Publications by authors named "Sehyun Kim"

Ni-rich layered oxides are promising cathode materials for lithium-ion batteries but require improved stability to meet performance demands. To address this, doping and surface modification are commonly employed stabilization strategies, each offering distinct benefits. Doping primarily suppresses phase transitions, thereby reducing volume changes, while surface coatings protect the material by minimizing continuous reactions with electrolytes during cycling.

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As the importance of the prevention and premanagement of cardiovascular and cerebrovascular diseases continues to emerge, research is being conducted globally to create and compare risk factor prediction models using health examination big data. In this study, health insurance data were used to predict the incidence of cardiocerebrovascular disease using various models and compare the performance of the models on samples with different initial risk levels. This study analyzed data from 410,859 individuals from the National Health Insurance Service between 2002 and 2019.

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Given the high prevalence of sleep problems in children with autism spectrum disorder (ASD), there is a critical need to examine how sleep problems may be exacerbated for children exposed to social and environmental adversity. Guided by the socio-ecological model, this review aimed to evaluate factors linked to sleep health disparities (SHDs) in children with ASD, determine possible gaps/limitations in existing literature, and identify possible solutions. A scoping review was selected to ascertain what is known about SHDs in ASD.

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Irreproducible wrinkling, characterized by randomly arranged ridges or creases on material surfaces, has significant potential for application in entity identification and anti-counterfeiting. However, active research in this field is hindered because the existing wrinkling methods face challenges in realizing discernible patterns and potential applications of submillimeter-scale wavelength wrinkles are yet to be identified. Herein, we propose a strategy to create unique and irreproducible styrene-ethylene-butylene-styrene (SEBS) wrinkles using "spin evaporation", a technique that rapidly removes the solvent by spinning.

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Background: Profiling circulating cell-free DNA (cfDNA) has become a fundamental practice in cancer medicine, but the effectiveness of cfDNA at elucidating tumor-derived molecular features has not been systematically compared to standard single-lesion tumor biopsies in prospective cohorts of patients. The use of plasma instead of tissue to guide therapy is particularly attractive for patients with small cell lung cancer (SCLC), due to the aggressive clinical course of this cancer, which makes obtaining tumor biopsies exceedingly challenging.

Methods: In this study, we analyzed a prospective cohort of 49 plasma samples obtained before, during, and after treatment from 20 patients with recurrent SCLC.

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Purpose: Interest in the quality of life (QoL) of patients with inflammatory bowel disease (IBD) has recently increased. Although measurement tools have been devised for IBD in general, there is no specific tool for measuring the QoL of patients with ulcerative colitis (UC). Therefore, we developed a QoL questionnaire specifically for patients with UC.

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Although the coronavirus pandemic has ended, new variants of concern (VOCs) continue to emerge. Therefore, novel vaccines targeting VOCs are highly warranted. We initially constructed three recombinant baculovirus-vectored vaccines (AcHERV-COVID19S) carrying the spike genes of the SARS-CoV-2 prototype, Delta, and Omicron BA.

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We report all-soft vertical organic photodetectors composed of only soft components. Chemically and physically enhanced interfacial adhesion between layers enables robust operation under mechanical deformation. Their excellent light-sensing capability and deformable features, combined with powerless operation, promise significant advancements in optoelectronic applications.

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Japanese encephalitis virus (JEV) is a pathogen responsible for high mortality and morbidity rates among children with encephalitis. Since JEV genotype 1 (GI) is the most prevalent strain in South Korea these days, corresponding research and vaccine development is urgently required. Molecular genetic studies on JEV vaccines can be boosted by obtaining genetically stable full-length infectious JEV complementary DNA (cDNA) clones.

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Article Synopsis
  • The study investigates the effects of maternal COVID-19 vaccination and infection on the immune responses of both mothers and their newborns, highlighting a lack of data on neonatal outcomes from pre-pregnancy vaccination.
  • Results show that mothers vaccinated before pregnancy pass on stronger antiviral protection to their infants compared to those who were vaccinated or infected during pregnancy.
  • The findings suggest that pre-pregnancy vaccination contributes significantly to neonatal immunity against SARS-CoV-2 by enhancing the transfer of neutralizing antibodies via the placenta.
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Article Synopsis
  • Profiling cell-free DNA (cfDNA) in cancer medicine, particularly for small cell lung cancer (SCLC), is being compared to standard tumor biopsies to determine its effectiveness in understanding tumor characteristics.
  • A study involving 49 plasma samples from 20 patients showed that cfDNA not only reflects tumor mutations and alterations but can also detect resistance mechanisms not seen in biopsies.
  • The analysis of cfDNA can reliably monitor tumor response and evolution, providing insights into treatment responses and potential subtype-specific therapies for SCLC patients.
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Analyzing the correlation between cephalometric measurements is important for improving our understanding of the anatomy in the oral and maxillofacial region. To minimize bias resulting from the design of the input data and to establish a reference for malocclusion research, the aims of this study were to construct the input set by integrating nine cephalometric analyses and to study the correlation structure of cephalometric variables in Korean adults with normal occlusion. To analyze the complex correlation structure among 65 cephalometric variables, which were based on nine classical cephalometric analyses, network analysis was applied to data obtained from 735 adults (368 males, 367 females) aged 18-25 years with normal occlusion.

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Varicella-zoster virus (VZV) poses lifelong risks, causing varicella and herpes zoster (HZ, shingles). Currently, varicella and HZ vaccines are predominantly live attenuated vaccines or adjuvanted subunit vaccines utilizing VZV glycoprotein E (gE). Here, we propose our vaccine candidates involving a comparative analysis between recombinant baculoviral vector vaccines (AcHERV) and a live attenuated vaccine strain, vOka.

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Organic-inorganic hybrid dielectric nanomaterials are vital for OTFT applications due to their unique combination of organic dielectric and inorganic properties. Despite the challenges in preparing stable titania (TiO) nanoparticles, we successfully synthesized colloidally stable organic-inorganic (O-I) TiO hybrid nanoparticles using an amphiphilic polymer as a stabilizer through a low-temperature sol-gel process. The resulting O-I TiO hybrid sols exhibited long-term stability and formed a high-quality dielectric layer with a high dielectric constant (κ) and minimal leakage current density.

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  The rapid advancement in intelligent bionics has elevated electronic skin to a pivotal component in bionic robots, enabling swift responses to diverse external stimuli. Combining wearable touch sensors with IoT technology lays the groundwork for achieving the versatile functionality of electronic skin. However, most current touch sensors rely on capacitive layer deformations induced by pressure, leading to changes in capacitance values.

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Various types of vaccines have been developed against COVID-19, including vector vaccines. Among the COVID-19 vaccines, AstraZeneca's chimpanzee adenoviral vaccine was the first to be commercialized. For viral vector vaccines, biodistribution studies are critical to vaccine safety, gene delivery, and efficacy.

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A scoping review was performed of trauma-informed psychological interventions to treat anxiety, depression, and posttraumatic stress symptoms in youth in response to natural/biologic disasters. The specific aims were to identify psychosocial interventions used in response to natural/biologic disasters, report the interventions' effectiveness, describe limitations, and provide treatment recommendations and future directions. Of the 45 studies extracted, 28 were on natural disasters and 17 on biologic disasters with the majority related to the COVID-19 pandemic.

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Background: The basis of Age-related macular degeneration (AMD) genetic risk has been well documented; however, few studies have looked at genetic biomarkers of disease progression or treatment response within advanced AMD patients. Here we report the first genome-wide analysis of genetic determinants of low-luminance vision deficit (LLD), which is seen as predictive of visual acuity loss and anti-VEGF treatment response in neovascular AMD patients.

Methods: AMD patients were separated into small- and large-LLD groups for comparison and whole genome sequencing was performed.

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Unlabelled: Insoles are used to treat various foot diseases, including plantar foot, diabetic foot ulcers, and refractory plantar fasciitis. In this study, we investigated the effects of 3-dimensional image-based (3-D) insole in healthy volunteers with no foot diseases. Additionally, the comfort of the 3-D insole was compared with that of a custom-molded insole.

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Article Synopsis
  • The study investigates the effects of BIOGF1K, a ginseng root extract high in ginsenosides, on skin barrier function and how these compounds are absorbed in the skin.
  • Upon treatment with BIOGF1K, human keratinocytes showed improved electrical resistance, indicating enhanced epidermal barrier function, particularly with ginsenosides CK and CY being the most abundant.
  • The research found that CY is converted to CK as it penetrates the skin, suggesting that BIOGF1K could be an effective cosmeceutical for skin health.
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Article Synopsis
  • - The study investigates how retinol is absorbed and converted in human skin cells (HaCaT) and artificial skin, focusing on skin barrier integrity and transport over time.
  • - Key findings show that while retinol maintains the strength of the skin barrier in HaCaT cells, its uptake decreases over time; retinoic acid, a metabolite of retinol, is identified as being transported through the skin layers.
  • - The results suggest that the effectiveness of topical retinol for promoting skin health is dependent on its concentration and exposure duration, emphasizing its potential to enhance both barrier function and overall skin condition.
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Effective delivery of therapeutics to the brain is challenging. Molecular shuttles use receptors expressed on brain endothelial cells to deliver therapeutics. Antibodies targeting transferrin receptor (TfR) have been widely developed as molecular shuttles.

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Endogenous replication stress is a major driver of genomic instability. Current assessments of replication stress are low throughput precluding its comprehensive assessment across tumors. Here we develop and validate a transcriptional profile of replication stress by leveraging established cellular characteristics that portend replication stress.

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We targeted three major species (, , and ) and evaluated their potential distributions using MaxEnt. The results showed that most Asian countries and northern Australia would be suitable for at least one of these pest species, and climate change will expand their habitat northward. All of the developed models were evaluated to be excellent with AUC, TSS, and OR10%.

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Among various volatile organic compounds (VOCs) emitted from human skin, -2-nonenal, benzothiazole, hexyl salicylate, α-hexyl cinnamaldehyde, and isopropyl palmitate are key indicators associated with the degrees of aging. In our study, extraction and determination methods of human body odor are newly developed using headspace-in needle microextraction (HS-INME). The adsorbent was synthesized with graphene oxide:polyaniline/zinc nanorods/zeolitic imidazolate framework-8 (GO:PANI/ZNRs/ZIF-8).

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