Chul-Kyu Kim

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Stroke is the second leading cause of death. Experimental animal models of cerebral ischemia are widely used for researching mechanisms of ischemic damage and developing new drugs for the prevention and treatment of stroke. The present study aimed to comparatively investigate neuroprotective effects of aspirin (ASA), decursinol (DA) and new synthetic(More)
BACKGROUND/OBJECTIVES Acanthopanax sessiliflorus is a native Korean plant and used as traditional medicine or an ingredient in many Korean foods. The free radical theory of aging suggests that cellular oxidative stress caused by free radicals is the main cause of aging. Free radicals can be removed by cellular anti-oxidants. MATERIALS/METHODS Here, we(More)
Obesity has increased continuously in western countries during the last several decades and recently become a problem in developing countries. Currently, anti-obesity drugs originating from natural products are being investigated for their potential to overcome adverse effects associated with chemical drugs. Artemisinic acid, which was isolated from the(More)
This paper addresses a task of automatically identifying abnormal chat users where training data is given as a collection of chat messages from both abnormal and normal users. We employ a k-NN classification based on an IR technique. A document is constructed in per-conversation for each user by concatenating his/her messages in a conversation. A query is(More)
The free radical theory of aging suggests that the age-dependent accumulation of oxidative damage induced by free radicals is the main cause of normal aging (Harman, 1956). Reactive oxygen species (RDS) are produced as a byproduct of normal cellular metabolism and main free radicals in cells. To prevent RDS-induced oxidative damage, cells have evolved(More)
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