Amphiphilic sites for general anesthetic action? Evidence from 129Xe-[1H] intermolecular nuclear Overhauser effects.
Amphiphilic sites for general anesthetic action? Evidence from 129Xe-[1H] intermolecular nuclear Overhauser effects.
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用于全身麻醉作用的两亲位点?
DOI:
10.1016/s0005-2736(96)00184-8
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发表时间:
1997
期刊:
影响因子:
--
通讯作者:
Tang,P
中科院分区:
文献类型:
--
作者:
Xu,Y;Tang,P
Because a strong correlation exists between the potency of general anesthetics and their ability to dissolve in oil, a lipophilic site of action is often assumed. We show here that a lipophilic molecule may preferentially target less lipophilic sites after interaction with a membrane takes place. Xenon, a chemically inert and structureless general anesthetic, was chosen as an unbiased molecular probe for assessment of its dynamic distribution. Site-selective, intermolecular129Xe-{1H} nuclear Overhauser effects were used to measure the specific interaction between xenon and protons in different regions in a phosphatidylcholine lipid membrane. It was evident that xenon–membrane interaction was directed toward the amphiphilic head region, with significant involvement of interfacial water, despite xenon's apolar and highly lipophilic nature in the gas phase. This result may suggest the importance of amphiphilicity in association with anesthetic action.
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DOI:
--
发表时间:
1987
期刊:
影响因子:
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作者:
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通讯作者:
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DOI:
--
发表时间:
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期刊:
影响因子:
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