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Comparative analysis of PLGA ocuserts of brimonidine tartrate prepared with different methods Cover

Comparative analysis of PLGA ocuserts of brimonidine tartrate prepared with different methods

Open Access
|May 2025

Figures & Tables

Figure 1.

Different layers of ocuserts.
Different layers of ocuserts.

Figure 2.

Prepared SCM and GSM ocuserts.
Prepared SCM and GSM ocuserts.

Figure 3.

Sterility testing of prepared ocuserts after 7 days of incubation.
Sterility testing of prepared ocuserts after 7 days of incubation.

Figure 4.

Comparison of in vitro drug release study of prepared SCM and GSM ocuserts.
Comparison of in vitro drug release study of prepared SCM and GSM ocuserts.

Comparison of evaluation tests for SCM and GSM ocuserts_

Evaluation testsSCM ocusertsGSM ocusertsStandard valueReferences
Physical appearanceSmooth, no roughness without visible crackSmooth, no roughness without visible crackSmooth, no cracks(Hady et al., 2024)
Surface pH6.88±0.246.90±0.286.7–7.4(Teba et al., 2024)
Uniformity of thickness0.47±0.10 mm0.29±0.03 mm0.20–1.0 mm(Mahajan et al., 2015)
Folding endurance87.17±4.34 folds71.33±4.82 folds75–110 folds(Farahmandnejad et al., 2024)
Weight variation7.83±0.38 mg6.55±0.76 mg5–10 mg(Farahmandnejad et al., 2024)
Swelling index6.69±0.33 %5.40±0.27 %Less than 10 %(Koutsoviti et al., 2021)
Percentage moisture loss4.38±0.37 %7.38±0.46 %Less than 5 %(Tundisi et al., 2021)
Uniformity of drug content88.26±3.33 %74.91±4.39 %No specified limit(Bhabani et al., 2015)

Different petri dishes used in sterility testing and the conclusion_

Petri dishes used (n=6)TypePurposeResultConclusion
Negative controlMedium onlyTo confirm sterility of medium preparedNo microbial and fungal growth seen in the petri dishPrepared media was found to be sterile
Positive controlMedium containing bacteria and fungiTo confirm suitability of medium for growth of micro-organismsPositive growth seen in the petri dishPrepared media was suitable for microbial growth
Test controlMedium containing prepared ocusertsTo confirm sterility of prepared SCM and GSM ocusertsNo microbial and fungal growth seen in the petri platePrepared ocuserts were found to be sterile in nature

Drug content obtained at different time intervals_

Stability conditionsTime interval (in days)Percentage drug content (n=6) for SCM ocusertsPercentage drug content (n=6) for GSM ocuserts
40±2 °C / 75±5 % RH088.26±3.3374.91±4.39
788.15±3.3173.25±2.32
1587.76±3.5372.36±2.54
2187.39±2.5371.93±1.55
3087.08±3.4971.08±2.64
6086.83±2.4569.93±2.71
9086.36±2.8768.76±1.75
12086.05±2.2467.05±2.55
15085.91±2.8365.59±1.78
18085.06±2.0563.86±1.95
Language: English
Page range: 20 - 30
Submitted on: Dec 6, 2024
Accepted on: Mar 7, 2025
Published on: May 17, 2025
Published by: Comenius University in Bratislava, Faculty of Pharmacy
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year
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© 2025 Paramjot, Sheetu Wadhwa, Saurabh Singh, Dileep Singh Baghel, Bimlesh Kumar, published by Comenius University in Bratislava, Faculty of Pharmacy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.