Publications by authors named "Junhee Han"

Foot-and-mouth disease virus (FMDV) serotype Asia 1 has not been reported in Southeast Asia, China and Mongolia between 2018 and 2024, despite the endemicity of FMD in this region and the continued circulation of serotype Asia 1 in South Asia. While vaccines against Asia 1 are still occasionally used in this region, it is unknown whether the absence of reports indicates true disease freedom or surveillance gaps. This study aimed to estimate the sensitivity of existing passive surveillance systems, and the probability of regional freedom from serotype Asia 1 across eight countries using the scenario tree approach.

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Background: Nutrition in the subacute phase of stroke may be a critical factor in functional recovery and post-stroke mortality. Nevertheless, the issue of intensive nutritional support for people with subacute stroke remains insufficiently explored.

Objectives: This study investigated the effects of intensive nutritional support during rehabilitation on functional recovery in the subacute phase of participants with a first-ever stroke.

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Importance: Longitudinal changes in functional levels can provide valuable information about disability. However, longitudinal outcomes in aneurysmal subarachnoid hemorrhage (aSAH) have not been well reported, which could provide insight into appropriate management and information for patients experiencing disability.

Objective: To investigate the 5-year prognosis and functional outcomes of patients with aSAH.

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Background: There are relatively few reports on the long-term sequential functional recovery and prognosis in patients with cerebellar infarction. The aim of this study was to investigate the long-term recovery of multifaceted functional outcomes up to 36 months after onset and the functional prognosis of isolated cerebellar infarction.

Methods: This study was a retrospective analysis of the Korean Stroke Cohort for Functioning and Rehabilitation (KOSCO) data up to 36 months after onset.

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Post-stroke dysphagia is a common and debilitating complication affecting millions of people worldwide, often leading to malnutrition, pneumonia, and reduced quality of life. This study, an interim analysis of the Korean Study Cohort for Functional and Rehabilitation, aimed to identify long-term changes and predictive factors associated with post-stroke dysphagia at 3 years after stroke. A total of 4735 patients with acute first-ever stroke, including both ischemic and hemorrhagic subgroups, were followed, and dysphagia was assessed using the ASHA-NOMS scale.

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Background And Objectives: Aneurysmal subarachnoid hemorrhage (aSAH) remains a significant global health concern, and therefore, understanding their functional outcomes is essential. The aim of this study was to investigate the 1-year functional outcomes of patients with aSAH.

Methods: We retrospectively analyzed data of patients with aSAH from the Korean Stroke Cohort for Functioning and Rehabilitation study, up to 1 year post-onset.

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Background And Purpose: Nutritional status can influence the outcomes and mortality of various diseases. The association between initial nutritional status and ischemic stroke outcomes, however, remains poorly understood. This study investigated whether the Controlling Nutritional Status (CONUT) score at admission could predict functional recovery, complications, and survival following an ischemic stroke.

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Article Synopsis
  • The delivery of mRNA into the lungs could potentially help treat infectious and difficult diseases, with inhalation via nebulizers being the most promising method.
  • Conventional lipid nanoparticles, while effective for other delivery methods, struggle with stability and adaptation for pulmonary use, prompting the need for better alternatives.
  • Researchers developed a novel ionizable liposome-mRNA lipocomplex (iLPX) that demonstrates increased stability and efficiency in delivering mRNA to lung cells, showing promising results in transfection without toxicity.
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Many physical factors influence post-stroke functional outcomes. However, few studies have examined the influence of height on these outcomes. Here, data from the Korean Stroke Cohort for Functioning and Rehabilitation were used and patients' height was categorized into three groups: short (lower 25%), middle (middle 50%), and tall (upper 25%).

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Background: With the advancement of artificial intelligence technology and radiomics analysis, opportunistic prediction of osteoporosis with computed tomography (CT) is a new paradigm in osteoporosis screening. This study aimed to assess the diagnostic performance of osteoporosis prediction by the combination of autosegmentation of the proximal femur and machine learning analysis with a reference standard of dual-energy X-ray absorptiometry (DXA).

Methods: Abdomen-pelvic CT scans were retrospectively analyzed from 1,122 patients who received both DXA and abdomen-pelvic computed tomography (APCT) scan from January 2018 to December 2020.

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The flexion synergy and extension synergy are a representative consequence of a stroke and appear in the upper extremity and the lower extremity. Since the ipsilesional corticospinal tract (CST) is the most influential neural pathway for both extremities in motor execution, damage by a stroke to this tract could lead to similar motor pathological features (e.g.

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Stroke-caused synergies may result from the preferential use of the reticulospinal tract (RST) due to damage to the corticospinal tract. The RST branches multiple motoneuron pools across the arm together resulting in gross motor control or abnormal synergies, and accordingly, the controllability of individual muscles decreases. However, it is not clear whether muscles involuntarily activated by abnormal synergy vary depending on the muscles voluntarily activated when motor commands descend through the RST.

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Long-term changes in caregiver burden should be clarified considering that extended post-stroke disability can increase caregiver stress. We assessed long-term changes in caregiver burden severity and its predictors. This study was a retrospective analysis of the Korean Stroke Cohort for Functioning and Rehabilitation.

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Introduction: The chronic obstructive pulmonary disease (COPD) Assessment Test (CAT) score is widely used for evaluating the health status of patients diagnosed with COPD. The aim of this study was to identify which components of the CAT are associated with exacerbations in severe COPD patients.

Methods: Using data from the Korean COPD Subgroup Study (KOCOSS), we identified 3,440 COPD patients, among which 1,027 patients are classified as having severe COPD based on spirometry results.

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The interferon-λ (IFN-λ)-regulated innate immune responses in the airway expand our understanding toward antiviral strategies against influenza A virus (IAV). The application of IFN-λ as mucosal antiviral therapeutic is still challenging, and advanced research will be necessary to achieve more efficient delivery of recombinant IFN-λs to the damaged respiratory mucosa. In this study, we examine the capability of IFN-λ to stimulate the innate immune response, promoting the swift elimination of IAV in the lungs.

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Objective: The flexion synergy and extension synergy are a representative consequence of a stroke and appear in the upper extremity and lower extremity. Since the ipsilesional corticospinal tract (CST) is the most influential neural pathway for both extremities in motor execution, damage by a stroke to this tract could lead to similar motor pathological features (e.g.

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Background: Information on the long-term prognosis in patients with isolated thalamic stroke is sparse. We report the functional outcomes of patients with thalamic stroke up to 24 months from the KOSCO (Korean Stroke Cohort for Functioning and Rehabilitation) study.

Methods And Results: Isolated thalamic stroke was defined as the presence of lesions solely in the thalamus, excluding cases with lesions in other brain parenchyma areas apart from the thalamus, as identified by brain magnetic resonance imaging or computed tomography scans.

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Article Synopsis
  • Analyzing membrane proteins in extracellular vesicles (EVs) is becoming crucial for cancer diagnosis, particularly for identifying mutations in the epidermal growth factor receptor (EGFR) related to non-small cell lung cancer (NSCLC).
  • Traditional methods for protein analysis require large samples and complex procedures, but a new nanoplasmonic detection technique shows promise for detecting EGFR mutations using a model drug, gefitinib.
  • This method leverages surface-enhanced Raman spectroscopy (SERS) to detect higher signals from gefitinib in EVs with EGFR exon 19 deletions in NSCLC patients, suggesting potential for improved liquid biopsy diagnostics.
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Background And Purpose: Oxygen treatment is the first-line acute treatment for cluster headaches (CHs), but this can be impeded by insurance coverage and oxygen-tank maintenance. Oxygen concentrators filter nitrogen from ambient air to produce oxygen-rich gas, and can therefore be an alternative to conventional oxygen therapy using a tank. We investigated the effectiveness and safety of using two home oxygen concentrators and compared them with using oral zolmitriptan for the acute treatment of CHs.

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Objective: This study aimed to demonstrate the incidence of altered level of consciousness after hemorrhagic stroke and identify factors associated with altered level of consciousness at 3 mos after stroke.

Design: This study used data from a prospective multicenter cohort study conducted in nine hospitals in Korea and included 1677 patients with first-ever hemorrhagic stroke. Patients were dichotomized into those with and without altered level of consciousness at 3 mos after stroke.

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The global adaptation of mRNA vaccines to protect against the COVID-19 pandemic was a major interdisciplinary milestone, demonstrating the potential of combining mRNA applications with nanotechnology. This innovative strategy holds great promise as an improved therapeutic modality for cancer immunotherapy, as further development could facilitate targeted mRNA delivery to specific immune cells and enable manipulation of effector functions. Toward this, researchers have made substantial efforts to modulate various immune cell types, including lymphoid organ dendritic cells for cancer vaccines, peripheral blood lymphocytes for in situ T-cell therapy, and macrophages in the tumor microenvironment to restore antitumor functions.

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In December 2014, a novel foot and mouth disease (FMD) virus was introduced to a pig farm in South Korea, despite the animals being vaccinated. A marginal antigenic matching between the novel and vaccine strains potentially led to the infection of the vaccinated animals. To understand the impact of using an FMD vaccine on the transmission dynamics of an unmatched field strain, simulation models were employed using daily reported data on clinical cases from the farm.

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Objectives: This study aimed to analyze the factors affecting the long-term quality of life of patients with mild stroke and evaluate the differences according to age and sex.

Materials And Methods: The Korean Stroke Cohort for functioning and rehabilitation data was used, and patients with mild stroke with a National Institute of Health Stroke Scale score of < 5 were included. Quality of life after 6 months was analyzed using EuroQol-5 dimensions.

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Introduction: We aimed to evaluate the relationships between hepatic steatosis and various indices of obesity, and to identify the most useful index for the prediction of hepatic steatosis in children and adolescents with obesity.

Methods: A total of 226 children and adolescents with a mean body mass index (BMI) z-score of 2.65 and a mean age of 11.

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