Publications by authors named "Muyoung Kim"

Article Synopsis
  • The study investigates how different medications (heparin, aspirin, SNP) affect the risk of pulmonary thromboembolism (PTE) after injecting adipose tissue-derived mesenchymal stem cells (AdMSCs) in dogs.
  • This research involved administering fluorescently labeled AdMSCs to mice and comparing outcomes like survival rates and other health indicators across groups receiving the drugs and a control group.
  • Results showed that heparin significantly reduced PTE-related deaths compared to aspirin and SNP, suggesting its effectiveness in improving the safety of stem cell therapies in veterinary practice.
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Transition metal dichalcogenides (TMDs) have received considerable attention as promising electrocatalysts for the hydrogen evolution reaction (HER), yet their potential is often constrained by the inertness of the basal planes arising from their poor hydrogen adsorption ability. Here, the relationship between the electronic structure of the WS basal plane and HER activity is systemically analyzed to establish a clear insight. The valance state of the sulfur atoms on the basal plane has been tuned to enhance hydrogen adsorption through sequential engineering processes, including direct phase transition and heterostructure that induces work function-difference-induced unidirectional electron transfer.

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Importance: The intravenous administration of adipose tissue-derived mesenchymal stem cells (AdMSCs) in veterinary medicine is an attractive treatment option. On the other hand, it can result in severe complications, including pulmonary thromboembolism (PTE).

Objective: The present study assessed the occurrence of PTE after the intravenous infusion of canine AdMSCs (cAdMSCs) into experimental animals.

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Bone loss from the kerf of the sawblade may influence the final outcomes when employing three-dimensional-printed surgical guides. However, no studies have systematically addressed saw blade-induced bone loss. This study aims to quantify bone loss and propose a reduction guide to minimize the fracture gap.

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This retrospective case series describes the signalments, clinical signs, diagnostic test results, and postoperative complications obtained from the medical records of 10 client-owned dogs that underwent treatment for grade IV tracheal collapse using double-wire woven nitinol stents between October 2017 and September 2021. Respiratory signs resolved in all dogs immediately after tracheal stent placement. Mild to moderate stent fractures were identified in five dogs, of which two showed concurrent respiratory distress necessitating re-stenting after several months.

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Introduction: The present study was designed to evaluate the safety of substances generally used in the preparation of lyophilized platelet products (LPPs) because the possibility of an immune response to bovine serum albumin (BSA) was considered high when using previously described technology.

Methods: An intradermal skin test, followed by a drug provocation test, was conducted to observe adverse events and identify the substances responsible for an immune response. Five male beagles (2 years old) weighing 12-14 kg were used.

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Background: The need for a storage method capable of preserving the intrinsic properties of bones without using toxic substances has always been raised. Supercooling is a relatively recently introduced preservation method that meets this need. Supercooling refers to the phenomenon of liquid in which the temperature drops below its freezing point without solidifying or crystallizing.

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To address the challenges in real-time process diagnosis within the semiconductor manufacturing industry, this paper presents a novel machine learning approach for analyzing the time-varying 10th harmonics during the deposition of low-k oxide (SiOF) on a 600 Å undoped silicate glass thin liner using a high-density plasma chemical vapor deposition system. The 10th harmonics, which are high-frequency components 10 times the fundamental frequency, are generated in the plasma sheath because of their nonlinear nature. An artificial neural network with a three-hidden-layer architecture was applied and optimized using k-fold cross-validation to analyze the harmonics generated in the plasma sheath during the deposition process.

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The transfusion of stored platelets has emerged as an efficient method for treating dogs with thrombocytopenia. However, the availability of fresh platelets is limited in veterinary medicine due to demanding storage conditions. Lyophilized platelets have long shelf lives and can be easily stored, increasing their accessibility for thrombocytopenic dogs.

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A 4-year-old mixed breed dog and a 19-year-old English cocker spaniel dog were evaluated for fecal incontinence. The second dog's fecal incontinence was associated with the anal mass. In both dogs, reconstruction of the external anal sphincter was required to gain fecal continence.

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Silk protein is being increasingly introduced as a prospective material for biomedical devices. However, a limited locus to intervene in nature-oriented silk protein makes it challenging to implement on-demand functions to silk. Here, we report how polymorphic transitions are related with molecular structures of artificially synthesized silk protein and design principles to construct a green-lithographic and high-performative protein resist.

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Article Synopsis
  • A ureterocele is a rare condition where the last part of the ureter swells inside the bladder, either in a normal position or an abnormal one, and its cause is not fully understood.
  • Urothelial carcinoma is common in dogs' urinary tracts, with most cases being invasive, but a non-invasive type exists that stays within the ureteral mucosa without spreading.
  • A 7-year-old Maltese dog with symptoms like lethargy and frequent urination was found to have an orthotopic ureterocele and hydronephrosis, leading to surgery where a non-invasive cancer was discovered, but the dog recovered well with no complications afterward.
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A 10-year-old intact female Rottweiler dog weighing 29 kg presented with 2 days history of vomiting, anorexia, and lethargy to KonKuk University Teaching Hospital, Seoul, South Korea. Ultrasonography and computed tomography (CT) scannings revealed a well-demarcated, large mass (29 × 19 × 11 cm) with numerous fluid-filled cavities. Metastases to adjacent lymph nodes were also identified on CT.

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Article Synopsis
  • A study was conducted on 180 nose images from 60 dogs of various ages, genders, and breeds to examine the uniqueness of canine nose patterns.
  • Both visual inspection and biometric algorithms were used to analyze the images, confirming that each dog's nose pattern is unique and remains consistent over time.
  • This conclusion was further supported by a larger dataset of 278 images from 70 dogs, reinforcing earlier claims that dog nose patterns can serve as effective biometric markers.
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Background: The safety and efficacy of preserving transplantable tissue depends on multiple factors including temperature, length of preservation, and types of solvent. Supercooling storage, in which the preservation temperature goes below the freezing point without actual freezing of the tissue, has the potential to substantially extend the preservation time of cells, tissues, and organs. Herein we studied the effect of supercooling storage on preserving the viability of transplantable biomaterials.

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Diarylethene is one of the photo-responsive materials that show rapid and reversible changes in their color/electrochemical properties and macroscopic deformations in the crystalline phase by light irradiation. Photoisomerization is the main cause of the photo reactivity of diarylethene, and we established a statistical model based on the density matrix formalism, which predicts quantitative isomerization progress as a population term. The model reflects photo-switching properties of the target molecule, which were characterized by first principle calculations, and external stimulus factors (light irradiation conditions and temperature).

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