2,412 results match your criteria: "College of Natural Science[Affiliation]"

Negative regulation of HDAC3 transcription by histone acetyltransferase TIP60 in colon cancer.

Genes Genomics

July 2024

Department of Life Science, College of Natural Science, Chung-Ang University, Seoul, 06974, Republic of Korea.

Background: Colon cancer is the third most common cancer globally. The expression of histone deacetylase 3 (HDAC3) is upregulated, whereas the expression of tat interactive protein, 60 kDa (TIP60) is downregulated in colon cancer. However, the relationship between HDAC3 and TIP60 in colon cancer has not been clearly elucidated.

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Assistive technology on upper extremity function for stroke patients: A systematic review with meta-analysis.

J Hand Ther

December 2024

Department of Occupational Therapy, College of Natural Science and Public Health and Safety, Chosun University, Gwangju, Republic of Korea. Electronic address:

Background: In stroke rehabilitation, the selection of appropriate assistive devices is of paramount importance for patients. Specifically, the choice of device can significantly influence the functional recovery of the upper limb, impacting their overall activities or functional tasks.

Objectives: This review aimed to comprehensively analyze and summarize the clinical evidence from randomized controlled trials (RCTs) regarding the therapeutic effects of commonly used assistive devices on upper extremity function in patients with stroke.

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Background: Alcohol-related liver disease (ALD) is a major health concern worldwide, but effective therapeutics for ALD are still lacking. Tumor necrosis factor-inducible gene 6 protein (TSG-6), a cytokine released from mesenchymal stem cells, was shown to reduce liver fibrosis and promote successful liver repair in mice with chronically damaged livers. However, the effect of TSG-6 and the mechanism underlying its activity in ALD remain poorly understood.

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Sphingomonas Immobilis sp. nov., and Sphingomonas natans sp. nov. bacteria isolated from soil.

Arch Microbiol

May 2024

Department of Bio & Environmental Technology, College of Natural Science, Seoul Women's University, Seoul, 01797, Republic of Korea.

Two novel strains of bacteria, CA1-15 and BIUV-7, were isolated from soil samples gathered in Cheonan-si, Republic of Korea, and Inje-gun, Republic of Korea, respectively. These bacteria are Gram-negative, aerobic, and non-motile. Phylogenetic evaluations, using the sequence of the 16S rRNA gene, showed that strains CA1-15 and BIUV-7 belong to a distinctive clade within the family Sphingomonadaceae (order Sphingomonadales, class Alphaproteobacteria).

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Article Synopsis
  • Perivascular adipose tissue (PVAT) dysfunction disrupts vascular health, and factors like inflammation and BMP4 signaling play crucial roles in this condition, especially when induced by a high-fat diet (HFD).
  • A study on Sprague-Dawley rats showed that a 6-week aerobic exercise intervention reversed the negative effects of HFD, improving PVAT function and reducing inflammation.
  • Exercise training not only restored the structural properties of PVAT but also enhanced its conversion from white-like to brown-like fat characteristics, promoting healthier signaling pathways related to fat metabolism and energy expenditure.
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Characteristics of Using Oriental Medicine Clinics during the Japanese Occupation: An Analysis of the 1931 Seoul Bochun Clinic Account Book.

Uisahak

April 2024

Director, Korean Research Institute of Science, Technology and Civilization (KRISTC), Jeonbuk National University & Professor, Department of Science Studies, College of Natural Science, Jeonbuk National University.

This article analyzes the "account book" of Kim Young-hoon (1882-1974), which summarizes information about patients at his Bochun Clinic in Seoul (then Gyeongseong) in 1931. Kim Young-hoon was a pivotal figure in the medical scene throughout the Korean Empire, the Japanese occupation, and the early years of the Republic of Korea. He left behind a large amount of documentation during his 60 years of practice at the Bochun Clinic, which he opened in the spring of 1909.

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Approaches to selective and potent inhibition of glioblastoma by vanadyl complexes: Inducing mitotic catastrophe and methuosis.

J Inorg Biochem

August 2024

State Key Laboratories of Natural and Mimetic Drugs and Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China; SATCM Key Laboratory of Compound Drug Detoxification, Peking University Health Science Center, Beijing 100191, China. Electronic address:

Article Synopsis
  • Drug resistance in cancer treatments, particularly glioblastoma multiforme, poses a significant challenge with survival rates below 3%, highlighting the need for new therapeutic approaches.
  • Recent research shows that vanadyl complexes, specifically bis(acetylacetonato)oxidovanadium (IV) (VO(acac)), can effectively induce cell death in glioblastoma cells through mechanisms different from traditional apoptosis.
  • VO(acac) has demonstrated superior effectiveness in reducing glioblastoma cell growth compared to standard treatments, with a high selectivity for cancer cells over normal cells, making it a promising candidate for future therapies.
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Background: Premarital cohabitation is rampant and currently practiced worldwide, particularly in sub-Saharan Africa. It is a known cause of marital instability and divorce. It is also associated with intimate partner violence and harms the psychology of children in later life.

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Insights into tissue accumulation, depletion, and health risk assessment of clopidol in poultry.

Food Addit Contam Part A Chem Anal Control Expo Risk Assess

July 2024

Environmental Safety-Assessment Center, Korea Institute of Toxicology (KIT), Jinju, Republic of Korea.

Clopidol is extensively used in livestock farming and residues of this antibiotic can persist in animal tissues, posing a risk to humans and the environment. In this study, we investigated the depletion of clopidol in various edible tissues of chickens (muscle, liver, kidney, fat, and eggs) using liquid chromatography-tandem mass spectrometry after the administration of a clopidol-contaminated diet (at 250 mg kg for the high (1x) dose). After 14 d of exposure, the clopidol concentrations were highest in eggs (median: 9.

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The ultimate goal of nanoparticle-based phototherapy is to suppress tumor growth. Photothermal therapy (PTT) and photothermal photodynamic therapy (PDT) are two types of physicochemical therapy that use light radiation with multiple wavelength ranges in the near-infrared to treat cancer. When a laser is pointed at tissue, photons are taken in the intercellular and intracellular regions, converting photon energy to heat.

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The futuristic applications of transition metal dichalcogenides for cancer therapy.

Luminescence

May 2024

Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Shoolini University, Solan, India.

The second-most common cause of death resulting from genetic mutations in DNA sequences is cancer. The difficulty in the field of anticancer research is the application of the traditional methods, which also affects normal cells. Mutations, genetic replication alterations, and chromosomal abnormalities have a direct impact on the effectiveness of anticancer drugs at different stages.

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Urinary tract infection (UTI) is the most prevalent urological condition worldwide. Choosing appropriate antibiotics for patients who have fever before receiving a culture result is challenging. This retrospective study enrolled patients 394 patients hospitalized at Gangneung Asan Hospital for UTI from May 2017 to April 2021.

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Integrated high-throughput drug screening microfluidic system for comprehensive ocular toxicity assessment.

Toxicol In Vitro

June 2024

Dept. of Physics, College of Natural Science, Dankook University, Cheonan 31116, Republic of Korea. Electronic address:

Traditional experimental methodologies suffer from a few limitations in the toxicological evaluation of the preservatives added to eye drops. In this study, we overcame these limitations by using a microfluidic device. We developed a microfluidic system featuring a gradient concentration generator for preservative dosage control with microvalves and micropumps, automatically regulated by a programmable Arduino board.

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Current Evidence and Perspectives of Cluster of Differentiation 44 in the Liver's Physiology and Pathology.

Int J Mol Sci

April 2024

Department of Integrated Biological Science, College of Natural Science, Pusan National University, Pusan 46241, Republic of Korea.

Cluster of differentiation 44 (CD44), a multi-functional cell surface receptor, has several variants and is ubiquitously expressed in various cells and tissues. CD44 is well known for its function in cell adhesion and is also involved in diverse cellular responses, such as proliferation, migration, differentiation, and activation. To date, CD44 has been extensively studied in the field of cancer biology and has been proposed as a marker for cancer stem cells.

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Large-scale studies elucidating sex differences in factors impacting prognosis and sex-specific prognossis factors scoring in patients with lung cancer are insufficient. The present study aimed to develop a model to predict sex-specific prognosis factors in Korean patients with lung cancer. This nationwide cohort study included 96,255 patients aged ≥19 years diagnosed with lung cancer and underwent Korean National Health Insurance Service health examinations between January 1, 2005 and December 31, 2015 and followed until 2020.

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Background: Female sex workers (FSWs) face an elevated risk of developing mental health disorders and alcohol use disorders (AUD), which in turn increase their vulnerability to HIV and other sexually transmitted infections (STIs) and other negative outcomes. To effectively address both of these health issues, it is crucial to understand the shared key determinants underlying these illnesses, which is a substantial knowledge gap in Ethiopia and elsewhere in the world. Therefore, this study aimed to identify the common key determinants of depression and AUD among FSWs in Ethiopia using a bivariate multivariable ordinal logistic model.

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This study aimed to evaluate the physiological role of NAMPT associated with MDPC-23 odontoblast cell proliferation. Cell viability was measured using the (DAPI) staining, caspase activation analysis and immunoblotting were performed. Visfatin promoted MDPC-23 odontoblast cell growth in a dose-dependent manner.

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Background: The quality of life (QoL) of women during the postpartum period is affected by their living circumstances, reproductive history, exposure to and use of antenatal care, etc. The quality of life (QoL) issues associated to postpartum health among Ethiopian women have not been adequately examined in studies. Therefore, this study identified associated factors in relation to the health-related quality of life (QOL) among postpartum women in Jimma Town, Ethiopia.

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Article Synopsis
  • The study investigated the effects of the bisphosphonate clodronate disodium (CLO) on bone health in juvenile sheep over 165 days, analyzing factors like bone turnover, density, and microstructure.
  • Forty juvenile sheep were divided into four treatment groups, including a control and three that received CLO at different times, while they were exercised regularly and monitored for physical changes.
  • Results showed no significant effects of CLO on the sheep's skeleton, with minor changes in serum bone biomarkers attributed to time and exercise, suggesting the need for further research on low-dose bisphosphonates in active juvenile populations.
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Association between Daily Dietary Calcium Intake and the Risk of Cardiovascular Disease (CVD) in Postmenopausal Korean Women.

Nutrients

April 2024

Department of Obstetrics and Gynecology, Severance Hospital, Yonsei College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.

We aimed to evaluate the association between daily dietary calcium intake and the risk of cardiovascular disease (CVD) in postmenopausal women using data from the Korean National Health and Nutrition Examination Survey (KNHANES). This cross-sectional study included 12,348 women aged 45-70 years who had reached natural menopause. They were classified into three groups according to daily dietary calcium intake: <400 mg, 400-800 mg, and >800 mg.

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Wastewater-based epidemiology (WBE) has become a valuable tool for monitoring the prevalence of SARS-CoV-2 on university campuses. However, concerns about effectiveness of raw sewage as a COVID-19 early warning system still exist, and it's not clear how useful normalization by simultaneous comparison of Pepper Mild Mottle Virus (PMMoV) is in addressing variations resulting from fecal discharge dilution. This study aims to contribute insights into these aspects by conducting an academic-year field trial at the student residences on the University of Tennessee, Knoxville campus, raw sewage.

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Morroniside Protects C2C12 Myoblasts from Oxidative Damage Caused by ROS-Mediated Mitochondrial Damage and Induction of Endoplasmic Reticulum Stress.

Biomol Ther (Seoul)

May 2024

Basic Research Laboratory for the Regulation of Microplastic-Mediated Diseases, Department of Biochemistry, College of Korean Medicine, Dong-eui University, Busan 47340, Republic of Korea.

Oxidative stress contributes to the onset of chronic diseases in various organs, including muscles. Morroniside, a type of iridoid glycoside contained in , is reported to have advantages as a natural compound that prevents various diseases. However, the question of whether this phytochemical exerts any inhibitory effect against oxidative stress in muscle cells has not been well reported.

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Anti-cancer effects of plant-derived Micromonospora sp. M2 against A549 and MCF-7 cell lines.

Biosci Biotechnol Biochem

May 2024

Research division for Biotechnology, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), Jeongeup, Republic of Korea.

The huge diversity of secondary bioactive metabolites, such as antibiotic and anticancer compounds produced by Micromonospora sp., makes it an attractive target for study. Here, we explored the anti-proliferative activities of Micromonospora sp.

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Inhibition of the RPS6KA1/FoxO1 signaling axis by hydroxycitric acid attenuates HFD-induced obesity through MCE suppression.

Phytomedicine

June 2024

College of Pharmacy and Research Institute of Pharmaceutical Sciences, Woosuk University, Wanju 55338, Republic of Korea. Electronic address:

Background: Because obesity is associated with a hyperplasia-mediated increase in adipose tissue, inhibiting cell proliferation during mitotic clonal expansion (MCE) is a leading strategy for preventing obesity. Although (-)-hydroxycitric acid (HCA) is used to control obesity, the molecular mechanisms underlying its effects on MCE are poorly understood.

Purpose: This study aimed to investigate the potential effects of HCA on MCE and underlying molecular mechanisms affecting adipogenesis and obesity improvements.

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This study investigated the relationship between land use/land cover (LULC) changes and forested landscape fragmentation in the southwestern region of Ethiopia. Satellite images from 1986, 2002 and 2019 were collected and analyzed using standard procedures in ERDAS 2015 software. Fragstat 4.

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