验证Otto:一个弗朗茨扩散细胞自取样器,以自动化体外透研究
Hayley Ka Yee Chan1, Liam Archbold1, Wing Man Lau2
1School of Pharmacy, Newcastle University, King George VI Building, Newcastle upon Tyne NE1 7RU, United Kingdom.
Journal of pharmaceutical sciences
|May 15, 2025
概括
一个新的自动采样器Otto自动化了弗朗茨扩散细胞 (FDC) 的采样和重新填充. 这种自动化系统比手工方法提高了体外药物透研究的一致性和数据质量.
科学领域:
- 药理动力学和药物输送方法
- 分析化学 分析化学
- 生物医学工程 生物医学工程
背景情况:
- 弗朗茨扩散细胞 (FDC) 是用于体外药物透研究的标准装置.
- 传统的FDC方法需要手动采样和重新填充,导致调度挑战,时间效率低下和劳动强度.
- 需要自动化来提高基于FDC的透试验的可靠性和吞吐量.
研究的目的:
- 开发和验证一个名为Otto的自动取样和补充系统,用于改装通用Franz扩散电池.
- 为了评估Otto自动采样器在体积一致性,准确性和无人操作方面的性能.
- 评估自动抽样对体外药物透数据质量的影响.
主要方法:
- 开发了Otto自动采样器,旨在自动取样和重新填充FDC.
- 使用甲蓝 (MB) 作为模型药物的验证,以确定样本体积的一致性和准确性.
- 在样本体积变化和药物恢复方面,将奥托的性能与手动采样进行比较.
- 在一个24小时的体外布洛芬透研究中应用奥托,收集多达100个无人监督的样本.
主要成果:
- 与手动操作 (CV = 7.4%) 相比,奥托显示出更高的样本体积一致性 (CV = 3.2%).
- 在多个循环中测量到的甲蓝的量准确地反映了理论和手工确定量的量.
- 自动采样器成功地在24小时内收集了无数个无人监督的样本,并与标准的分析工作流程集成.
- 奥托的自动,连续采样在ibuprofen透性研究期间有效地维持了水槽条件.
结论:
- 奥托自动采样器为自动化弗朗茨扩散细胞透研究提供了具有成本效益,可靠和高性能的解决方案.
- 自动抽样显著提高了体外药物透数据的一致性和质量.
- 奥托使无人监护的长期监测成为可能,提高了药物输送研究中的实验效率和数据完整性.
相关概念视频
In Vitro Drug Dissolution: Compendial Testing Models II
161
Various dissolution methods are utilized to assess a drug’s dissolution rate, including the flow-through cell, paddle-over-disk, cylinder, and reciprocating disk methods.The flow-through cell apparatus (USP (United States Pharmacopeia) method 4) comprises a reservoir for the dissolution medium and a pump that propels the medium through the cell containing the test sample. This method is crucial for assessing modified-release dosage forms with minimally soluble active ingredients,...
161
In Vitro Drug Dissolution: Compendial Testing Models I
163
Compendial dissolution methods are standardized procedures defined by pharmacopeias to evaluate the rate at which a drug dissolves in a specific medium. These methods ensure batch-to-batch consistency, enable quality control, and support the prediction of drug bioavailability. They are critical for both immediate and modified-release drug products.The apparatuses used for dissolution testing differ in their design and mechanical function, but all aim to simulate the physiological environment of...
163
In Vitro Drug Dissolution: Alternative Methods
154
Alternative drug dissolution methods include the rotating bottle, intrinsic dissolution test, peristalsis, and the Franz diffusion cell method. The rotating bottle method involves meticulously rotating tightly capped controlled-release beads in a temperature-controlled bath. Periodic decanting of samples allows for residue assay, followed by refilling with fresh medium and testing at various pH levels to emulate the gastrointestinal tract conditions.In contrast, the intrinsic dissolution test...
154
Methods for Studying Drug Absorption: In vitro
524
In vitro experiments are crucial for understanding the transport and absorption of drugs through biological materials. These studies employ varied methods such as the diffusion cell method, the everted sac technique, and the everted ring technique.
The diffusion cell method uses a two-compartment cell, including a donor compartment with the drug solution, which simulates the environment where the drug is applied, and a receptor compartment with a buffer solution, which simulates the environment...
The diffusion cell method uses a two-compartment cell, including a donor compartment with the drug solution, which simulates the environment where the drug is applied, and a receptor compartment with a buffer solution, which simulates the environment...
524
Methods for Studying Drug Absorption: In situ
570
In situ experiments, such as the Doluisio method and Single-Pass Perfusion technique, provide critical insights into drug uptake by simulating in vivo conditions for drug absorption.
The Doluisio method involves perfusing a prepared segment of a rat's small intestine with a solution of radiolabeled drug and a non-absorbable marker. This helps to differentiate between absorbed and non-absorbed drug concentrations. The intestinal segment is connected at both ends using tubing and syringes,...
The Doluisio method involves perfusing a prepared segment of a rat's small intestine with a solution of radiolabeled drug and a non-absorbable marker. This helps to differentiate between absorbed and non-absorbed drug concentrations. The intestinal segment is connected at both ends using tubing and syringes,...
570


