Publications by authors named "Yuna Han"

In this study, we present the development of an innovative electrochemical biosensor integrated into a microneedle-based system for non-invasive and sensitive quantification of cholesterol levels in interstitial fluid (ISF). The biosensor employs a graphene-based electrode with a polyelectrolyte interlayer to immobilize cholesterol oxidase (ChOx), enabling selective cholesterol detection. Graphene oxide is electrochemically reduced to form a conductive layer, and PANI is chosen as the optimal polyelectrolyte for ChOx immobilization.

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Objective: COVID-19 has led to significant morbidity and mortality globally. Post-COVID sequelae can persist beyond the acute and subacute phases of infection, often termed post-COVID syndrome (PCS). There is limited evidence on the appropriate rehabilitation for people with PCS.

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In recent years, the increase in high-calorie diets and sedentary lifestyles has made obesity a global public health problem. An unbalanced diet promotes the production of proinflammatory cytokines and causes redox imbalance in the body. Phenolics have potent antioxidant activity and cytoprotective ability.

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Continuous glucose monitoring (CGM) allows patients with diabetes to manage critical disease effectively and autonomously and prevent exacerbation. A painless, wireless, compact, and minimally invasive device that can provide CGM is essential for monitoring the health conditions of freely moving patients with diabetes. Here, we propose a glucose-responsive fluorescence-based highly sensitive biodegradable microneedle CGM system.

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: With the aging population, the incidence of degenerative lumbar spinal stenosis (LSS) is increasing. Sarcopenia is an age-related muscular decrease. Although epidural balloon neuroplasty is effective in patients with LSS refractory to conventional treatments, its effect has not been assessed in patients with sarcopenia.

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Hypoxia plays an essential role in the pathogenesis of various liver diseases, and albumin is one of the important biomarkers secreted by the liver. In this study, we developed an albumin monitoring system composed of hepatic hypoxia-on-a-chip and an albumin sensor to study liver function change due to hypoxia. In hepatic hypoxia-on-a-chip, we vertically stack an oxygen-scavenging channel on a liver on a chip with a thin gas-permeable membrane in the middle.

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Identification of critical source areas (CSAs) for non-point source (NPS) pollution is of great significance for environment governance and prevention. However, the CSAs are generally characterized as great spatial dispersion, and spatially heterogeneous precipitation has a great influence on the spatial distribution of nutrient yields. Therefore, we identify the CSAs for nutrient yields in an agricultural watershed of Northeast China at hydrological response units (HRUs) scale based on the Soil and Water Assessment Tool (SWAT), assess the impacts of spatially heterogeneity of precipitation on the identification of the CSAs, analyze the sensitivity of nutrient yields to precipitation by scenarios analysis method, and further identify priority management areas (PMAs) that have poor ability to retain nutrients.

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  • Healthy aquatic ecosystems support sustainable human development and are greatly affected by water quality, which impacts macroinvertebrate communities.
  • The study developed a framework to analyze the relationship between macroinvertebrate communities and water quality factors in urban rivers, using the North Canal River in Beijing as a case study.
  • Key findings identified fluoride, biochemical oxygen demand, ammonia-nitrogen, and total phosphorus as crucial water quality factors influencing macroinvertebrate communities, with results indicating generally unhealthy river conditions, especially downstream.
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  • * The scaffolds demonstrated promising mechanical properties, such as flexural strength and porosity, making them viable substitutes for human bone.
  • * Biocompatibility tests showed that stem cells grew well in the pores of the specimens coated with decellularized extracellular matrix (dECM), unlike those without the coating.
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In keloids, the mechanism underlying the excessive accumulation of extracellular matrix after injury of the skin is unclear, and there is no effective treatment because of the incomplete understanding of their pathogenesis; thus, a high recurrence rate is observed. We studied a new marker of keloids to determine a new treatment strategy. First, the keloid gene expression profile (GSE44270) was analyzed (downloaded from the Gene Expression Omnibus database) and the new keloid marker candidate, epidermal growth factor (EGF)-like repeats and discoidin I-like domains 3 (EDIL3) which were upregulated in keloid samples was identified.

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Objective: Contrast-enhanced ultrasound (CEUS) is a new noninvasive modality for the diagnosis of thyroid nodules. However, the performance of CEUS in differentiating malignant and benign thyroid nodules has not been systematically evaluated. This meta-analysis was performed to assess the accuracy of CEUS in diagnosing thyroid nodules.

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  • Lipid content greatly influences the quality of fish meat, but the specific mechanisms behind lipid distribution in different fish species remain unclear.
  • The study compared lipid accumulation in torafugu and red seabream, finding that torafugu had a much higher liver lipid content while red seabream had significant visceral fat.
  • Analysis of lipoprotein lipase (LPL) and peroxisome proliferator-activated receptor gamma (PPARγ) indicated that their expression levels are linked to the distinct lipid distribution patterns in the two fish species, highlighting LPL1's key role in this process for torafugu.
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Among primary cardiac tumors, hemangiomas are relatively rare, with a reported incidence of 2.8%. To date, less than 100 cases have been reported in literature.

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Smad7 plays an essential role in the negative-feedback regulation of transforming growth factor beta (TGF-beta) signaling by inhibiting TGF-beta signaling at the receptor level. It can interfere with binding to type I receptors and thus activation of receptor-regulated Smads or recruit the E3 ubiquitin ligase Smurf to receptors and thus target them for degradation. Here, we report that Smad7 is predominantly localized in the nucleus of Hep3B cells.

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