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Stamford Journal of Pharmaceutical Sciences
Article . 1970 . Peer-reviewed
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Development of L-PLA based Intrascleral Implant for Sustained Intraocular Delivery of Dexamethasone Sodium Phosphate

Authors: Khairul Alam; Kanij Fatema; Tasnuva Haque; Mesbah Uddin Talukder; Nazia Zaman;

Development of L-PLA based Intrascleral Implant for Sustained Intraocular Delivery of Dexamethasone Sodium Phosphate

Abstract

The present study was carried out to develop biodegradable intrascleral implants of Dexamethasone Sodium Phosphate and to evaluate the release pattern of the drug from the prepared implants. Intrascleral implants were prepared by using biodegradable polymer L-PLA (m.wt. 61,200 Da). Sodium chloride (NaCl), gelatin and glycerol monostearate (GMS) were used in various formulations to observe the effects of these additives on the release of Dexamethasone Sodium Phosphate from the prepared L-PLA based intrascleral implants. Five different formulations were prepared for this study and were coded as FD-1 (10%drug+L-PLA), FD-2 (20%drug+L-PLA), FD-3 (10%drug+L-PLA+5%NaCl), FD-4 (10%drug+L-PLA +5%Gelatin) and FD-5 (10%drug+L-PLA+10% GMS). Discs were prepared and made into appropriate shape before submerging into the buffer solution of pH 7.4 in different vials. The in vitro release profile of Dexamethasone Sodium Phosphate from the implants showed a biphasic release pattern with an initial burst followed by a diffusive phase. It was observed that FD-1 and FD-2 showed 19.63% and 29.87% release on the first day and 24.22% and 38.5% release respectively at day 30. The drug loading of FD-1 and FD-2 was 10% and 20% respectively. Among FD-3, FD-4 and FD-5; FD-3 showed highest release (32.1%) at day 30 in which 5% NaCl was used. FD-4 showed 27.45% release at day 30 where gelatin, a hydrophilic agent was used and FD-5 containing GMS, a lipid material, was found to be most retarding (19.22% at day 30). The results of the dissolution study provide an idea that L-PLA may be successfully used for the preparation of biodegradable intrascleral implant of Dexamethasone Sodium Phosphate. Key words: Dexamethasone Sodium Phosphate; Bioidegradable polymer; Intrascleral implants. DOI: 10.3329/sjps.v2i1.5817Stamford Journal of Pharmaceutical Sciences Vol.2(1) 2009: 56-60

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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Average
Average
Average
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