神经毒性
红藻氨酸
NMDA受体
谷氨酸受体
毒性
兴奋毒性
药理学
AMPA受体
化学
生物
生物化学
医学
内科学
受体
作者
Byung-Soo Koo,Hyun-Guk An,Sung‐Kwon Moon,Young Choon Lee,Hyung-Min Kim,Jeong‐Heon Ko,Cheorl-Ho Kim
标识
DOI:10.1081/iph-120020469
摘要
Bombycis corpus (BC) or Bombyx Batryticatus, a batryticated silkworm and white-stiff silkworm, is a drug consisting of the dried larva of silkworm, Mobyz mori L., dead and stiffened due to the infection of Beauveria (Bals.) Vuill. In a previous paper (Kim et al., Pharmacol. Res., 43, 12-16, 2001), BC was shown to protect amyloid-beta-induced cytotoxicity. In the present study, we have found that BCE can prevent or reduce the neurotoxic actions in the hippocampus of the glutamate agonists N-methyl-D-aspartic acid (NMDA) in vitro or alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) and kainic acid in vitro. Pre-treatment with BCE (0, 1, 2, 5, and 10 microg/ml for 6-8 h) protected primary hippocampal cultures from embryonic day 18 (E18) embryos against NMDA-induced toxicity (0.1, 1, 10, and 50 nM/ml). BCE added either with NMDA (1 mM) or 1 h later had lesser, but still significant, protective actions. BCE also reduced NMDA-induced toxicity (1 mM). BCE (10 microg/ml) protected cultured neurons against the neurotoxic actions of either AMPA (25 microM) or kainic acid (1 mM) as well. Because the release of glutamate has been implicated in the neural damage after cerebral ischemia and other neural insults, these results suggest that BCE may contribute significantly to protect human brain to such damage.
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