Publications by authors named "Seung Min Yang"

This consensus report presents the first official position statement of the Korean Academy of Periodontology on peri-implant diseases, issued in response to South Korea's rapidly aging population and the associated rise in peri-implant disease management. It reviews the prevalence, classification, and definition of peri-implant diseases, emphasizing that these conditions progress more aggressively and unpredictably than periodontal diseases. The report also identifies systemic and local risk indicators, diagnostic criteria, and evidence-based treatment protocols for peri-implant mucositis and peri-implantitis, integrating international standards with Korea-specific clinical data.

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This study investigated how differences in raw milk obtained from different milk production practices, such as conventional, antibiotic-free, and organic, influence microbial community structure and fatty acid profiles, potentially affecting milk quality. Microbial diversity revealed no significant differences among the three milk production practices. However, Pseudomonas was dominant across all milk types, with organic milk demonstrating significantly higher relative abundances of Lactococcus, Acinetobacter, and Carnobacterium.

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Accurate identification of Vibrio harveyi clade species is critical for seafood safety and the control of aquaculture diseases. However, existing methods demonstrate limited classification performance. This study presents an artificial intelligence-assisted matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) approach using on-plate protein extraction for direct colony analysis.

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Regenerative medicine with stem cells has played a pivotal role in tissue engineering, demonstrating remarkable potential to address degenerative diseases and tissue deficiencies. Despite its great potential, this field faces significant challenges, including the need to control cellular behavior, achieve real-time monitoring, and standardize stimulation protocols. To address these technical hurdles, the integration of stem cells with smart bioelectronic materials and devices has emerged as a groundbreaking paradigm in regenerative medicine, offering huge potential for improved therapeutic outcomes in various tissue engineering applications.

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Photothermal therapy (PTT) has attracted great interest due to the high spatial precision and reduced general toxicity compared to conventional cancer therapies. However, PTT often faces challenges such as incomplete tumor eradication and collateral damage to healthy tissues. Here, we report an injectable MXene-doxorubicin (MD) complex-loaded supramolecular hydrogel (MDGel) for dual synergistic cancer therapy of near-infrared (NIR) PTT and chemotherapy.

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A novel bacterial species, designated FBL11, was isolated from salted shrimp jeotgal, a traditional Korean fermented food sampled in the Republic of Korea. This strain showed the highest 16S rRNA gene sequence similarity to strain F2608 (NR_181578.1) at 98.

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Foodborne pathogens present a significant public health concern where fresh produce is a key agricultural product. Rapid and sensitive detection methods are essential to ensure the safety of such produce. This study aimed to develop and optimize a modified multiplex polymerase chain reaction (mPCR) assay, which incorporates enhancements to conventional PCR, for the simultaneous detection of Escherichia coli, Salmonella, and Listeria monocytogenes in fresh produce.

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Background: The conventional method of antigen-based serotyping for Salmonella poses challenges due to the necessity of utilizing over 150 antisera. More recently, in silico Salmonella serotyping has emerged as a predictive alternative. The purpose of this study was to predict the serovars of 62 Salmonella enterica strains isolated from Korean poultry operations and their genetic characteristics using whole genome sequencing.

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Soft robots have partially or entirely provided versatile opportunities for issues or roles that cannot be addressed by conventional machine robots, although most studies are limited to designs, controls, or physical/mechanical motions. Here, we present a transformable, reconfigurable robotic platform created by the integration of magnetically responsive soft composite matrices with deformable multifunctional electronics. Magnetic compounds engineered to undergo phase transition at a low temperature can readily achieve reversible magnetization and conduct various changes of motions and shapes.

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Over the past few decades, dental implants have been successfully utilized to replace teeth lost due to periodontal disease and other conditions. However, similar to natural teeth, dental implants are vulnerable to inflammatory peri-implant diseases, which can compromise their long-term viability. This review aims to summarize the current understanding of peri-implant diseases and discuss effective strategies for their diagnosis, treatment, and long-term management.

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This study introduces an innovative on-site diagnostic method for rapidly detecting the / complex (SBSEC), crucial for livestock health and food safety. Through a comprehensive genomic analysis of 206 genomes, this study identified genetic markers that improved classification and addressed misclassifications, particularly in genomes labeled and . These markers were integrated into a portable quantitative polymerase chain reaction (qPCR) that can detect SBSEC species with high sensitivity (down to 10 or 10 colony-forming units/mL).

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Various combination therapies have been investigated to overcome the limitations of using immune checkpoint inhibitors. However, determining the optimal combination therapy remains challenging. To overcome the therapeutic limitation, we conducted a translational research to elucidate the mechanisms by which AXL inhibition enhances antitumor effects when combined with anti-PD-1 antibody therapy.

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Article Synopsis
  • The study analyzed the immune cell and stromal components of the tumor microenvironment in non-small cell lung cancer (NSCLC) at a single-cell level using scRNA-seq data from 21 patients.
  • Results revealed two mutation clusters, showing distinct immune responses based on specific oncogene mutations, with one cluster having higher lymphoid structure scores and the other exhibiting alternative immune pathway expressions.
  • The findings suggest a strong link between mutation types and the tumor microenvironment, potentially guiding personalized treatment strategies for NSCLC.
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Paralysis of the extraocular muscles can lead to complications such as strabismus, diplopia, and loss of stereopsis. Current surgical treatments aim to mitigate these issues by resecting the paralyzed muscle or transposing the other recti muscles to the paralyzed muscle, but they do not fully improve the patient's quality of life. Electrical stimulation shows promise, while requiring further in vivo experiments and research on various stimulation parameters.

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This research focused on distinguishing distinct matrix assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) spectral signatures of three Enterococcus species. We evaluated and compared the predictive performance of four supervised machine learning algorithms, K-nearest neighbor (KNN), support vector machine (SVM), and random forest (RF), to accurately classify Enterococcus species. This study involved a comprehensive dataset of 410 strains, generating 1640 individual spectra through on-plate and off-plate protein extraction methods.

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  • The study aims to enhance the identification of various immune cells by analyzing both protein and mRNA expression patterns, focusing on the complex immune landscape in cancer ecosystems.
  • A total of 94,674 peripheral blood mononuclear cells (PBMCs), including 32,412 T cells, were analyzed using CITE-seq data, employing techniques like quality control, principal component analysis, and clustering visualization.
  • The results revealed that specific T cell subsets could be better distinguished using protein markers and novel mRNA correlations, leading to improved understanding of immune cell diversity and responses in health and disease.
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  • The study focuses on improving the identification of two subspecies of an important bacterial species used in fermented foods, using a combination of MALDI-TOF mass spectrometry and machine learning techniques.
  • Current identification methods only provide accuracy up to the species level, but machine learning models achieved high accuracy rates in correctly classifying the subspecies.
  • The random forest algorithm showed particularly strong performance, highlighting the potential of machine learning for rapid and precise microbial classification, which is crucial for food safety and quality.
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As an alternative to tissue adhesives, photochemical tissue bonding is investigated for advanced wound healing. However, these techniques suffer from relatively slow wound healing with bleeding and bacterial infections. Here, the versatile attributes of afterglow luminescent particles (ALPs) embedded in dopamine-modified hyaluronic acid (HA-DOPA) patches for accelerated wound healing are presented.

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  • The Aryl hydrocarbon receptor (AhR) is a key transcription factor involved in tumor progression and immune response, but its distribution in tumors and immune cells is not well understood.
  • This study utilized advanced techniques to analyze AhR expression in 513 patient samples, revealing that it is mainly found in cancer cells, with some presence in immune cells like T cells and macrophages.
  • The results categorized AhR expression patterns by cancer type, particularly highlighting high levels in regulatory T cells in non-small cell lung cancer, providing insights for future clinical trials on AhR-targeting therapies.
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Introduction: To understand the immune system within the tumor microenvironment (TME) of non-small cell lung cancer (NSCLC), it is crucial to elucidate the characteristics of molecules associated with T cell activation.

Methods: We conducted an in-depth analysis using single-cell RNA sequencing data obtained from tissue samples of 19 NSCLC patients. T cells were classified based on the Tumor Proportion Score (TPS) within the tumor region, and molecular markers associated with activation and exhaustion were analyzed in T cells from high TPS areas.

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The silkworm (Bombyx mori) has long been valued food and feed in East Asia for its abundant nutritional and medicinal attributes, conversely, it can elicit allergic responses in susceptible individuals. Therefore, the development of silkworm detection method is required to avert allergenic incidents. In this study, two methodologies, tandem mass spectrometry (LC-MS/MS) and real-time PCR, were developed to achieve effective silkworm detection.

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  • - The study highlights the emergence of transferable linezolid resistance genes in Staphylococcus aureus from pig carcasses, which not only leads to linezolid resistance but also lowers susceptibility to florfenicol, a common veterinary antibiotic
  • - Out of over 2500 strains analyzed, 15 showed high levels of linezolid resistance, with significant genetic diversity and one novel strain type identified (ST8004) that had not been reported before
  • - These resistant strains carry multiple antibiotic resistance genes and enterotoxin gene clusters, raising concerns about the potential for these genes to spread between bacteria, necessitating ongoing monitoring of these resistant strains in animals and food products
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  • Lavers are often sold in dried or seasoned forms, but their commercial processing can cause seafood fraud due to difficulty in identifying species visually.
  • This study created a unique testing method using capillary electrophoresis and multiplex PCR to accurately identify six laver species with newly designed primers targeting specific genes.
  • The method proved effective on 40 commercial laver products, revealing discrepancies where cheaper species were mixed in, highlighting its potential for reliable species authentication.
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  • Bioresorbable electronic systems require soft and stretchable substrates, but there are few elastomeric polymers with the necessary properties.
  • The newly introduced bioresorbable elastomer, poly(glycolide-co-ε-caprolactone) (PGCL), showcases impressive characteristics like high elongation, toughness, and customizable dissolution rates.
  • By combining PGCL with conductive polymers, researchers can create stretchable, conductive materials for temporary devices that support healing, like sutures with drug delivery systems for post-surgical recovery.
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