相关实验视频

Updated: Apr 11, 2026

Measuring and Modeling Contractile Drying in Human Stratum Corneum

Measuring and Modeling Contractile Drying in Human Stratum Corneum

Published on: March 1, 2017

盐水对人类ex vivo层状角质的机械作用的量化

L Moogan¹, G K German¹

¹Department of Biomedical Engineering, Binghamton University, 4400 Vestal Parkway East, Binghamton, NY, 13902, USA.

Journal of the mechanical behavior of biomedical materials

|April 26, 2025

概括

与纯水相比,盐水显著破坏皮肤屏障,增加皮肤的刚性和干燥压力. 这就解释了海洋游泳后的干燥,紧张的感觉.

科学领域:

皮肤病学皮肤病学
材料科学材料科学材料科学
生物物理学的生物物理.

背景情况:

角层 (SC) 是皮肤的主要屏障,对于防止水分流失和防止环境损害至关重要.
脊椎屏障的降解会导致皮肤间的水分流失 (TEWL),化和潜在的皮肤骨折的增加.
事证据表明,在盐水中游泳会导致干燥,紧张的皮肤,但科学依据尚不清楚.

研究的目的:

研究盐水对ex vivo角层的机械性能和干燥行为的影响.
为了比较盐水与纯水对SC屏障功能的影响.
为盐水暴露后感知到的皮肤干燥提供科学解释.

主要方法:

使用一种成熟的高通量机械方法来测试ex vivo角层 (SC) 样本.
用盐水处理了SC样本,并将结果与用脱离离子纯水处理的样本进行了比较.
在SC样本中测量了弹性模量 (E_SC) 和干燥应力积累 (P_SC).

主要成果:

与脱离离子水 (E_SC=2.75±0.89 MPa) 相比,盐水处理导致弹性模量显著更高 (E_SC=5.13±1.20 MPa).
在暴露于盐水 (P_SC=208.5±24.0 kPa) 和纯水 (P_SC=91.23±25.55 kPa) 的SC样本中,干燥应力显著增加.
统计分析证实了显著的差异 (p=0.018对于E_SC,p=0.003对于P_SC).

结论:

暴露于盐水会显著改变角层的机械性能和干燥行为.
由于暴露于盐水中的SC屏障功能的观察到的变化会导致皮肤变质.
这项研究为海洋游泳后皮肤干燥和紧张的常见经历提供了科学依据.

更多相关视频

Preparation of Keratin Hydrolysate from Chicken Feathers and Its Application in Cosmetics

Preparation of Keratin Hydrolysate from Chicken Feathers and Its Application in Cosmetics

Published on: November 27, 2017

Effect of Artificial Tear Formulations on the Metabolic Activity of Human Corneal Epithelial Cells after Exposure to Desiccation

Effect of Artificial Tear Formulations on the Metabolic Activity of Human Corneal Epithelial Cells after Exposure to Desiccation

Published on: May 2, 2020

相关概念视频

Responses to Salt Stress

Responses to Salt Stress

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.

Cells of the Epidermis

Cells of the Epidermis

The epidermis is made of four or five layers of epithelial cells, depending on its location in the body. From deep to superficial, these layers are the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum.
The cells in all these layers except the stratum basale are called keratinocytes, a type of cell that manufactures and stores the protein keratin. The keratinocytes in the stratum corneum are dead and regularly slough away, being replaced by cells from...