脱细胞化带作为支架,以支持全厚伤口的愈合
Albina A Kondratenko1,2, Dmitry V Tovpeko1, Daniil A Volov1
1Research Department of Biomedical Research of the Research Center, S.M. Kirov Military Medical Academy, 194044 St. Petersburg, Russia.
Biomimetics (Basel, Switzerland)
|July 26, 2024
概括
这项研究开发了一种可生物降解的脚手架,由脱细胞化的人类带 (UC-脚手架) 制成,用于伤口愈合. 在小鼠中,UC支架有效促进细胞生长和完整的伤口上皮质化.
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:
- 带的细胞外基质 (ECM) 具有再生性质,并且没有与年龄相关的退化.
- 开发先进的伤口愈合材料对于有效的组织修复至关重要.
研究的目的:
- 从一个脱细胞化的人类带 (UC-脚手架) 创建一个可生物降解的脚手架.
- 评估UC脚手架在治愈全厚皮肤伤口方面的潜力.
主要方法:
- 使用0.05%的二硫酸盐去细胞化人类带.
- 形态,组成 (免疫染,FTIR) 和细胞相互作用分析 (LIVE/DEAD测定).
- 在小鼠模型中对生物降解,局部反应和伤口愈合的体内评估.
主要成果:
- 脱细胞化有效地去除了细胞,同时保留了ECM成分,如 I 和 IV 类型的原,TGF-β3,VEGF 和纤维素.
- 该UC-脚手架显示了受控的生物降解,氨基酶的稳定性和显著的胀 (1617 ± 120%).
- 在体内研究表明,在没有不良囊形成和完整的伤口上皮质化的情况下,逐渐吸收.
结论:
- 开发的UC支架是用于伤口愈合应用的有希望的生物材料.
- 脚手架的组成和生物相容性支持其在再生医学中的潜力.
相关概念视频
Inflammatory Response II: Inflammatory Exudate and Tissue Repair
8.4K
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...
8.4K
Overview of Regeneration and Repair
4.8K
Regeneration and repair processes are critical in healing damages caused by injury, disease, and aging. In regeneration, the damaged tissue is entirely replaced with new growth that restores the original architecture and function. In contrast, tissue repair usually results in a fixed tissue architecture involving scar formation. Scars generally do not reestablish tissue function and may also exhibit structural abnormalities at the injury site.
Regeneration
All animals have varying degrees of...
Regeneration
All animals have varying degrees of...
4.8K
Phases of Wound Repair
8.0K
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...
8.0K
Healing I: Introduction
14
Healing is the physiological process by which the body restores the integrity and function of damaged tissues following injury. It involves a coordinated interplay of cellular proliferation, extracellular matrix remodeling, and growth factor signaling. The extent and nature of the tissue damage determine whether healing occurs by resolution, regeneration, or replacement.ResolutionResolution represents the most complete form of healing, occurring when the injury is minimal and tissue...
14
Healing II: Complications
37
Complications during healing arise when tissue repair is altered by local or systemic factors. These changes involve abnormal collagen deposition, altered biomechanics, and reduced vascular supply, impairing restoration of normal structure and function.Loss of FunctionScar tissue differs significantly from the original tissue it replaces. In the skin, fibrosis lacks adnexal structures such as hair follicles, sebaceous glands, and sweat glands. Their absence reduces tactile sensitivity, impairs...
37


