Publications by authors named "Hye Hwang"

Sarcoidosis is a granulomatous disease affecting the lungs in over 90\% of patients. Qualitative assessment of chest CT by radiologists is standard clinical practice and reliable quantification of disease from CT would support ongoing efforts to identify sarcoidosis phenotypes. Standard imaging feature engineering techniques such as radiomics suffer from extreme sensitivity to image acquisition and processing, potentially impeding generalizability of research to clinical populations.

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This study examines the pharmacokinetics and bioavailability of phlorotannins from in rats following intravenous and oral administration. Known for their potent antioxidant, anti-inflammatory and many other bioactivities, these phlorotannins, particularly dieckol, 8,8'-bieckol, and phlorofucofuroeckol-A (PFF-A), were analyzed using high-performance liquid chromatography coupled with tandem mass spectrometry. Intravenous administration at 10 mg/kg allowed detectability in plasma for up to 36 h for dieckol and 8,8'-bieckol, but only 2 h for PFF-A.

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Drosophila oogenesis has long been an important model for understanding myriad cellular processes controlling development, RNA biology and patterning. Flies are easily fed drugs to disrupt various molecular pathways. However, this is often done under poor nutrient conditions that adversely affect oogenesis, thus making analysis challenging.

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Introduction: This descriptive study examined the relationship between body image perception and smoking status among women aged 19-64 years in Korea, using data from the Korea National Health and Nutrition Examination Survey (KNHANES).

Methods: This study is a secondary analysis of data gathered from the KNHANES between 2014 and 2020, encompassing 12515 women aged 19-64 years. The final study group consisted of 742 current smokers (CS), 132 hidden smokers (HS), and 11641 non-smokers (NS).

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: Distal bile duct cancer is an aggressive malignancy. Tumor-infiltrating immune cells (TIICs) in the tumor microenvironment are crucial for predicting prognosis in various cancers. In this study, we analyzed TIICs based on CD11b, CD163, and CD8 expression, and evaluated their association with clinicopathologic factors and prognosis in distal bile duct cancer.

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oogenesis has long been an important model for understanding myriad cellular processes controlling development, RNA biology, and patterning. Flies are easily fed drugs to disrupt various molecular pathways. However, this is often done under poor nutrient conditions that adversely affect oogenesis, thus making analysis challenging.

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Background: The Wnt/β-catenin signaling pathway is crucial for the development, initiation, and growth of hair follicles (HFs). The Dickkopf-related protein (DKK) gene family encodes secreted proteins modulating the Wnt/β-catenin signaling pathway. Studies have reported that DKK1 promotes the regression of HFs and serves as a pathogenic mediator in male pattern baldness.

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The cytoplasm is populated with many ribonucleoprotein (RNP) particles that post-transcriptionally regulate mRNAs. These membraneless organelles assemble and disassemble in response to stress, performing functions such as sequestering stalled translation pre-initiation complexes or mRNA storage, repression and decay. Clueless (Clu) is a conserved multi-domain ribonucleoprotein essential for mitochondrial function that forms dynamic particles within the cytoplasm.

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Article Synopsis
  • Interstitial lung disease (ILD) includes various lung disorders, requiring a mix of clinical, imaging, and pathologic data for assessment, with imaging being crucial for noninvasive diagnosis and monitoring.
  • Traditional CT scans for ILD diagnosis have issues with reader variability, prompting a shift towards automated quantitative CT, which uses computer analysis for more consistent evaluation.
  • The review focuses on the importance of accurately identifying interstitial lung abnormalities (ILAs) detected on CT scans and how advancements in machine learning and deep learning can enhance the diagnosis and management of ILD.
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Objective: To evaluate the role of visual and quantitative chest CT parameters in assessing treatment response in patients with severe asthma.

Materials And Methods: Korean participants enrolled in a prospective multicenter study, named the Precision Medicine Intervention in Severe Asthma study, from May 2020 to August 2021, underwent baseline and follow-up chest CT scans (inspiration/expiration) 10-12 months apart, before and after biologic treatment. Two radiologists scored bronchiectasis severity and mucus plugging extent.

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Objective: Sarcoidosis is a granulomatous disease affecting the lungs in over 90% of patients. Qualitative assessment of chest CT by radiologists is standard clinical practice and reliable quantification of disease from CT would support ongoing efforts to identify sarcoidosis phenotypes. Standard imaging feature engineering techniques such as radiomics suffer from extreme sensitivity to image acquisition and processing, potentially impeding generalizability of research to clinical populations.

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With the approval of antifibrotic medications to treat patients with idiopathic pulmonary fibrosis and progressive pulmonary fibrosis, radiologists have an integral role in diagnosing these entities and guiding treatment decisions. CT features of early pulmonary fibrosis include irregular thickening of interlobular septa, pleura, and intralobular linear structures, with subsequent progression to reticular abnormality, traction bronchiectasis or bronchiolectasis, and honeycombing. CT patterns of fibrotic lung disease can often be reliably classified on the basis of the CT features and distribution of the condition.

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Article Synopsis
  • Cutaneous squamous cell carcinoma (cSCC) is a common skin cancer, and this study investigates genetic mutations linked to its progression from the epidermis to the deeper dermis.
  • Researchers used whole-exome sequencing on cSCC tissue samples from patients, uncovering over 8,800 mutations and highlighting significant genetic variations between superficial and deep tumor regions.
  • Key findings suggest that mutations affecting cell junctions and cell adhesion are crucial for the aggressive behavior of cSCC, with 29 specific genes identified as important for dermal invasion, emphasizing the need to analyze multiple tumor regions for a comprehensive understanding.
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A hallmark of fetal alcohol spectrum disorders (FASD) is neurobehavioral deficits that still do not have effective treatment. Here, we present that reduction of Apolipoprotein E (APOE) is critically involved in neurobehavioral deficits in FASD. We show that prenatal alcohol exposure (PAE) changes chromatin accessibility of Apoe locus, and causes reduction of APOE levels in both the brain and peripheral blood in postnatal mice.

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The aim of our study was to assess the performance of content-based image retrieval (CBIR) for similar chest computed tomography (CT) in obstructive lung disease. This retrospective study included patients with obstructive lung disease who underwent volumetric chest CT scans. The CBIR database included 600 chest CT scans from 541 patients.

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Aim: To investigate the difference in the initial surgical results between a new monofocal intraocular lens (IOL) with enhanced intermediate vision and the standard monofocal IOL in patients with retinal disease.

Methods: We retrospectively reviewed the medical records of patients with retinal disease who underwent cataract surgery due to accompanying cataracts. Types of retinal diseases were investigated and best-corrected distant visual acuity, distant uncorrected visual acuity (UCVA), intermediate UCVA, near UCVA, and spherical equivalent were recorded at each visit.

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Background: Alopecia, a benign dermatologic condition affecting both genders, particularly harms female patients due to psychosocial effects. Female pattern hair loss (FPHL), the primary cause of hair loss in women, lacks sufficient Korean epidemiological studies examining its psychosocial aspects.

Objective: This study aimed to explore FPHL's psychosocial impacts, including quality of life (QoL), depression, anxiety, medical consumption, and hair loss factors in Korean women.

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Computed tomography (CT) enables noninvasive diagnosis of usual interstitial pneumonia (UIP), but enhanced image analyses are needed to overcome the limitations of visual assessment. Apply multiple instance learning (MIL) to develop an explainable deep learning algorithm for prediction of UIP from CT and validate its performance in independent cohorts. We trained an MIL algorithm using a pooled dataset ( = 2,143) and tested it in three independent populations: data from a prior publication ( = 127), a single-institution clinical cohort ( = 239), and a national registry of patients with pulmonary fibrosis ( = 979).

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Objectives: Palliative care in neurology is a recent specialty to improve the quality of life of patients with severe neurological diseases. This study aims to determine the frequency of neurological inpatients who had indication of palliative care, and evaluate the symptomatology, demographic profile, the need for supportive measures, advance directives for life and medical history of patients in a tertiary hospital in Brazil.

Methods: This cross-sectional analytical study evaluated all patients admitted to the neurological semi-intensive care unit (ICU) at Hospital Israelita Albert Einstein with neurological conditions from February through August 2022.

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PELVIS syndrome describes the constellation of perineal hemangioma, external genitalia malformations, lipomyelomeningocele, vesicorenal abnormalities, imperforate anus, and skin tag. A 2-month-old girl presented with infantile hemangioma on her perineum and genitalia with imperforate anus, rectovaginal fistula and perineal skin tag at birth. Under the impression of PELVIS syndrome, consequential spinal sonography was conducted and revealed an intrasacral meningocele without clinical neurologic deficit.

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Background: The in-depth understanding of human anatomy is the foundation for safety in nursing practice. Augmented reality is an emerging technology that can be used for integrative learning in nursing education.

Objective: The study aimed to develop a human anatomy-based skill training system and pilot test its usability and feasibility.

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Purpose: To determine the pointwise relationships of central visual field (VF) defects with macular ganglion cell loss and macular vessel density (VD) loss during various stages of glaucoma.

Methods: Eyes with primary open-angle glaucoma (POAG) were subjected to optical coherence tomography (OCT) and OCT angiography (OCTA) to evaluate macular ganglion cell layer (GCL) thickness and macular VD in the superficial and deep vascular complexes (SVC and DVC). OCT, OCTA, and VF locations were matched after correcting for retinal ganglion cell (RGC) displacement.

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Due to global climate change, adverse environments like drought in agricultural production are occurring frequently, increasing the need for research to ensure stable crop production. This study was conducted to determine the effect of artificial hydrogen peroxide treatment on sorghum growth to induce stress resistance in drought conditions. Hyperspectral analysis was performed to rapidly find out the effects of drought and hydrogen peroxide treatment to estimate the physiological parameters of plants related to drought and calculate the vegetation indices through PLS analysis based on hyperspectral data.

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