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Formulation and Characterisation of a Combination Captopril and Hydrochlorothiazide Microparticulate Dosage Form.
Pharmaceutics ( IF 5.4 ) Pub Date : 2020-07-30 , DOI: 10.3390/pharmaceutics12080712
Mellisa T R Chikukwa 1 , Roderick B Walker 1 , Sandile M M Khamanga 1
Affiliation  

Cardiovascular diseases such as hypertension and cardiac failure in South African children and adolescents are effectively managed long term, using a combination treatment of captopril and hydrochlorothiazide. The majority of commercially available pharmaceutical products are designed for adult patients and require extemporaneous manipulation, prior to administration to paediatric patients. There is a need to develop an age appropriate microparticulate dosing technology that is easy to swallow, dose and alter doses whilst overcoming the pharmacokinetic challenges of short half-life and biphasic pharmacokinetic disposition exhibited by hydrochlorothiazide and captopril. An emulsion solvent evaporation approach using different combinations of polymers was used to manufacture captopril and hydrochlorothiazide microparticles. Design of experiments was used to develop and analyse experimental data, and identifyoptimum formulation and process conditions for the preparation of the microparticles. Characterisation studies to establish encapsulation efficiency, in vitro release, shape, size and morphology of the microparticles were undertaken. The microparticles produced were in the micrometre size range, with an encapsulation efficiency >75% for both hydrochlorothiazide and captopril. The microparticulate technology is able to offer potential resolution to the half-life mediated dosing frequency of captopril as sustained release of the molecule was observed over a 12-h period. The release of hydrochlorothiazide of >80% suggests an improvement in solubility limited dissolution.

中文翻译:

卡托普利和氢氯噻嗪微粒剂型组合的制剂和表征。

长期使用卡托普利和氢氯噻嗪治疗可有效控制南非儿童和青少年的高血压和心力衰竭等心血管疾病。大多数市售药物产品是为成年患者设计的,在施用于儿科患者之前需要临时操作。需要开发适合年龄的微粒剂量给药技术,该技术易于吞咽,定型和改变剂量,同时克服氢氯噻嗪和卡托普利表现出的半衰期短和双相药代动力学的药代动力学挑战。使用聚合物的不同组合的乳液溶剂蒸发方法被用于制造卡托普利和氢氯噻嗪微粒。实验设计用于开发和分析实验数据,并确定用于制备微粒的最佳配方和工艺条件。进行表征研究以建立包封效率,微粒的体外释放,形状,大小和形态。产生的微粒在微米范围内,氢氯噻嗪和卡托普利的包封效率均> 75%。由于在12小时内观察到该分子的持续释放,微粒技术能够为卡托普利的半衰期介导的给药频率提供潜在的解决方案。氢氯噻嗪的释放> 80%提示溶解度有限的溶解度有所改善。并确定用于制备微粒的最佳配方和工艺条件。进行表征研究以建立包封效率,微粒的体外释放,形状,大小和形态。产生的微粒在微米范围内,氢氯噻嗪和卡托普利的包封效率均> 75%。由于在12小时内观察到该分子的持续释放,微粒技术能够为卡托普利的半衰期介导的给药频率提供潜在的解决方案。氢氯噻嗪的释放> 80%提示溶解度有限的溶解度有所改善。并确定用于制备微粒的最佳配方和工艺条件。进行表征研究以建立包封效率,微粒的体外释放,形状,大小和形态。产生的微粒在微米范围内,氢氯噻嗪和卡托普利的包封效率均> 75%。由于在12小时内观察到该分子的持续释放,微粒技术能够为卡托普利的半衰期介导的给药频率提供潜在的解决方案。氢氯噻嗪的释放> 80%,表明溶解度有限的溶解度有所改善。进行了微粒的尺寸和形态。产生的微粒在微米范围内,氢氯噻嗪和卡托普利的包封效率均> 75%。由于在12小时内观察到该分子的持续释放,微粒技术能够为卡托普利的半衰期介导的给药频率提供潜在的解决方案。氢氯噻嗪的释放> 80%提示溶解度有限的溶解度有所改善。进行了微粒的尺寸和形态。产生的微粒在微米范围内,氢氯噻嗪和卡托普利的包封效率均> 75%。由于在12小时内观察到该分子的持续释放,微粒技术能够为卡托普利的半衰期介导的给药频率提供潜在的解决方案。氢氯噻嗪的释放> 80%,表明溶解度有限的溶解度有所改善。由于在12小时内观察到该分子的持续释放,微粒技术能够为卡托普利的半衰期介导的给药频率提供潜在的解决方案。氢氯噻嗪的释放> 80%提示溶解度有限的溶解度有所改善。由于在12小时内观察到该分子的持续释放,微粒技术能够为卡托普利的半衰期介导的给药频率提供潜在的解决方案。氢氯噻嗪的释放> 80%提示溶解度有限的溶解度有所改善。
更新日期:2020-07-30
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