Publications by authors named "Kim Ma"

Article Synopsis
  • This study examined how patients with allergic rhinitis choose their treatments, including medications, environmental controls, and surgical options.
  • Among 51 surveyed patients, most were prescribed medication, often only using it during symptoms, and many were aware of immunotherapy with no strong preference between types.
  • A significant portion of patients reported using air purifiers for relief, but results varied on effectiveness, while those who underwent surgical treatment generally expressed high satisfaction levels.
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Background & Aims: Various hepatocellular carcinoma (HCC) prediction models have been proposed for patients with chronic hepatitis B (CHB) using clinical variables. We aimed to develop an artificial intelligence (AI)-based HCC prediction model by incorporating imaging biomarkers derived from abdominal computed tomography (CT) images along with clinical variables.

Methods: An AI prediction model employing a gradient-boosting machine algorithm was developed utilizing imaging biomarkers extracted by DeepFore, a deep learning-based CT auto-segmentation software.

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Bacterial biofilms are highly structured surface associated architecture of micro-colonies, which are strongly bonded with the exopolymeric matrix of their own synthesis. These exopolymeric substances, mainly exopolysaccharides (EPS) initially assist the bacterial adhesion and finally form a bridge over the microcolonies to protect them from environmental assaults and antimicrobial exposure. Bacterial cells in dental biofilm metabolize dietary carbohydrates and produce organic acids.

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We aimed to gather evidence on the feasibility of using simulator-based driving assessments for prescribing powered mobility devices (PMDs). Therefore, we compared the driving characteristics of real driving and two types of simulated driving. Thirty participants with difficulty walking more than 100 meters independently were enrolled.

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  • The study examines the role of phase variation in the oipA gene of Helicobacter pylori, which is associated with IL-8 induction and gastric inflammation, in the context of H. pylori's overall virulence and potential links to gastric cancer.
  • Using two different strains, the research differentiates between natural and in vitro-induced phase variations of the oipA gene, discovering that while natural variations don’t significantly impact IL-8 induction or cell elongation, in vitro changes do show effects on cell morphology.
  • The findings highlight the complexity of genetic interactions influencing the virulence of H. pylori, suggesting that oipA phase variation plays a crucial, yet nuanced role in bacterial pathogenicity and warrants further investigation into
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Objective: Although several studies have highlighted the benefits of statins in improving arterial stiffness, there is limited research on whether pitavastatin, a more recently developed statin, has similar effects. This study aimed to investigate the impact of pitavastatin on arterial stiffness in patients with hypercholesterolemia.

Methods: This prospective study enrolled 115 patients with hypercholesterolemia (mean age, 59 years; 22% female) who had not previously been treated with statins.

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  • Pancreatic cancer has limited treatment options, and a new method called Alpha DaRT, using alpha-particle radiation therapy, is being tested to improve outcomes.
  • A study evaluated the safety and feasibility of using EUS-guided Alpha DaRT to treat patients with advanced, inoperable pancreatic cancer, with procedures conducted successfully between March and September 2023.
  • Results showed that while some adverse events occurred, most were related to disease progression rather than the treatment, and preliminary findings indicate that this approach is both feasible and safe, warranting further investigation.
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  • The study examined how socioeconomic status (SES), including income and education, affects arterial stiffness as measured by estimated pulse wave velocity (ePWV) among 13,539 participants in South Korea.
  • Results showed that while personal income had no significant impact on ePWV, higher household income and higher education levels were linked to lower ePWV values.
  • The findings suggest that individuals with lower income and education levels experience greater arterial stiffness, highlighting the importance of SES in cardiovascular health.
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Allatotropin (AT) has been identified in many insects and plays important roles in the regulation of their intestinal contraction, heart rate, ion transport, and digestive enzyme secretion. However, information on AT-related bioinformatics in other animal phyla is scarce. In this study, we cloned a full-length cDNA encoding the AT-related peptide receptor (ATRPR) of the abalone Haliotis discus hannai (Hdh) and further characterized Hdh-ATRPR with its potential ligands, Hdh-ATRPs.

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The primary hepatic leiomyosarcoma is a rare malignant tumor arising from the smooth muscle cells in the hepatic vessels, bile ducts, and ligamentum teres. It is considered a subtype of hepatic sarcomas. We report awkward F-FDG PET-CT findings of a primary hepatic leiomyosarcoma masquerading as a benign hepatic tumor, which were confirmed by histopathological and immunohistochemical examinations in a 78-year-old woman.

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  • This study investigates the genes involved in the early developmental stages of the East Asian common octopus (Octopus sinensis) through RNA sequencing.
  • Researchers identified 5,468 differentially expressed genes (DEGs) between hatched paralarvae and those 25 days post-hatching, revealing important factors affecting growth and development.
  • The findings highlight key genes linked to processes like transmembrane transport and lipid biosynthesis, offering insights for improving octopus production and understanding their survival mechanisms.
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Ligands play a critical role in the optical properties and chemical stability of colloidal nanocrystals (NCs), but identifying ligands that can enhance NC properties is daunting, given the high dimensionality of chemical space. Here, we use machine learning (ML) and robotic screening to accelerate the discovery of ligands that enhance the photoluminescence quantum yield (PLQY) of CsPbBr perovskite NCs. We developed a ML model designed to predict the relative PL enhancement of perovskite NCs when coordinated with a ligand selected from a pool of 29,904 candidate molecules.

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The burgeoning interest in intelligent transportation systems (ITS) and the widespread adoption of in-vehicle amenities like infotainment have spurred a heightened fascination with vehicular ad-hoc networks (VANETs). Multi-hop routing protocols are pivotal in actualizing these in-vehicle services, such as infotainment, wirelessly. This study presents a novel protocol called multiple junction-based traffic-aware routing (MJTAR) for VANET vehicles operating in urban environments.

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Graphene's wetting transparency offers promising avenues for creating multifunctional devices by allowing real-time wettability control on liquid substrates via the flow of different liquids beneath graphene. Despite its potential, direct measurement of floating graphene's wettability remains a challenge, hindering the exploration of these applications. The current study develops an experimental methodology to assess the wetting transparency of single-layer graphene (SLG) on liquid substrates.

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Background: While inhalation therapy efficacy hinges on attaining proper peak inspiratory flow rate (PIFR), the prevalence of inappropriate PIFR among patients with chronic obstructive pulmonary disease (COPD) remains unstudied in Korea. This study aimed to assess the prevalence of inappropriate PIFR, its correlation with COPD assessment test (CAT) scores, and factors associated with suboptimal PIFR.

Methods: We enrolled 108 patients with COPD who had been using the same inhaler for at least 1 year without exacerbations.

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  • Myoinhibitory peptides (MIPs) play important roles in various physiological functions in invertebrates, but their signaling systems have not been fully studied in mollusks.
  • In this study, researchers identified eight distinct MIPs in the Pacific abalone, Haliotis discus hannai, and a functional receptor (Hdh-MIPR) that interacts with these peptides.
  • The findings showed that Hdh-MIPs can delay larval metamorphosis while promoting spawning behavior, indicating a unique function of MIPs in invertebrate biology.
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Introduction And Objectives: There are no clinical data on the efficacy of intravascular imaging-guided percutaneous coronary intervention (PCI) compared with angiography-guided PCI in patients with acute myocardial infarction (AMI) and cardiogenic shock. The current study sought to evaluate the impact of intravascular imaging-guided PCI in patients with AMI and cardiogenic shock.

Methods: Among a total of 28 732 patients from the nationwide pooled registry of KAMIR-NIH (November, 2011 to December, 2015) and KAMIR-V (January, 2016 to June, 2020), we selected a total of 1833 patients (6.

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Early identification of women at high risk for cardiovascular diseases (CVD), with subsequent monitoring, will allow for improved clinical outcomes and generally better quality of life. This study aimed to identify the associations between early menopause, abnormal diastolic function, and clinical outcomes. This retrospective study included 795 menopausal women from is a nationwide, multicenter, registry of patients with suspected angina visiting outpatient clinic.

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Achieving a good-quality death for children with cancer is as paramount as saving their life, given its implications for both the children's end-of-life quality and the grief journey of their parents. This study explored factors contributing to a good death for children with cancer, as perceived by bereaved parents in South Korea. A retrospective survey was conducted, involving 58 bereaved parents of a child who died of cancer.

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  • Postmenopausal women in a study were older on average than men, but had higher healthy cholesterol levels and lower smoking rates.
  • Though men had a higher prevalence of significant coronary artery disease (b-CAD) and required more revascularization procedures, statistical analysis showed that sex did not significantly affect the likelihood of needing revascularization.
  • Interestingly, the long-term cardiovascular outcomes were better for postmenopausal women compared to men, suggesting they respond well to optimal treatment despite being older at the start of the study.
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  • COVID-19 severely impacts cancer patients, particularly those with metastatic cancer, and this study explored the relationship between cancer metastasis and COVID-19 outcomes.
  • Using data from the CCC19 registry, researchers analyzed over 10,000 cancer patients with COVID-19 to assess hospitalization rates and mortality based on the presence and site of metastasis.
  • Findings showed that patients with metastases had higher hospitalization rates (59% vs. 49%) and 30-day mortality (18% vs. 9%), with those having lung metastases experiencing the highest risk of death in that timeframe.
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  • The study analyzed pneumonia prevalence and chest X-ray severity among COVID-19 patients under 50, comparing vaccinated and non-vaccinated individuals.
  • The findings showed that vaccination significantly reduced pneumonia rates and X-ray severity scores in patients in their 20s and 40s, but not in those aged 12-19.
  • Overall, vaccination appears to be effective in preventing serious complications of COVID-19, particularly in older young adults.
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Many of community supports and resources were shattered in the COVID-19 pandemic, leaving parents to navigate caring for their adult child with intellectual disabilities with little support. This study explored caregiving stress experienced by parents of adult children with intellectual disabilities during the COVID-19 pandemic in Korea. In-depth interviews were conducted with 19 parents of an adult child with intellectual disabilities.

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Data on the impact of arterial stiffness on autonomic function are limited. We sought to investigate whether heart rate recovery (HRR), a predictor of autonomic function, is impaired in patients with increased arterial stiffness. A total of 475 participants (mean age 55.

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Background: BRAF mutations are classified into four molecularly distinct groups, and Class 1 (V600) mutant tumors are treated with targeted therapies. Effective treatment has not been established for Class 2/3 or BRAF Fusions. We investigated whether BRAF mutation class differed according to clinical, genomic, and transcriptomic variables in cancer patients.

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