通过注射含有的药膏来有效治疗创伤性脑损伤
Haijun Hu1, Huan Gao2, Kai Wang1
1MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
Acta biomaterialia
|September 5, 2024
概括
一种新的ROS反应性药膏有效地减少了大鼠创伤性脑损伤 (TBI) 后的神经细胞亡和炎症. 这种生物材料通过向受伤部位的活性氧物种 (ROS) 来改善神经功能恢复.
科学领域:
- 生物材料科学 生物材料科学
- 神经科学是一个神经科学.
- 再生医学是一种再生医学.
背景情况:
- 创伤性脑损伤 (TBI) 导致严重残疾,目前是无法治愈的.
- 过度产生的活性氧物种 (ROS) 在TBI中显著恶化二次损伤和神经元亡.
- 针对ROS对于减轻TBI的次要损害和改善结果至关重要.
研究的目的:
- 开发一种对ROS有反应的超分子膏剂,用于TBI治疗.
- 评估ROS反应性膏在减少TBI引起的损伤和促进神经恢复方面的有效性.
主要方法:
- 合成的ROS响应 (R-O) 和非ROS响应 (N-O) 膏,使用带有和酸衍生物的β-环氧化覆盖的高分支聚合物.
- 使用1H核磁共振来表征聚合物结构,并通过rheology和抗氧化试验评估膏的特性.
- 在受控大鼠皮层冲击 (CCI) 模型中评估了体外ROS在BV2细胞中的清除和体内治疗效果.
主要成果:
- 与NO相比,RO膏在体外显示出优越的ROS清除能力.
- 在体内,R-O治疗显著降低了DNA损伤,亡,神经炎症 (激活的星球细胞/微细胞,促炎细胞因子),并在受伤的大脑区域增加了M2/M1巨细胞比率.
- R-O膏促进了双皮质素 (DCX) 表达,改善了组织结构完整性,并在TBI后增强了神经功能恢复.
结论:
- 开发的ROS响应性超分子膏有效向ROS,减轻TBI中的二次损伤.
- 这种自我适应的生物材料降低了神经炎症,并在TBI大鼠模型中促进了神经恢复.
- R-O膏代表了一种有前途的治疗策略,用于管理病态微环境并改善TBI结果.
更多相关视频
04:47Author Spotlight: Optimizing Rodent Models for Investigating the Mechanisms and Rehabilitation in Repeated Mild Traumatic Brain Injury
Published on: April 19, 2024
421
04:02Author Spotlight: Developing Precise and Clinically Relevant Models for Studying Secondary Degeneration in Traumatic Optic Neuropathy
Published on: November 29, 2024
1.1K
相关概念视频
01:14Prevention of Further Absorption of Poison
1.4K
In cases of acute poisoning, the primary objective is to prevent further absorption of the toxic substance into the body. Immediate interventions using various decontamination techniques targeting the gastrointestinal (GI) tract can achieve this. Decontamination is crucial to prevent poison from entering the systemic circulation, which involves washing affected areas with water and mild soap and removing contaminated clothing. Once external decontamination is done, attention must be turned to...
1.4K
01:29Drug Delivery: Parenteral Route
2.9K
The parenteral route is a critical method of drug administration. It delivers compounds directly into the systemic circulation and bypasses the gastrointestinal tract. This approach is particularly advantageous for drugs that exhibit poor absorption or instability when administered orally.
There are three primary parenteral routes: intravenous (IV), intramuscular (IM), and subcutaneous (SC). The IV route introduces the drug directly into the bloodstream, ensuring immediate action. The IM route...
There are three primary parenteral routes: intravenous (IV), intramuscular (IM), and subcutaneous (SC). The IV route introduces the drug directly into the bloodstream, ensuring immediate action. The IM route...
2.9K
01:26Pharmaceutical Poisoning: Treatment Strategies
286
Treatment strategies for poisoning are a critical aspect of emergency medicine, focusing on preventing the absorption of toxins and enhancing their elimination. When a poisoning incident occurs, the first response is to halt exposure and decontaminate the patient, particularly through gastrointestinal (GI) methods if the poison was ingested.Gastrointestinal Decontamination Techniques:Activated charcoal is the cornerstone of GI decontamination. It works through adsorption, binding the toxin to...
286