505 results match your criteria: "Sun moon University[Affiliation]"

Imbalances in gut microbiota and subsequent destabilization of intestinal barrier equilibrium have been related to the evolution of metabolic disorders. Goji berries (Lycium barbarum; GB) and their fermented counterpart (FGB) have been identified for their prebiotic capacity in managing intestinal barrier functions and inflammatory profiles Consequently, this research was designed to investigate the effects of supplementing GB and FGB on intestinal integrity, inflammation, and changes in the composition of gut microbiota in high-fat (HF)-fed rats. Thirty-two male Sprague-Dawley rats (6 weeks old, 8 per group) were divided into four categories based on their weight and provided with either respective diets over a 6-week period: low-fat (LF; 10% of calories from fat), HF (45% of calories from fat), and HF diets supplemented with either GB or FGB at a 2% (w/w).

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The crystal structure and phase stability of a host lattice plays an important role in efficient upconversion phenomena. In stable hosts, lanthanides doping should not generally change the crystal structure of the host itself. But when phase of a system drastically changes after lanthanide doping resulting in multiple phases, accurate identification of upconverting phase remains a challenge.

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Factors influencing peripheral intravenous catheter practice of nurses in small and medium sized hospitals: a cross-sectional study.

BMC Nurs

May 2024

Department of Nursing Science, Sun Moon University, 70 Sunmoonro 221beongil, Tangjeongmyeon, Asansi, Chungnam, 31460, South Korea.

Article Synopsis
  • * It surveyed 149 nurses to assess how their knowledge, working environment, and perceptions of patient safety culture influence their PIVC practices, finding that clinical experience and knowledge significantly impact the effectiveness of these practices.
  • * To improve PIVC practices, the study suggests implementing education and training programs along with initiatives to enhance the patient safety culture in these hospitals.
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Unlabelled: To investigate the molecular characteristics and antibiotic resistance of isolates from patients with diarrhea in Korea, 327 strains were collected between 2007 and 2022. The presence of staphylococcal enterotoxin (SE) and toxic shock syndrome toxin-1 (TSST-1) genes in isolates was determined by PCR. The highest expression of the TSST-1 gene was found in the GIMNO type (43.

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We selectively improved the viewing angle characteristics and light extraction efficiency of blue thermally activated delayed fluorescence (TADF) organic light-emitting diodes (OLEDs) by tailoring a nanofiber-shaped SiN layer, which was used as an internal scattering layer. The diameter of the polymer nanofibers changed according to the mass ratio of polyacrylonitrile (PAN) and poly(methyl methacrylate) (PMMA) in the polymer solution for electrospinning. The SiN nanofiber (SNF) structure was fabricated by etching an SiN film using the PAN/PMMA nanofiber as a mask, making it easier to adjust parameters, such as the diameter, open ratio, and height, even though the SNF structure was randomly shaped.

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Metabolic Comparison and Molecular Networking of Antimicrobials in Species.

Int J Mol Sci

April 2024

Institute of Biomolecule Reconstruction (iBR), Department of Life Science and Biochemical Engineering, Sun Moon University, Asan 31460, Republic of Korea.

Article Synopsis
  • Researchers have isolated four soil bacterial species from Nepal that produce important antimicrobial compounds, addressing multidrug-resistant (MDR) microorganism challenges.
  • The antimicrobial efficacy of these isolates was evaluated against various pathogenic strains, with species PC1 showing the most significant inhibition.
  • LC-MS/MS analysis identified 37 metabolites, predominantly diketopiperazines, including four novel compounds; additional known metabolites were characterized using GNPS molecular networking.
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Causal dynamics of sleep, circadian rhythm, and mood symptoms in patients with major depression and bipolar disorder: insights from longitudinal wearable device data.

EBioMedicine

May 2024

Department of Mathematical Sciences, KAIST, Daejeon, 34141, Republic of Korea; Biomedical Mathematics Group, Pioneer Research Center for Mathematical and Computational Sciences, Institute for Basic Science, Daejeon, 34126, Republic of Korea. Electronic address:

Background: Sleep and circadian rhythm disruptions are common in patients with mood disorders. The intricate relationship between these disruptions and mood has been investigated, but their causal dynamics remain unknown.

Methods: We analysed data from 139 patients (76 female, mean age = 23.

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Biosynthesis of Apigenin Glucosides in Engineered .

J Microbiol Biotechnol

May 2024

Department of Life Science and Biochemical Engineering, Sun Moon University, Asan-si 31460, Republic of Korea.

Glucosylation is a well-known approach to improve the solubility, pharmacological, and biological properties of flavonoids, making flavonoid glucosides a target for large-scale biosynthesis. However, the low yield of products coupled with the requirement of expensive UDP-sugars limits the application of enzymatic systems for large-scale. is a Gram-positive and generally regarded as safe (GRAS) bacteria frequently employed for the large-scale production of amino acids and bio-fuels.

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Enzymatic extraction of anthocyanins from the pomace of aronia (Aronia melanocarpa).

Biosci Biotechnol Biochem

May 2024

Department of Food Science and Technology, Chung-Ang University, Anseong, Gyeonggi-do, Republic of Korea.

Efficient extraction of natural pigments is a key focus in enhancing the utilization of by-products for applications in the food industry. In this study, an enzymatic extraction method using Pectinex Ultra SP-L, Pectinex XXL, Novoshape, and Celluclast was used to investigate natural pigment production from the pomace of aronia, a commercially important plant. The method's performance was monitored using high-performance liquid chromatography with diode-array detection by measuring total and individual anthocyanin levels.

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Hollow Microcavity Electrode for Enhancing Light Extraction.

Micromachines (Basel)

February 2024

Display and Nanosensor Laboratory, Department of Electrical Engineering, Korea University, Seoul 02841, Republic of Korea.

Luminous efficiency is a pivotal factor for assessing the performance of optoelectronic devices, wherein light loss caused by diverse factors is harvested and converted into the radiative mode. In this study, we demonstrate a nanoscale vacuum photonic crystal layer (nVPCL) for light extraction enhancement. A corrugated semi-transparent electrode incorporating a periodic hollow-structure array was designed through a simulation that utilizes finite-difference time-domain computational analysis.

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Inhibition of PRMT1 Suppresses the Growth of U87MG-Derived Glioblastoma Stem Cells by Blocking the STAT3 Signaling Pathway.

Int J Mol Sci

March 2024

Department of Life Science and Biochemical Engineering, Graduate School, Sun Moon University, Asan 31460, Republic of Korea.

Article Synopsis
  • Glioblastoma stem cells (GSCs) are crucial in glioblastoma multiforme (GBM) development and resistance to treatment, making them key targets for new therapies.
  • A study demonstrated that the PRMT1 inhibitor furamidine can hinder GSC growth by inducing cell cycle arrest and apoptosis, and it showed effectiveness in reducing tumor growth in vivo.
  • Combining furamidine with another compound, berbamine, enhances its anti-GSC effects by further downregulating STAT3 and important GSC markers, suggesting a promising therapeutic strategy for GBM treatment.*
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This research delves into advancing an ultra-wideband (UWB) localization system through the integration of filtering technologies (moving average (MVG), Kalman filter (KF), extended Kalman filter (EKF)) with a low-pass filter (LPF). We investigated new approaches to enhance the precision and reduce noise of the current filtering methods-MVG, KF, and EKF. Using a TurtleBot robotic platform with a camera, our research thoroughly examines the UWB system in various trajectory situations (square, circular, and free paths with 2 m, 2.

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Article Synopsis
  • Cytochrome P450 monooxygenases, like CYP199A35 found in KCCM40447, are essential for producing hydroxylated compounds that aid microorganisms in survival.
  • The genome analysis of KCCM40447 unveiled a circular genome of about 9.1 million base pairs and identified 8601 protein-encoding genes, including CYP199A35, which is linked to a specific transporter gene (PcaK).
  • Experimental validation and bioinformatics showed that KCCM40447 has a complete pathway to metabolize 4-methoxybenzoate, demonstrating the effectiveness of its enzymatic processes.
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A new peucemycin derivative and impacts of peuR and bldA on peucemycin biosynthesis in Streptomyces peucetius.

Appl Microbiol Biotechnol

December 2024

Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sun Moon-Ro 221, Tangjeong-Myeon, Asan-Si, 31460, Chungnam, Korea.

Streptomyces peucetius ATCC 27952 is known to produce a variety of secondary metabolites, including two important antitumor anthracyclines: daunorubicin and doxorubicin. Identification of peucemycin and 25-hydroxy peucemycin (peucemycin A), as well as their biosynthetic pathway, has expanded its biosynthetic potential. In this study, we isolated a new peucemycin derivative and identified it as 19-hydroxy peucemycin (peucemycin B).

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Suppresses the Growth of Huh7-Derived Liver Cancer Stem Cells by Inducing Necroptosis and Apoptosis and Blocking c-MET Signaling.

Cells

December 2023

Department of Life Science and Biochemical Engineering, Graduate School, Sun Moon University, Asan 31460, Republic of Korea.

Liver cancer stem cells (LCSCs) contribute to the initiation, metastasis, treatment resistance, and recurrence of hepatocellular carcinoma (HCC). Therefore, exploring potential anticancer agents targeting LCSCs may offer new therapeutic options to overcome HCC treatment failure. Thunberg (HDT), a tree from the buckthorn family found in Asia, exhibits various biological activities, including antifatigue, antidiabetic, neuroprotective, hepatoprotective, and antitumor activities.

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Functional ankle instability (FAI), which is characterized by recurrent ankle sprains and perceived joint instability, arises from various factors contributing to compromised biomechanical control during activities, particularly those involving landing tasks. While current research predominantly addresses lower-extremity and core stabilization interventions for FAI, the contribution of upper body control to landing biomechanics in this population remains insufficiently explored. In this study, 42 participants (19 males, 23 females) with FAI were randomly assigned to either the upper-body control training group (UBCTG) or the core muscle stabilization training group (CMSTG).

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The Impact of Neck Cooling on Serum Oxidant/Antioxidant Status and HSP70 Levels during High-Intensity Cycling.

Life (Basel)

November 2023

Exercise Physiology Laboratory, Department of Physical Education, Yonsei University, Seoul 03722, Republic of Korea.

Numerous studies have been conducted in an attempt to discover cooling strategies that can be effective in improving exercise performance. However, the mechanism by which neck cooling relieves exercise-induced physiological stress and the optimal cooling temperature are unclear. This study aimed to investigate the effects of neck cooling at different temperatures during high-intensity cycling on body temperature, physiological variables, oxidant/antioxidant status, heat shock protein (HSP) 70 levels, and exercise performance in adolescent athletes.

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How Do Two Types of Exercise Habits Predict Physical Activity with Intention?

Behav Sci (Basel)

November 2023

Department of Sport Science, Sungkyunkwan University, Suwon 16419, Republic of Korea.

This manuscript investigates how conscious intention and unconscious exercise habits influence physical activity behavior. While prior research has predominantly focused on conscious decision-making, this study applied a dual-process model to explore the impact of intention and habit on physical activity engagement. Out of the 300 questionnaires distributed to students from one university, 282 questionnaires were utilized for data analysis after excluding insincere responses.

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The rapid growth of uncharacterized enzymes and their functional diversity urge accurate and trustworthy computational functional annotation tools. However, current state-of-the-art models lack trustworthiness on the prediction of the multilabel classification problem with thousands of classes. Here, we demonstrate that a novel evidential deep learning model (named ECPICK) makes trustworthy predictions of enzyme commission (EC) numbers with data-driven domain-relevant evidence, which results in significantly enhanced predictive power and the capability to discover potential new motif sites.

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Oral health of older Koreans by region and family status in 2020-2021.

Gerodontology

December 2024

Department of Dental Hygiene, College of Health Science, Sun Moon University, Chungcheong, Korea.

Article Synopsis
  • The study examines the oral health of older Koreans, focusing on how factors like region and family status affect their oral health, specifically chewing discomfort.
  • Data was collected from over 3,000 participants aged 65 and older in the National Health and Nutrition Survey conducted by Korea's CDC, analyzing how living arrangements and location impact oral health.
  • Results indicate that older adults living alone, particularly in rural areas, experience significantly more chewing discomfort, highlighting the need for targeted strategies to address oral health disparities in an ageing population.
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Functional characterization of a naphthalene-O-methyltransferase from Nocardia sp. CS682.

Enzyme Microb Technol

January 2024

Institute of Biomolecule Reconstruction (iBR), Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sun Moon-ro 221, Tangjeong-myeon, Asan-si, Chungnam 31460, South Korea; Department of Pharmaceutical Engineering and Biotechnology, Sun Moon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam 31460, South Korea. Electronic address:

Methylation plays important roles in biosynthesis, metabolism, signal transduction, detoxification, protein sorting and repair, and nucleic acid processing. Generally the methyltransferases transfer methyl groups in various natural products using S-adenosyl methionine (SAM) as a cofactor. In this study, we examined and functionally characterized ThnM3 (enzyme), by testing various substrates with different chemical structures.

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Ensemble Approach to Combining Episode Prediction Models Using Sequential Circadian Rhythm Sensor Data from Mental Health Patients.

Sensors (Basel)

October 2023

Division of Computer Science and Engineering, College of Software and Convergence, Sun Moon University, Asan 31460, Republic of Korea.

Managing mood disorders poses challenges in counseling and drug treatment, owing to limitations. Counseling is the most effective during hospital visits, and the side effects of drugs can be burdensome. Patient empowerment is crucial for understanding and managing these triggers.

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Effective Properties for the Design of Basalt Particulate-Polymer Composites.

Polymers (Basel)

October 2023

Division of Smart Automotive Engineering, Sun Moon University, Asan-si 31460, Republic of Korea.

In this study, preliminary simulations were performed to manufacture thermoplastic composites that can be processed by injection. For analysis, a basalt particulate-polymer composite model was manufactured and its elastic modulus, shear modulus, thermal expansion coefficient, and thermal conductivity were predicted using finite-element analysis (FEA) and micromechanics. Polypropylene (PP), polyamide 6, polyamide 66, and polyamide (PA) were employed as the polymer matrix, with the variations in their properties investigated based on the volume fraction of basalt.

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In this study, a surface hardening of AISI 52100 bearing steel was performed by ultrasonic nanocrystal surface modification (UNSM), and electrolytic-plasma thermo-cyclic surface modification (EPSM), and their effects on the wear resistance were investigated. To evaluate the impact of these treatments on the wear resistance, the friction tests under dry conditions were conducted using a ball-on-disk tribometer in accordance with ASTM G99. The microstructure of the samples before and after treatment was characterized by scanning electron microscopy.

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