Publications by authors named "Hye Yeon Park"

Purpose: Human epidermal growth factor receptor 2 (HER2) is amplified or overexpressed in various malignancies, including breast and gastric cancers, and is associated with poor prognosis. Although HER2-targeted therapies, such as trastuzumab, improve outcomes in HER2-positive tumors, resistance often develops, and HER2-low tumors remain largely untargeted. Trastuzumab deruxtecan (T-DXd; DS-8201a) is a HER2-targeted antibody-drug conjugate with potent activity in HER2-positive and HER2-low tumors.

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In Parkinson's disease (PD), long-term 3,4-dihydroxy-L-phenylalanine (L-dopa) therapy leads to the development of motor complications, including L-dopa-induced dyskinesia (LID). Increased numbers of reactive astrocytes in the brains of patients with PD are a key feature of this disease. Astrocytes are involved in the development of LID; however, whether the regulation of astrocytic activity influences LID development remains unclear.

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Autologous stem cell transplantation (ASCT) is integral to treating newly diagnosed multiple myeloma (MM). While novel therapies improve response rates, they also hinder stem cell mobilization. This study evaluates the impacts of induction regimens on mobilization, collection, and ASCT outcomes.

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The aging process is associated with a decline in certain cognitive abilities, including learning and memory. This age‑related cognitive decline is associated with a reduction in neurogenesis and alterations in the cholinergic system. (HJ), an ornamental plant in the family , has been reported to exert beneficial effects against neurodegenerative pathophysiologies in mouse models of disorders such as Alzheimer's and Parkinson's disease.

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L-dopa-induced dyskinesia (LID) is an incapacitating complication of long-term administration of L-dopa therapy that commonly affects patients with Parkinson's disease (PD) due to the widespread use of the causative drug. Herein, we investigated the therapeutic potential of sitagliptin, a drug used to treat type 2 diabetes mellitus, to treat LID. 6-hydroxydopamine (6-OHDA) was unilaterally injected into the left side of the substantia nigra pas compacta to induce a mouse model of PD.

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  • * The study investigated the effects of combining angiotensin-converting enzyme inhibitors (ACEIs) with L-dopa in a mouse model of PD to see if it could reduce these negative side effects.
  • * Results showed that using ACEIs like perindopril, captopril, and enalapril alongside L-dopa significantly reduced the development of L-dopa-induced dyskinesia (LID) and decreased certain inflammatory markers in the brain of PD-affected mice.
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Accurate urban green space (UGS) measurement has become crucial for landscape analysis. This paper reviews the recent technological breakthroughs in deep learning (DL)-based semantic segmentation, emphasizing efficient landscape analysis, and integrating greenness measurements. It explores quantitative greenness measures applied through semantic segmentation, categorized into the plan view- and the perspective view-based methods, like the Land Class Classification (LCC) with green objects and the Green View Index (GVI) based on street photographs.

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  • The gut microbiota plays a significant role in maintaining immune health and brain function, with emerging research linking it to cognitive decline and dementia in older adults.
  • The study explored the effects of a specific gut bacterium, Agathobaculum butyriciproducens SR79, on cognitive impairment in aged mice, using various behavioral tests to assess changes in cognitive performance.
  • Results indicated that SR79 improved cognitive function in aged mice without affecting other behaviors, and it influenced brain health by altering dendritic spines and reducing astrocyte activation, suggesting it could be a promising treatment for age-related cognitive decline.
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  • The rising demand for self-powered photodetectors (PDs) for near-infrared (NIR) applications, like LIDAR and object recognition, is addressed through advancements in lead sulfide quantum dot-based photodetectors (PbS QPDs).
  • A key challenge for PbS QPDs is their self-powered operation, which is negatively affected by carrier traps from surface defects and poor band alignment in the zinc oxide nanoparticle (ZnO NP) electron-transport layer (ETL).
  • This study presents a novel treatment using azide ions on the ZnO NP ETL, resulting in improved carrier lifetime, mobility, and overall performance metrics, showing significant enhancements in responsivity and detectivity
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The implementation of an energy storage system (ESS) as a container-type package is common due to its ease of installation, management, and safety. The control of the operating environment of an ESS mainly considers the temperature rise due to the heat generated through the battery operation. However, the relative humidity of the container often increases by over 75% in many cases because of the operation of the air conditioner which pursues temperature-first control.

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  • The study explores the social stigma and discrimination faced by COVID-19 survivors in South Korea during the first two years of the pandemic.
  • Out of 52 participants, 45 reported experiencing stigma in their personal relationships, workplaces, and children's schools, with sexual minorities facing heightened discrimination.
  • The findings highlight how survivors felt they caused trouble and raised fears of virus transmission, emphasizing the cultural contexts that shape stigma in East Asia.
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Parkinson's disease (PD) is the second-most prevalent neurodegenerative disease and is characterized by dopaminergic neuronal death in the midbrain. Recently, the association between alterations in PD pathology and the gut microbiota has been explored. Microbiota-targeted interventions have been suggested as a novel therapeutic approach for PD.

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Background: Neuroinflammation plays an important role in cognitive decline and memory impairment in neurodegenerative disorders. Previously, we demonstrated that Humulus japonicus (HJ) has anti-inflammatory effects in rodent models of Alzheimer's disease and Parkinson's disease. The present study aimed to examine the protective potential of HJ extracts against lipopolysaccharide (LPS)-induced cognitive impairment and scopolamine-induced amnesia in mouse models.

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produces neurotoxic substrates that can cause fatal flaccid paralysis called botulism. These neurotoxins are classified into types A-G. Several botulism cases were recorded in 2012-2013 in the Gyeonggi province, South Korea.

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Aims/introduction: The purpose of this study was to investigate the impact of vision and hearing impairments on the risk of adverse cardiovascular outcomes and mortality in patients with type 2 diabetes using a nationwide longitudinal cohort.

Materials And Methods: We enrolled 771,128 patients with type 2 diabetes who underwent the National Health Screening Program in 2009. We carried out Cox proportional hazards regression analyses to calculate the hazard ratios (HR) of myocardial infarction (MI), stroke, and mortality in those with or without vision and hearing impairments.

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(HJ) is a traditional herbal medicine that exhibits anti‑inflammatory, antimicrobial and anti‑tumor effects that is used for the treatment of hypertension, pulmonary disease and leprosy. Recently, it has also been reported that HJ demonstrates neuroprotective properties in animal models of neurodegenerative diseases. The current study hypothesised that the administration of HJ would exhibit therapeutic effects in autism spectrum disorder (ASD), a neurodevelopmental disorder with lifelong consequences.

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Autism spectrum disorder (ASD) is a neurodevelopment disorder characterized by deficits in social interaction and restrictive, repetitive, and stereotypical patterns of behavior. However, there is no pharmacological drug that is currently used to target these core ASD symptoms. Sodium phenylbutyrate (NaPB) is a well-known long-term treatment of urea cycle disorders in children.

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  • Alzheimer's disease (AD) is a common neurodegenerative disorder characterized by symptoms like memory loss and cognitive decline, with no cure currently available.
  • Recent research suggests that altering gut microbiota may offer new treatment options, focusing on a specific bacterium called Agathobaculum butyriciproducens (SR79), which produces butyric acid.
  • In studies using mouse models with AD, SR79 demonstrated improvements in cognitive function, reduced inflammation, and decreased amyloid plaque formation, indicating its potential as a therapeutic intervention for AD.
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The dopamine precursor 3,4‑dihydroxyphenyl‑ l‑alanine (L‑DOPA) is the most widely used symptomatic treatment for Parkinson's disease (PD); however, its prolonged use is associated with L‑DOPA‑induced dyskinesia in more than half of patients after 10 years of treatment. The present study investigated whether co‑treatment with β‑Lapachone, a natural compound, and L‑DOPA has protective effects in a 6‑hydroxydopamine (6‑OHDA)‑induced mouse model of PD. Unilateral 6‑OHDA‑lesioned mice were treated with vehicle or β‑Lapachone (10 mg/kg/day) and L‑DOPA for 11 days.

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  • PTPRT plays a key role in regulating the formation of synapses and the growth of dendrites in hippocampal neurons, which is important for normal brain function.
  • Chronic stress and lack of PTPRT lead to increased depression-like behaviors in mice, affecting both their neurogenic ability and synaptic transmission.
  • Alterations in the expression and phosphorylation of certain proteins, including GluR2 and GAT3, are linked to PTPRT deficiency, which contributes to the development of depressive disorders.
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Parkinson's disease (PD) is a neurodegenerative disease characterized by the progressive loss of dopaminergic neurons in the substantia nigra, leading to motor symptoms. Despite the remarkable improvements in the management of PD in recent decades, many patients remain significantly disabled. Metformin is a primary medication for the management of type 2 diabetes.

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The NAD(P)H:quinone oxidoreductase 1 (NQO1) gene encodes a cytosolic flavoenzyme that catalyzes the two-electron reduction of quinones to hydroquinones. A polymorphic form of NQO1 is associated with mood disorders such as schizophrenia. However, the role of NQO1 in dopaminergic system has not yet been elucidated.

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  • The study investigates the differences in cytokine profiles of the vitreous fluid in eyes with epiretinal membrane, distinguishing between those with and without an ectopic inner foveal layer (EIFL).
  • A total of 60 eyes were analyzed, revealing that eyes with EIFL had worse visual acuity, increased central foveal thickness, and higher levels of specific cytokines (CD163 and macrophage colony-stimulating factor) compared to those without EIFL.
  • The results suggest that the presence of EIFL is associated with higher levels of M2 macrophage markers, indicating that these cells may play a role in glial cell proliferation and the formation of EIFL.
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Piperlongumine (PL), a biologically active compound from the Piper species, has been shown to exert various pharmacological effects in a number of conditions, including tumours, diabetes, pain, psychiatric disorders and neurodegenerative disease. In this study, we evaluated the therapeutic effects of PL on hippocampal function and cognition decline in aged mice. PL (50 mg/kg/day) was intragastrically administrated to 23‑month‑old female C57BL/6J mice for 8 weeks.

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  • Histone acetylation plays a crucial role in gene expression, impacting synaptic plasticity in the brain, but its effect on L-DOPA-induced dyskinesia in Parkinson's disease has not been well studied.
  • This study aimed to evaluate the impact of natural HAT inhibitors (anacardic acid, garcinol, and curcumin) on L-DOPA-induced dyskinesia using a mouse model of Parkinson's disease.
  • The results showed that these HAT inhibitors reduced dyskinesia severity without affecting the effectiveness of L-DOPA treatment and decreased specific gene expression levels in the brain, suggesting potential therapeutic benefits for managing dyskinesia in patients.
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