Preferential Formulation of Second Generation Antipsychotic Asenapine as Inclusion Complex with Sulphobutylether-βCD (Captisol): In vitro and In vivo Evaluation

Author(s): Juilee A. Kulkarni, Amelia M. Avachat*, Charul M. Avachat, Rohan Pradhan, Tushar S. Suryawanshi, Ejazuddin M. Khan, Elvis A. F. Martis, Evans C. Coutinho, Subhash Padhye.

Journal Name: Current Drug Delivery

Volume 15 , Issue 4 , 2018

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Abstract:

Background: Asenapine is an anti-psychotic agent approved by the US-FDA for treatment of acute schizophrenia and manic or bipolar I disorder in adults. It is poorly absorbed when administered orally, hence exhibits poor oral bioavailability, which limits its use in clinical practice.

Objective: Enhancement in solubility of asenapine through complexation with three different cyclodextrins, viz. βCD, HPβCD and sulphobutylether-βCD (Captisol®) was attempted and compared due to its poor bioavailability.

Method: Kneading method was used for preparation of inclusion complexes which were characterized by FTIR, DSC, and XRD methods. Extent of binding and stability of the 1:1 inclusion complexes were evaluated by molecular modelling and phase solubility studies. Pharmacokinetic studies were also carried out of these inclusion complexes.

Results: Captisol® complex was the most stable amongst all complexes showing 4.9 times solubility enhancement of asenapine and 96% drug release at the end of 60 min, whereas asenapine maleate (uncomplexed drug) was released completely at the end of 120min. The Cmax and AUC values of Captisol® asenapine complex (AS-Captisol complex) were 2.8 and 2.3 times higher than the uncomplexed drug.

Conclusion: This study thus demonstrated that Captisol® inclusion complex is an effective strategy for solubility and bioavailability enhancement of asenapine.

Keywords: Asenapine maleate, bioavailability, Captisol®, cyclodextrin, MM-PBSA, molecular dynamics, solubility enhancement.

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Article Details

VOLUME: 15
ISSUE: 4
Year: 2018
Page: [520 - 531]
Pages: 12
DOI: 10.2174/1567201814666171120121217
Price: $58

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