Preparation of Hot-Melt-Extruded Solid Dispersion Based on Pre-Formulation Strategies and Its Enhanced Therapeutic Efficacy

In this study, an amorphous solid dispersion containing the poorly water-soluble drug, bisacodyl, was prepared by hot-melt extrusion to enhance its therapeutic efficacy. First, the miscibility and interaction between the drug and polymer were investigated as pre-formulation strategies using various...

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Main Authors: Seon-Kwang Lee, Eun-Sol Ha, Heejun Park, Kyu-Tae Kang, Ji-Su Jeong, Jeong-Soo Kim, In-hwan Baek, Min-Soo Kim
Format: Article
Language:English
Published: MDPI AG 2023-11-01
Series:Pharmaceutics
Subjects:
Online Access:https://www.mdpi.com/1999-4923/15/12/2704
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author Seon-Kwang Lee
Eun-Sol Ha
Heejun Park
Kyu-Tae Kang
Ji-Su Jeong
Jeong-Soo Kim
In-hwan Baek
Min-Soo Kim
author_facet Seon-Kwang Lee
Eun-Sol Ha
Heejun Park
Kyu-Tae Kang
Ji-Su Jeong
Jeong-Soo Kim
In-hwan Baek
Min-Soo Kim
author_sort Seon-Kwang Lee
collection DOAJ
description In this study, an amorphous solid dispersion containing the poorly water-soluble drug, bisacodyl, was prepared by hot-melt extrusion to enhance its therapeutic efficacy. First, the miscibility and interaction between the drug and polymer were investigated as pre-formulation strategies using various analytical approaches to obtain information for selecting a suitable polymer. Based on the calculation of the Hansen solubility parameter and the identification of the single glass transition temperature (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>T</mi><mi>g</mi></msub></mrow></semantics></math></inline-formula>), the miscibility between bisacodyl and all the investigated polymers was confirmed. Additionally, the drug–polymer molecular interaction was identified based on the comprehensive results of dynamic vapor sorption (DVS), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, and a comparison of the predicted and experimental values of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>T</mi><mi>g</mi></msub></mrow></semantics></math></inline-formula>. In particular, the hydroxypropyl methylcellulose (HPMC)-based solid dispersions, which exhibited large deviation between the calculated and experimental values of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>T</mi><mi>g</mi></msub></mrow></semantics></math></inline-formula> and superior physical stability after DVS experiments, were selected as the most appropriate solubilized bisacodyl formulations due to the excellent inhibitory effects on precipitation based on the results of the non-sink dissolution test. Furthermore, it was shown that the enteric-coated tablets containing HPMC–bisacodyl at a 1:4 ratio (<i>w</i>/<i>w</i>) had significantly improved in vivo therapeutic laxative efficacy compared to preparations containing un-solubilized raw bisacodyl in constipation-induced rabbits. Therefore, it was concluded that the pre-formulation strategy, using several analyses and approaches, was successfully applied in this study to investigate the miscibility and interaction of drug–polymer systems, hence resulting in the manufacture of favorable solid dispersions with favorable in vitro and in vivo performances using hot-melt extrusion processes.
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spelling doaj.art-b43364c40a8e453d9a89c6247158fc7c2023-12-22T14:32:03ZengMDPI AGPharmaceutics1999-49232023-11-011512270410.3390/pharmaceutics15122704Preparation of Hot-Melt-Extruded Solid Dispersion Based on Pre-Formulation Strategies and Its Enhanced Therapeutic EfficacySeon-Kwang Lee0Eun-Sol Ha1Heejun Park2Kyu-Tae Kang3Ji-Su Jeong4Jeong-Soo Kim5In-hwan Baek6Min-Soo Kim7College of Pharmacy, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 46241, Republic of KoreaCollege of Pharmacy, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 46241, Republic of KoreaCollege of Pharmacy, Duksung Women’s University, 33, Samyangro 144-gil, Dobong-gu, Seoul 01369, Republic of KoreaCollege of Pharmacy, Duksung Women’s University, 33, Samyangro 144-gil, Dobong-gu, Seoul 01369, Republic of KoreaCollege of Pharmacy, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 46241, Republic of KoreaDong-A ST Co., Ltd., Giheung-gu, Yongin 17073, Republic of KoreaCollege of Pharmacy, Kyungsung University, 309, Suyeong-ro, Nam-gu, Busan 48434, Republic of KoreaCollege of Pharmacy, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 46241, Republic of KoreaIn this study, an amorphous solid dispersion containing the poorly water-soluble drug, bisacodyl, was prepared by hot-melt extrusion to enhance its therapeutic efficacy. First, the miscibility and interaction between the drug and polymer were investigated as pre-formulation strategies using various analytical approaches to obtain information for selecting a suitable polymer. Based on the calculation of the Hansen solubility parameter and the identification of the single glass transition temperature (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>T</mi><mi>g</mi></msub></mrow></semantics></math></inline-formula>), the miscibility between bisacodyl and all the investigated polymers was confirmed. Additionally, the drug–polymer molecular interaction was identified based on the comprehensive results of dynamic vapor sorption (DVS), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, and a comparison of the predicted and experimental values of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>T</mi><mi>g</mi></msub></mrow></semantics></math></inline-formula>. In particular, the hydroxypropyl methylcellulose (HPMC)-based solid dispersions, which exhibited large deviation between the calculated and experimental values of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>T</mi><mi>g</mi></msub></mrow></semantics></math></inline-formula> and superior physical stability after DVS experiments, were selected as the most appropriate solubilized bisacodyl formulations due to the excellent inhibitory effects on precipitation based on the results of the non-sink dissolution test. Furthermore, it was shown that the enteric-coated tablets containing HPMC–bisacodyl at a 1:4 ratio (<i>w</i>/<i>w</i>) had significantly improved in vivo therapeutic laxative efficacy compared to preparations containing un-solubilized raw bisacodyl in constipation-induced rabbits. Therefore, it was concluded that the pre-formulation strategy, using several analyses and approaches, was successfully applied in this study to investigate the miscibility and interaction of drug–polymer systems, hence resulting in the manufacture of favorable solid dispersions with favorable in vitro and in vivo performances using hot-melt extrusion processes.https://www.mdpi.com/1999-4923/15/12/2704hot-melt extrusionsolid dispersionmiscibilitymolecular interactionbisacodylin vivo efficacy
spellingShingle Seon-Kwang Lee
Eun-Sol Ha
Heejun Park
Kyu-Tae Kang
Ji-Su Jeong
Jeong-Soo Kim
In-hwan Baek
Min-Soo Kim
Preparation of Hot-Melt-Extruded Solid Dispersion Based on Pre-Formulation Strategies and Its Enhanced Therapeutic Efficacy
Pharmaceutics
hot-melt extrusion
solid dispersion
miscibility
molecular interaction
bisacodyl
in vivo efficacy
title Preparation of Hot-Melt-Extruded Solid Dispersion Based on Pre-Formulation Strategies and Its Enhanced Therapeutic Efficacy
title_full Preparation of Hot-Melt-Extruded Solid Dispersion Based on Pre-Formulation Strategies and Its Enhanced Therapeutic Efficacy
title_fullStr Preparation of Hot-Melt-Extruded Solid Dispersion Based on Pre-Formulation Strategies and Its Enhanced Therapeutic Efficacy
title_full_unstemmed Preparation of Hot-Melt-Extruded Solid Dispersion Based on Pre-Formulation Strategies and Its Enhanced Therapeutic Efficacy
title_short Preparation of Hot-Melt-Extruded Solid Dispersion Based on Pre-Formulation Strategies and Its Enhanced Therapeutic Efficacy
title_sort preparation of hot melt extruded solid dispersion based on pre formulation strategies and its enhanced therapeutic efficacy
topic hot-melt extrusion
solid dispersion
miscibility
molecular interaction
bisacodyl
in vivo efficacy
url https://www.mdpi.com/1999-4923/15/12/2704
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