Abstract
Existing conventional antithrombosis drugs have caused many side effects, opening up opportunities for the development of new thrombotic drugs. There is potential to use the hispidulin-rich fraction of sesewanua (HRFS) as a new antithrombotic. The oral route limitation of hispidulin, as a low water solubility and non-polar compound, can be addressed. This study explores the potential of HRFS in the form of dissolving microneedles (DMN). The formula was created using polymers such as polyvinyl alcohol (PVA), polyvinyl pyrrolidone K-30 (PVP), and non-ionic surfactant. Ex vivo permeation studies found that 184.95 µg/cm2 of hispidulin was released 60 h after the best formulation. After 14 days of applying HRFS-DMN, the anticoagulant and antioxidant activity in male albino rats showed higher Activated Partial Thromboplastin Time (aPTT) and Prothrombin Time (PT) values and lower Inter Cellular Adhesion Molecule-1 (ICAM-1) values. No statistically significant differences were found between the effects of two and four HRFS-DMN and the injection of heparin at a dosage of 200 IU per kilogram. However, notable distinctions were observed when comparing HRFS-DMN to negative controls, oral and quercetin as positive controls at anti-ICAM activity. The findings confirmed the feasibility of HRFS-DMN for thrombosis and its effectiveness in delivering Hispidulin (HIS) into the bloodstream. This DMN is non-irritating, safe, and painless, showing promising outcomes in enhancing the efficacy of thrombosis treatment via the transdermal route.
Published Version
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