272 results match your criteria: "Chonnam University[Affiliation]"

Background: Dual antiplatelet therapy with aspirin and clopidogrel is the standard treatment for acute ischemic stroke (AIS). Cilostazol has emerged as a safe alternative with pleiotropic effects that prevent stroke without increasing the risk of bleeding and has been shown to reduce neurological deterioration (ND) in the acute phase. Ginkgo biloba extract (EGb 761) has also been reported to improve neurological impairment following AIS.

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Frequency and characteristics of seizures precipitated by febrile urinary tract infections in neonates and infants.

Pediatr Neonatol

October 2024

Department of Pediatrics, Chonnam National University Medical School, Gwangju, South Korea; Department of Pediatrics, Chonnam University Children's Hospital, Gwangju, South Korea. Electronic address:

Background: A febrile urinary tract infection (UTI) is a minor febrile seizure (FS) determinant. Seizures precipitated by febrile UTIs in neonates and infants frequently surprise parents, as they are vulnerable to bacterial meningitis and younger than the usual ages of FS. However, their frequency and characteristics are relatively unknown.

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Article Synopsis
  • The study assessed the safety and effectiveness of ustekinumab (UST) in treating Korean patients with Crohn's disease over a four-year period, gathering data from 464 patients across 44 hospitals.
  • Results showed that clinical response rates were high at first (75% by week 20) but decreased by week 66 (62.4%), with higher success rates in patients who had not previously used biologics.
  • Adverse events occurred in 28.2% of patients, but no new safety concerns were identified, suggesting UST is generally safe and beneficial for this demographic.
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The role of Pim-1 kinases in inflammatory signaling pathways.

Inflamm Res

October 2024

Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601, Republic of Korea.

Objective And Design: This observational study investigated the regulatory mechanism of Pim-1 in inflammatory signaling pathways.

Materials: THP-1, RAW 264.7, BV2, and Jurkat human T cell lines were used.

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Background: Papillary thyroid microcarcinoma (PTMC) is characterized by its favorable prognosis and potential for active surveillance (AS) as a management option. However, the presence of cervical lymph node (LN) metastasis, especially lateral LN metastasis, significantly impacts management and prognosis. Previous studies have focused on post-surgery risk factors for cervical LN metastasis.

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Background: Adolescence is a critical period for individual growth and development. Insufficient sleep adversely affects adolescents' physical development, blood pressure, vision, and cognitive function. This study examined the effect of short-form video addiction on adolescents' sleep quality, as well as the mediating role of social anxiety, to identify methods for improving adolescents' sleep quality in the Internet era.

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Background: Benign convulsions with mild gastroenteritis (CwG) are prevalent in young children during the winter. Early in the coronavirus disease 2019 (COVID-19) pandemic, viral gastroenteritis occurrence decreased and seasonal variation was lost, which can change CwG.

Purpose: Here we investigated changes in frequency, seasonal variation, and causative viruses of CwG during the COVID-19 pandemic.

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Background: Optic neuritis (ON) prognosis is influenced by various factors including attack severity, underlying aetiologies, treatments and consequences of previous episodes. This study, conducted on a large cohort of first ON episodes, aimed to identify unique prognostic factors for each ON subtype, while excluding any potential influence from pre-existing sequelae.

Methods: Patients experiencing their first ON episodes, with complete aquaporin-4 (AQP4) and myelin oligodendrocyte glycoprotein (MOG) antibody testing, and clinical data for applying multiple sclerosis (MS) diagnostic criteria, were enrolled.

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Article Synopsis
  • The study investigates the effectiveness of existing pharmacokinetic models (Marsh and Schnider) for administering propofol during anesthesia, specifically for the newer MCT/LCT formulation as opposed to the older LCT formulation.
  • Adult patients undergoing surgery were given MCT/LCT propofol, and their plasma levels were measured to assess how accurately the models predicted drug concentration during anesthesia.
  • Findings show that both models performed well in predicting propofol levels, with only minor differences noted between the formulations, indicating that the existing models remain relevant for TCI of the new propofol formulation.
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Background: More than half of acne patients have truncal acne on their chest, back, and shoulders. However, since most studies on acne have focused on the face, data on clinical characteristics and proper management for truncal acne are insufficient.

Objective: To establish a Korean Acne Rosacea Society (KARS) consensus for experts' perception and treatment patterns of truncal acne.

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Heart failure is a leading cause of death and is often accompanied by activation of quiescent cardiac myofibroblasts, which results in cardiac fibrosis. In this study, we aimed to identify novel circular RNAs that regulate cardiac fibrosis. We applied transverse aortic constriction (TAC) for 1, 4, and 8 weeks in mice.

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Characterization of highly pathogenic avian influenza A (H5N1) viruses isolated from cats in South Korea, 2023.

Emerg Microbes Infect

December 2024

Department of Virology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea.

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The impact of metformin on the rat facial nerve following crush injury has only occasionally been documented to date. The purpose of the current investigation was to use functional and electrophysiological evaluations to investigate the effects of metformin administration on recovery following crush injury to the rat facial nerve. The rats were randomly divided into four groups: the nonDM/PBS group (n = 4), the nonDM/metformin group (n = 4), the DM/PBS group (n = 4), and the DM/metformin group (n = 4).

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Basic Study on Measurement of Return Loss and Smith Chart Change Using Microstrip Patch Antenna with Concentration Transition for Non-invasive Blood Glucose Measurement.

J Electr Eng Technol

November 2022

Department of Electrical and Electronic Engineering, Dankook Univerity, 152 Jukjeon-ro, Suji-gu, Yongin-si, Gyeonggi-do Korea.

This paper describes a basic study on the measurement of return loss and change in Smith chart using a microstrip patch antenna (MPA) with concentration transition to perform non-invasive blood glucose measurements. To evaluate blood glucose level changes in the human body, the concentration of measurements was changed 10 times to an equivalent of 100 mg/dL in a range of 0-1000 mg/dL to reflect a concentration of 400 mg/dL, which is the fatal level of diabetes. Five types of MPAs were fabricated that formed resonant frequencies in the 1, 2, 3, 4, and 5 GHz bands, and were used in the experiment.

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Article Synopsis
  • - The study aimed to compare the image quality of coronary CT angiography using lower tube voltages (80 to 100 kVp) and low-concentration contrast agents to traditional methods with higher voltages (120 kVp) and high-concentration contrast agents, ensuring that the lower methods were not inferior in quality.
  • - A total of 318 patients participated in the trial, with CT scans performed using different contrast agents and protocols, allowing researchers to evaluate key metrics including image quality, signal-to-noise ratio, and radiation dose across three groups of contrast media (270 mgI/mL, 320 mgI/mL, and 370 mgI/mL).
  • - The results showed that while the low-concentration groups
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Taxonomic reassessment of chaetognaths (Chaetognatha, Sagittoidea, Aphragmophora) from Korean waters.

Zookeys

June 2022

Big data Fishery Resource Management Interdisciplinary Program, Chonnam University, Yeosu 59626, Republic of Korea.

Since the first record of chaetognaths (arrow worms) reported from Korean waters by Molchanov in 1907, three families, 12 genera and 21 species have been additionally described. Eighteen of the 21 recorded species have been reported under scientific names different from the latest taxonomic system. This study aimed to address this issue by conducting a taxonomic re-evaluation of chaetognaths collected from Korean waters.

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While conventional approaches for PTEN-loss cancers mainly focus on turning off growth promoting process through modulation of PI3K/AKT pathways, no effective therapeutic treatments that target PTEN-loss cancer cells have yielded results. Moreover, conventional targeted therapies, which are potent against only a subset of cancer cells with limited specificity, bring on temporary response. Here, we report the development of albumin-binding caspase-3 cleavable peptide-drug conjugate (PDC), which utilizes the enhanced albumin metabolism pathway in PTEN-loss cancer cells to enhance the intracellular delivery of chemotherapeutic payload that could exert a bystander killing effect.

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Background: We aimed to compare trough infliximab levels and the development of antidrug antibody (ADA) for 1 year between Crohn's disease (CD) and ulcerative colitis (UC) patients who were biologic-naive, and to evaluate their impact on clinical outcomes.

Methods: This was a prospective, multicenter, observational study. Biologic-naive patients with moderate to severe CD or UC who started CT-P13, an infliximab biosimilar, therapy were enrolled.

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Caspase-3 mediated switch therapy of self-triggered and long-acting prodrugs for metastatic TNBC.

J Control Release

June 2022

Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea. Electronic address:

Triple-negative breast cancer (TNBC) is characterized by its highly heterogeneous microenvironment and propensity for aggressive behavior, both of which represent, along with poor prognosis and high incidence of relapse, the main challenges of curing the disease. Although recent progress in targeted chemotherapy combinations has shown promising outcomes, conventional targeted chemotherapeutic approaches have relied on exploiting the expression of certain molecules or proteins overexpressed on cancer cells as drug targets, which have demonstrated limited clinical benefit against metastatic cancers. Here, we describe a tumoral caspase-3 mediated peptide-doxorubicin conjugates (PDC) switch therapy that adopts two different caspase-3 cleavable PDCs, RGDEVD-DOX (TPD1) and EMC-KGDEVD-DOX (MPD1), for targeting metastatic triple-negative breast cancer (mTNBC).

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Impeding the Medical Protective Clothing Contamination by a Spray Coating of Trifunctional Polymers.

ACS Omega

March 2022

KAIST Institute for the BioCentury, Department of Biological Sciences, Center for Precision Bio-Nanomedicine, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Daejeon 34141, Republic of Korea.

The risk of fomite-mediated transmission in the clinic is substantially increasing amid the recent COVID-19 pandemic as personal protective equipment (PPE) of hospital workers is easily contaminated by direct contact with infected patients. In this context, it is crucial to devise a means to reduce such transmission. Herein, we report an antimicrobial, antiviral, and antibiofouling trifunctional polymer that can be easily coated onto the surface of medical protective clothing to effectively prevent pathogen contamination on the PPE.

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Purpose: Left ventricular function can be affected by chronic ventricular pacing. Different right ventricular (RV) pacing sites have shown heterogeneous clinical outcomes. We investigated these factors in patients receiving permanent pacemaker (PPM) implants.

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Vascular calcification (VC), or calcium deposition inside the blood vessels, is common in patients with atherosclerosis, cardiovascular disease, and chronic kidney disease. Although several treatments are available to reduce calcification, the incidence of VC continues to rise. Recently, there have been several reports describing the regulation of circular RNAs (circRNAs) in various diseases.

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There is ongoing debate regarding the optimal antiplatelet strategy beyond 12 months in patients with acute myocardial infarction (AMI) who undergo successful percutaneous coronary intervention (PCI). This study therefore aimed to investigate the clinical outcomes of single (SAPT) vs. dual antiplatelet therapy (DAPT) beyond 12 months in patients with stable AMI and second-generation drug-eluting stent (DES) implantation.

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Radish sprout alleviates DSS-induced colitis via regulation of NF-kB signaling pathway and modifying gut microbiota.

Biomed Pharmacother

December 2021

Department of Biotechnology, College of Life Science and Biotechnology, Korea University, Seoul 02841, Republic of Korea. Electronic address:

In this study, we investigated the effects of radish sprout ethanol extract (RSE) on inflammatory responses in the macrophages and a mouse model of colitis. RSE administration was found to effectively inhibit the phosphorylation of IκB and, in turn, the production of pro-inflammatory enzymes and cytokines in lipopolysaccharide-stimulated macrophages. In dextran sulfate sodium (DSS)-colitis mice, RSE administration prevented body weight and colon length reduction, while decreasing inflammation and mucosal necrosis.

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