Sci Rep:含姜黄的眼药水,或能治疗青光眼

2018-07-29 佚名 中国生物技术网

由伦敦大学学院(UCL)和帝国理工学院领导的一项新研究发现,姜黄衍生物的滴眼液可用于治疗青光眼早期阶段。

由伦敦大学学院(UCL)和帝国理工学院领导的一项新研究发现,姜黄衍生物的滴眼液可用于治疗青光眼早期阶段。

这篇论文近日发表在《Scientific Reports》上,研究人员描述了一种新方法,利用滴眼液将姜黄素(从姜黄中提取)直接滴到眼睛上,克服了姜黄素溶解性差的问题。

研究团队发现,这种滴眼液可以减少大鼠视网膜细胞的损失,而视网膜细胞损失被认为是青光眼的早期症状。他们还在研究如何将眼药水用作各种疾病的诊断工具。

研究通讯作者,伦敦大学眼科研究所,帝国理工学院Francesca Cordeiro教授说:“姜黄素是一种非常令人兴奋的化合物,它在检测和治疗与多种眼睛和大脑疾病相关的神经退行性病变方面具有潜力,如青光眼和阿尔兹海默症。因此,在滴眼液中添加姜黄素很可能帮到数百万人。”

青光眼是一种眼科疾病,目前影响全世界超过6000万人,其中有十分之一的人会出现不可逆转的失明。这种疾病的主要原因是视网膜神经节细胞损失,视网膜神经节细胞是一种位于视网膜表面附近的神经元。目前还没有能够及早阻止这种细胞损失的方法,因此这是青光眼研究领域的重点。

先前有研究证明,口服姜黄素能保护视网膜神经节细胞。在目前的这项研究中,研究人员试图寻找一种更可靠的方法来施用姜黄素。口服很困难,因为姜黄素溶解性差,所以它很难溶解并被吸收到血液中,而且患者需要大量服药(每天24片),这可能会引起肠胃道副作用。

为此,研究团队开发出一种新型纳米载体,姜黄素被包含在与稳定剂结合的表面活性剂中。这两种物质对人体都是安全的,而且已经存在于现有的眼科产品中。纳米载体可用于滴眼液,它能够比其他正在开发中的产品负载更多的姜黄素,使药物的可溶解性提高40万倍,并将姜黄素直接作用于眼睛,而非通过身体。

研究人员最初在用于建立青光眼模型的细胞上对该产品进行测试,之后他们对患有眼部疾病(与视网膜神经节细胞损失相关)的大鼠进行了试验。

研究人员每天两次对大鼠使用这种眼药水,三周之后,相比于对照组,它们的视网膜神经节细胞损失程度显着减少,而且大鼠对这种治疗方法耐受性良好,没有出现眼部刺激和炎症。

发现了这种投递姜黄素的有效方法之后,研究人员们希望它可以被用于诊断阿尔兹海默症,因为已知姜黄素能与β-淀粉样蛋白结合,并且可以利用荧光剂检测到存在于视网膜中的恶性蛋白质。

研究第一作者,伦敦大学眼科研究所,帝国理工学院的Ben Davis博士说:“我们现在正在研究利用这种滴眼液诊断用途以及其他可视化视网膜的方法,因为眼部检查可以通过简单的非侵入性检测来检测神经变性迹象。”

Cordeiro教授补充说:“随着人类寿命增长,青光眼和阿尔兹海默症等疾病也将会越来越多。我们相信,这项发现能够为这些饱受此类疾病困扰的人们提供帮助。”

原始出处:Davis BM1, Pahlitzsch M1, Guo L1, et al. Topical Curcumin Nanocarriers are Neuroprotective in Eye Disease. Sci Rep. 2018 Jul 23;8(1):11066.

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    2023-03-06 lifestar 来自上海
    展开1条回复
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    2018-08-04 liumin1987

    姜黄治疗青光眼。

    0

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    2018-07-30 1ddf0692m34(暂无匿称)

    学习了,长知识

    0

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    2018-07-29 医者仁心5538

    多吃姜有用吗?

    0

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