Electron Paramagnetic Resonance Investigation of Stratum Corneum Lipid Structure

Electron Paramagnetic Resonance Investigation of Stratum Corneum Lipid Structure
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角质层脂质结构的电子顺磁共振研究

DOI:
10.1007/s11745-009-3374-7
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发表时间:
2010
期刊:
影响因子:
1.9
通讯作者:
K. Nakagawa
K. Nakagawa
中科院分区:
医学4区
文献类型:
--
作者:
Iwabuchi T;Lam MK;Saito K;Obara M;Honda M;Imai Y;Kuroda K.;Nakamura M;K. Nakagawa

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电子顺磁共振(EPR)结合缓慢翻滚模拟用于定义角质层(SC)脂质结构。我们发现,从模拟计算的有序是一个合适的指标,用于评估SC脂质结构。使用涂有氰基丙烯酸酯树脂的玻璃板连续剥离人类志愿者两个部位(掌侧前臂中部和小腿)的SC一到三次。脂肪族自旋探针5-doxylstearic acid(5-DSA)和3 β-doxyl-5 α-cholestane(CHL)用于监测SC有序化。掺入SC中的5-DSA的EPR谱显示第一条带的特征峰。然而,在SC中的CHL的EPR光谱没有显示出明显的差异,为每个条带,除了峰强度。结果表明,CHL不像5-DSA那样容易掺入脂质相中。进行EPR谱的缓慢翻滚模拟以分析详细的脂质结构。5-DSA的模拟结果示出了作为深度的函数的SC排序的值的差异。因此,这些结果沿着仿真分析提供了详细的SC层结构。
Electron paramagnetic resonance (EPR) in conjunction with a slow-tumbling simulation was utilized for defining stratum corneum (SC) lipid structure. We found that ordering calculated from the simulation is an appropriate index for evaluating SC lipids structure. The SC from two sites (mid-volar forearm and lower-leg) of human volunteers was stripped consecutively from one to three times using a glass plate coated with a cyanoacrylate resin. Aliphatic spin probes, 5-doxylstearic acid (5-DSA) and 3β-doxyl-5α-cholestane (CHL), were used to monitor SC ordering. EPR spectrum of 5-DSA incorporated in the SC demonstrated a characteristic peak for the first strip. However, EPR spectra of CHL in the SC did not show a clear difference for each strip, except for the peak intensity. The results imply that CHL is not incorporated into the lipid phase as easily as 5-DSA is. A slow-tumbling simulation of the EPR spectrum was performed to analyze the detailed lipid structure. The simulation results for 5-DSA show differences in values of the SC ordering as a function of depth. Thus, these results along with the simulation analysis provide a detailed SC layer structure.
离体豚鼠背部皮肤、角质层、脱脂皮肤和角质层模型脂质脂质体中烷基自旋标记的电子自旋共振谱分析。
DOI: --
发表时间: 2001
影响因子: 1.7
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发表时间: 1982-01-01
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DOI: 10.1021/j150660a017
发表时间: 1984
期刊: The Journal of Physical Chemistry
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作者:
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DOI: 10.1021/la026813d
发表时间: 2003
期刊: Langmuir : the ACS journal of surfaces and colloids
影响因子: --
作者:
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DOI: --
发表时间: 2006
期刊: Spectrochimica. Acta, Part A, Mol. & Biomol. Spectroscopy 63
影响因子: --
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