Ji Hyun Jo

BACKGROUND: In gastrointestinal tumors, only subunits of pyruvate kinase isoenzyme type M2 are detectable, and mainly in the dimeric form termed tumor M2-PK. A rapid test for the detection of M2-PK in stool has been developed. We evaluated the performance of the M2-PK rapid kit for the detection of colorectal tumors compared with colonoscopy DESIGN: Stool specimens (n=268) were obtained from patients who had a fecal occult blood test and colonoscopy performed for clinical evaluation or routine h

Mobile WiMAX based on IEEE802.16e standard supports various kinds of broadband data services such as VOD, VoIP, and MBS (multicast broadcast service). Unlike wired networks, however, wireless networks have limited bandwidth. MBS overcomes this problem using a shared downlink channel for efficiently supporting a number of users. However, its coverage and throughput are significantly affected by the operational condition. In this paper we propose to employ mobile multi-hop relay (MMR) along with a

Changes in microparticles (MP) from red blood cell (RBC) concentrates in the context of irradiation have not been investigated. The aim of this study was to evaluate how irradiation affects the number of MPs within transfusion components. Twenty RBC concentrates, within 14 days after donation, were exposed to gamma rays (dose rate: 25 cGy) from a cesium-137 irradiator. Flow cytometry was used to determine the numbers of MPs derived from RBC concentrates before and 24 hr after irradiation. The me

The demand on IPTV services has been greatly increasing in the area of wireless communication. For supporting a large number of users with limited resources, the development of effective transmission technology is inevitable. In this paper we propose an efficient batching scheme enhancing the performance of VoD system over wireless IPTV. The proposed approach capitalizes the notion of segment interval time to maximize the channel utilization. Computer simulation shows that the proposed approach

OBJECTIVE: The effect of interleukin (IL)-29, a new therapeutic agent similar to type I interferons (IFNs), on IFN-α secretion of human plasmacytoid dendritic cells (pDCs) has not been studied. Therefore, in this study, we aimed to clarify the effect of IL-29 on IFN-α secretion of pDCs using human peripheral blood mononuclear cells (PBMCs) in the presence of cytosine-phosphate-guanosinemotif-containing oligodeoxy nucleotides (CpG). MATERIALS AND METHODS: In this experimental and prospective stud

BACKGROUND: Neutrophil gelatinase-associated lipocalin (NGAL) is a urine biomarker related to acute renal injury. Whereas several studies have evaluated NGAL levels in hematological malignancy, using peripheral blood (PB). Recently, bone marrow (BM) NGAL level was reported to be higher than PB NGAL level in individuals with hematological malignancy, suggesting that BM NGAL would reflect BM microenvironment better than PB NGAL. We measured BM NGAL levels in patients with hematological malignancy,

Abstract Background Although neutrophil gelatinase‐associated lipocalin (NGAL) is a biomarker for acute kidney injury, recently, high NGAL levels have been reported in hematologic malignancies. Given the mechanism underlying NGAL synthesis and secretion in neutrophilic series, it is speculated that NGAL levels are higher in bone marrow (BM) than in peripheral blood (PB). Additionally, PB NGAL levels are thought to be associated with neutrophilic parameters. We aimed to test both hypotheses in he

Mosaic variegated aneuploidy (MVA) is a recessive condition characterized by mosaic aneuploidies, predominantly trisomies and monosomies, involving multiple chromosomes and tissues. The phenotype of MVA syndrome includes severe microcephaly and growth deficiency, central nervous system anomalies, mental retardation, mild physical anomalies, and predisposition to cancer. We report a case of true fetal mosaicism for variegated aneuploidies detected in amniotic fluid cells. A 33-year-old primigravi

Background: ABO antibody titration is useful for the evaluation of ABO-incompatible bone marrow or solid organ transplantations, yet the results quite vary between different test methods used. We compared the results of microcolumn agglutination and tube methods. Methods: Anti-A and anti-B isoagglutionin titers were determined in 63 healthy individuals (23 O, 20 A, and 20 B blood groups) using 4 different methods: immediate spin tube (tube), microcolumn agglutination without anti-human globulin

In pus and wound samples collected from the right second toe of a 61-year-old woman with diabetes mellitus (DM), gram-negative diplococci bacterium was observed. However, the bacterium could not be identified by conventional microbiological methods and mass spectrometry. In the partial 16S rRNA gene sequence analysis, the bacterium showed a 100% identity match with GenBank sequence FJ0763637.1 (Neisseria skkuensis). N. skkuensis, SMC-A9199 strain, was reported as a novel species in 2010 based on

Although presepsin, a crucial biomarker for the diagnosis and management of sepsis, has gained prominence in contemporary medical research, its relationship with routine laboratory parameters, including demographic data and hospital blood test data, remains underexplored. This study integrates machine learning with explainable artificial intelligence (XAI) to provide insights into the relationship between presepsin and these parameters. Advanced machine learning classifiers provide a multilatera