ArticleGels (Basel, Switzerland)2026
Poloxamer/HPMC/Carbopol-Based Thermosensitive Hydrogel Loaded with Ibuprofen for Potential Vaginal Drug Release.
Article in Gels (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Vaginal drug delivery offers a critical route for local treatments but is limited by short formulation residence times. This study describes a thermosensitive in situ gel prepared by the cold-dissolution method from a ternary blend of Pluronic F127, Carbopol 940, and HPMC for localized vaginal therapy. We used ibuprofen as a model drug selected for its reported anti-inflammatory and antiproliferative activity. The hydrogels exhibited a constant gelation temperature of 28 °C and high viscosity under simulated physiological conditions; ibuprofen incorporation further reduced susceptibility to gravitational leakage. FTIR, XRD, and DSC analyses confirmed stable physical cross-linking of the polymer network and amorphous molecular dispersion of ibuprofen. Peppas-Sahlin modelling revealed a controlled, sustained release profile (>50% over 24 h) predominantly governed by Fickian diffusion (69%). The blank hydrogel exhibited high biocompatibility (>75% viability). In contrast, the ibuprofen-loaded matrix exhibited a concentration-dependent cytotoxic effect on HeLa cervical cancer cells, reducing cell viability to ~12% at the full extract concentration. Overall, this ternary hydrogel platform represents a stable, promising vehicle for sustained local administration of ibuprofen in the vaginal microenvironment.
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