Synchrotron X-ray diffraction study of the structure of oral stratum corneum model lipid membranes

被引：0
|
作者：
Ryabova, N. Yu. [1 ,2 ]
Gruzinov, A. Yu. [3 ]
Zabelin, A. V. [3 ]
机构：
[1] Joint Inst Nucl Res, Dubna 141980, Moscow Oblast, Russia
[2] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119234, Russia
[3] Natl Res Ctr, Kurchatov Inst, Moscow 123182, Russia
来源：
CRYSTALLOGRAPHY REPORTS | 2014年 / 59卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
PHASE-BEHAVIOR; NEUTRON-DIFFRACTION; FATTY-ACIDS; ORGANIZATION; CHOLESTEROL; MIXTURE; SKIN;
D O I：
10.1134/S106377451401012X
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Membranes modeling the lipid fraction of the mucous membrane of the human oral cavity have been studied by X-ray synchrotron diffraction. Ternary systems, composed of a mixture of sphingomyelin, dipalmitoylphosphatidylcholine, and dipalmitoylphosphatidylethanolamine with component weight ratios of 1: 2: 2 and 1: 2: 1, have lamellar structures in the gel phase at the physiological temperature (37A degrees C). An inverted hexagonal phase is formed in the system with 40% dipalmitoylphosphatidylethanolamine in the temperature range of 60-70A degrees C. This phase coexists with the liquid-crystalline lamellar phase in a narrow temperature range and completely surpresses the lamellar phase with an increase in temperature to 80A degrees C. Multi-component oral stratum corneum membranes are characterized by several lamellar phases at 20-37A degrees C and the coexistence of one or several lamellar phases with inverted hexagonal phase at 80-90A degrees C.
引用
收藏
页码：117 / 124
页数：8
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