Publications by authors named "Yun Lee"

Purpose: Stage III colorectal cancer (CRC) is typically treated with surgery; however, it has a high recurrence rate and inconsistent benefits from postoperative chemotherapy. Inflammatory markers like the neutrophil-to-lymphocyte ratio (NLR) have shown prognostic value in various cancers. However, the prognostic significance of NLR measured before and after CRC surgery is not clear.

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and are among the most problematic broadleaf weeds in eastern cropping systems of Australia. This study investigated the seed germination ecology of and . The study hypothesized that may have greater ecological advantages under adverse environmental conditions compared to .

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Objective: To evaluate the audiologic outcomes after cochlear implantation (CI) in prelingually deaf children with comorbid disorders.

Study Design: Retrospective study.

Setting: Tertiary care academic center.

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Pancreatic ductal adenocarcinoma (PDAC) exhibits an altered metabolic profile compared to normal pancreatic tissue. However, studies on actual pancreatic tissues are limited. Untargeted metabolomics analysis was conducted on 54 pairs of tumor and matched normal tissues.

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  • * An analysis of 302 pregnant women revealed that non-secretors with certain types of bacterial diversity had shorter gestational periods, particularly in those with depleted bacterial types early in pregnancy.
  • * The findings suggest that secretor status and the expression of blood-group antigens play a crucial role in the interaction between vaginal microbiota and pregnancy outcomes, especially regarding preterm birth risks.
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  • * An 86-year-old man underwent the implant surgery for glaucoma and experienced partial vitreous occlusion one month later, resulting in elevated eye pressure.
  • * Despite ongoing blockage, his eye pressure was successfully managed with topical antiglaucoma medications over six months, underscoring the importance of monitoring complications when surgical correction isn't possible.
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This review explores the potential impact of microplastic-derived dissolved organic matter (MP-DOM) on biogeochemical processes associated with global carbon and nitrogen cycles, with consideration given to the possible influence of irregular climate changes. We synthesize literature on MP-DOM leaching behaviors during various natural aging processes, such as heavy rainfall, heat waves, and UV irradiation, which may be intensified by climate change. MP-DOM release varies with plastic type and conditions, with organic additives significantly influencing leaching under UV exposure.

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Objectives: We investigated the prevalence of anti-thyroid autoantibodies and thyroid dysfunction, and their association with clinical and laboratory features in Korean patients with primary Sjögren's syndrome (pSS) without overt thyroid illnesses.

Methods: We consequently included 196 pSS patients (190 women) and cross-sectionally collected clinical and laboratory data including the EULAR Sjögren's Syndrome Disease Activity Index (ESSDAI) and Patient Reported Index (ESSPRI). The fatigue-dominant group was defined as those in the highest quartile of the fraction of fatigue, calculated as the ESSPRI fatigue score divided by the total ESSPRI score.

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Background/objectives: Diesel Particulate Matter (DPM) is a very small particulate matter originating from cities, factories, and the use of fossil fuels in diesel vehicles. When DPM permeates the skin, it causes inflammation, leading to severe atopic dermatitis. L.

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Pancreatic ductal adenocarcinoma (PDAC) is a lethal malignancy with limited therapeutic options. Cisplatin is a primary chemotherapeutic agent utilized in combination with other drugs or radiotherapy for PDAC treatment. However, the severe side effects of cisplatin often necessitate discontinuation of therapy and drug resistance in tumor cells poses significant clinical challenges.

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Camelina (), an allohexaploid species, is an emerging aviation biofuel crop that has been the focus of resurgent interest in recent decades. To guide future breeding and crop improvement efforts, the community requires a deeper comprehension of subgenome dominance, often noted in allopolyploid species, "alongside an understanding of the genetic diversity" and population structure of material present within breeding programs. We conducted population genetic analyses of a diversity panel, leveraging a new genome, to estimate nucleotide diversity and population structure, and analyzed for patterns of subgenome expression dominance among different organs.

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Cochlear implant (CI) users face the decision of whether to upgrade to a new sound processor (SP) with technological advances. We wanted to assess the changes of speech perception ability and aided hearing thresholds as well as subjective satisfaction after upgrade to a new SP. Fifty-five patients who have used CI for 10 years or more and upgraded to a new SP were enrolled.

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  • - Patients with a history of gamma knife surgery for vestibular schwannoma can develop rare ruptured pseudoaneurysms in the distal anterior inferior cerebellar artery (AICA), and treatment usually involves either surgical trapping or endovascular occlusion.
  • - This study highlights the first use of endosaccular coil embolization to treat a ruptured pseudoaneurysm in AICA while preserving the artery, with the patient experiencing recanalization that required additional treatments over two years.
  • - The findings suggest that endosaccular coil embolization can be a safe approach for managing radiation-induced pseudoaneurysms, but ongoing monitoring and readiness for further interventions are essential due to the risk of regrowth. *
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Purpose: Few data on the clinical course after levothyroxine (L-T4) discontinuation in pediatric patients with Hashimoto thyroiditis (HT) are available. We investigated outcomes and predictors for successful withdrawal from L-T4 among children with HT.

Methods: Among 168 patients diagnosed with HT between January 2000 and March 2021 at Seoul National University Children's Hospital and in whom L-T4 therapy was initiated during childhood, we attempted to discontinue this therapy in 47, 3 boys and 44 girls.

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Objective: Expanded potential stem cells (EPSCs) are stem cells that can differentiate into embryonic and extraembryonic lineages, including extraembryonic endoderm and trophoblast lineages. Therefore, EPSCs have great potential in advancing regenerative medicine, elucidating disease mechanisms, and exploring early embryonic development. However, the generation and characterization of EPSCs in pigs have not been thoroughly explored.

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  • A cross-sectional study in South Korea examined how having multiple chronic diseases (multimorbidity) affects the likelihood of experiencing sarcopenia, a condition characterized by loss of muscle mass, in older adults.
  • The study included 876 participants and found that sarcopenia was more prevalent in those with multimorbidity (43.5%) compared to those without (20.8%).
  • The research identified that poor perceived health was a strong predictor of sarcopenia among those with multimorbidity, while advancing age was a key predictor in those without multimorbidity, highlighting the need for further studies using objective measures.
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Glioblastoma (GBM) has a fatal prognosis because of its aggressive and invasive characteristics. Understanding the mechanism of invasion necessitates an elucidation of the relationship between tumor cells and the tumor microenvironment. However, there has been a scarcity of suitable models to investigate this.

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Background/aims: Combi-elastography is a B-mode ultrasound-based method in which two elastography modalities are utilized simultaneously to assess metabolic dysfunction-associated steatotic liver disease (MASLD). However, the performance of combi-elastography for diagnosing metabolic dysfunction-associated steatohepatitis (MASH) and determining fibrosis severity is unclear. This study compared the diagnostic performances of combi-elastography and vibration-controlled transient elastography (VCTE) for identifying hepatic steatosis, fibrosis, and high-risk MASH.

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  • - The study analyzed how poor prognostic factors (PPFs), such as functional limitations and bone erosions, impact remission rates and the need for advanced therapies (b/tsDMARDs) in a large group of Korean patients with rheumatoid arthritis (RA).
  • - Patients were divided into three groups based on the number of PPFs they had, with Group H (≥3 PPFs) showing more severe disease and poorer health outcomes compared to Groups L (0-1 PPFs) and M (2 PPFs).
  • - The findings indicate that patients in Group H found it much harder to achieve remission over five years and were more likely to require b/tsDMARD treatment, suggesting that higher P
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  • The National Health Insurance Service in Korea expanded the diagnosis-related group system for appendectomies to all medical institutions starting July 2013, prompting an analysis of pediatric appendectomy claim data from 2011 to 2015.
  • A total of 112,143 claims were analyzed, revealing that the majority of patients were boys, with a median hospital stay of 5 days and a significant increase in reimbursement amounts for each claim over the years.
  • The study found a decline in the total number of appendectomy claims, but an increase in claims for complicated cases and overall medical costs, linked to the new reimbursement system.
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This study aimed to identify radiologic features that differentiate lymphoma from metastasis manifesting as a solid enhancing mass lacking necrosis in the cerebellum. Pathologically confirmed 24 primary central nervous system lymphoma (PCNSL) and 32 metastasis patients with solid enhancing cerebellar masses without necrotic or hemorrhagic components were retrospectively analyzed. We evaluated the imaging characteristics using contrast-enhanced magnetic resonance imaging (MRI).

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  • A study examined how early life exposure to fine particulate matter (PM) and nitrogen dioxide (NO) affects thyroid function in children, focusing on their levels of thyrotropin, triiodothyronine, and free thyroxine.
  • Results indicated that increases in PM exposure during the first trimester were linked to lower thyrotropin levels in children at ages 4 and 6.
  • Conversely, childhood PM exposure was positively associated with higher thyrotropin levels at ages 4 and 6 and negatively related to free thyroxine levels at age 8, suggesting the importance of timing in understanding these effects.
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  • Extremely well-differentiated gastric-type adenocarcinoma (EWDGA) is a rare gastric cancer that often mimics normal stomach tissue, which can lead to misdiagnosis.
  • In a study involving 11 pathologists evaluating six preoperative biopsies, the diagnosis of malignancy was only confirmed in 15.2% of cases, highlighting significant diagnostic challenges.
  • Despite minimal atypia in biopsy samples and no overexpression of the p53 protein, genomic profiling revealed mutations associated with more aggressive cancer, emphasizing the need for better recognition and diagnostic practices for EWDGA.
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Objectives: To enable interactive visualization of the vaginal microbiome across the pregnancy and facilitate discovery of novel insights and generation of new hypotheses.

Material And Methods: Vaginal Microbiome Atlas during Pregnancy (VMAP) was created with R shiny to generate visualizations of structured vaginal microbiome data from multiple studies.

Results: VMAP (http://vmapapp.

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