Yeung Bae Jin

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PURPOSE Epidemiological studies have demonstrated a possible correlation between exposure to extremely low-frequency magnetic fields (ELF-MF) and cancer. However, this correlation has yet to be definitively confirmed by epidemiological studies. The principal objective of this study was to assess the effects of 60 Hz magnetic fields in a normal cell line(More)
Wireless mobile phones and other telecommunication devices are used extensively in daily life. We therefore examined the effects of combined exposure to radiofrequency electromagnetic fields (RF-EMF) on rat testicular function, specifically with respect to sensitive processes such as spermatogenesis. Male rats were exposed to single code division multiple(More)
Endothelial cell function is critical for angiogenic balance in both physiological and pathological conditions, such as wound healing and cancer, respectively. We report here that soluble heat shock protein beta-1 (HSPB1) is released primarily from endothelial cells (ECs), and plays a key role in regulating angiogenic balance via direct interaction with(More)
Epidemiological studies have suggested that extremely low-frequency magnetic fields (ELF-MF) are associated with an increased incidence of cancer. Studies using in vitro systems have reported mixed results for the effects of ELF-MF alone, and the World Health Organization (WHO) Research Agenda published in 2007 suggested that high priority research should(More)
β-Galactoside α2,6-sialyltransferase (ST6Gal-I) has been shown to catalyze α2,6 sialylation of N-glycan, an action that is highly correlated with colon cancer progression and metastasis. We have recently demonstrated that ST6Gal-I-induced α2,6 sialylation is critical for adhesion and migration of colon cancer cells. Increase of α2,6 sialylation also(More)
The antidiabetic therapeutic effect of Ecklonia cava, a brown alga, was investigated using streptozotocin-induced type 1 diabetes mellitus rats and C2C12 myoblasts. The methanol extract of E. cava (ECM), having a strong radical scavenging activity, significantly reduced plasma glucose level and increased insulin concentration in type 1 diabetes mellitus(More)
The radiosensitizing effects of naturally occurring triterpenes were investigated in human lung cancer cells. Several quinone methide-containing triterpenes (QMTs) enhanced the cytotoxic effect of ionizing radiation (IR) and of these QMTs, celastrol (CE) had the greatest enhancing effect on IR-induced cell death in vitro. Additionally, the quinone methide(More)
Despite more than a decade of research on the endocrine system, there have been no published studies about the effects of concurrent exposure of radiofrequency electromagnetic fields (RF-EMF) on this system. The present study investigated the several parameters of the endocrine system including melatonin, thyroid stimulating hormone, stress hormone and sex(More)
There are public concerns regarding possible carcinogenic or cancer-promoting effects of radiofrequency electromagnetic fields (RF-EMFs) because of the extensive use of wireless mobile phones and other telecommunication devices in daily life. However, so far it is unclear if non-thermal exposure of single EMF exposure in animal studies has a direct(More)
Glioma cells with stem cell properties, termed glioma stem-like cells (GSCs), have been linked to tumor formation, maintenance, and progression and are responsible for the failure of chemotherapy and radiotherapy. Because conventional glioma treatments often fail to eliminate GSCs completely, residual surviving GSCs are able to repopulate the tumor.(More)