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Injection of Hydrogel Biomaterial Scaffolds to The Brain After Stroke
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克韦尔含有素的天性伊米达酸框架-8纳米颗粒通过嵌入玻利醇的氨酸水凝用于缺血性中风治疗
Yawen Yu1, Yuxuan Zou2, Mingyan Yang1
1School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, 264005, PR China.
International journal of biological macromolecules
|December 22, 2025
概括
这项研究开发了一种新的鼻内水凝系统,使用醇和氨酸载荷的纳米颗粒来治疗缺血性中风. 该系统有效地向大脑输送氨酸,减少炎症并改善大鼠的神经恢复.
科学领域:
- 神经科学是一个神经科学.
- 材料科学 材料科学 材料科学
- 药理学 药理学是指药理学的学科.
背景情况:
- 缺血性中风 (IS) 由于复杂的病理和有限的治疗选择而带来了重大挑战.
- 奎尔素 (QC) 提供抗氧化和抗炎功效,但其生物利用性较差,并穿透血脑屏障 (BBB).
- 有效的药物输送到大脑仍然是治疗IS的主要障碍.
研究的目的:
- 开发一种用于协同治疗IS的鼻内 (IN) 给药系统.
- 为了创建嵌入玻利 (Bo) 的热敏水凝,提供带有 QC 的焦化物 imidazolate framework-8 (ZIF-8) 纳米颗粒 (QC@ZIF-8 NPs).
- 评估开发的系统的神经保护,抗炎和抗氧化特性.
主要方法:
- 合成均的,对pH反应的QC@ZIF-8NP.
- 准备温度敏感的Bo/QC@ZIF-8-Gel,具有生物相容性和持续释放.
- 在体外评估使用MTT,LDH,ROS,JC-1,免疫光和ELISA试验.
- 在老鼠中的药理动力学研究和中脑动脉封闭 (MCAO) 鼠标模型中的体内成像.
主要成果:
- Bo/QC@ZIF-8-Gel有效地清除了活性氧物种 (ROS) 并减少了OGD/R诱导的细胞损伤.
- 该系统通过促进M2微质极化,显著降低了促炎因素 (TNF-α,IL-1β,IL-6).
- 药理动力学研究证实了醇在通过IN给药来增强大脑药物缩中的作用.
- 在体内研究表明,在MCAO大鼠中,脑梗塞体积减少,神经功能改善,神经元存活率增加,脑炎症受抑制.
结论:
- 在IS治疗中,Bo/QC@ZIF-8-Gel表现出显著的神经保护,抗炎和抗氧化作用.
- 鼻内水凝系统有助于有效地向大脑输送奎尔丁.
- 这种开发的系统代表了对缺血性中风的有希望的治疗策略.
相关概念视频
Ischemic Stroke l: Introduction
Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
Ischemic Stroke ll: Pathophysiology
An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...

