457 results match your criteria: "Cheju National University[Affiliation]"
Sensors (Basel)
January 2023
Agency for Defense Development, Changwon 51682, Republic of Korea.
In this study, two thin rectangular PVDFs were installed in the form of a cantilever on a FTEH (funnel-type energy harvester), and a CTEH (cymbal-type energy harvester) was fabricated in a form coupled to the upper part of the support. As a result of measuring the energy harvesting sensitivity according to the installation direction of the CTEH, a high voltage was measured in the structure installed on top of the support across all flow velocity conditions. A composite structure PVDF energy harvester combining CTEH and FTEH was fabricated and the amount of power generated was measured.
View Article and Find Full Text PDFDiagnostics (Basel)
July 2021
Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea.
Previous efforts to discover new surrogate markers for the central nervous system (CNS) inflammatory demyelinating disorders have shown inconsistent results; moreover, supporting evidence is scarce. The present study investigated the IgG autoantibody responses to various viral and autoantibodies-related peptides proposed to be related to CNS inflammatory demyelinating disorders using the peptide microarray method. We customized a peptide microarray containing more than 2440 immobilized peptides representing human and viral autoantigens.
View Article and Find Full Text PDFMult Scler
November 2020
Department of Neurology, Korea University College of Medicine, Seoul, South Korea.
Background: Neuromyelitis optica spectrum disorder (NMOSD) targets astrocytes and elevates the levels of astrocyte-injury markers during attacks. FAM19A5, involved in reactive gliosis, is secreted by reactive astrocytes following central nervous system (CNS) damage.
Objective: To investigate the significance of serum FAM19A5 in patients with NMOSD.
J Alzheimers Dis
November 2019
Department of Neurology, College of Medicine, Gachon University Gil Hospital, Incheon, Korea.
Background: Magnetic resonance imaging (MRI) is a useful tool to predict the diagnosis and progression of Alzheimer's disease (AD), especially for primary physicians. However, the correlation between baseline MRI findings and AD progression has not been fully established.
Objective: To investigate the correlation between hippocampal atrophy (HA) and white matter hyperintensities (WMH) on initial brain MRI images and the degree of cognitive decline and functional changes over 1 year.
BMC Anesthesiol
July 2018
Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University, School of Medicine, 81, Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea.
Background: Interleukin 2 (IL-2) influences the development and severity of pain due to its antinociceptive and immunomodulatory effects. Its production is influenced by the increased expression of c-Cbl (Casitas B-lineage lymphoma proto-oncogene) and Cbl-b E3 ubiquitin ligases. We evaluated the effects on IL-2-mediated changes in c-Cbl and Cbl-b expression in a rat model of chronic neuropathic pain.
View Article and Find Full Text PDFMicrob Pathog
September 2017
Division of Food Technology, Biotechnology and Agrochemistry, Institute of Environmentally-Friendly Agriculture, Chonnam National University, Gwangju 61186, South Korea. Electronic address:
In this study, we isolated Bacillus licheniformis MH48 from rhizosphere soil and demonstrated that this strain shows significant antifungal activity against Rhizoctonia solani, Colletotrichum gloeosporioides, and Phytophthora capsici. Our results showed that a 50% concentration of bacterial cell-free culture filtrate of B. licheniformis MH48 shows strong activity against fungal pathogens.
View Article and Find Full Text PDFEXCLI J
July 2016
School of Marine Biomedical Sciences, Jeju National University, Jeju 63243, Republic of Korea.
The present study was designed to investigate the anti-cancer effects of Sea hare eggs (SE) in U937 cells and its major active components. The aqueous extract of SE (ASE), which contained the highest protein content, dose-dependently inhibited the cancer cell's growth (IC50 value, 10.42 ± 0.
View Article and Find Full Text PDFNeuroscience
December 2015
Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, Seoul 130-701, Republic of Korea; Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 130-701, Republic of Korea; Kyung Hee East-West Pharmaceutical Research Institute, College of Pharmacy, Kyung Hee University, Seoul 130-701, Republic of Korea. Electronic address:
Although several studies have suggested the neuroprotective effect of thymosin β4 (TB4), a major actin-sequestering protein, on the central nervous system, little is understood regarding the action of N-acetyl-serylaspartyl-lysyl-proline (Ac-SDKP), a peptide fragment of TB4 on brain function. Here, we examined neurogenesis-stimulative effect of Ac-SDKP. Intrahippocampal infusion of Ac-SDKP facilitated the generation of new neurons in the hippocampus.
View Article and Find Full Text PDFJ Nutr
June 2015
Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
Background: Few prospective studies have examined the preventive role of fruit and vegetable intakes against cancer in Asian populations.
Objective: This prospective study evaluated the associations between total fruit intake, total vegetable intake, and total fruit and vegetable intake and total cancer incidence and mortality.
Methods: This prospective cohort study included 14,198 men 40-59 y of age enrolled in the Seoul Male Cohort Study from 1991 to 1993.
Ultrasound Med Biol
May 2015
Department of Biomedical Sciences, Inha University College of Medicine, Incheon, Republic of Korea. Electronic address:
Oxidative stress in retinal pigment epithelium (RPE) is one of the key causative factors of RPE injury in age-related macular degeneration (AMD). Low-intensity ultrasound (LIUS) less than 1 W/cm(2) in intensity has been found to have cytoprotective and anti-inflammatory effects in many cell types and diseases. In this study, we investigated for the first time the feasibility of using LIUS to protect RPE cells from oxidative damage.
View Article and Find Full Text PDFJ Prev Med Public Health
November 2013
Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea. ; Korean Foundation for Cancer Research, Seoul, Korea.
Objectives: This study estimated the association of cardiovascular health behaviors with the risk of all-cause and cardiovascular disease (CVD) mortality in middle-aged men in Korea.
Methods: In total, 12 538 men aged 40 to 59 years were enrolled in 1993 and followed up through 2011. Cardiovascular health metrics defined the following lifestyle behaviors proposed by the American Heart Association: smoking, physical activity, body mass index, diet habit score, total cholesterol, blood pressure, and fasting blood glucose.
J Pediatr Urol
June 2014
Department of Urology, University of Ulsan College of Medicine, Ulsan University Hospital, 290-3 Jeonha-dong Dong-gu, 682-714 Ulsan, South Korea. Electronic address:
Objective: To investigate the effectiveness of laparoscopic varicocelectomy (LV) in adolescents with varicocele and analyze the impact of internal spermatic artery (ISA) preservation on surgical outcomes.
Materials And Methods: Data on 92 adolescents with left varicocele who underwent LV between December 1998 and January 2011 were retrospectively analyzed. The mean age of the patients was 13.
Nat Prod Commun
August 2011
Department Department of Chemistry, Cheju National University, Ara-l-dong, Jeju 690-756, Korea.
This study examined the chemical composition of Neolitsea aciculata essential oil (NAE) and its biological activities. NAE was obtained by hydro-distillation of N. aciculata leaves collected in Jeju Island and analyzed by gas chromatography equipped with a mass spectrometer detector.
View Article and Find Full Text PDFJ Enzyme Inhib Med Chem
June 2012
Department of Chemistry and Research Center for Cosmetic Science, Cheju National University, Jeju, Korea.
Phytochemical investigation of the branches of Ficus erecta var. sieboldii King resulted in the isolation of eight constituents: p-hydroxybenzoic acid (1), methyl p-hydroxybenzoate (2), vanillic acid (3), methyl vanillate (4), syringic acid (5), β-sitosterol (6), α-amyrin acetate (7), and ethyl linoleate (8). Their chemical structures were identified via spectroscopic means as well as by comparing their data with literature values.
View Article and Find Full Text PDFClin Psychopharmacol Neurosci
April 2011
Department of Psychiatry, Cheju National University Hospital, Jeju, Korea.
Tardive dyskinesia is characterized by choreiform movements, or rhythmic abnormal involuntary movements of the face, mouth, tongue, trunk, and limbs. It is frequently associated with the use of neuroleptic medications. The choreiform movements are irreversible in some patients, even after the drug is withdrawn.
View Article and Find Full Text PDFPlant Sci
April 2011
Subtropical Horticulture Research Institute, Cheju National University, Jeju 690-756, Republic of Korea.
Freezing temperatures control where and when plants can grow, and negatively influence crop quality and productivity. To identify key regulatory genes involved in cold adaptation, we screened activation-tagged Arabidopsis lines for mutants with greater freezing tolerance. One mutant, freezing tolerant line1 (ftl1-1D), manifested enhanced tolerance along with dwarfism and delayed flowering.
View Article and Find Full Text PDFJ Cell Biochem
March 2011
Department of Biochemistry, School of Medicine, Cheju National University, Jeju 690-756, Korea.
Transmembrane 4 L six family member 5 (TM4SF5) is highly expressed in hepatocarcinoma and causes epithelial-mesenchymal transition (EMT) of hepatocytes. We found that TM4SF5-expressing cells showed lower mRNA levels but maintained normal protein levels in certain gene cases, indicating that TM4SF5 mediates stabilization of proteins. In this study, we explored whether regulation of proteasome activity and TM4SF5 expression led to EMT.
View Article and Find Full Text PDFJ Fish Dis
November 2010
Biochemistry Lab, Department of Medicine, School of Medicine, Cheju National University, Jeju, Korea.
A novel sialic acid-specific lectin (MCsialec) was detected from an expressed sequenced tag (EST) sequence from Manila clam haemocytes infected with Perkinsus olseni. The cDNA of the lectin was cloned using gene-specific primers based on a previously determined EST and characterized. The full-length cDNA of MCsialec is 603 bp in length and encodes a polypeptide of 200 amino acids with a calculated molecular mass of 21.
View Article and Find Full Text PDFClin Orthop Surg
June 2010
Department of Orthopaedic Surgery, Cheju National University College of Medicine, Jeju, Korea.
Background: This study was performed to estimate the incidence of hip fractures of people older than 50 years in South Korea.
Methods: Information of patients over 50 years of age who had sustained a hip fracture were obtained from the records of eight hospitals in Jeju Island between 2002 and 2006 to calculate the incidence of hip fractures in this age group.
Results: There were 820 hip fractures during the study period.
J Anim Sci
August 2010
Department of Veterinary Medicine, Graduate School, Cheju National University, Cheju, Korea, 153-801.
In this study, the intent was to identify genetic polymorphisms of mitochondrial (mt) DNA in Korean cattle (Bos taurus coreana) and to analyze the genetic relationship between Korean cattle and other breeds. Whole mtDNA genomes (16,338 bp) of 26 animals (16 Korean cattle and 10 Holsteins) were directly sequenced. Multiple alignments, including 26 whole-mtDNA sequences obtained by direct sequencing and 10 mtDNA sequences from a public database (National Center for Biotechnology Information), revealed 393 mtDNA polymorphisms (382 SNP, 3 heteroplasmies, and 8 insertion-deletion polymorphisms).
View Article and Find Full Text PDFClin Orthop Surg
March 2010
Department of Orthopedic Surgery, Cheju National University Hospital, Jeju, Korea.
Hansenula anomala (H. anomaly) is part of the normal flora in the alimentary tract and throat. It has been reported to be an organism causing opportunistic infections in immunocompromised patients.
View Article and Find Full Text PDFNeurol Sci
April 2010
Department of Neurology, College of Medicine, Cheju National University, Jeju, South Korea.
Thrombocytopenia is a major adverse effect of several drug treatments. Rifampicin has been recognized as a cause of immune thrombocytopenia. A 68-year-old woman diagnosed with pulmonary tuberculosis was taking the standard four-drug antituberculosis regimen for 4 months.
View Article and Find Full Text PDFOncol Rep
December 2009
Department of Biochemistry, Cheju National University, Jeju, Korea.
The expression of matrix metalloproteinase-9 (MMP-9) has been reported in various cancers. Its expression is associated with tumorigenesis and tumor metastasis. Studies have shown that galectin-7, a beta-galactoside-binding animal lectin, is involved in various processes including the suppression of tumor growth.
View Article and Find Full Text PDFCarbohydr Res
December 2009
School of Applied Marine Science, College of Ocean Science, Cheju National University, Jeju 690-756, Republic of Korea.
Macoma birmanica agglutinin (MBA) that seems to play crucial roles in the innate immunity of marine bivalve, M. birmanica has been earlier defined as GlcNAc/Man specific. However, most complementary carbohydrate structures to its binding domain and ligand clustering in its recognition profile have not been established.
View Article and Find Full Text PDFActa Histochem
January 2011
Applied Radiological Science Research Institute, Cheju National University, Jeju, South Korea.
An acidic polysaccharide of Panax ginseng (APG), ginsan, has been reported to protect the hematopoietic system by increasing the number of bone marrow cells and spleen cells. Therefore, we evaluated the ability of APG to protect mice from radiation-induced damage of the small intestine. APG treatment caused the lengthening of villi and a numerical increase of crypt cells in the small intestine at 3.
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