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Transferosomes stabilized hydrogel incorporated rhodomyrtone-rich extract from Rhodomyrtus tomentosa leaf fortified with phosphatidylcholine for the management of skin and soft-tissue infections

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Abstract

Rhodomyrtus tomentosa leaf (RT)-incorporated transferosomes were developed with lecithin and cholesterol blends with edge activators at different ratios. RT-transferosomes were characterized and employed in transferosomal gel formulations for the management of skin and soft-tissue infections. The optimized formulation entrapped up to 81.90 ± 0.31% of RT with spherical vesicles (405.3 ± 2.0 nm), polydispersity index value of 0.16 ± 0.08, and zeta potential of − 61.62 ± 0.86 mV. Total phenolic and flavonoid contents of RT-transferosomes were 15.65 ± 0.04 μg GAE/g extract and 43.13 ± 0.91 μg QE/g extract, respectively. RT-transferosomes demonstrated minimum inhibitory and minimum bactericidal concentrations at 8–256 and 64–1024 μg/mL, respectively. Free radical scavenging assay showed RT-transferosomes with high scavenging activity against DPPH and ABTS radicals. Moreover, RT-transferosomes demonstrated moderate activity against mushroom tyrosinase, with IC50 values of 245.32 ± 1.32 μg/mL. The biocompatibility results against L929 fibroblast and Vero cells demonstrated IC50 at 7.05 ± 0.17 and 4.73 ± 0.13 μg/mL, respectively. In addition, nitric oxide production significantly decreased by 6.78–88.25% following the treatment with 31.2–500 ng/mL RT-transferosomes (p < 0.001). Furthermore, the freeze–thaw stability study displayed no significant change in stability in the sedimentation and pH of gel fortified with RT-transferosomes. The results suggested that RT-transferosome formulation can be effectively employed as natural biomedicines for scar prevention and the management of skin soft-tissue infections.

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Funding

This work was funded by the National Research Council of Thailand [N41A640071] and partially supported by National Higher Education, Science, Research and Innovation Policy Council, Thaksin University (research project grant) Fiscal Year 2022.

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JCO and SS: Conceptualization, method, investigation, writing-original, review, and editing. TS: Formal analysis. SPV: Conceptualization, funding acquisition, review, and editing.

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Correspondence to Julalak Chorachoo Ontong.

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Ontong, J.C., Singh, S., Siriyong, T. et al. Transferosomes stabilized hydrogel incorporated rhodomyrtone-rich extract from Rhodomyrtus tomentosa leaf fortified with phosphatidylcholine for the management of skin and soft-tissue infections. Biotechnol Lett 46, 127–142 (2024). https://doi.org/10.1007/s10529-023-03452-1

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  • DOI: https://doi.org/10.1007/s10529-023-03452-1

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