[荧光探针在卵磷脂多层膜中的扩散及稳恒磁场的影响]
[Diffusion of a fluorescent probe in egg lecithin multilayers and the effect of a permanent magnetic field].
作者信息
Lesin V I, Vyshenskaia T V, Livshits V A, Kuznetsov A N
出版信息
Biofizika. 1986 Jul-Aug;31(4):611-5.
PMID:3756229
Abstract
A method is developed for determining the value of transverse diffusion coefficient through lipid multilayers. Using the absorption kinetics parameters of 1-aniline-8-sulphonate naphthalene (ANS) the value of diffusion coefficient was estimated as Dt = (3 +/- 1). X 10(-12) cm2 s-1 at (22 +/- 0.5) degrees C. The value of Dt was shown to increase under the action of the magnetic field parallel to the multilayer surface; a relative increase of Dt at field 1.3 T is +(40 +/- 15)%.
摘要
开发了一种测定穿过脂质多层膜横向扩散系数值的方法。利用1-苯胺-8-磺酸萘（ANS）的吸收动力学参数，在（22±0.5）℃下估算扩散系数值为Dt =（3±1）×10⁻¹² cm² s⁻¹。结果表明，在平行于多层膜表面的磁场作用下，Dt值会增加；在1.3 T磁场下，Dt的相对增加量为 +（40±15）%。
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