Quality by Design-Optimized Glycerosome-Enabled Nanosunscreen Gel of Rutin Hydrate

Sunburn is caused by prolonged exposure to ultraviolet (UV) rays from the sun, resulting in redness of the skin as well as tenderness, swelling, and blistering issues. During the healing process, it can cause peeling, irritation, and some long-term effects, including premature aging, pigmentation, and a high risk of skin cancer. Rutin has antioxidant and anti-inflammatory effects, which could potentially reduce inflammation and soothe sunburned skin. The objective of the current proposal is to develop and create carbopol gel-encased glycerosomes for the treatment of sunburn. The Design of Expert (DoE) technique was used to optimize the proposed formulation and was subjected to various characterization parameters such as nanovesicles size, polydispersity index (PDI), surface charge, entrapment efficiency (EE), and surface morphology.

The optimized rutin-loaded glycerosomes (opt-RUT-loaded-GMs) were further characterised for drug release, 2,2-Diphenyl-1-picrylhydrazyl (DPPH) assay, and confocal laser scanning microscopy (CLSM). The formulation showed sustained release, greater permeation into the skin, and good antioxidant activity. The dermatokinetic study of opt-RUT-loaded-GMs confirms that the Rutin hydrate had better retention in the epidermis as compared to the dermis, owing to its potential for long lasting protection after topical application. It was observed that the prepared formulation was stable, highly safe, and had good sun protection factor (SPF) values that could be used as a suitable option for topical drug administration to maximize the therapeutic efficacy of the drugs.

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Rutin Hydrate (RUT) was procured from Sigma-Aldrich, (Burlington, MA, USA), a product of China. Phospholipid 90G was procured from Lipoid, Ludwigshafen, Germany. Sisco Research Laboratories PVT LTD, Mumbai, India provided the cholesterol, DPPH, and rhodamine-B. Other chemicals like glycerol, HPLC Water, disodium hydrogen phosphate, potassium dihydrogen phosphate and HCL were purchased from SD Fine Chemicals, (Mumbai, India). Carbopol® 934P NF (Carbopol 934P NF is used as Extended-release agent, Suspension and emulsion stabilizer and Bio adhesive agent) was received as a gift sample from Lubrizol Advanced Materials Inc., (Wickliffe, OH, USA). All the other solvents such as methanol, chloroform, ethanol, and octanol used were of laboratory grade, procured from Merck (Mumbai, India).

Alam, M.S.; Sultana, N.; Rashid, M.A.; Alhamhoom, Y.; Ali, A.; Waheed, A.; Ansari, M.S.; Aqil, M.; Mujeeb, M. Quality by Design-Optimized Glycerosome-Enabled Nanosunscreen Gel of Rutin Hydrate. Gels 20239, 752. https://doi.org/10.3390/gels9090752

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