Publications by authors named "Chang-H Kim"

Background: Numerous studies have been conducted to manage anemia in surgical patients through iron supplementation as an alternative to blood transfusion. However, patients with locally advanced rectal cancer have often been excluded from these studies, due to their standard treatment involving neoadjuvant chemoradiotherapy. This study aims to evaluate the impact of intravenous versus oral iron supplementation on iron deficiency anemia in patients with rectal cancer receiving preoperative chemoradiotherapy.

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  • A study analyzed discussions about glucagon-like peptide-1 receptor agonists (GLP-1RAs) on Reddit from 2013 to 2023 to understand public perceptions and sentiment.
  • The research found that a significant amount of posts (14,390) were created after 2021, aligning with increased Google search interest, and revealed 30 main discussion topics largely focused on diabetes and obesity.
  • Most of the sentiment in the posts was negative, with common themes addressing success in managing conditions, challenges with insurance, and inquiries about side effects and medication usage.
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  • Ferroelectric HfO-based thin films are being researched for their potential in advanced electronic devices, but understanding their ferroelectric properties at the nanoscale remains a challenge due to their complex structures.
  • Recent studies using electron microscopy techniques have detailed the in-plane domain structures of Y:HfO films, revealing how their unique grain boundaries and phases contribute to their ferroelectricity.
  • Key findings show that specific orientations and patterns within the grain structures enhance polarization, and the behavior of domain walls affects the overall ferroelectric performance depending on their alignment and thickness of the films.
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Purpose: Debate persists regarding the feasibility of adopting an organ-preserving strategy as the treatment modality for clinical T2N0 rectal cancer. This study aimed to compare the outcomes of attempting organ-preserving strategies versus radical surgery in patients with clinical T2N0 mid to low rectal cancer.

Methods: Patients diagnosed with clinical T2N0 rectal cancer, with lesions located within 8 cm from the anal verge as determined by pre-treatment magnetic resonance imaging between January 2010 and December 2020 were included.

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Purpose: We investigated the current practices and perceptions of colorectal surgeons in South Korea regarding intracorporeal ileocolic anastomosis (IIA) in minimally invasive right hemicolectomy (RHC).

Methods: Members of the Korean Society of Coloproctology (KSCP) participated in an online survey encompassing demographic information, surgical experiences, methods for IIA, and advantages, barriers, and perceptions of IIA. We performed a statistical analysis of survey results.

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Thrombospondin-1 (TSP1) is a matricellular protein associated with the regulation of cell migration through direct binding interactions with integrin proteins and by associating with other receptors known to regulate integrin function, including CD47 and CD36. We previously demonstrated that deletion of an epithelial TSP1 receptor, CD47, attenuates epithelial wound repair following intestinal mucosal injury. However, the mechanisms by which TSP1 contributes to intestinal mucosal repair remain poorly understood.

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Retinoic acid (RA), controls the immunoregulatory functions of many immune cells, including dendritic cells (DCs), and is important for mucosal immunity. In DCs, RA regulates the expression of pattern recognition receptors and stimulates interferon production. Here, we investigated the role of RA in DCs in mounting immunity to respiratory syncytial virus (RSV).

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Purpose: We conducted a randomized prospective trial (KLASS-07 trial) to compare laparoscopy-assisted distal gastrectomy (LADG) and totally laparoscopic distal gastrectomy (TLDG) for gastric cancer. In this interim report, we describe short-term results in terms of morbidity and mortality.

Methods And Methods: The sample size was 442 participants.

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  • The study investigated the incidence and clinical significance of bacteremia in patients with complicated pleural infections, finding that 7% of the 341 patients had positive blood cultures.
  • Blood cultures offered limited additional diagnostic information compared to pleural fluid cultures and did not affect in-hospital mortality rates significantly.
  • The only factor closely linked to higher overall mortality was a higher RAPID score, indicating that blood cultures may benefit certain patients, particularly those with cavitary lesions or higher RAPID scores.
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Collagen is a complex, large protein molecule that presents a challenge in delivering it to the skin due to its size and intricate structure. However, conventional collagen delivery methods are either invasive or may affect the protein's structural integrity. This study introduces a novel approach involving the encapsulation of collagen monomers within zwitterionic nanoliposomes, termed Lip-Cols, and the controlled formation of collagen fibrils through electric fields (EF) stimulation.

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The scale-free ferroelectricity with superior Si compatibility of HfO has reawakened the feasibility of scaled-down nonvolatile devices and beyond the complementary metal-oxide-semiconductor (CMOS) architecture based on ferroelectric materials. However, despite the rapid development, fundamental understanding, and control of the metastable ferroelectric phase in terms of oxygen ion movement of HfO remain ambiguous. In this study, we have deterministically controlled the orientation of a single-crystalline ferroelectric phase HfO thin film via oxygen ion movement.

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Innate lymphoid cells (ILCs), strategically positioned throughout the body, undergo population declines over time. A solution to counteract this problem is timely mobilization of multipotential progenitors from the bone marrow. It remains unknown what triggers the mobilization of bone marrow ILC progenitors (ILCPs).

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  • A randomized controlled trial (KLASS-07) was conducted to compare the efficacy of totally laparoscopic distal gastrectomy (TLDG) and laparoscopy-assisted distal gastrectomy (LADG) in patients with clinical stage I gastric cancer.
  • The study involved 442 patients, with results showing no significant difference in overall complication rates between TLDG and LADG; however, TLDG resulted in fewer instances of postoperative ileus and pulmonary complications.
  • Quality of life improvements were noted in TLDG patients regarding pain, anxiety, emotion, and body image at 3-6 months post-surgery, although these differences were not sustained after one year.
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Colorectal cancer is the third most common cancer in Korea and the third leading cause of death from cancer. Treatment outcomes for colon cancer are steadily improving due to national health screening programs with advances in diagnostic methods, surgical techniques, and therapeutic agents..

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Background: Even amid the coronavirus disease-19 (COVID-19) pandemic, the spread of multidrug-resistant bacteria and infection control are still important tasks. After recognizing the carbapenem-resistant (CRAB) outbreak that occurred in the isolation room for COVID-19, we would like to introduce what infection control measures were implemented to eradicate it.

Materials And Methods: All COVID-19 patients with CRAB in any specimen admitted to the COVID-19 isolation ward of the tertiary hospital in Korea from October to November 2021 were analyzed.

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Background: Digital health technologies are rapidly evolving and transforming the care of diabetes and cardiovascular disease (CVD).

Purpose Of The Review: In this review, we discuss emerging approaches incorporating digital health technologies to improve patient outcomes through a more continuous, accessible, proactive, and patient-centered approach. We discuss various mechanisms of potential benefit ranging from early detection to enhanced physiologic monitoring over time to helping shape important management decisions and engaging patients in their care.

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Background: Limited data exist regarding the prognostic implications of N-terminal pro-B-type natriuretic peptide (NT-proBNP) in patients with non-ST-elevation myocardial infarction (NSTEMI) who undergo percutaneous coronary intervention (PCI).

Methods and results: Of 13,104 patients in the nationwide Korea Acute Myocardial Infarction Registry-National Institutes of Health, 3,083 patients with NSTEMI who underwent PCI were included in the present study. The primary endpoint was major adverse cardiovascular events (MACE) at 3 years, a composite of all-cause death, recurrent myocardial infarction, unplanned repeat revascularization, and admission for heart failure.

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Objective: Endovascular coil embolization is the primary treatment modality for intracranial aneurysms. However, its long-term durability remains of concern, with a considerable proportion of cases requiring aneurysm reopening and retreatment. Therefore, establishing optimal follow-up imaging protocols is necessary to ensure a durable occlusion.

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Isolated cryptococcal pleural effusion is rare as the initial clinical presentation in opportunistic cryptococcal infection. We describe a 59-year-old male heart transplantation recipient who presented with a mononuclear-leukocyte-predominant exudative pleural effusion, with adenosine deaminase levels (ADA) of 37 IU/L and focal pleural nodularity on computed tomography. A thorough evaluation, including pleural fluid culture, cryptococcal antigen, and histological examination, led to the diagnosis of cryptococcal pleural effusion.

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  • The study focuses on the role of pleural fluid carcinoembryonic antigen (PF-CEA) levels in patients with advanced lung adenocarcinoma and malignant pleural effusion (MPE) in relation to epidermal growth factor receptor (EGFR) mutations and treatment outcomes.
  • Findings reveal that higher PF-CEA levels are independently linked to a greater likelihood of EGFR mutations and are associated with improved survival rates in patients treated with EGFR-tyrosine kinase inhibitors (TKIs).
  • The research underscores the need for careful evaluation of PF-CEA levels in lung cancer patients, as elevated levels could indicate useful insights for treatment strategies, even when cytology results are negative.
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The mammalian gut microbiota plays diverse and essential roles in modulating host physiology. Key mediators determining the outcome of the microbiota-host interactions are the small molecule metabolites produced by the gut microbiota. The liver is a major organ exposed to gut microbial metabolites, and it serves as the nexus for maintaining healthy interactions between the gut microbiota and the host.

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Background: Cardiac rehabilitation (CR) is an evidence-based, guideline-recommended intervention for patients recovering from a cardiac event, surgery or procedure that improves morbidity, mortality, and functional status. CR is traditionally provided in-center, which limits access and engagement, most notably among underrepresented racial and ethnic groups due to barriers including cost, scheduling, and transportation access. This study is designed to evaluate the Corrie Hybrid CR, a technology-based, multicomponent health equity-focused intervention as an alternative to traditional in-center CR among patients recovering from a cardiac event, surgery, or procedure compared with usual care alone.

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Background And Purpose: This study aimed to investigate the predictive factors of severe radiation-induced lung injury (RILI) in patients with lung cancer and coexisting interstitial lung disease (ILD) undergoing conventionally fractionated thoracic radiotherapy.

Materials And Methods: The study includes consecutive patients treated with thoracic radiotherapy for lung cancer at two tertiary centers between 2010 and 2021. RILI severity was graded using the National Cancer Institute Common Terminology Criteria version 5.

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