The complement cascade at the Utah microelectrode-tissue interface.

The complement cascade at the Utah microelectrode-tissue interface.
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犹他州微电极组织接口的补体级联反应。

DOI:
10.1016/j.biomaterials.2020.120583
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发表时间:
2021-01
期刊:
影响因子:
14
通讯作者:
Prasad A
Prasad A
中科院分区:
工程技术1区
文献类型:
--
作者:
Bennett C;Álvarez-Ciara A;Franklin M;Dietrich WD;Prasad A

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由于植入材料与细胞微环境之间缺乏生物相容性,植入中枢神经系统(CNS)内的器械会发生组织反应。研究认为血脑屏障破坏、炎症和氧化应激是导致电极记录失败的主要因素。补体级联是先天免疫的一部分,其重点是识别和靶向异物;然而,其在神经植入物中的作用基本上是未知的。在这项研究中,我们将一个非功能性的4×4犹他州微电极阵列(UEA)植入体感皮层,并通过联合基因和免疫组化定量研究了急性(48小时),亚急性(1周)和早期慢性(4周)时间点的补体级联反应。本研究的结果证明了电极-组织界面处补体级联的激活和持续,说明了通过补体级联调节异物反应的治疗潜力。
Devices implanted within the central nervous system (CNS) are subjected to tissue reactivity due to the lack of biocompatibility between implanted material and the cells’ microenvironment. Studies have attributed blood-brain barrier disruption, inflammation, and oxidative stress as main contributing factors that lead to electrode recording failure. The complement cascade is a part of the innate immunity that focuses on recognizing and targeting foreign objects; however, its role in the context of neural implants is substantially unknown. In this study, we implanted a non-functional 4×4 Utah microelectrode array (UEA) into the somatosensory cortex and studied the complement cascade via combined gene and immunohistochemistry quantification at acute (48-hour), sub-acute (1-week), and early chronic (4-weeks) time points. The results of this study demonstrate the activation and continuation of the complement cascade at the electrode-tissue interface, illustrating the therapeutic potential of modulating the foreign body response via the complement cascade.
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发表时间: 2016-04
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