Abstract
The prime objective of this study was to develop amphotericin B (AMB) and rifampicin (RIF) co-loaded transfersomal gel (AMB-RIF co-loaded TFG) for effective treatment of cutaneous leishmaniasis (CL). AMB-RIF co-loaded TF was prepared by the thin-film hydration method and was optimized based on particle size, polydispersity index (PDI), zeta potential, entrapment efficiency (%EE), and deformability index. Similarly, AMB-RIF co-loaded TFG was characterized in terms of rheology, spread ability, and pH. In vitro, ex vivo, and in vivo assays were performed to evaluate AMB-RIF co-loaded TF as a potential treatment option for CL. The optimized formulation had vesicles in nanosize range (167 nm) with suitable PDI (0.106), zeta potential (− 19.05 mV), and excellent %EE of RIF (66%) and AMB (85%). Moreover, it had appropriate deformability index (0.952). Additionally, AMB-RIF co-loaded TFG demonstrated suitable rheological behavior for topical application. AMB-RIF co-loaded TF and AMB-RIF co-loaded TFG showed sustained release of the incorporated drugs as compared to AMB-RIF suspension. Furthermore, RIF permeation from AMB-RIF co-loaded TF and AMB-RIF co-loaded TFG was enhanced fivefold and threefold, whereas AMB permeation was enhanced by eightfold and 6.6-fold, respectively. The significantly different IC50, higher CC50, and FIC50 (p < 0.5) showed synergistic antileishmanial potential of AMB-RIF co-loaded TF. Likewise, reduced lesion size and parasitic burden in AMB-RIF co-loaded TF–treated mouse group further established the antileishmanial effect of the optimized formulation. Besides, AMB-RIF co-loaded TFG showed a better safety profile. This study concluded that TFG may be a suitable carrier for co-delivery of AMB-RIF when administered topically for the treatment of CL.
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Abbreviations
- AMB:
-
Amphotericin B
- AMB-RIF co-loaded TF:
-
Amphotericin B and rifampicin co-loaded into transfersomes
- AMB-RIF co-loaded TFG:
-
Amphotericin B and rifampicin co-loaded into transfersomal gel
- EA:
-
Edge activator
- FBS:
-
Fetal bovine serum
- NaCh:
-
Sodium cholate
- PDI:
-
Polydispersity index
- DLS:
-
Dynamic light scattering
- PDII:
-
Primary dermal irritation index
- PL90G:
-
Phospholipon 90G
- RIF:
-
Rifampicin
- S80:
-
Span 80
- TF:
-
Transfersomes
- Stratum corneum:
-
SC
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Acknowledgements
The authors are thankful to Dr. Ihsan ul Haq, Quaid-i-Azam University, Islamabad, Pakistan, for providing technical and administrative help in conducting this research.
Funding
This research work was supported by the Higher Education Commission (HEC) of Pakistan under the National Research Support Program for Universities (NRPU) with a project No: 6171/Federal/ NRPU/R&D/HEC/2016.
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Fatima Zahid: analysis, investigation, writing first draft.
Sibgha Batool: methodology, software, investigation
Fakhar Ud Din: idea, project administration, supervision, approval of the final draft
Zakir Ali: methodology, analysis, revising the draft
Muhammad Nabi: methodology, analysis, revising the draft
Salman Khan: data curation, resources, validation
Omer Salman: data curation, validation, interpretation
Gul Majid Khan: funding, project administration, supervision
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Zahid, F., Batool, S., ud-Din, F. et al. Antileishmanial Agents Co-loaded in Transfersomes with Enhanced Macrophage Uptake and Reduced Toxicity. AAPS PharmSciTech 23, 226 (2022). https://doi.org/10.1208/s12249-022-02384-9
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DOI: https://doi.org/10.1208/s12249-022-02384-9