Publications by authors named "Hyojin Lee"

Sprayable hydrogels have emerged as a transformative innovation in biomedical technology, offering a versatile, efficient, and minimally invasive platform for various clinical applications. They form gels upon tissue contact, enabling seamless application on even complex surfaces. This property is especially useful in wound care, drug delivery, and tissue engineering, where localized and sustained release of therapeutics is essential.

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Purpose: Return to work (RTW) has been understudied in Asian women with cancer, despite the increasing number of breast cancer survivors (BCS). This study examined RTW among Korean BCS, exploring its associations with cancer-related fatigue, quality of sleep, mental adjustment, and psychosocial factors.

Methods: This cross-sectional study recruited BCS from a hospital, a breast cancer support group, and an online community in Korea between July and August 2019.

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Citronellol is widely utilized in consumer products, including cosmetics, fragrances, and household items. However, despite being considered a relatively safe chemical, the health effects and toxicity mechanisms associated with exposure to high concentrations of citronellol, based on product content, remain inadequately understood. Here, we aimed to analyze the neurological effects of citronellol in zebrafish larvae using behavioral and histological analyses and elucidate the mechanisms underlying its neurotoxicity in vivo.

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We developed a rapid and sensitive diagnostic platform that integrates isothermal viral gene amplification with a nucleic acid lateral flow assay (NALFA) to detect SARS-CoV-2 RNA. Isothermal gene amplification was performed by combining reverse transcription of viral RNA with recombinase polymerase amplification (RPA). In our diagnostic platform, DNA primers for the RPA reaction were modified by appending DNA tails, enabling the synthesis of tailed amplicon DNAs.

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  • The study aims to determine if X-ray imaging can effectively visualize scattered radiation using a semiconductor camera with image processing.
  • Experiments were conducted with a C-arm X-ray device and a portable camera, manipulating the height of a radiation protective board and the size of the irradiation field.
  • The findings showed that the camera could produce colored images representing scattered radiation intensity, confirming its potential for imaging applications.
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Lanthanide-based nanoparticles (Ln-NPs) are highly valued for their unique optical and magnetic properties, making them useful in various scientific fields, including materials science and biomedicine. This study investigated the use of Gum Arabic (GA), a natural, non-toxic biopolymer, as capping agent for Ln-NPs to enhance their biocompatibility and chemical and colloidal stability. Specifically, Er/Yb co-doped NaGdF Ln-NPs were modified with GA, followed by their characterization with respect to upconversion properties and as well as toxicity.

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Purpose: This study aimed to investigate the association between vitamin D levels and periodontitis according to sleep duration in a representative sample of Korean adults.

Materials And Methods: A total of 3535 subjects who participated in the sixth (2013-2014) Korea National Health and Nutrition Examination Survey were examined. Vitamin D deficiency was defined as a 25-hydroxyvitamin D serum concentration of 20 ng/ml.

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  • Dysfunction in dopamine levels contributes to various psychiatric and neurodegenerative disorders, with the NR4A2 protein linked to conditions like Parkinson's disease and ADHD.
  • Researchers used zebrafish mutants to investigate the roles of two nr4a2 paralogs, nr4a2a and nr4a2b, finding distinct effects on dopamine neuron health and behavioral traits related to these conditions.
  • The loss of nr4a2a function mirrored Parkinsonian symptoms, while nr4a2b mutants had increased neurotrophic factors but also showed signs of mitochondrial dysfunction and oxidative stress.
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  • The study aimed to examine how untreated subscapularis muscles change in patients after undergoing supraspinatus repair surgery.
  • A review of 528 patients revealed that 17% experienced changes, such as new or aggravated lesions, which were linked to pre-existing subscapularis issues and other shoulder problems.
  • Despite these changes, clinical scores showed no significant differences between patients with subscapularis changes and those without after surgery.*
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Necroptosis, a cell death mechanism with the characteristics of both apoptosis and necrosis, is proposed as a promising therapeutic approach for cancer therapy. Induction of necroptosis for cancer therapy may be possible through the regulation of the expression of a key factor gene receptor-interacting protein kinase-3 (RIPK3) via in vitro transcription (IVT) mRNA delivery. However, mRNA is susceptible to degradation and has a low delivery efficiency, which highlights the requirement of a proper delivery vehicle for intracellular delivery.

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Objective: The purpose of this study was to establish an oral health activity assessment tool for older people and evaluate its validity.

Background: To provide reasonable and efficient oral health promotion services with limited medical resources, a tool including categories and items of oral health promotion activities for older people should be prepared.

Materials And Methods: The tool initially consisted of 76 items on oral health promotion activities for older people classified into assessment-performance-evaluation stages.

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Adverse childhood experiences (ACEs) have negative impacts on women with children, including psychosocial and general health problems. However, there is limited research investigating ACEs identifying the characteristics of distinct subgroups according to the frequency of ACEs. Utilizing the national dataset of the Family with Children Life Experience 2017, this study aimed to classify patterns of ACEs based on the total number of types of ACEs and the types of predominant events, and to examine differences in general and psychological characteristics, as well as experiences of violence in adulthood among the classes identified.

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  • - Severe fever with thrombocytopenia syndrome (SFTS) is a serious emerging infection in South Korea with a case fatality rate of about 16.8%, which has notably increased since its initial endemic phase from 2016 to 2021.
  • - Key complications among patients include bleeding, hemophagocytic lymphohistiocytosis, and infections like bacteremia and invasive pulmonary aspergillosis, with rapid clinical deterioration observed within days of hospital admission.
  • - Factors contributing to higher fatality rates include older age, co-infections at admission, and specific lab results, highlighting the urgent need for effective treatments beyond supportive care.
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  • The Korean Society of Infectious Diseases has been updating adult immunization guidelines since 2007, with major revisions made for seven vaccines in 2023.
  • Key changes include enhanced influenza vaccines for the elderly, the introduction of a recombinant herpes zoster vaccine, and updates on pneumococcal vaccine options.
  • Other notable adjustments involve extending the HPV vaccine eligibility age, adding recommendations for meningococcal B vaccine, and altering pre-exposure rabies vaccine doses, while older guidelines remain for unmentioned vaccines.
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Three Gram-stain-negative, aerobic, non-motile and coccobacilli-shaped bacterial strains, designated as NPKOSM-4, NPKOSM-8 and MO-31, were isolated from rice paddy soil. They had 96.5-100 % 16S rRNA gene sequence similarity to each other, and strains NPKOSM-4 and NPKOSM-8 showed 100 % 16S rRNA gene sequence similarity, confirming that they were the same species.

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High-throughput transcriptomics (HTTr) is increasingly applied to zebrafish embryos to survey the toxicological effects of environmental chemicals. Before the adoption of this approach in regulatory testing, it is essential to characterize background noise in order to guide experimental designs. We thus empirically quantified the HTTr false discovery rate (FDR) across different embryo pool sizes, sample sizes, and concentration groups for toxicology studies.

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Background: Roflumilast is effective in reducing acute exacerbation in patients with chronic obstructive pulmonary disease (COPD) at high risk of severe exacerbation. Clinical traits related to the benefits of roflumilast need to be evaluated in patients with COPD.

Methods: A longitudinal observational study in patients newly diagnosed with COPD was conducted using claims data from the Health Insurance Review and Assessment Service in South Korea from 2012-2020 after a 2-year washout period.

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Purpose: This study aimed to explore the existing literature on frailty experienced by patients with prostate cancer (PC) receiving androgen deprivation therapy (ADT).

Materials And Methods: Database and manual searches were conducted to identify relevant studies published in English, with no limitation on the year of publication, according to the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews guidelines. Four databases-PubMed, Cochrane Library, EMBASE, and CINAHL-were used for database searches and reference lists, related journals, and Google Scholar were used for manual searches.

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Two novel bacterial strains, designated as COR-2 and CR-8, were isolated from paddy soil. These isolates were aerobic, Gram-stain-negative, non-spore-forming, non-motile, rod-shaped, and formed orange-coloured colonies. Phylogenetic analysis based on 16S rRNA gene sequences showed that two strains formed a clear phylogenetic lineage with the genus .

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The combination of targeted therapy with immune checkpoint inhibition (ICI) is an area of intense interest. We studied the interaction of fibroblast growth factor receptor (FGFR) inhibition with ICI in urothelial carcinoma (UC) of the bladder, in which FGFR3 is altered in 50% of cases. Using an FGFR3-driven, Trp53-mutant genetically engineered murine model (UPFL), we demonstrate that UPFL tumors recapitulate the histology and molecular subtype of their FGFR3-altered human counterparts.

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Persistent organic pollutants (POPs) are toxic chemicals that can accumulate in the human body, and particularly in adipose tissue. POPs can induce metabolic diseases via mitochondrial dysfunction and can also cause cancer, obesity, and cardiovascular and neurodegenerative diseases. Although the effects of POPs were studied by evaluating mitochondrial function, which is fundamental in investigating the etiologies of various metabolic diseases, the physiological impact of POPs released by the decomposition of fat in adipose tissue is barely understood.

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Understanding tumor's microenvironment is one of the key factors in the cancer therapy. Especially, from the perspective of immunotherapy, immune desert or cold tumor is referred as significantly downregulated T cell in-filtration due to lack of immune surveillance in the tumor microenvironment. There are many studies are dedicated to convert cold tumor to hot tumor for enhancing the efficacy of immunotherapy.

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