Long-acting acid-sensitive ketal-linked dexamethasone microcrystals for treating experimental autoimmune uveitis.

Long-acting acid-sensitive ketal-linked dexamethasone microcrystals for treating experimental autoimmune uveitis.
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长效酸敏感缩酮连接地塞米松微晶治疗实验性自身免疫性葡萄膜炎

DOI:
10.1063/5.0118311
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发表时间:
2022-12
期刊:
影响因子:
6
通讯作者:
--
中科院分区:
工程技术2区
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--
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一段时间以来,皮质类固醇已被用作非感染性葡萄膜炎局部治疗的一线药物,但眼部生物利用度差和滴眼液的快速清除需要频繁给药,降低了患者的依从性。在这项研究中,我们使用了一种酸敏感的硬脂酸-缩酮-地塞米松前药微晶体(SKD MC),它在控制大鼠葡萄膜炎炎症方面始终安全有效。我们使用大鼠实验性自身免疫性葡萄膜炎(EAU)模型,以评估SKD MCs与地塞米松磷酸钠注射液或磷酸盐缓冲盐水相比在临床表现、分子生物学、病理组织学和视觉电生理方面的作用。SKD MCs显著降低了EAU的炎症,提高了抑制炎性细胞因子和保护视网膜功能的能力,并显著降低了视网膜小胶质细胞活化,在整个治疗过程中没有眼内压升高。我们的结果表明,SKD MC制剂有望成为治疗非感染性葡萄膜炎和其他潜在眼部炎症性疾病的新策略。
Corticosteroids have for some time been used as first-line drugs for the topical treatment of noninfectious uveitis, but poor ocular bioavailability and the rapid clearance of eye drops necessitate frequent dosing, reducing patient compliance. In this study, we used an acid-sensitive stearoxyl-ketal-dexamethasone pro-drug microcrystals (SKD MCs), which is consistently safe and effective in the control of uveitis inflammation in rats. We used a rat model of experimental autoimmune uveitis (EAU) to evaluate the effects of SKD MCs in terms of clinical manifestations, molecular biology, pathological histology, and visual electrophysiology compared to dexamethasone sodium phosphate injection or phosphate-buffered saline. SKD MCs significantly reduced inflammation in EAU, improved the ability to suppress inflammatory cytokines and to protect retinal function, and significantly reduced retinal microglia activation, with no increase in intraocular pressure throughout the treatment. Our results indicate that the SKD MCs formulation holds promise as a new strategy for the treatment of noninfectious uveitis and potentially other ocular inflammatory diseases.
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