Publications by authors named "Yeon S Lee"

Background: Sjögren's syndrome (SS) is an autoimmune disease caused by infiltrating lymphocytes. FTY720 affects the S1P signaling pathway, which plays a role in T and B cell migration from secondary lymphoid tissues to target organs. In this study, we investigate the regulatory mechanism of FTY720 in the context of SS.

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  • The study examines how COVID-19 affects the development and progression of Systemic Lupus Erythematosus (SLE) in three animal models.
  • It found that the SARS-CoV-2 spike protein led to increased levels of autoantibodies, albumin, and signs of inflammation and damage in various organs, particularly the spleen and lungs.
  • The results suggest that COVID-19 may worsen lupus by promoting autoantibody production, fibrosis, and thrombosis in affected mice.
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The size of T4 tumor could vary in oropharyngeal squamous cell carcinoma (OPSCC). Using the Surveillance, Epidemiology, and End Results (SEER) database, this study aimed to investigate the role of tumor size in the prognosis of patients with T4 OPSCC. Retrospective cross-sectional.

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Background: Cervicogenic headache is characterized by chronic posterior neck pain radiating to one side of the head, resulting from cervical spine bone or soft tissue diseases. Cervical ganglioneuroma (GN), a rare benign neuroblastic tumor, especially in the cervical spine, may cause cervicogenic headache-like symptoms.

Objective: We report a case of GN which was surgically removed successfully to relieve the symptom.

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Background: Gastrodia elata Blume (GEB), a traditional medicinal herb, has been reported to have pharmacological effect including protection against liver, neuron and kidney toxicity. However, explanation of its underlying mechanisms remains a great challenge. This study investigated the protective effects of GEB extract on vancomycin (VAN)-induced nephrotoxicity in rats and underlying mechanisms with emphasis on the anti-oxidative stress, anti-inflammation and anti-apoptosis.

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Introduction: Bicortical screw fixation, which penetrates and fixes the near and far cortex of bone, has been conventionally used to achieve compressive fixation for fracture using screws. Open reduction and internal fixation using the locking plate are widely used for treating proximal humerus fractures. However, minimal contact between the bone and the locking plate can lead to an insufficient reduction.

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Endogenous opioid peptides serve as potent analgesics through the opioid receptor (OR) activation. However, they often suffer from poor metabolic stability, low lipophilicity, and low blood-brain barrier permeability. Researchers have developed many strategies to overcome the drawbacks of current pain medications and unwanted biological effects produced by the interaction with opioid receptors.

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Drug delivery through complex skin is currently being studied using various innovative structural and material strategies due to the low delivery efficiency of the multilayered stratum corneum as a barrier function. Existing microneedle-based or electrical stimulation methods have made considerable advances, but they still have technical limitations to reduce skin discomfort and increase user convenience. This work introduces the design, operation mechanism, and performance of noninvasive transdermal patch with dual-layered suction chamber cluster (SCC) mimicking octopus-limb capable of wet adhesion with enhanced adhesion hysteresis and physical stimulation.

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Background: Coronavirus disease 2019 (COVID-19) induces a dysfunctional immune response, inflammation, autoantibody production, and coagulopathy, which are symptoms that bear resemblance to those of autoimmune diseases, including systemic sclerosis (SSc).

Methods: While there is a single case report suggesting an association between COVID-19 and SSc, the effects of COVID-19 on SSc are not yet fully understood. Human embryonic kidney 293 (HEK293) cells were transfected with the SARS-CoV-2 spike protein gene, in the presence of TGF-β.

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Cancer cachexia is a metabolic disease involving multiple organs, which is accompanied by the depletion of muscle tissue and is associated with ~20% of cancer‑related deaths. Muscle wasting is a critical factor in cancer cachexia. β‑carotene (BC) has been shown to increase muscle mass and hypertrophy in healthy mice.

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Acquired hypertrichosis can occur in local inflammation. Erythema nodosum (EN) is a hypersensitivity reaction to various underlying antigenic stimuli including , which causes inflammation in the septa of subcutaneous fat. There were several case reports that describe the association of localized hypertrichosis (LH) with traumatic panniculitis and lupus panniculitis.

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Rationale: Most soft-tissue lesions in the hand and wrist have a benign etiology, and malignant tumors, such as soft-tissue sarcomas, are rare. Mimickers of soft tissue tumors in the hand and wrist are more common than true neoplastic lesions; however, soft tissue pseudotumors that mimic malignancy are very rare.

Patient Concerns: This study describes 2 patients with soft tissue pseudotumors of the hand and wrist.

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Background: Sjögren's syndrome (SS) is an autoimmune disease characterized by inflammation of the exocrine gland. An imbalance of gut microbiota has been linked to SS. However, the molecular mechanism is unclear.

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Background: Coronavirus disease 2019 (COVID-19) induces inflammation, autoantibody production, and thrombosis, which are common symptoms of autoimmune diseases, including rheumatoid arthritis (RA). However, the effect of COVID-19 on autoimmune disease is not yet fully understood.

Methods: This study was performed to investigate the effects of COVID-19 on the development and progression of RA using a collagen-induced arthritis (CIA) animal model.

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Despite various advantages, opioid peptides have been limited in their therapeutic uses due to the main drawbacks in metabolic stability, blood-brain barrier permeability, and bioavailability. Therefore, extensive studies have focused on overcoming the problems and optimizing the therapeutic potential. Currently, numerous peptide-based drugs are being marketed thanks to new synthetic strategies for optimizing metabolism and alternative routes of administration.

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  • The study focused on the long-term outcomes of the Harris-Galante (HG) cementless total hip arthroplasty (THA) in patients under 50 years, with a minimum follow-up of 10 years involving 61 surgeries.
  • Results showed a significant improvement in clinical scores, with the Harris Hip Score rising from 46.5 pre-surgery to 81.8 post-surgery, but 56% of hips required revision due to various complications.
  • The estimated survivorship rates at 34 years were 90.9% for acetabular component revisions and 80.5% for femoral components, indicating generally satisfactory long-term results, despite bearing-related issues leading to many revisions.
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  • The study investigated the impact of 7-day exposure to multifunctional enkephalin analogs on protein composition in rat spleen lymphocytes, brain cortex, and hippocampus at doses of 3 mg/kg and 10 mg/kg.
  • Proteomic analysis revealed significant changes in protein expression in these areas, particularly with the 3 mg/kg dose showing effects on RNA processing and cytoskeletal dynamics.
  • The 10 mg/kg dose caused extensive modifications in spleen lymphocytes, increasing proteins related to immune responses and apoptosis, while also altering protein expression in the brain regions related to transcription regulation and neuronal plasticity.
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The risk of tuberculosis (TB) increases in immunocompromised patients. Multiple myeloma is considered a risk factor for TB and myeloma patients with TB have a higher mortality rate than those without TB. Herein, we report a case of concomitant TB of the iliotibial band mimicking a soft tissue tumor and tuberculous trochanteric bursitis in a patient with multiple myeloma.

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Melasma is a common pigmentary disorder with a complex pathogenesis, of which the treatment is challenging. Conventional treatment often leads to inconsistent results with unexpected pigmentary side effects and high recurrence rates. Recently, the low-fluence Q-switched Nd:YAG laser (LFQSNY) has been widely used for treating melasma, especially in Asia.

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Insulin signaling in blood vessels primarily functions to stimulate angiogenesis and maintain vascular homeostasis through the canonical PI3K and MAPK signaling pathways. However, angiogenesis is a complex process coordinated by multiple other signaling events. Here, we report a distinct crosstalk between the insulin receptor and endoglin/activin receptor-like kinase 1 (ALK1), an endothelial cell-specific TGF-β receptor complex essential for angiogenesis.

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  • Osteoarthritis (OA) is a joint disease caused by the breakdown of cartilage, with mitochondrial dysfunction in chondrocytes being a key risk factor for its progression.
  • Researchers studied the effects of mitochondrial transplantation by injecting healthy mitochondria into the knee joints of rats with OA, finding improvements in pain, cartilage damage, and bone loss.
  • The transplantation also increased mitochondrial function in chondrocytes from both rats and OA patients, reduced inflammation, and suggests a promising therapy for combating OA related to mitochondrial issues.
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Background: Spinal nerve root anomaly is a rare feature that can result in unexpected outcomes in epidural steroid injections or surgical procedures. Preoperative diagnostic tools for root anomalies are limited, as they are usually found intraoperatively.

Objective: This case report aims to propose an effective diagnostic process for nerve root anomalies by introducing clinical manifestations, electrodiagnostic findings, and sophisticated imaging techniques such as coronal view magnetic resonance imaging (MRI) of the lumbosacral spine.

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