Psoriasis is a chronic immune-mediated disease presented by erythematic lesions. It is an incurable disease; however, topical treatment attempts to stop the uncontrolled proliferation of skin cells. Quercetin (Qc) is a natural compound plentiful in several natural plant species and plays a vital role in treating psoriasis; however, it has poor aqueous solubility and penetrability. Consequently, our work aims to enhance Qc's dissolution and anti-psoriatic activity. In this work, Qc was isolated from Psidium guajava leaves, and spanlastics were prepared using the ethanol injection method. The % encapsulation efficiency (%EE) of Qc ranged from 76.40 ± 1.42 to 98.29 ± 0.2,4, and the Particle size (P.size) varied between 414.66 ± 1.94 to 748.33 ± 5.19 nm. In vitro release studies of Qc from spanlastic preparations were significantly higher than those from free drug dispersion. Selected Qc spanlastics formulation was included in Sodium carboxymethylcellulose (SCMC) 3.5% gel for biological application. Clinical improvement after eight weeks of treatment was powerfully distinguished. By the end of 8 weeks of treatment, Psoriasis Area and Severity Index (PASI) score decreased from 5.19 ± 1.14 at baseline to 2.26 ± 1.1. Qc is famous for its apoptotic-inducing activity, livin is one of the Inhibitors of apoptosis proteins (IAPs), and its function is mediated through the inhibition of caspase activation. Quantitative real-time polymer chain reaction (qrt- PCR) declared that the expression of livin (p = 0.002) was lowered while that of caspase-9 (P < 0.001) was elevated in comparison to those before treatment with QC spanlastics; thus, Qc spanlastics are promising easily prepared formulation for the treatment of psoriasis.
Research Date
Research Department
Research Journal
Journal of Drug Delivery Science and Technology
Research Publisher
Elsevier
Research Rank
international
Research Vol
76
Research Year
2022
Research Member
Research_Pages
103809
Research Abstract