title: Calcipotriol delivery into the skin as emulgel for effective permeation.
abstract: The objective of this work is to formulate and evaluate an emulgel containing calcipotriol for treatment of psoriasis. Emulgels have emerged as a promising drug delivery system for the delivery of hydrophobic drugs. Isopropyl alcohol and polyethylene glycol have been employed as permeation enhancers. Formulation chart is made with seven formulations, evaluated for physical parameters, drug content, viscosity, thixotropy, spreadability, extrudability, mucoadhesion, diffusion studies, skin irritation test along with short term stability studies. Carbopolis is reported to have a direct influence on appearance and viscosity of final formulation. The photomicroscopic evaluations showed the presence of spherical globules in size range of 10-15 μm. Rheograms revealed that all the formulations exhibited pseudoplastic flow. Optimized formulation (F6) had shown 86.42 ± 2.0% drug release at the end of 8 h study. The release rate through dialysis membrane and rat skin is higher when compared to commercial calcipotriol ointment. Hence it is concluded that calcipotriol can be delivered topically with enhanced penetration properties when formulated as emulgel.
authors.affiliation: Department of Pharmaceutics, JSS College of Pharmacy, JSS University, Mysore, Karnataka 570015, India.
authors.forename: V
authors.initials: V
authors.lastname: Naga Sravan Kumar Varma
authors.affiliation: Department of Pharmaceutics, JSS College of Pharmacy, JSS University, Mysore, Karnataka 570015, India.
authors.forename: P V
authors.initials: PV
authors.lastname: Maheshwari
authors.affiliation: Department of Pharmaceutics, JSS College of Pharmacy, JSS University, Mysore, Karnataka 570015, India.
authors.forename: M
authors.initials: M
authors.lastname: Navya
authors.affiliation: Department of Pharmaceutics, JSS College of Pharmacy, JSS University, Mysore, Karnataka 570015, India.
authors.forename: Sharath Chandra
authors.initials: SC
authors.lastname: Reddy
authors.affiliation: Department of Pharmaceutics, JSS College of Pharmacy, JSS University, Mysore, Karnataka 570015, India.
authors.forename: H G
authors.initials: HG
authors.lastname: Shivakumar
authors.affiliation: Department of Pharmaceutics, JSS College of Pharmacy, JSS University, Mysore, Karnataka 570015, India.
authors.forename: D V
authors.initials: DV
authors.lastname: Gowda
keywords: Calcipotriol; Carbopol; Emulgel; PEG; Topical delivery