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相关概念视频

Papillary Dermis01:11

Papillary Dermis

Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
Papillary Layer
The papillary layer is made of loose, areolar connective tissue, which means the collagen and...
Layers of the Epidermis01:21

Layers of the Epidermis

The epidermis, the outermost layer of the skin, is composed of several distinct layers. From deep to superficial, the layers of the epidermis are as follows:
Stratum Basale
Stratum basale, also known as the stratum germinativum, is the deepest layer of the epidermis. It is composed of a single layer of actively dividing cells called basal cells or basal keratinocytes. These cells constantly undergo cell division to replenish the upper layers of the epidermis. Additionally, melanocytes, which...

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相关实验视频

Updated: Jun 29, 2026

Generation of a Three-dimensional Full Thickness Skin Equivalent and Automated Wounding
08:35

Generation of a Three-dimensional Full Thickness Skin Equivalent and Automated Wounding

Published on: February 26, 2015

在体外糖化工程皮肤的超结构分析.

Kimberly Denman1, Vighter Iberi2, Yuri Roiter2

  • 1Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA.

Journal of cosmetic dermatology
|February 20, 2026
PubMed
概括

这项研究表明,体外皮肤糖化在工程皮肤模型中迅速产生纹和黄色. 这种方法有助于评估皮肤护理产品的抗衰老作用.

关键词:
原子力显微镜的原子力显微镜.糖化糖化是什么?糖化糖化是什么?机械学 机械学 机械学扫描传输电子显微镜扫描传输电子显微镜皮肤 皮肤 皮肤

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Building Up Skin Models for Numerous Applications - from Two-Dimensional (2D) Monoculture to Three-Dimensional (3D) Multiculture
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Building Up Skin Models for Numerous Applications - from Two-Dimensional (2D) Monoculture to Three-Dimensional (3D) Multiculture

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Published on: October 20, 2023

科学领域:

  • 生物材料科学 生物材料科学
  • 皮肤病学 皮肤病学
  • 衰老研究研究 衰老研究

背景情况:

  • 皮肤老化会导致纹,变黄和光泽的丧失.
  • 先进的糖化最终产品 (AGEs) 是皮肤衰老的主要原因.
  • 需要体外模型来研究皮肤糖化效应.

研究的目的:

  • 为了检查体外糖化如何影响工程皮肤模型的特性.
  • 建立一种快速的方法来回顾皮肤糖化效应.
  • 为评估抗衰老护肤产品提供一个平台.

主要方法:

  • 工程化皮肤模型 (MatTek EpiDerm) 在体外使用甘氨酸进行了糖化.
  • 分析了光度的变化,细胞/矩阵形态和表面特性.
  • 免疫组织化学,STEM和AFM被用于评估糖化和超结构.

主要成果:

  • 糖化减少了皮肤的光泽,增加了黄色.
  • 细胞和矩阵形态被破坏,粗度和模量增加.
  • 观察到的效果模仿了自然和人工老化皮肤的效果.

结论:

  • 这种方法提供了一种快速简单的方法,可以在模型皮肤中诱导糖化效应.
  • 该模型可用于测试皮肤护理产品减轻糖化诱导的衰老.
  • 这项研究推进了体外皮肤衰老研究和产品开发.