Formulation and evaluation of co-prodrug of flurbiprofen and methocarbamol

The current work envisages synthesis of an ester prodrug of flurbiprofen whereby its carboxylic group was condensed with a skeletal muscle relaxant methocarbamol, with the aim of synergistic activity of two drugs, avoid flurbiprofen mediated gastro-intestinal damage and minimize the ulceration tende...

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Main Authors: Neela Bhatia, Kiran Katkar, Snehal Ashtekar
Format: Article
Language:English
Published: Elsevier 2016-06-01
Series:Asian Journal of Pharmaceutical Sciences
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1818087615001312
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author Neela Bhatia
Kiran Katkar
Snehal Ashtekar
author_facet Neela Bhatia
Kiran Katkar
Snehal Ashtekar
author_sort Neela Bhatia
collection DOAJ
description The current work envisages synthesis of an ester prodrug of flurbiprofen whereby its carboxylic group was condensed with a skeletal muscle relaxant methocarbamol, with the aim of synergistic activity of two drugs, avoid flurbiprofen mediated gastro-intestinal damage and minimize the ulceration tendency of flurbiprofen. The synthesized prodrug was characterized and confirmed by physicochemical and spectroscopic studies. Solubility and partition coefficient studies indicated an increased lipophilicity and thus better suitability for oral administration than the parent drugs and the protein binding studies revealed a low protein binding capacity of the mutual prodrug. Subsequently, in-vitro hydrolysis was studied in different pH, simulated gastric fluid, simulated intestinal fluid and plasma and quantitative evaluation was performed by high performance liquid chromatography. It was found that the prodrug remained unhydrolyzed in the stomach after absorption however, underwent rapid cleavage by the esterases in blood to give the parent drug. Furthermore, the mutual ester prodrug was evaluated for its anti-inflammatory, analgesic, skeletal muscle relaxation, ulcerogenic and total acid content activity and was found to possess comparable activity with that of the parent drugs. Microscopic structures of the stomach tissues revealed significant reduction in gastric ulcer formation of mice gastric mucosa as compared to parent carboxylic acid drug.
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spelling doaj.art-f9be098722fd464b859790662a45c6c62022-12-22T01:44:36ZengElsevierAsian Journal of Pharmaceutical Sciences1818-08762016-06-0111344945810.1016/j.ajps.2015.10.031Formulation and evaluation of co-prodrug of flurbiprofen and methocarbamolNeela BhatiaKiran KatkarSnehal AshtekarThe current work envisages synthesis of an ester prodrug of flurbiprofen whereby its carboxylic group was condensed with a skeletal muscle relaxant methocarbamol, with the aim of synergistic activity of two drugs, avoid flurbiprofen mediated gastro-intestinal damage and minimize the ulceration tendency of flurbiprofen. The synthesized prodrug was characterized and confirmed by physicochemical and spectroscopic studies. Solubility and partition coefficient studies indicated an increased lipophilicity and thus better suitability for oral administration than the parent drugs and the protein binding studies revealed a low protein binding capacity of the mutual prodrug. Subsequently, in-vitro hydrolysis was studied in different pH, simulated gastric fluid, simulated intestinal fluid and plasma and quantitative evaluation was performed by high performance liquid chromatography. It was found that the prodrug remained unhydrolyzed in the stomach after absorption however, underwent rapid cleavage by the esterases in blood to give the parent drug. Furthermore, the mutual ester prodrug was evaluated for its anti-inflammatory, analgesic, skeletal muscle relaxation, ulcerogenic and total acid content activity and was found to possess comparable activity with that of the parent drugs. Microscopic structures of the stomach tissues revealed significant reduction in gastric ulcer formation of mice gastric mucosa as compared to parent carboxylic acid drug.http://www.sciencedirect.com/science/article/pii/S1818087615001312NSAIDsFlurbiprofenSkeletal muscle relaxantMethocarbamol, Ester prodrugRP-HPLCUlcerogenicity
spellingShingle Neela Bhatia
Kiran Katkar
Snehal Ashtekar
Formulation and evaluation of co-prodrug of flurbiprofen and methocarbamol
Asian Journal of Pharmaceutical Sciences
NSAIDs
Flurbiprofen
Skeletal muscle relaxant
Methocarbamol, Ester prodrug
RP-HPLC
Ulcerogenicity
title Formulation and evaluation of co-prodrug of flurbiprofen and methocarbamol
title_full Formulation and evaluation of co-prodrug of flurbiprofen and methocarbamol
title_fullStr Formulation and evaluation of co-prodrug of flurbiprofen and methocarbamol
title_full_unstemmed Formulation and evaluation of co-prodrug of flurbiprofen and methocarbamol
title_short Formulation and evaluation of co-prodrug of flurbiprofen and methocarbamol
title_sort formulation and evaluation of co prodrug of flurbiprofen and methocarbamol
topic NSAIDs
Flurbiprofen
Skeletal muscle relaxant
Methocarbamol, Ester prodrug
RP-HPLC
Ulcerogenicity
url http://www.sciencedirect.com/science/article/pii/S1818087615001312
work_keys_str_mv AT neelabhatia formulationandevaluationofcoprodrugofflurbiprofenandmethocarbamol
AT kirankatkar formulationandevaluationofcoprodrugofflurbiprofenandmethocarbamol
AT snehalashtekar formulationandevaluationofcoprodrugofflurbiprofenandmethocarbamol