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Physiologically active hydrogel (in situ gel) of sparfloxacin and its evaluation for ocular retention using gamma scintigraphy

OBJECTIVE: Due to the structure and physiological barrier of eye, only 1% of instilled dose is available for action on the corneal surface. In this work, we developed and evaluated chitosan (pH sensitive) and gellan gum (ion sensitive) in situ gel of sparfloxacin to improve precorneal residence time...

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Autores principales: Gupta, Himanshu, Malik, Aqil, Khar, R. K., Ali, Asgar, Bhatnagar, Aseem, Mittal, Gaurav
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4517321/
https://www.ncbi.nlm.nih.gov/pubmed/26229353
http://dx.doi.org/10.4103/0975-7406.160015
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author Gupta, Himanshu
Malik, Aqil
Khar, R. K.
Ali, Asgar
Bhatnagar, Aseem
Mittal, Gaurav
author_facet Gupta, Himanshu
Malik, Aqil
Khar, R. K.
Ali, Asgar
Bhatnagar, Aseem
Mittal, Gaurav
author_sort Gupta, Himanshu
collection PubMed
description OBJECTIVE: Due to the structure and physiological barrier of eye, only 1% of instilled dose is available for action on the corneal surface. In this work, we developed and evaluated chitosan (pH sensitive) and gellan gum (ion sensitive) in situ gel of sparfloxacin to improve precorneal residence time. MATERIALS AND METHODS: A protocol for radiolabeling of sparfloxacin with Tc-99m was optimized to study the ocular retention using gamma scintigraphy technique. RESULTS: The clear formulation was developed. In vitro release showed a sustained and prolonged release compared to plain eye drop solution. Dynamic and static gamma scintigraphy showed better retention than plain eye drops. The ocular tolerance test (hen's egg test-chorioallantoic membrane test and infra-red study) showed that the formulation is nonirritant and can be used as ocular vehicle. CONCLUSION: Radiolabel protocol for sparfloxacin was successfully developed and evaluated on ocular retention studies of developed in situ gel. The developed in situ gel is non irritant and can go further with clinical evaluation.
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spelling pubmed-45173212015-07-30 Physiologically active hydrogel (in situ gel) of sparfloxacin and its evaluation for ocular retention using gamma scintigraphy Gupta, Himanshu Malik, Aqil Khar, R. K. Ali, Asgar Bhatnagar, Aseem Mittal, Gaurav J Pharm Bioallied Sci Original Article OBJECTIVE: Due to the structure and physiological barrier of eye, only 1% of instilled dose is available for action on the corneal surface. In this work, we developed and evaluated chitosan (pH sensitive) and gellan gum (ion sensitive) in situ gel of sparfloxacin to improve precorneal residence time. MATERIALS AND METHODS: A protocol for radiolabeling of sparfloxacin with Tc-99m was optimized to study the ocular retention using gamma scintigraphy technique. RESULTS: The clear formulation was developed. In vitro release showed a sustained and prolonged release compared to plain eye drop solution. Dynamic and static gamma scintigraphy showed better retention than plain eye drops. The ocular tolerance test (hen's egg test-chorioallantoic membrane test and infra-red study) showed that the formulation is nonirritant and can be used as ocular vehicle. CONCLUSION: Radiolabel protocol for sparfloxacin was successfully developed and evaluated on ocular retention studies of developed in situ gel. The developed in situ gel is non irritant and can go further with clinical evaluation. Medknow Publications & Media Pvt Ltd 2015 /pmc/articles/PMC4517321/ /pubmed/26229353 http://dx.doi.org/10.4103/0975-7406.160015 Text en Copyright: © Journal of Pharmacy and Bioallied Sciences http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Gupta, Himanshu
Malik, Aqil
Khar, R. K.
Ali, Asgar
Bhatnagar, Aseem
Mittal, Gaurav
Physiologically active hydrogel (in situ gel) of sparfloxacin and its evaluation for ocular retention using gamma scintigraphy
title Physiologically active hydrogel (in situ gel) of sparfloxacin and its evaluation for ocular retention using gamma scintigraphy
title_full Physiologically active hydrogel (in situ gel) of sparfloxacin and its evaluation for ocular retention using gamma scintigraphy
title_fullStr Physiologically active hydrogel (in situ gel) of sparfloxacin and its evaluation for ocular retention using gamma scintigraphy
title_full_unstemmed Physiologically active hydrogel (in situ gel) of sparfloxacin and its evaluation for ocular retention using gamma scintigraphy
title_short Physiologically active hydrogel (in situ gel) of sparfloxacin and its evaluation for ocular retention using gamma scintigraphy
title_sort physiologically active hydrogel (in situ gel) of sparfloxacin and its evaluation for ocular retention using gamma scintigraphy
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4517321/
https://www.ncbi.nlm.nih.gov/pubmed/26229353
http://dx.doi.org/10.4103/0975-7406.160015
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