Development and Evaluation of Sustained Oral Ketorolac Tromethamine Particulate Matrix via Bioadhesive Chitosan Based Freeze-Dried Solid Dispersions.

Abstract:

OBJECTIVES:This study aimed to develop and evaluate chitosan (CTS) solid dispersion particulate matrix (SDPM) for sustained oral delivery of ketorolac tromethamine (KT). METHODS:SDPM formulations were prepared by freeze drying method and characterized for their effectiveness and biological activities via in vitro and in vivo assessment. KEY FINDINGS:Powder's flowability and bioadhesion of SDPM increased compared to KT-CTS physical mixtures and the raw materials. DSC analysis proved that the extent of drug crystallinity in matrix particles reduced as the amount of CTS content increased. FT-IR spectroscopy suggested drug-polymer interaction that was prominent in SDPM (1:7). In vitro drug release and simulated plasma profiles showed the superiority of SDPM (1:7) in sustaining drug release up to 12h. The optimized formula was stable during the storage time whereas the similarity factor (f2) for in vitro release data before and at the end of the study was 92%. Furthermore, in vivo bioactivity studies confirmed that the ulcerogenic property of SDPM (1:7) remarkably decreased compared to the standard drug while the analgesic and anti-inflammatory properties were maintained. CONCLUSION:Results suggested freeze-dried chitosan based SDPM (1:7) as a potential candidate for sustained oral administration of KT.

journal_name

Curr Drug Deliv

journal_title

Current drug delivery

authors

Rasool BK,Aziz US,Abu-Gharbieh E,Khan SA

doi

10.2174/1567201812666151012114006

subject

Has Abstract

pub_date

2016-01-01 00:00:00

pages

275-86

issue

2

eissn

1567-2018

issn

1875-5704

pii

CDD-EPUB-71004

journal_volume

13

pub_type

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