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首页> 外文期刊>European journal of pharmaceutics and biopharmaceutics: official journal of Arbeitsgemeinschaft fuer Pharmazeutische Verfahrenstechnik e.V >The ophthalmic lyophilisate carrier system (OLCS): development of a novel dosage form, freeze-drying technique, and in vitro quality control tests.
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The ophthalmic lyophilisate carrier system (OLCS): development of a novel dosage form, freeze-drying technique, and in vitro quality control tests.

机译:眼科冻干剂载体系统(OLCS):开发新型剂型,冻干技术和体外质量控制测试。

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摘要

The ophthalmic lyophilisate carrier system (OLCS) is a novel dosage form for delivery of pharmacologically active ingredients or other substances improving the structure of the tear film to the eye. A drop of lyophilisate containing the drug and bulk forming water-soluble or swelling excipients is attached to a flexible hydrophobic carrier. Placebo OLCS and OLCS containing several drugs commonly used in ophthalmology were compared to conventional eye drops containing the same ingredients. A novel lyophilization procedure for the production of this dosage form is described, which allows stricter control of the freezing and drying conditions and shortens the production cycle by at least an order of magnitude. In clinical studies it was found that OLCS are easy to administer and well tolerated if the force of adhesion between lyophilisates and carrier strips and the structural firmness of the lyophilisates themselves are well controlled. These parameters are critical for convenient administration and complete delivery of the dose of active ingredients incorporated, therefore suitable in vitro tests were developed with which their values can be determined for the purpose of process validation. A study of fluorescein OLCS in humans indicated that concentration profiles in the cornea and anterior chamber are significantly higher than after administration of equal doses of the diagnostic in conventional eye drops.
机译:眼科冻干剂载体系统(OLCS)是一种新颖的剂型,用于递送药理学活性成分或其他改善眼泪膜结构的物质。含有药物和大量形成的水溶性或溶胀性赋形剂的冻干剂滴与柔性疏水载体相连。将安慰剂OLCS和含有几种眼科常用药物的OLCS与含有相同成分的常规滴眼剂进行了比较。描述了用于生产该剂型的新型冻干程序,其允许严格控制冷冻和干燥条件并将生产周期缩短至少一个数量级。在临床研究中发现,如果冻干物和载体条之间的粘附力和冻干物本身的结构牢固性得到良好控制,则OLCS易于给药并且耐受性良好。这些参数对方便给药和完全递送一定剂量的活性成分至关重要,因此开发了合适​​的体外测试,可以通过这些测试确定其值以进行过程验证。对人类荧光素OLCS的研究表明,角膜和前房的浓度曲线明显高于常规眼药水中等剂量诊断剂后的浓度曲线。

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