Publications by authors named "J-K Park"

Background/aims: The incidence of steatotic liver disease (SLD) is increasing across all age groups as the incidence of obesity increases worldwide. The existing noninvasive prediction models for SLD require laboratory tests or imaging and perform poorly in the early diagnosis of infrequently screened populations such as young adults and individuals with healthcare disparities. We developed a machine learning-based point-of-care prediction model for SLD that is readily available to the broader population with the aim of facilitating early detection and timely intervention and ultimately reducing the burden of SLD.

View Article and Find Full Text PDF
Article Synopsis
  • There is limited research linking breast MRI surveillance to the incidence of advanced second breast cancer in women with a personal history of breast cancer.
  • A study conducted on women who underwent breast cancer surgery between 2009 and 2014 found that those who received MRI surveillance had significantly lower odds of developing advanced second breast cancer compared to those who did not.
  • The findings suggest that surveillance breast MRI may be an effective tool for monitoring women with a personal history of breast cancer, potentially leading to earlier detection and better outcomes.
View Article and Find Full Text PDF

: The development of a five-in-one vaccine microneedle patch (five-in-one MN patch) aims to address challenges in administering vaccines against Diphtheria (DT), Tetanus (TT), Pertussis (wP), Hepatitis B (HBsAg), and type b (Hib). Combining multiple vaccines into a single patch offers a novel solution to improve vaccine accessibility, stability, and delivery efficiency, particularly in resource-limited settings. : The five-in-one MN patch consists of four distinct microneedle arrays: DT and TT vaccines are coated together on one array, while wP, HepB, and Hib vaccines are coated separately on individual arrays.

View Article and Find Full Text PDF

In general, the nerve cells of the peripheral nervous system regenerate normally within a certain period after the physical damage of their axon. However, when peripheral nerves are transected by trauma or tissue extraction for cancer treatment, spontaneous nerve regeneration cannot occur. Therefore, it is necessary to perform microsurgery to connect the transected nerve directly or insert a nerve conduit to connect it.

View Article and Find Full Text PDF
Article Synopsis
  • Systemic lupus erythematosus (SLE) is a chronic autoimmune disease where hyper-activated B cells produce autoantibodies, causing symptoms.
  • Research found that naïve mesenchymal stem cells (MSCs) inhibit T cell activity but not B cell IgM production, leading to a study on how to enhance MSC function.
  • Treatment with ingenol-3-angelate (I3A) primes MSCs to inhibit B cells through the secretion of TGF-β1, showing improved effectiveness in alleviating SLE symptoms in mice.
View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to compare the capabilities of GPT-4 and Gemini, two large language models, in analyzing serial radiology reports to identify oncological issues needing clinical attention.
  • It involved 205 patients with two consecutive radiological reports and used a three-step task for the LLMs, while two radiologists established a six-level categorization of tumor findings as a ground truth.
  • Results indicated that GPT-4 outperformed Gemini in terms of accuracy (96.2% vs 91.7%), precision in identifying tumor-related findings, and correctly determining tumor status, demonstrating the effectiveness of LLMs in oncological surveillance.
View Article and Find Full Text PDF

Objectives: Concern about contrast-induced acute kidney injury (CI-AKI) may delay the timely administration of contrast media for computed tomography (CT). The precise causative effect of iodinated contrast media on CI-AKI and its relevant risk factors remains an area of ongoing investigation. Therefore, this study aimed to determine the risk of CI-AKI following contrast-enhanced CT and its predisposing risk factors.

View Article and Find Full Text PDF
Article Synopsis
  • Renal cell carcinoma (RCC) is a severe kidney cancer with a poor prognosis, and the role of Niemann-Pick C1-Like 1 (NPC1L1) in its progression is not well understood.
  • In this study, researchers compared NPC1L1 expression in normal versus RCC tissues and found that lower levels in RCC, especially in certain subtypes, were linked to worse patient survival.
  • The findings indicate that higher NPC1L1 levels could be a potential independent prognostic marker for bad outcomes in RCC, necessitating further research on its mechanisms in cancer progression.
View Article and Find Full Text PDF

Adenocarcinomas from multiple tissues can converge to treatment-resistant small cell neuroendocrine (SCN) cancers composed of ASCL1, POU2F3, NEUROD1, and YAP1 subtypes. We investigated how mitochondrial metabolism influences SCN cancer (SCNC) progression. Extensive bioinformatics analyses encompassing thousands of patient tumors and human cancer cell lines uncovered enhanced expression of proliferator-activatedreceptor gamma coactivator 1-alpha (PGC-1α), a potent regulator of mitochondrial oxidative phosphorylation (OXPHOS), across several SCNCs.

View Article and Find Full Text PDF

Background And Purpose: Rescue stent (RS) is an accepted rescue option after failed mechanical thrombectomy (MT) for acute ischemic stroke due to intracranial atherosclerotic stenosis (ICAS)-related large vessel occlusion (LVO). However, the long-term outcomes (≥ 12 months) of RS have not yet been elucidated.

Materials And Methods: We retrospectively analyzed the data of 154 patients with RS for ICAS-related LVO, which were identified from prospectively maintained multicenter database of RS after MT failure, to assess good outcome (mRS 0-2), mortality, stroke recurrence, symptomatic intracranial hemorrhage (SICH) and stent patency.

View Article and Find Full Text PDF

Aims: Although evaluation of left ventricular ejection fraction (LVEF) is crucial for deciding the rate control strategy in patients with atrial fibrillation (AF), real-time assessment of LVEF is limited in outpatient settings. We aimed to investigate the performance of artificial intelligence-based algorithms in predicting LV systolic dysfunction (LVSD) in patients with AF and rapid ventricular response (RVR).

Methods And Results: This study is an external validation of a pre-existing deep learning algorithm based on residual neural network architecture.

View Article and Find Full Text PDF

Proteins work together in nanostructures in many physiological contexts and disease states. We recently developed expansion revealing (ExR), which expands proteins away from each other, in order to support better labeling with antibody tags and nanoscale imaging on conventional microscopes. Here, we report multiplexed expansion revealing (multiExR), which enables high-fidelity antibody visualization of >20 proteins in the same specimen, over serial rounds of staining and imaging.

View Article and Find Full Text PDF
Article Synopsis
  • - The immune system relies on both innate and adaptive responses to fight pathogens, and individuals with weakened immune systems require effective methods to enhance their immune function.
  • - This study investigates the effects of the probiotic OTG1204 on macrophages, crucial for immune defense, specifically examining its potential to stimulate the immune response in conditions of immunosuppression induced by cyclophosphamide (CTX).
  • - Results showed that OTG1204 activated macrophages, increasing important signaling molecules and cytokines through specific pathways, and helped restore immune function in immunosuppressed mice by improving immune cell populations and overall health indicators.
View Article and Find Full Text PDF

Early-onset breast cancer is known for its aggressive clinical characteristics and high prevalence in East Asian countries, but a comprehensive understanding of its molecular features is still lacking. In this study, we conducted a proteogenomic analysis of 126 treatment-naïve primary tumor tissues obtained from Korean patients with young breast cancer (YBC) aged ≤40 years. By integrating genomic, transcriptomic, and proteomic data, we identified five distinct functional subgroups that accurately represented the clinical characteristics and biological behaviors of patients with YBC.

View Article and Find Full Text PDF

Background Sublobar resection for lung cancer is usually guided by cutoff values for consolidation size (maximal diameter of the solid tumor component) and consolidation-to-tumor ratio (CTR). The effects of these factors as continuous variables and the reason for established cutoffs are, to the knowledge of the authors, unexplored. Purpose To quantitatively assess the predictive value of CTR and consolidation size for cancer recurrence risk after sublobar resection in clinical stage IA lung adenocarcinoma.

View Article and Find Full Text PDF

Background And Purpose: To train and validate a deep learning (DL)-based segmentation model for cerebral microbleeds (CMB) on susceptibility-weighted MRI; and to find associations between CMB, cognitive impairment, and vascular risk factors.

Materials And Methods: Participants in this single-institution retrospective study underwent brain MRI to evaluate cognitive impairment between January-September 2023. For training the DL model, the nnU-Net framework was used without modifications.

View Article and Find Full Text PDF
Article Synopsis
  • Coronary computed tomography angiography (CCTA) is used to evaluate cardiovascular risk by quantifying coronary plaque, and deep learning technology helps automate this process.
  • A study involving 2803 patients analyzed how age and sex affect coronary plaque volume and its relation to the risk of myocardial infarction, showing that plaque volume increases with age and is typically higher in men.
  • Patients with coronary plaque in the ≥75th percentile were found to have a significantly higher risk of myocardial infarction compared to those below the 50th percentile, suggesting that deep learning-based plaque measurements can effectively predict cardiac events.
View Article and Find Full Text PDF

Background: Current guidelines recommend intervention for asymptomatic rheumatic mitral stenosis (MS) with mitral valve area ≤1.5 cm based on indicators including pulmonary arterial systolic pressure (PASP) >50 mm Hg and new-onset atrial fibrillation; however, evidence supporting this is lacking.

Methods: This single-center retrospective study included patients with rheumatic MS between 2006 and 2022.

View Article and Find Full Text PDF

Background: Chronic mental stress accelerates atherosclerosis through complicated neuroimmune pathways, needing for advanced imaging techniques to delineate underlying cellular mechanisms. While histopathology, ex vivo imaging, and snapshots of in vivo images offer promising evidence, they lack the ability to capture real-time visualization of blood cell dynamics within pulsatile arteries in longitudinal studies.

Methods: An electrically tunable lens was implemented in intravital optical microscopy, synchronizing the focal plane with heartbeats to follow artery movements.

View Article and Find Full Text PDF

T cell surface CTLA4 sequesters the costimulatory ligands CD80 and CD86 on antigen-presenting cells (APCs) to prevent autoimmunity. Therapeutic immunosuppression by recombinant CTLA4-immunoglobulin (Ig) fusion proteins, including abatacept, is also attributed to CD80/CD86 blockade. Recent studies show that CTLA4-Ig binding to APC surface cis-CD80:PD-L1 complexes can release the inhibitory ligand PD-L1, but whether this contributes to T cell inhibition remains unclear.

View Article and Find Full Text PDF

The mammalian reovirus Type 3 Dearing (T3D) is a naturally occurring oncolytic virus. We previously identified a T3D variant isolated from persistently infected cancer cells that has a premature stop codon mutation in the gene, generating a truncated σ1-attachment protein that lacks the globular head. We now report on the molecular characterization of this variant, named RP116, and assess its antitumor potential in human cancer cells and syngeneic mouse models.

View Article and Find Full Text PDF

The burgeoning field of bioinformatics has seen a surge in computational tools tailored for omics data analysis driven by the heterogeneous and high-dimensional nature of omics data. In biomedical and plant science research multi-omics data has become pivotal for predictive analytics in the era of big data necessitating sophisticated computational methodologies. This review explores a diverse array of computational approaches which play crucial role in processing, normalizing, integrating, and analyzing omics data.

View Article and Find Full Text PDF