Publications by authors named "HaYoung Kim"

Objective: To assess craniofacial and upper airway growth in infants with Robin sequence (RS) during the 1 year of life when their severe upper airway obstruction was treated non-surgically with the Stanford orthodontic airway plate treatment program (SOAP).

Design: Retrospective longitudinal cohort study comparing SOAP-treated infants with RS (treatment group) with age-matched healthy controls (HC) using computed tomography (CT).

Setting: Single tertiary referral hospital.

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Cervical cancer, which is mainly caused by oncogenic human papillomavirus subtypes, remains a significant global health challenge. Recent studies have indicated a connection between cervical cancer and the uterine microbiome, underscoring its importance. This study explored the potential of liquid-based cytology (LBC) samples, which are typically used for cytological analysis, in investigating the cervical microbiome.

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Article Synopsis
  • Staphylococcus hyicus is a bacterium that leads to skin disease in piglets, producing harmful toxins responsible for symptoms of exudative epidermitis, and antimicrobial treatment often fails due to resistance issues.
  • A study examined 17 isolates of S. hyicus from piglets, confirming their identity and analyzing the presence of specific exfoliative toxin genes, with 52.9% of isolates showing these genes, primarily exhB, exhC, and exhD.
  • Results indicated that while all isolates were highly susceptible to certain antibiotics, 82.4% displayed multidrug resistance, highlighting the need for better management and treatment approaches for the skin disease in pigs.
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Background: Pwani Regional Secretariat in Tanzania implemented the Maternal, Neonatal, and Child Health Project (2016-2022) through Direct Health Facility Financing (DHFF), which allocates funds directly to health facilities. This study assessed the impact of the six-year DHFF project in Pwani region.

Methods: The study utilised District Health Information Software 2 data from 18 intervention health facilities in Pwani region.

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Unlabelled: Methicillin-resistant (MRSA) is a drug-resistant pathogen causing subclinical and clinical bovine mastitis. This study examined the molecular properties, biofilm formation, virulence genes, and antimicrobial susceptibility of MRSA isolates from mastitis-infected dairy cow milk in South Korea. Whole-genome sequencing of an ST22-SCC IV MRSA strain positive for Panton-Valentine leukocidin (PVL) and toxic shock syndrome toxin-1 (TSST-1) was also performed.

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Staphylococcus spp. are one of the most predominant isolates in milk samples of dairy cows with mastitis worldwide. The aims of this study were to investigate the prevalence of bacterial pathogens in bovine mastitis milk samples in South Korea and the antimicrobial resistance profiles of staphylococcal isolates.

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Irritable bowel syndrome is a chronic disorder affecting the gastrointestinal tract, negatively impacting patients' quality of life. Here, we aimed to evaluate the effects of Lacticaseibacillus rhamnosus IDCC 3201 (RH 3201) on irritable bowel syndrome with constipation (IBS-C). In this randomised, double-blind, placebo-controlled trial, a total of 30 subjects with IBS-C were randomly assigned (1:1) to receive 8 weeks of probiotics administration or placebo.

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Importance: Osteoporosis-related fractures are associated with increased mortality risk among postmenopausal women, yet the impact of antiosteoporotic medications on mortality is not fully understood.

Objective: This study evaluates the effect of antiresorptive agents (ARs) on mortality risk in postmenopausal women with osteoporosis.

Design: This is a nationwide cohort study using data from the National Screening Program for Transitional Ages (2008-2017).

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Aim Of The Study: We evaluated whether an artificial intelligence (AI)-driven robot cardiopulmonary resuscitation (CPR) could improve hemodynamic parameters and clinical outcomes.

Methods: We developed an AI-driven CPR robot which utilizes an integrated feedback system with an AI model predicting carotid blood flow (CBF). Twelve pigs were assigned to the AI robot group (n = 6) and the LUCAS 3 group (n = 6).

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During recovery from septic shock, circulating mitochondrial N-formyl peptides predispose to secondary infection by occupying formyl peptide receptor 1 on the neutrophil (polymorphonuclear leukocyte) membrane, suppressing cytosolic calcium ([Ca2+]i)-dependent responses to secondarily encountered bacteria. However, no study has yet investigated therapeutic clearance of circulating mitochondrial N-formyl peptides in clinical settings. Thus, we studied how to remove mitochondrial N-formyl peptides from septic-shock plasma and whether such removal could preserve cell-surface formyl peptide receptor 1 and restore sepsis-induced polymorphonuclear leukocyte dysfunction by normalizing [Ca2+]i flux.

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Background: High-resolution manometry (HRM) can quantify swallowing pathophysiology to evaluate the status of the pharynx. Sequential 4-channel neuromuscular electrical stimulation (NMES) was recently developed based on the normal contractile sequences of swallowing-related muscles. This study aimed to examine the effects of sequential 4-channel NMES for compensatory application during swallowing and to observe the residual effects after the application of NMES using HRM.

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Surface-enhanced Raman scattering (SERS) exploits localized surface plasmon resonances in metallic nanostructures to significantly amplify Raman signals and perform ultrasensitive analyses. A critical factor for SERS-based analysis systems is the formation of numerous electromagnetic hot spots within the nanostructures, which represent regions with highly concentrated fields emerging from excited localized surface plasmons. These intense hotspot fields can amplify the Raman signal by several orders of magnitude, facilitating analyte detection at extremely low concentrations and highly sensitive molecular identification at the single-nanoparticle level.

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Fibrous dysplasia (FD) poses a therapeutic challenge due to the dysregulated extracellular matrix (ECM) accumulation within affected bone tissues. In this study, we investigate the therapeutic potential of 1,25-dihydroxyvitamin D3 (1,25(OH)D) in managing FD by examining its effects on FD-derived cells in vitro. Our findings demonstrate that 1,25(OH)D treatment attenuates the pro-fibrotic phenotype of FD-derived cells by suppressing the expression of key pro-fibrotic markers and inhibiting cell proliferation and migration.

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Fibrous dysplasia (FD) is a rare bone disorder characterized by the replacement of normal bone with benign fibro-osseous tissue. Developments in our understanding of the pathophysiology and treatment options are impeded by the lack of suitable research models. In this study, we developed an in vitro organotypic model capable of recapitulating key intrinsic and phenotypic properties of FD.

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Bovine abortion is a critical problem in the cattle industry. Identifying causes of abortion is key to establishing appropriate herd management and prevention strategies. We used pathology examinations, detection of etiologic agents, and serology to determine the cause of bovine abortions in Korea.

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The kidney is a complex organ consisting of various cell types. Previous studies have aimed to elucidate the cellular relationships among these cell types in developing and mature kidneys using Cre-loxP-based lineage tracing. However, this methodology falls short of fully capturing the heterogeneous nature of the kidney, making it less than ideal for comprehensively tracing cellular progression during kidney development and maintenance.

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Article Synopsis
  • * In experiments with rats, HemoHIM G showed no signs of acute toxicity even at high doses (up to 5000 mg/kg/day) and did not lead to any adverse effects after 13 weeks of repeated dosing.
  • * Tests conducted for potential genotoxicity confirmed that HemoHIM G is non-mutagenic and non-clastogenic, indicating it is safe for use as a food ingredient.
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Synaptically localized NMDA receptors (NMDARs) play a crucial role in important cognitive functions by mediating synaptic transmission and plasticity. In contrast, a tonic NMDAR current, thought to be mediated by extrasynaptic NMDARs, has a less clear function. This review provides a comprehensive overview of tonic NMDAR currents, focusing on their roles in synaptic transmission/plasticity and their impact on cognitive functions and psychiatric disorders.

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This study aimed to investigate the effects of sandblasting on the physical properties and bond strength of two types of translucent zirconia: niobium-oxide-containing yttria-stabilized tetragonal zirconia polycrystals ((Y, Nb)-TZP) and 5 mol% yttria-partially stabilized zirconia (5Y-PSZ). Fully sintered disc specimens were either sandblasted with 125 µm alumina particles or left as-sintered. Surface roughness, crystal phase compositions, and surface morphology were explored.

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Article Synopsis
  • * In vitro experiments showed that neuronal cells lacking kallistatin experienced higher oxidative stress and promoted apoptosis after ischemia-reperfusion injury.
  • * Clinical findings indicated that cardiac arrest survivors with lower serum kallistatin and higher Nox-1 levels had poorer neurological outcomes, linking kallistatin levels to recovery after cardiac arrest.
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Background: Recently, we developed a chest compression device that can move the chest compression position without interruption during CPR and be remotely controlled to minimize rescuer exposure to infectious diseases. The purpose of this study was to compare its performance with conventional mechanical CPR device in a mannequin and a swine model of cardiac arrest.

Materials And Methods: A prototype of a remote-controlled automatic chest compression device (ROSCER) that can change the chest compression position without interruption during CPR was developed, and its performance was compared with LUCAS 3 in a mannequin and a swine model of cardiac arrest.

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The initial microbial contamination of carcasses during slaughtering adversely affects spoilage and shelf life and is of global concern for food safety and meat quality. This study evaluated the hygiene and quality using the prevalence of foodborne pathogens and the level of indicator bacteria on 200 carcasses, collecting 10 from each of 20 cattle slaughterhouses in Korea. The distribution of aerobic bacterial count in carcasses was significantly highest at 2.

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Isozymes are enzymes that catalyze identical biological reactions, yet exhibit slight variations in structures and catalytic efficiency, which enables the precise adjustment of metabolism to fulfill the specific requirements of a particular tissue or stage of development. Methionine aminopeptidase (MetAP) isozymes function a critical role in cleaving N-terminal methionine from nascent proteins to generate functional proteins. In humans, two distinct MetAP types I and II have been identified, with type I further categorized into cytosolic (MetAP1) and mitochondrial (MetAP1D) variants.

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Article Synopsis
  • The study investigated bone turnover markers (BTMs) - CTX, P1NP, and osteocalcin - in Korean patients with osteoporosis through a multicenter clinical analysis.
  • It focused on pre- and post-menopausal women and men, collecting demographic data and measuring BTM levels, while excluding patients without sufficient test results.
  • Results showed significant BTM levels in both genders, with teriparatide increasing P1NP and denosumab decreasing CTX, providing valuable data for future bone health assessments in Koreans.
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Fibrous dysplasia (FD) is a rare, non-hereditary skeletal disorder characterized by its chronic course of non-neoplastic fibrous tissue buildup in place of healthy bone. A myriad of factors have been associated with its onset and progression. Perturbation of cell-cell signaling networks and response outputs leading to disrupted building blocks, incoherent multi-level organization, and loss of rigid structural motifs in mineralized tissues are factors that have been identified to participate in FD induction.

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