首页> 美国卫生研究院文献>Wiley-Blackwell Online Open >Comparison of the pharmacokinetics of an oral extended‐release capsule formulation of carbidopa‐levodopa (IPX066) with immediate‐release carbidopa‐levodopa (Sinemet®) sustained‐release carbidopa‐levodopa (Sinemet® CR) and carbidopa‐levodopa‐entacapone (Stalevo®)
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Comparison of the pharmacokinetics of an oral extended‐release capsule formulation of carbidopa‐levodopa (IPX066) with immediate‐release carbidopa‐levodopa (Sinemet®) sustained‐release carbidopa‐levodopa (Sinemet® CR) and carbidopa‐levodopa‐entacapone (Stalevo®)

机译:口服卡比多巴-左旋多巴(IPX066)与速释卡比多巴-左旋多巴(Sinemet®)缓释卡比多巴-左旋多巴(Sinemet®CR)和卡比多巴-左旋多巴-entacapone( Stalevo®)

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摘要

IPX066 (extended‐release carbidopa‐levodopa [ER CD‐LD]) is an oral extended‐release capsule formulation of carbidopa and levodopa. The single‐dose pharmacokinetics of ER CD‐LD (as 2 capsules; total dose, 97.5 mg‐390 mg CD‐LD) versus immediate‐release (IR) CD‐LD (25 mg‐100 mg), sustained‐release (CR) CD‐LD (25 mg‐100 mg), and CD‐LD‐entacapone (25 mg‐100 mg‐200 mg) was evaluated in healthy subjects. Following IR dosing, LD reached peak concentrations (Cmax) at 1 hour; LD concentrations then decreased rapidly and were less than 10% of peak by 5 hours. With CR CD‐LD and CD‐LD‐entacapone, LD Cmax occurred at 1.5 hours, and concentrations were less than 10% of peak by 6.3 and 7.5 hours, respectively. The initial increase in LD concentration was similar between ER CD‐LD and IR CD‐LD and faster than for CR CD‐LD and CD‐LD‐entacapone. LD concentrations from ER CD­­‐LD were sustained for approximately 5 hours and did not decrease to 10% of peak until 10.1 hours. Dose‐normalized LD Cmax values for ER CD‐LD were significantly lower (P< .05) than for the other CD‐LD products. Bioavailability of LD from ER CD‐LD was 83.5%, 78.3%, and 58.8% relative to IR CD‐LD, CR CD‐LD, and CD‐LD‐entacapone, respectively.
机译:IPX066(卡比多巴-左旋多巴缓释片[ER CD-LD])是卡比多巴和左旋多巴的口服缓释胶囊制剂。 ER CD‐LD的单剂量药代动力学(作为2胶囊;总剂量为97.5 mg‐390 immediatemg CD‐LD)与即释(IR)CD‐LD(25 mg-100 mg),缓释(CR) )在健康受试者中评估了CD-LD(25μg-100mg/ mg)和CD-LD-萘醌(25μg-100mg/ 200mg)。 IR给药后,LD在1小时达到峰值浓度(Cmax)。然后,LD浓度迅速下降,到5小时不到峰值的10%。对于CR CD‐LD和CD‐LD‐entacapone,LD Cmax在1.5小时出现,浓度分别不到6.3和7.5小时的峰值的10%。 ER CD‐LD和IR CD‐LD之间的LD浓度初始增加相似,并且比CR CD‐LD和CD‐LD-entacapone快。 ER CD ­­- LD的LD浓度持续约5小时,直到10.1小时才下降到峰值的10%。 ER CD‐LD的剂量标准化LD Cmax值显着低于其他CD‐LD产品(P <.05)。相对于IR CD‐LD,CR CD‐LD和CD‐LD‐entacapone,ER CD‐LD的LD生物利用度分别为83.5%,78.3%和58.8%。

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