ArticleInternational journal of pharmaceutics: X2026
Microemulsion-embedded hyaluronic acid microneedles improve local triptolide delivery and anti-arthritic efficacy in rheumatoid arthritis.
Article in International journal of pharmaceutics: X, 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
Rheumatoid arthritis (RA) is a chronic inflammatory joint disease characterized by persistent synovial inflammation and progressive cartilage and bone destruction. Triptolide (TP) exhibits potent anti-inflammatory activity, but its therapeutic application is limited by poor aqueous solubility and a narrow therapeutic window. To address these limitations, we developed dissolving hyaluronic acid (HA) microneedles (MNs) incorporating a TP-loaded microemulsion (mean diameter: 27.6 ± 4.4 nm) for local transdermal delivery. The TP-loaded microneedles (TP MNs) showed a uniform pyramidal morphology (height of ∼500 μm) and adequate mechanical strength (fracture force: 0.098 ± 0.010 N per needle), supporting skin insertion with microchannel depths of approximately 450 μm.
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