Synthesis, Characterization and Safety Profiling of Eudragit-Based pHResponsive Hydrogels: A Promising Platform for Colonic Delivery of Losartan Potassium.

Abstract:

OBJECTIVE:The aim of the present study was to design an efficient delivery system with an anticipated swelling and drug release properties for a prolonged drug release as well as to target colon for various hydrophilic drugs. METHOD:For this purpose, the pH-responsive hydrogel comprising a combination of Eudragit and acrylic acid was formed. The hydrogels were characterized for spectral (FTIR), thermal (TGA/DSC), structural (XRD), and morphological (SEM) investigations. Oral tolerability was assessed in rabbits for biocompatibility and oral use of the prepared hydrogels. RESULTS:The results showed that an increased incorporation of Eudragit and cross-linking agent retorted the swelling, drug loading, and drug release properties at both acid (pH 1.2) and basic pH (pH 6.8 and 7.4) , while acrylic acid presented the inverse results. The oral tolerability and toxicity studies depicted that the developed hydrogels were safe up to 3800 mg/kg body weight and caused no hematological or histopathological changes when compared with the control group. CONCLUSION:Therefore, the newly developed formulations presented adequate swelling, drug loading, release behavior, and biocompatibility properties and thus can be used as a promising tool for the colonic delivery of various hydrophilic drugs.

journal_name

Curr Drug Deliv

journal_title

Current drug delivery

authors

Mahmood S,Buabeid MA,Ullah K,Murtaza G,Mannan A,Khan SA

doi

10.2174/1567201816666190208165511

subject

Has Abstract

pub_date

2019-01-01 00:00:00

pages

548-564

issue

6

eissn

1567-2018

issn

1875-5704

pii

CDD-EPUB-96530

journal_volume

16

pub_type

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