ArticleInternational journal of nanomedicine2025
The Role of Thickening Agent Proportions in Optimizing Nanoemulsion Gel for Dermatophytosis Treatment.
Article in International journal of nanomedicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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6 authors.
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Abstract
Background: Adjusting thickening agent proportions in nanoemulsion gel (NG) balances its transdermal and topical delivery properties, making it more effective for dermatophytosis treatment. Methods: Carbomer 940 and α-pinene were used as model thickening agent and antifungal, respectively. A series of α-pinene NGs (αNG1, αNG2, αNG3) containing 0.5%, 0.75% and 1% (w/w) Carbomer 940 were developed and evaluated for stability, rheological properties, and skin irritation; assessed for ex vivo skin permeation, deposition, and fluorescent imaging of drug distribution within skin layers; and tested in vivo for efficacy against Results: The steady-state skin flux rates of α-pinene over 24 hours were αNG1 (46.93±2.52 μg/cm²/h) > αNG2 (26.01±2.65 μg/cm²/h) > αNG3 (11.36±1.69 μg/cm²/h). The α-pinene deposition in the epidermis/dermis for αNG1 decreased substantially from 2 h (62.74 ± 3.36 μg/cm²) to 12 h (11.7 ± 2.24 μg/cm²). In contrast, αNG2 showed relatively sustained deposition with 2 h (25.54 ± 2.67 μg/cm²), 6 h (57.32 ± 4.62 μg/cm²) and 12 h (23.69 ± 3.29 μg/cm²). αNG3 exhibited a slow increase from 2 h (18.32 ± 2.11 μg/cm²) to 12 h (36.78 ± 3.22 μg/cm²). The αNG2 exhibited the highest efficacy and fungal clearance rates (71.42%, 79.17%), followed by αNG1 (55.34% and 60.42%), and αNG3(43.21%, 52.08%). Fluorescent imaging confirmed αNG2's higher drug deposition within the epidermis/dermis, while PAS staining showed a potent fungal clearance with αNG2. Conclusion: This study demonstrates that Carbomer 940 proportions significantly impact the transdermal performance of αNG. αNG2, with a moderate proportion, optimally enhances skin drug delivery and deposition, achieving superior therapeutic outcomes. These findings highlight the importance of optimizing thickening agent proportions to improve the efficacy of topical nanoemulsion gels.
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