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KMID : 0616120160470030211
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Korean Journal of Pharmacognosy
2016 Volume.47 No. 3 p.211 ~ p.216
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Quantitative Analysis of Luteolin 5-glucoside in Ajuga spectabilis and Their Neuroprotective Effects
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Woo Kyeong-Wan
Sim Mi-Ok
Kim A-Hyeon
Kang Byoung-Man
Jung Ho-Kyung
An Byeong-Kwan
Cho Jung-Hee
Cho Hyun-Woo
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Abstract
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In the course of our continuing search for biologically active components from Korean medicinal plants, we isolated the main compound, luteolin 5-glucoside from aqueous fraction of Ajuga spectabilis. The structure was elucidated by the basis of 1H and 13C NMR and TOF ESI-MS data. Quantitative analysis of luteolin 5-glucoside was carried out on a XBridge C18 column (S-5 mm, 4.6×250 mm) with gradient elution composed of acetonitrile:water. The results exhibit that the average content of main compound in A. spectabilis were 0.048%. Oxidative stress plays a major role Alzheimer’s disease (AD) and other neurodogenerative disease. AD is major health problem and there is currently no clinically accepted treatment to cure or stop its progression. Pretreatment with luteolin 5-glucoside markedly attenuated H2O2-induced cell viability loss in a dose-dependent manner. Luteolin 5-glucoside also inhibited the formation of intracellular reactive oxygen species in SH-SY5Y. The results suggest that luteolin 5-glucoside from A. spectabilis has protective effects against oxidative stress-induced cytotoxicity, which might be a potential therapeutic compound for treating and/or preventing neurodegenerative disease implicated with oxidative stress.
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KEYWORD
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Labiatae, Ajuga spectabilis, Luteolin 5-glucoside, Neuroprotective effect
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