素纤维用于伤口愈合
Jubair Ahmed1, Ece Guler2,3, Gul Sinemcan Ozcan4
1Department of Mechanical Engineering, University College London, London WC1E 7JE, UK.
Journal of the Royal Society, Interface
|July 26, 2023
概括
这项研究开发了含有素的聚烯酸乙烯 (PCL) 纤维,用于先进的伤口愈合. 这些生物相容纤维显著加速了伤口的关闭,并减少了糖尿病大鼠的炎症.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 组织工程是组织工程.
背景情况:
- 牛奶中含有的蛋白 (casein) 越来越多地被用于健康补充剂.
- 聚烯酸乙烯 (PCL) 是一种可生物降解的聚,具有潜在的生物医学应用.
研究的目的:
- 在PCL矩阵中开发新型带状纤维,在PCL矩阵中包含高度 (50%重量) 的素.
- 评估这些含有素的PCL纤维在糖尿病老鼠模型中促进伤口愈合的有效性.
主要方法:
- 制造含有素的PCL纤维,平均直径为1.4 ± 0.5μm.
- 在实验室中评估小鼠纤维细胞活性的细胞毒性,以确定细胞毒性.
- 在体内进行了为期14天的伤口愈合试验,比较了素-PCL纤维,纯PCL纤维和没有治疗的糖尿病大鼠.
- 组织学分析和炎症标志物 (TNF-α,TGF-β,IL-1β,NF-κB,IL-6) 的测量.
主要成果:
- 载有素的PCL纤维具有较低的细胞毒性,细胞活力超过90%.
- 与对照组相比,在用素载有纤维治疗的老鼠中观察到伤口愈合的显著加速.
- 组织学分析显示,增强了颗粒组织的形成和卵泡的再生.
- 在含有素的纤维组中检测到降低了促炎细胞因子 (TNF-α,TGF-β,IL-1β,NF-κB,IL-6) 的水平.
结论:
- 含有素的PCL纤维代表了先进的伤口愈合的经济和简单方法.
- 加上素,通过调节炎症反应,促进了更好的愈合过程.
- 这些发现凸显了素基生物材料在再生医学中的治疗潜力.
相关概念视频
Phases of Wound Repair
6.1K
Following injury, the integrity of the injured tissues must be reestablished. For example, in skin tissue, wound repair involves coordination among resident skin cells, blood mononuclear cells, extracellular matrix, growth factors, and cytokines to complete the healing cascade.
Formation of Blood Clot
In case of deep injuries, trauma to blood vessels results in blood loss. In the meantime, phospholipids released from the ruptured endothelial cellular membrane are converted into arachidonic...
Formation of Blood Clot
In case of deep injuries, trauma to blood vessels results in blood loss. In the meantime, phospholipids released from the ruptured endothelial cellular membrane are converted into arachidonic...
6.1K
Inflammatory Response II: Inflammatory Exudate and Tissue Repair
5.1K
The immune system's inflammatory response destroys the invading pathogen, permitting the tissue to heal. The changes during the cellular and vascular stages allow exudate formation at the site of inflammation. The inflammatory exudate released from the wound has high protein content and a specific gravity above 1.020.
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the...
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the...
5.1K
Clinical Applications of Epidermal Stem Cells
2.7K
Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own...
2.7K
Introduction to Fibroblasts
3.1K
Rudolph Virchow discovered spindle-shaped cells called fibroblasts in 1858. Inactive fibroblasts, called fibrocytes, become activated by various stimuli, such as growth factors and inflammatory cytokines. Activated fibroblasts play a crucial role in wound healing, inflammation, formation of new blood vessels, and cancer progression. Uncontrolled activation of fibroblasts results in fibrosis, the excess deposition of fibrous tissue, which can lead to scarring and affect normal organs. This...
3.1K


