnology - Abstract
Canine influenza virus (CIV) induces acute respiratory disease in dogs. In this study, we aimed to determine the signaling pathways leading to the induction of IFN-β in a canine respiratory epithelial cell line (i.e., KU-CBE) infected with the H3N2 subtype of CIV. Small interfering RNAs (siRNAs) specific to pattern recognition receptors (PRRs) and transcription factors were used to block the IFN-β-induction signals in H3N2 CIV-infected KU-CBE cells. Among the PRRs, only the TLR3 and RIG-I expression levels significantly (P < 0.001) increased in CIV-infected cells. Following transfection with siRNA specific to TLR3 (siTLR3) or RIG-I (siRIG-I), the mRNA expression levels of IFN-β significantly (P < 0.001) decreased, and the protein expression of IFN-β also decreased in infected cells. In addition, co-transfection with both siTLR3 and siRIG-I resulted in the significant reduction of IRF3 (P < 0.001) and IFN-β (P < 0.001) mRNA levels. Moreover, the protein concentration of IFN-β was significantly (P < 0.01) lower in cells co-transfected with both siTLR3 and siRIG-I than in cells transfected with either siTLR3 or siRIG-I alone. The antiviral protein MX1was only expressed in KU-CBE cells infected with CIV or treated with IFN-β or IFN-α. Thus, we speculate that the IFN-β further induces MX1 expression that might suppress CIV replication. These data indicate that TLR3 and RIG-I synergistically induce IFN-β expression via the activation of IRF3. The IFN-β produced further induces the production of MX1, which would suppress CIV replication in CIV-infected cells.
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- 2021
23. Anti-inflammatory properties of neutral lipids, glycolipids, and phospholipids isolated from Ammodytes personatus eggs in LPS-stimulated RAW264.7 cells
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Gyoung Su Choi, Jun Hyeok Lim, Weerawan Rod-In, Seok Kyu Jung, and Woo Jung Park
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Environmental Chemistry ,General Medicine ,Aquatic Science - Abstract
In the present study, total lipids were extracted from Ammodytes personatus eggs and separated into neutral lipids, glycolipids, and phospholipids. The anti-inflammatory activity of the neutral lipids, glycolipids, and phospholipids was investigated in macrophages, as well as the fatty acid profiles of the lipids. Palmitic acid, oleic acid, docosahexaenoic acid (DHA), and eicosapentaenoic acid (EPA) were the primary fatty acids in the three fractionated lipids. Among the lipids, the phospholipids contained the highest concentration of polyunsaturated fatty acids (PUFAs), particularly DHA and EPA (31.89 and 16.93% of the total fatty acids, respectively). The anti-inflammatory effects of the three lipids isolated from A. personatus eggs were analyzed in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. The three lipids significantly reduced nitric oxide (NO) production and the mRNA expression of immune-associated genes in a dose-dependent manner. All lipids down-regulated the protein expression of phosphorylated NF-κB-p65 and MAPK (p38, JNK, and ERK1/2) signaling pathways, suggesting that they could inhibit cell signaling pathways by activating NF-κB and MAPK. The expression of CD40 and CD86 in LPS-stimulated RAW264.7 cells was also significantly decreased by A. personatus lipids. Consequently, the neutral lipids, glycolipids, and phospholipids from A. personatus eggs could serve as anti-inflammatory agents.
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- 2022
24. Novel Methods of Mitigating Lever Arm Effect in Redundant IMU
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Yong Hyeon Cho, Woo Jung Park, and Chan Gook Park
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Centrifugal force ,Inertial frame of reference ,Computer science ,010401 analytical chemistry ,Rotation around a fixed axis ,Gyroscope ,Accelerometer ,01 natural sciences ,0104 chemical sciences ,law.invention ,Computer Science::Robotics ,Acceleration ,Inertial measurement unit ,law ,Control theory ,Torque ,Measurement uncertainty ,Electrical and Electronic Engineering ,Instrumentation - Abstract
In this paper, two novel methods to mitigate lever arm effect in Redundant Inertial Measurement Units (RIMUs) are proposed with different approaches. With the presence of a lever arm for each sensing axis, the unexpected accelerations such as Euler and centrifugal accelerations are added to the measurements through rotational motion, resulting in an estimation error of linear acceleration. Therefore, it was previously considered as the best option to minimize the length of the lever arm and compensate the lever arm effect from the accelerometer measurements. However, this approach cannot completely remove the estimation error as the compensated value is based on the estimated angular rates, where the magnitude of the error becomes more apparent with a RIMU composed of low-grade gyroscopes that shows a higher noise level. In order to solve this problem, we propose two methods that can mitigate estimation error using the specific arrangement of the lever arm vectors and the concentrated likelihood method-based nonlinear least squares (NLS). By the proposed methods, the accuracy in compensating the lever arm effect can be increased by placing the lever arm vectors symmetrically or using the information from accelerometers when estimating angular rates. Besides, the suggested methods each have their own advantages in computational efficiency and overall navigation performance, compared to previous method. The effectiveness of the proposed methods is verified through simulations including misalignments of each redundant sensor.
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- 2021
25. Anti-Inflammatory Effects of Lipids Extracted from Arctoscopus japonicus Eggs on LPS-Stimulated RAW264.7 Cells
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Weerawan Rod-in, Chaiwat Monmai, Sang-min Lee, Seok-Kyu Jung, SangGuan You, and Woo Jung Park
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arctoscopus japonicus ,egg ,lipid ,anti-inflammation ,macrophage ,nf-κb ,and mapk ,Biology (General) ,QH301-705.5 - Abstract
Arctoscopus japonicus is a cold-water marine fish. The present study investigated the fatty acid composition of A. japonicus egg lipids and their anti-inflammatory effects on LPS-stimulated RAW246.7 macrophages. The results showed that A. japonicus egg lipids contained primarily polyunsaturated fatty acids (52.9% of the total fatty acid content; mostly eicosapentaenoic acid [EPA, 21.2 ± 0.5%] and docosahexaenoic acid [DHA, 25.9 ± 0.1%]), followed by monounsaturated fatty acids and saturated fatty acids (23.7% and 23.4%, respectively). A. japonicus egg lipids significantly decreased nitric oxide (NO) production and suppressed the expression of immune-associated genes such as iNOS, COX-2, IL-1β, IL-6, and TNF-α LPS-stimulated RAW246.7 macrophages in dose-dependent manner. A. japonicus egg lipids also reduced the phosphorylation levels of NF-κB p-65, p38, ERK1/2, and JNK, key components of the NF-κB and MAPK pathways, suggesting that the lipid-induced anti-inflammatory activity is related to these signaling pathways. These results indicate that the lipids extracted from A. japonicus eggs have potential biofunctions and might be useful for regulating inflammation in macrophages.
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- 2019
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26. Immune enhancement effects of Korean ginseng berry polysaccharides on RAW264.7 macrophages through MAPK and NF-κB signalling pathways
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Natchanok Talapphet, Chaiwat Monmai, A.-yeong Jang, Weerawan Rod-in, SangGuan You, and Woo Jung Park
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MAPK/ERK pathway ,Korean ginseng ,Agriculture (General) ,Immunology ,Berry ,Pharmacology ,ginseng berry ,Polysaccharide ,complex mixtures ,S1-972 ,Ginseng ,chemistry.chemical_compound ,Immune system ,Nf κb signalling ,nf-κb ,chemistry.chemical_classification ,immune enhancement activity ,food and beverages ,NF-κB ,RC581-607 ,mapk pathway ,chemistry ,polysaccharide ,Immunologic diseases. Allergy ,Agronomy and Crop Science ,Food Science - Abstract
Ginseng, a commonly used medicinal herb, contains polysaccharide as one of the bioactive compounds. This study aimed at evaluating the immune enhancement effects of Korean ginseng berry polysaccharides (GBPs) on macrophage RAW264.7 cells and their chemical characteristics. The crude polysaccharide (GBP-C) was extracted and fractionated to different polysaccharides (GBP-F1, GBP-F2, and GBP-F3). GBPs were mainly composed of rhamnose, arabinose, mannose, glucose and galactose, with molecular weights (Mw) ranging from 16 × 103 to 328 × 103 g/mol. While all the GBPs significantly increased the NO production in a dose-dependent manner, GBP-F2 showed the highest immune-enhancing effects. GBP-F2 up-regulated the mRNA expression of iNOS, IL-1β, IL-6, IL-10, and TNF-α through activating phosphorylation of NF-κB-p65, ERK1/2, JNK, and p38 to a greater extent than the other GBPs samples. These results indicate that GBPs, and especially GBP-F2, have strong immune enhancement effects desirable for application in the food and pharmaceutical industries.
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- 2021
27. Association between 10-Year Atherosclerotic Cardiovascular Disease Risk and Vascular Endothelial Function in Patients with Vasospastic Angina
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Hong-Mi Choi, Sang Won Suh, Woo Jung Park, Hyun-Sook Kim, Sang Ho Jo, Kyoung-Ha Park, and Sung-Ai Kim
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medicine.medical_specialty ,Brachial Artery ,Provocation test ,Coronary Vasospasm ,Pulse Wave Analysis ,Coronary artery disease ,Risk Factors ,Internal medicine ,Humans ,Medicine ,Ankle Brachial Index ,Pharmacology (medical) ,Endothelial dysfunction ,Pulse wave velocity ,Retrospective Studies ,Vasospastic angina ,business.industry ,Confounding ,medicine.disease ,Vasodilation ,medicine.anatomical_structure ,Cardiovascular Diseases ,Cardiology ,Endothelium, Vascular ,Cardiology and Cardiovascular Medicine ,business ,Scad ,Artery - Abstract
Background: Endothelial dysfunction is a predictor of atherosclerotic cardiovascular disease (ASCVD) and plays an important role in vasospastic angina (VA). Objectives: This study evaluated whether flow-mediated dilation (FMD) is also a good marker of 10-year ASCVD risk (10Y-ASCVDR) in patients with VA. Methods: Based on their clinical history and coronary artery diameter stenosis (DS), patients were retrospectively enrolled into VA (DS Results: Each group contained 50 patients. The 10Y-ASCVDR was significantly higher in the sCAD group than in the VA and mCAD groups (10.86 ± 7.30, 4.71 ± 4.04, and 4.77 ± 4.30, respectively, p < 0.001). The FMD was significantly higher in the mCAD group than in the VA and sCAD groups (6.37 ± 4.25, 3.10 ± 2.23, and 3.07 ± 1.89, respectively, p < 0.001). A significant correlation was found between the FMD and 10Y-ASCVD in the mCAD group (r = −0.622, p < 0.001) and the sCAD group (r = −0.557, p < 0.001) but not in the VA group (r = −0.193, p = 0.179). After adjusting for potential confounders such as BMI, C-reactive protein, maximal coronary stenosis, and brachial-ankle pulse wave velocity, multivariate analysis showed that FMD was independently associated with 10Y-ASCVDR in all patients. However, when looking only at the VA group, FMD did not correlate independently with 10Y-ASCVDR. Conclusions: Unlike mCAD and sCAD, we found no correlation between 10Y-ASCVDR and endothelial function in VA. Thus, our results support that FMD is not a good marker of atherosclerotic cardiovascular risk in VA.
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- 2021
28. Immunomodulatory Activities of Body Wall Fatty Acids Extracted from Halocynthia aurantium on RAW264.7 Cells
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A-Yeong Jang, Sang-Min Lee, Woo Jung Park, Chaiwat Monmai, SangGuan You, Ji Eun Kim, and SeokBeom Kang
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chemistry.chemical_classification ,MAPK/ERK pathway ,medicine.medical_treatment ,Fatty acid ,NF-κB ,Biological activity ,General Medicine ,Applied Microbiology and Biotechnology ,Nitric oxide ,chemistry.chemical_compound ,Immune system ,Cytokine ,Biochemistry ,chemistry ,medicine ,lipids (amino acids, peptides, and proteins) ,Biotechnology ,Polyunsaturated fatty acid - Abstract
Tunicates are known to contain biologically active materials and one species in particular, the sea peach (Halocynthia aurantium), has not been thoroughly studied. In this study we aimed to analyze the fatty acids profile of the H. aurantium body wall and its immunomodulatory effects on RAW264.7 macrophage-like cells. The fatty acids were classified into three categories: saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs), and polyunsaturated fatty acids (PUFAs). Omega-3 fatty acid content, including EPA and DHA, was higher than omega-6 fatty acids. H. aurantium body wall fatty acids exhibited enhanced immune response and anti-inflammatory effects on RAW264.7 macrophage-like cells. Under normal conditions, fatty acids significantly increase nitric oxide (NO) and PGE2 production in a dose-dependent manner, thereby improving the immune response. On the other hand, in LPS-treated RAW264.7 cells, fatty acids significantly decreased nitric oxide (NO) and PGE2 production in a dose-dependent manner, thereby enhancing anti-inflammatory effects. Fatty acids transcriptionally control the expression of the immune-associated genes, iNOS, IL-1β, IL-6, COX-2, and TNF-α, via the MAPK and NF-κB signaling cascades in RAW264.7 cells. However, in LPSstimulated RAW264.7 cells, H. aurantium body wall fatty acids significantly inhibited expression of inflammatory cytokine; similarly, production of COX-2 and PGE2 was inhibited. The results of our present study provide insight into the immune-improving and anti-inflammatory effects of H. aurantium body wall fatty acids on macrophages. In addition, our study demonstrates that H. aurantium body wall is a potential source of immune regulatory components.
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- 2020
29. Theoretical Analysis on the Degree of Observability of Attitude and Accelerometer Bias Under Static and In-Flight Alignment
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Chan Gook Park, Yong Hyeon Cho, Jong-Hwa Song, Woo Jung Park, and Chang-Sik Bae
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Control and Systems Engineering ,Control theory ,Applied Mathematics ,Observability ,Accelerometer ,Software ,Mathematics ,Degree (temperature) - Published
- 2020
30. Clustering by Major Selection Motivations and Group Differences in Dropout Intention, Major Satisfaction, College Adjustment, and Academic Achievement among University Students
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Baole Choi and Woo Jung Park
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Psychiatry and Mental health ,Group differences ,Academic achievement ,Cluster analysis ,Psychology ,Selection (genetic algorithm) ,Dropout (neural networks) ,Developmental psychology - Published
- 2020
31. Analysis and Compensation of Time Synchronization Error on SAR Image
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Chan Gook Park, Jong-Hwa Song, Soojeong Lee, Woo Jung Park, and Chang-Sik Bae
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Computer science ,business.industry ,Computer vision ,Artificial intelligence ,business ,Image (mathematics) ,Time synchronization ,Compensation (engineering) - Published
- 2020
32. Co-immunomodulatory Activities of Anionic Macromolecules Extracted from Codium fragile with Red Ginseng Extract on Peritoneal Macrophage of Immune-Suppressed Mice
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Sang-Min Lee, Seok-Kyu Jung, A-Yeong Jang, SangGuan You, Chaiwat Monmai, Weerawan Rod-in, Ji Eun Kim, and Woo Jung Park
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0106 biological sciences ,Codium fragile ,Cyclophosphamide ,biology ,food and beverages ,General Medicine ,Pharmacology ,biology.organism_classification ,complex mixtures ,01 natural sciences ,Applied Microbiology and Biotechnology ,Nitric oxide ,chemistry.chemical_compound ,Ginseng ,Immune system ,chemistry ,Oral administration ,Immunity ,010608 biotechnology ,medicine ,Macrophage ,Biotechnology ,medicine.drug - Abstract
In this study we investigated the immune effects of oral administration of anionic macromolecules extracted from Codium fragile (CFAM) and red ginseng extract mixture on the peritoneal macrophage cells in immune-suppressed mice. Cyclophosphamide (CY) induces the immune-suppressed condition. CY-treated mice were orally fed with different concentrations of CFAM supplemented with red ginseng extract and the peritoneal macrophages collected. CY treatment significantly decreased the immune activities of peritoneal macrophages, compared to the normal mice. The administration of CFAM mixed with red ginseng extract significantly boosted the viability of macrophage cells and nitric oxide production of peritoneal macrophages. Further, the oral administration of CFAM mixed with red ginseng extract up-regulated the expression of iNOS, COX-2, and TLR-4 as well as cytokines such as IL-1β, IL-6, TNF-α, and IFN-γ more than the red ginseng-treated group. This study showed that CFAM enhanced the immune activity of red ginseng extract in the peritoneal macrophage cells of immune-suppressed mice. Furthermore, CFAM might be used as a co-stimulant of red ginseng extract through the regulation of macrophage cells for the enhancement of human health and immunity.
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- 2020
33. Road Constrained Labeled Multi Bernoulli Filter based on PDF Truncation for Multi-Target Tracking
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Woo Jung Park and Chan Gook Park
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0209 industrial biotechnology ,Truncation ,business.industry ,Computer science ,020208 electrical & electronic engineering ,Probability density function ,Tracking system ,02 engineering and technology ,Filter (signal processing) ,Tracking (particle physics) ,Bernoulli's principle ,020901 industrial engineering & automation ,Control and Systems Engineering ,Bounded function ,0202 electrical engineering, electronic engineering, information engineering ,Trajectory ,business ,Algorithm - Abstract
In this paper, road constrained filtering is applied to labeled multi Bernoulli (LMB) filter using PDF truncation in multi-road environment. In target tracking systems with road map information, road constraints can effectively improve the estimation performance. To apply multiple road constraints information to the tracking filter, all constraints should not be applied simultaneously and only one should be selected for each estimated trajectory. Then, probability density function (PDF) truncation is conducted which is a constrained filtering technique for inequality constraints. To verify the constrained filtering technique to LMB filter, simulations for multi-target tracking in cluttered environments are carried out. The simulation result shows that the proposed method bounded estimated trajectories on the road effectively and reduced OSPA error.
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- 2020
34. Development of fermented rice cake containing strawberry showing anti-inflammatory effect on LPS-stimulated macrophages and paw edema induced mice
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Chaiwat Monmai, JeongUn Choi, Weerawan Rod-in, Tae Ho Lee, and Woo Jung Park
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Lipopolysaccharides ,Mice, Inbred ICR ,Multidisciplinary ,Interleukin-6 ,Tumor Necrosis Factor-alpha ,Macrophages ,Anti-Inflammatory Agents ,Oryza ,Carrageenan ,Fragaria ,Dinoprostone ,Mice ,Cyclooxygenase 2 ,Animals ,Edema ,Fermented Foods ,Powders - Abstract
Strawberry (Fragaria ananassa) is one of the richest sources containing a wide variety of nutritive compounds. Anti-inflammatory activities of fermented rice cake made of strawberry powder as well as rice powder were evaluated. The fermented rice cake containing strawberry powder (SRC) significantly and dose-dependently inhibited NO production in LPS-stimulated RAW264.7 cells without cytotoxicity. Also, SRC effectively suppressed inflammatory gene expression, including iNOS, COX-2, IL-1β, IL-6, and TNF-α. In addition, the production of PGE2, IL-1β, IL-6, and TNF-α was significantly reduced. Furthermore, the anti-inflammatory effect of SRC was investigated using carrageenan-induced paw edema of ICR mice. It was demonstrated that pre-orally administration of SRC at a dose of 50 and 100 mg/kg BW significantly inhibited paw edema induced by carrageenan. This study suggested that the anti-inflammation activities of strawberry rice cake give the potential for increasing the commercialization of rice cake and rice products.
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- 2022
35. Design of Generalized Inverse Covariance Intersection with Multiple Estimates
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Woo Jung Park and Chan Gook Park
- Published
- 2022
36. Immune-Enhancement and Anti-Inflammatory Activities of Fatty Acids Extracted from Halocynthia aurantium Tunic in RAW264.7 Cells
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Chaiwat Monmai, Seok Hyeon Go, II-Shik Shin, Sang Guan You, Hyungjae Lee, Seok Beom Kang, and Woo Jung Park
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Halocynthia aurantium ,tunic ,fatty acids ,immunomodulation ,NF-κB pathway ,MAPK ,Biology (General) ,QH301-705.5 - Abstract
Halocynthia aurantium, an edible ascidian species, has not been studied scientifically, even though tunicates and ascidians are well-known to contain several unique and biologically active materials. The current study investigated the fatty acid profiles of the H. aurantium tunic and its immune-regulatory effects on RAW264.7 macrophage cells. Results of the fatty acid profile analysis showed a difference in ratios, depending on the fatty acids being analysed, including those of saturated fatty acids (SFA), monounsaturated fatty acids (MUFA), and polyunsaturated fatty acids (PUFA). In particular, omega-3 fatty acids, such as eicosatrienoic acid n-3 (ETA n-3), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), were much higher than omega-6 fatty acids. Moreover, the H. aurantium tunic fatty acids, significantly and dose-dependently, increased the NO and prostaglandin E2 (PGE2) production in RAW264.7 cells, for immune-enhancement without cytotoxicity. In addition, these fatty acids regulated the transcription of immune-associated genes, including iNOS, IL-1β, IL-6, COX-2, and TNF-α. These actions were activated and deactivated via Mitogen-activated protein kinase (MAPK)and NF-κB signaling, to regulate the immune responses. Conversely, the H. aurantium tunic fatty acids effectively suppressed the inflammatory cytokine expressions, including iNOS, IL-1β, IL-6, COX-2, and TNF-α, in LPS-stimulated RAW264.7 cells. Productions of COX-2 and PGE2, which are key biomarkers for inflammation, were also significantly reduced. These results elucidated the immune-enhancement and anti-inflammatory mechanisms of the H. aurantium tunic fatty acids in macrophage cells. Moreover, the H. aurantium tunic might be a potential fatty acid source for immune-modulation.
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- 2018
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37. Immune-Enhancing Effects of Crude Polysaccharides from Korean Ginseng Berries on Spleens of Mice with Cyclophosphamide-Induced Immunosuppression
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Ju Hyun Nam, JeongUn Choi, Chaiwat Monmai, Weerawan Rod-in, A-yeong Jang, SangGuan You, and Woo Jung Park
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Immunosuppression Therapy ,Mice ,Mice, Inbred BALB C ,Polysaccharides ,Fruit ,Animals ,Panax ,General Medicine ,Applied Microbiology and Biotechnology ,Cyclophosphamide ,Spleen ,Biotechnology - Published
- 2021
38. Anti-inflammatory potential of Lactobacillus reuteri LM1071 via eicosanoid regulation in LPS-stimulated RAW264.7 cells
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Woo Jung Park, A-Yeong Jang, Chaiwat Monmai, Minn Sohn, Tae-Rahk Kim, Weerawan Rod-in, and Min-Gyu Jeon
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Limosilactobacillus reuteri ,Lipopolysaccharides ,medicine.drug_class ,Metabolite ,Left-Right Determination Factors ,Anti-Inflammatory Agents ,Inflammation ,Biology ,Applied Microbiology and Biotechnology ,Anti-inflammatory ,Dinoprostone ,Microbiology ,chemistry.chemical_compound ,Mice ,Gene expression ,medicine ,Protein biosynthesis ,Animals ,Humans ,Alprostadil ,Gene ,food and beverages ,General Medicine ,biology.organism_classification ,Lactobacillus reuteri ,RAW 264.7 Cells ,Eicosanoid ,chemistry ,Cyclooxygenase 2 ,lipids (amino acids, peptides, and proteins) ,medicine.symptom ,Biotechnology - Abstract
Aims To investigate anti-inflammatory effects of Lactobacillus reuteri LM1071 in lipopolysaccharides (LPS)-induced inflammation RAW264.7 cells. Methods and Results To evaluate anti-inflammatory activities of L. reuteri LM1071, LPS-stimulated RAW264.7 cells were used. Gene expression levels of eight immune-associated genes including IL-1β, IL-6 and TNF-α and protein production levels of COX-1 and COX-2 were analysed. Moreover, the production of eicosanoids as important biomarkers for anti-inflammation was determined. Conclusions The current study demonstrates that L. reuteri LM1071 has anti-inflammatory potential by inhibiting the production of inflammation mediators such as NO, eicosanoids such as PGE1 & PGE2, pro-inflammatory cytokines and COX proteins. It can also enhance the production of inflammatory associated genes such as IL-11, BMP4, LEFTY2 and EET metabolite. Significance and Impact of the Study Lactobacillus reuteri is one of the crucial bacteria for food fermentation. It can be found in the gastrointestinal system of human and animals. Several studies have shown that L. reuteri has valuable effects on host health. The current study firstly demonstrated that L. reuteri has a beneficial effect on the inflammation containing the variation of eicosanoids (PGE1 and PGE2) which are one of the most important biomarkers and moreover eicosanoid-associated genes as well as proteins (COX-2).
- Published
- 2021
39. Immunomodulatory Activities of Ammodytes personatus Egg Lipid in RAW264.7 Cells
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Gyoung Su Choi, Weerawan Rod-in, Chaiwat Monmai, Jun Hyeok Lim, Woo Jung Park, and A-Yeong Jang
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MAPK/ERK pathway ,Phagocytosis ,Pharmaceutical Science ,Ammodytes personatus ,Analytical Chemistry ,Flow cytometry ,lipids ,QD241-441 ,Immune system ,nitric oxide ,Drug Discovery ,Gene expression ,eggs ,medicine ,Physical and Theoretical Chemistry ,immunomodulatory ,CD86 ,chemistry.chemical_classification ,NF-κB and MAPK pathway ,medicine.diagnostic_test ,flow cytometry ,Organic Chemistry ,Biochemistry ,chemistry ,Chemistry (miscellaneous) ,gene expression ,Molecular Medicine ,Phosphorylation ,lipids (amino acids, peptides, and proteins) ,Polyunsaturated fatty acid - Abstract
Ammodytes personatus, known as the Pacific sand lance, thrives in cold areas of the North Pacific. In this study, the total lipid was extracted from A. personatus eggs and the fatty acid composition was determined using gas chromatography (GC)–flame ionization detection (FID). The results showed that the extracted lipid contained high content of polyunsaturated fatty acids (PUFAs). The immunomodulatory activities of the A. personatus lipid were investigated using rodent macrophages. First, immune enhancement was analyzed, and the A. personatus lipid significantly and dose-dependently increased the NO production in RAW264.7 cells, and this lipid also regulated the transcription of immune-associated genes in RAW264.7 cells by activating the NF-κB and MAPK pathways. Additionally, flow cytometry revealed that this lipid stimulated phagocytosis. Conversely, the anti-inflammatory activity of the A. personatus lipid was also analyzed and the results showed significantly decreased NO production and gene expression in a dose-dependent manner in LPS-stimulated RAW264.7 cells. In addition, the A. personatus lipid suppressed the LPS-induced phosphorylation of proteins related to the NF-κB and MAPK pathways in LPS-stimulated RAW264.7 cells. Further, flow cytometry demonstrated the lipid-regulated anti-inflammatory activity via inhibition of CD86 expression. The results indicate that A. personatus egg lipid is a potential source of immunomodulation.
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- 2021
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40. Heterologous ChAdOx1 and Bnt162b2 vaccination induces strong neutralizing antibody responses against SARS-CoV-2 including delta variant with tolerable reactogenicity
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Seongman Bae, Jae-Hoon Ko, Ju-Yeon Choi, Woo-Jung Park, So Yun Lim, Jin Young Ahn, Kyoung-Ho Song, Kyoung Hwa Lee, Young Goo Song, Yong Chan Kim, Yoon Soo Park, Won Suk Choi, Hye Won Jeong, Shin-Woo Kim, Ki Tae Kwon, Eun-Suk Kang, Ah-Ra Kim, Sundong Jang, Byoungguk Kim, Sung Soon Kim, Hee-Chang Jang, Jun Yong Choi, Sung-Han Kim, and Kyong Ran Peck
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Microbiology (medical) ,Infectious Diseases ,SARS-CoV-2 ,Spike Glycoprotein, Coronavirus ,Vaccination ,COVID-19 ,Humans ,General Medicine ,Antibodies, Viral ,Antibodies, Neutralizing ,BNT162 Vaccine - Abstract
We assessed humoral responses and reactogenicity following the heterologous vaccination compared to the homologous vaccination groups.We enrolled healthcare workers (HCWs) who were either vaccinated with ChAdOx1 followed by BNT162b2 (heterologous group) or 2 doses of ChAdOx1 (ChAdOx1 group) or BNT162b2 (BNT162b2 group). Immunogenicity was assessed by measuring antibody titers against receptor-binding domain (RBD) of SARS-CoV-2 spike protein in all participants and neutralizing antibody titer in 100 participants per group. Reactogenicity was evaluated by a questionnaire-based survey.We enrolled 499 HCWs (ChAdOx1, n = 199; BNT162b2, n = 200; heterologous ChAdOx1/BNT162b2, n = 100). The geometric mean titer of anti-receptor-binding domain antibody at 14 days after the booster dose was significantly higher in the heterologous group (11 780.55 binding antibody unit (BAU)/mL [95% CI, 10 891.52-12 742.14]) than in the ChAdOx1 (1561.51 [95% CI, 1415.03-1723.15]) or BNT162b2 (2895.90 [95% CI, 2664.01-3147.98]) groups (both p 0.001). The neutralizing antibody titer of the heterologous group (geometric mean NDHeterologous ChAdOx1 followed by BNT162b2 vaccination with a 12-week interval induced a robust humoral immune response against SARS-CoV-2, including the Delta variant, that was comparable to the homologous BNT162b2 vaccination and stronger than the homologous ChAdOx1 vaccination, with a tolerable reactogenicity profile.
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- 2022
41. Immune-modulation effect of
- Author
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A-Yeong, Jang, Chaiwat, Monmai, Weerawan, Rod-In, Ji-Eun, Kim, SangGuan, You, Tae Ho, Lee, and Woo Jung, Park
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Research Article - Abstract
The current study evaluated the immune-regulatory potential of lipid extract from Halocynthia aurantium tunic on macrophage cells. The results showed that H. aurantium lipid is composed of primarily SFA (68.32%), followed by MUFA and PUFA (17.61% and 14.07%, respectively). Halocynthia aurantium lipid dose-dependently modulated the NO and PGE(2) production in RAW264.7 cells without any LPS stimulation. The lipid effectively up-regulated the cytokine expression, including IL-1β, IL-6, and TNF-α in RAW264.7 cells. The COX-2 expression as a key biomarker for inflammation was also significantly increased. Conversely, H. aurantium lipid down-regulated the expression of inflammatory cytokines in LPS-stimulated RAW264.7 cells. Halocynthia aurantium lipid modulated the phosphorylation of NF-κB p-65, p38, ERK, and JNK, indicating that this lipid activated through NF-κB and MAPK pathways. These results provide insight into the immune-regulatory activities of H. aurantium tunic lipid and suggest that H. aurantium tunic may a potential lipid source for immune-regulatory molecules.
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- 2021
42. Effect of Occurrence of Scion Root on the Growth and Root Nutrient Contents of ‘Shiranuhi’ Mandarin Hybrid grown in Plastic Film House
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Woo-Jung Park, Seok-Beom Kang, Seong-Gap Han, Jae-Ho Joa, Young-Eel Moon, Hae-Jin Lee, and Gyeong-Rok Yankg
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Horticulture ,Nutrient ,Plastic film ,language ,General Medicine ,Biology ,Rootstock ,Mandarin Chinese ,language.human_language - Published
- 2019
43. Immune Enhancement Effects of Codium fragile Anionic Macromolecules Combined with Red Ginseng Extract in Immune-Suppressed Mice
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Weerawan Rod-in, Ji Eun Kim, SangGuan You, A-Yeong Jang, Woo Jung Park, Sang-Min Lee, and Chaiwat Monmai
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0106 biological sciences ,Codium fragile ,Antioxidant ,biology ,Chemistry ,medicine.medical_treatment ,food and beverages ,Spleen ,General Medicine ,Pharmacology ,biology.organism_classification ,complex mixtures ,01 natural sciences ,Applied Microbiology and Biotechnology ,Edible seaweed ,Ginseng ,Immune system ,medicine.anatomical_structure ,Immunity ,010608 biotechnology ,Gene expression ,medicine ,Biotechnology - Abstract
Codium fragile is an edible seaweed in Asian countries that has been used as a thrombolytic, anticoagulant, antioxidant, anti-inflammatory, and immune-stimulatory agent. Ginseng has also been known to maintain immune homeostasis and to regulate the immune system via enhancing resistance to diseases and microorganisms. In this study, anionic macromolecules extracted from C. fragile (CFAM) were orally administered with red ginseng extract (100 mg/kg body weight) to cyclophosphamide-induced immunosuppressed male BALB/c mice to investigate the immune-enhancing cooperative effect of Codium fragile and red ginseng. Our results showed that supplementing CFAM with red ginseng extract significantly increased spleen index, T- and B-cell proliferation, NK cell activity, and splenic lymphocyte immune-associated gene expression compared to those with red ginseng alone, even though a high concentration of CFAM with red ginseng decreased immune biomarkers. These results suggest that CFAM can be used as a co-stimulant to enhance health and immunity in immunosuppressed conditions.
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- 2019
44. Motion Sensing Algorithm for SAR Image Using Pre-Parametric Error Modeling
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Woo Jung Park, Chang Sik Bae, Jong-Hwa Song, Yong-gonjong Park, Soojeong Lee, and Chan Gook Park
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Computer science ,business.industry ,Motion sensing ,Computer vision ,Artificial intelligence ,business ,Parametric statistics ,Image (mathematics) - Published
- 2019
45. Scion root pruning affects leaf C/N ratio and physiological performance of ‘Shiranuhi’ mandarin trees grown in a greenhouse
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Woo Jung Park, Kwan Jeong Song, Jinwook Lee, Seok-Beom Kang, and Young Eel Moon
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0106 biological sciences ,0301 basic medicine ,Fresh weight ,Greenhouse ,Horticulture ,Biology ,biology.organism_classification ,01 natural sciences ,Mandarin Chinese ,Physiological responses ,language.human_language ,Citrus unshiu ,03 medical and health sciences ,030104 developmental biology ,Soluble solids ,language ,Rootstock ,Pruning ,010606 plant biology & botany - Abstract
Intensive scion rooting in ‘Shiranuhi’ mandarin [(Citrus unshiu × C. sinensis) × C. reticulata] trees contributed to reduced flowering, yield, and fruit quality at commercial mandarin orchards. To elucidate the effect of a cultural technique on controlling the loss of fruit quality and yield, mandarin trees were grouped into three treatments as follows: no scion root (without scion roots), scion root intact, and scion root pruning in thirteen-year-old ‘Shiranuhi’ mandarin trees. Scion root pruning reduced leaf nitrogen (N) and enhanced leaf carbon (C), thereby increasing the leaf C/N ratio in scion root pruned trees, than those with intact scion roots. Physiological responses of flowering and fruiting were significantly enhanced by pruning scion roots in mandarin trees. Fruit size, fruit fresh weight, and soluble solids content (SSC) were considerably greater in scion root pruned trees than those with intact scion roots. Furthermore, pruning scion roots increased total fruit yield than that in mandarin trees with intact scion roots. Overall, the results indicated that scion root pruning should contribute to minimizing cultural problems, such as low yield and poor fruit quality, which have been caused by scion rooting in ‘Shiranuhi’ mandarin orchards.
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- 2019
46. The Effect of Inertial Measurement Unit on Synthetic Aperture Radar Image Quality
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Chan Gook Park, Chang-Sik Bae, Soojeong Lee, Yong-gonjong Park, Woo Jung Park, and Jong-Hwa Song
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Quality (physics) ,Inertial measurement unit ,Computer science ,Synthetic aperture radar image ,General Medicine ,Remote sensing - Published
- 2019
47. MEMS 3D DR/GPS Integrated System for Land Vehicle Application Robust to GPS Outages
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Woo Jung Park, Jong Yun Yeo, Chang Ho Kang, Myung Hwan Seo, Jae Hong Lee, Jin Woo Song, Chan Gook Park, and Sang Yeon Park
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General Computer Science ,business.industry ,Computer science ,020208 electrical & electronic engineering ,010401 analytical chemistry ,Real-time computing ,General Engineering ,MEMS DR/GPS integrated system ,Navigation system ,3D dead reckoning ,02 engineering and technology ,01 natural sciences ,Odometer ,0104 chemical sciences ,Noise ,Acceleration ,Extended Kalman filter ,Position (vector) ,0202 electrical engineering, electronic engineering, information engineering ,Global Positioning System ,General Materials Science ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,business ,noise covariance adaptation ,lcsh:TK1-9971 - Abstract
In this paper, we propose a MEMS 3D DR/GPS integrated system which provides 3D attitude and position information for land vehicle application. Since low-cost MEMS-IMU provides data with large bias, it is hard to obtain an accurate position of the land vehicle, especially during GPS outages. To improve the performance of the MEMS-based navigation system, odometer-based 3D DR/GPS formulation is proposed. The proposed algorithm uses 1D speed information for obtaining 3D position and extended Kalman filter (EKF) to compensate for navigation errors. An error model for the EKF is developed, including the odometer scale factor, which may change over various environments and require an accurate value. By substituting a MEMS INS/GPS system to 3D DR/GPS system, the velocity and position errors of navigation solution are reduced. Since the proposed system estimates 3D attitude and position unlike conventional DR/GPS system, it suppresses navigation errors effectively when a land vehicle goes uphill and downhill even for the GPS outages. Besides, the adaptation rule for measurement noise covariance is applied to improve navigation performance. The proposed method is tested for a land vehicle in an urban area, including GPS outages. The experimental results show that the proposed MEMS 3D DR/GPS system provides a more stable navigation solution with fewer position errors.
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- 2019
48. Vascular Alterations Preceding Arterial Wall Thickening in Overweight and Obese Children
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Sung-Ai Kim, Kyung Hee Park, Sarah Woo, Yoon Myung Kim, Hyun Jung Lim, and Woo-Jung Park
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obesity ,childhood ,vascular ,stiffness ,General Medicine - Abstract
Background: Childhood obesity is linked to adverse cardiovascular outcomes in adulthood. This study aimed to assess the impact of childhood obesity on the vasculature and to investigate whether vascular alteration precedes arterial wall thickening in childhood. Methods: A total of 295 overweight (body mass index [BMI] 85th to 95th percentile, n = 30) and obese (BMI ≥ 95th percentile, n = 234) children aged 7–17 years and 31 normal-weight controls with similar age and gender were prospectively recruited. We assessed anthropometric data and laboratory findings, and measured the carotid intima–media thickness (IMT), carotid artery (CA) diameter, M-mode-derived arterial stiffness indices, and velocity vector imaging parameters, including the CA area, fractional area change, circumferential strain, and circumferential strain rate (SR). Results: The mean ± standard deviation age of the participants was 10.8 ± 2.1 years; 172 (58%) children were male. Regarding structural properties, there was no difference in the IMT between the three groups. The CA diameter was significantly increased in obese children, whereas the CA area showed a significant increase beginning in the overweight stage. Regarding functional properties, contrary to β stiffness and Young’s elastic modulus, which were not different between the three groups, the circumferential SR showed a significant decrease beginning in the overweight stage and was independently associated with BMI z-scores after adjusting for covariates. Conclusion: We have demonstrated that arterial stiffening and arterial enlargement precede arterial wall thickening, and that these vascular alterations begin at the overweight stage in middle childhood or early adolescence.
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- 2022
49. The Effects of Atorvastatin on Global Cerebral Ischemia-Induced Neuronal Death
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Woo-Jung Park, Dae Ki Hong, Beom Seok Kang, Sang Won Suh, Kyung Chan Choi, Kyoung-Ha Park, and A Ra Kho
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0301 basic medicine ,Male ,medicine.medical_treatment ,Atorvastatin ,Pharmacology ,medicine.disease_cause ,Brain Ischemia ,Rats, Sprague-Dawley ,0302 clinical medicine ,Biology (General) ,Saline ,Spectroscopy ,Neurons ,biology ,Behavior, Animal ,General Medicine ,neuronal death ,Computer Science Applications ,Chemistry ,Neuroprotective Agents ,medicine.symptom ,medicine.drug ,global cerebral ischemia ,Statin ,QH301-705.5 ,medicine.drug_class ,Ischemia ,Inflammation ,Neuroprotection ,Catalysis ,Article ,Inorganic Chemistry ,03 medical and health sciences ,medicine ,Animals ,vasa vasorum ,Physical and Theoretical Chemistry ,QD1-999 ,Molecular Biology ,business.industry ,Organic Chemistry ,endothelial cell damage ,medicine.disease ,Rats ,Oxidative Stress ,030104 developmental biology ,biology.protein ,NeuN ,Hydroxymethylglutaryl-CoA Reductase Inhibitors ,business ,Cognition Disorders ,030217 neurology & neurosurgery ,Oxidative stress - Abstract
(1) Background and Purpose: Global cerebral ischemia-induced severe hypoxic brain damage is one of the main causes of mortality and long-term neurologic disability even after receiving early blood reperfusion. This study aimed to test the hypothesis that atorvastatin potentially has neuroprotective effects in global cerebral ischemia (GCI). (2) Methods: We performed two sets of experiments, analyzing acute (1-week) and chronic (4-week) treatments. For the vehicle (Veh) and statin treatments, 1 mL of 0.9% saline and 5 mg/kg of atorvastatin (ATOR) were administered orally. For histological analysis, we used the following staining protocols: Fluoro-Jade B and NeuN, 4-hydroxynonenal, CD11b and GFAP, IgG, SMI71, and vWF. Finally, we evaluated the cognitive function with a battery of behavioral tests. (3) Results: The GCI-ATOR group showed significantly reduced neuronal death, oxidative stress, inflammation, and BBB disruption compared with the GCI-Veh group. Moreover, the GCI-ATOR group showed decreased endothelial damage and VV proliferation and had significantly improved cognitive function compared with the GCI-Veh group in both models. (4) Conclusions: ATOR has neuroprotective effects and helps recover the cognitive function after GCI in rats. Therefore, administration of atorvastatin may be a therapeutic option in managing GCI after CA.
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- 2021
50. Anti-inflammatory activities of the mixture of strawberry and rice powder as materials of fermented rice cake on RAW264.7 macrophage cells and mouse models
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Tae Ho Lee, Jun Hyeok Lim, Weerawan Rod-in, Woo Jung Park, Ju Hyun Nam, and Chaiwat Monmai
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medicine.drug_class ,Chemistry ,food and beverages ,Anti inflammation ,Health benefits ,Applied Microbiology and Biotechnology ,Anti-inflammatory ,Carrageenan ,chemistry.chemical_compound ,medicine ,Fermentation ,Potential source ,Food science ,Powder mixture ,Food Science ,Biotechnology ,Paw edema ,Research Article - Abstract
Rice cake is a traditional food in Korea, and is made by rice alone, or with other grain powder. To improve the health benefits of fermented rice cake, the rice powder was supplemented with strawberry powder. Anti-inflammatory activities of the mixture of strawberry and rice powder were evaluated. Treatment with the mixture significantly decreased the production of nitric oxide (NO). The mixture of strawberry and rice powder in the ratio 10: 90 effectively and dose-dependently reduced the immune-associated genes iNOS, IL-1β, IL-6, COX-2, and TNF-α. Furthermore, carrageenan-injected mice were used to study the anti-inflammatory effect of the mixture. Pre-oral administration of the mixture of strawberry and rice powder at doses of 50 and 100 mg/kg BW significantly reduced paw edema induced by carrageenan. These results suggest that for fermented rice cake production and processing, the strawberry and rice powder mixture may be a potential source of anti-inflammatory activity.
- Published
- 2021
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