The aim of this study was to improve the transdermal permeation of Diclofenac Soduim. Permeation studies were carried out in -vitro using Cellophane Membrane. Topical gel formulations of diclofenac sodium were prepared by using Carbopol 934, Carbopol 940, sodium carboxymethylcellulose (NaCMC), polymer as a gel-forming material that is biocompatible and biodegradable. The skin permeation enhance...

We aimed to develop a high-throughput screening (HTS) system for preliminary predictions of human skin permeability by using an artificial membrane that can mimic the permeation behaviour of lipophilic and hydrophilic compounds across the human skin. In this study, we synthesized a copolymer containing poly(dimethylsiloxane) (PDMS) and poly(ethylene glycol) (PEG) 6000 and impregnated it onto a ...

Ryanodine receptors (RyRs) are ion channels responsible for the fast release of Ca2+ from sarco/endoplasmic reticulum to cytosol and show a selectivity over monovalent cations. By utilizing recently developed multisite model in molecular dynamic simulations, we that multiple cations accumulate upper filter RyRs, small size high valence make it preferable K+ competition space this confined regio...

1. Abstract: The objective of this work was to develop suitable film formulations of ketorolac tromethamine (KT) for transdermal use and to investigate the effect of film composition and permeation enhancers on the in-vitro release and skin permeation of the drug. Polyvinyl alcohol (PVA), sodium carboxymethylcellulose (NaCMC), and chitosan were used as film-forming polymers. The adhesive hydrop...

Objective(s):Drug delivery through the skin can transfer therapeutic levels of drugs for pharmacological effects. Analgesics such as NSAIDs have gastrointestinal side effects and topical dosage forms of these drugs are mainly preferred, especially for local pains. Meloxicam is one of NSAIDs with no topical form in the market. In this research, we attempted to quantify the skin permeation of a m...

Water permeation through nanometric channels, generally a coupled many-body process, is described in this study by a single collective coordinate. A collective diffusion model is proposed in which water movement at equilibrium is characterized as an unbiased diffusion along this coordinate and water transport in the presence of a chemical potential difference is described as one-dimensional dif...

Effect of sebum and ointment rubbing was evaluated on the permeation of a model steroidal drug, triamcinolone acetonide (TA), from white petrolatum ointment through excised hairless rat skin. Two kinds of white petrolatum ointment containing TA at a concentration of 1.0% were made using a "pre-applied ointment," which was made by applying and recovering white petrolatum on and from the rat skin...

Alcoholic preparations of Arnica montana are widely used for the topical treatment of various inflammatory diseases. Sesquiterpene lactones (SLs) are mainly responsible for their anti-inflammatory activity. Here we have studied the penetration kinetics of Arnica tinctures prepared from dried Arnica flowers originating from different chemotypes as well as of their respective dominating SLs, hele...

Perovskites are known as mixed electric conductors because they show both electronic (via electron holes) and ionic (via oxygen vacancies) conductivity. Since the electron conductivity is orders of magnitude higher than the ionic one, oxygen vacancy bulk diffusion is regarded as the rate limiting step in oxygen permeation through perovskites. However, for thin perovskite layer the rate of this ...

Various electrolytes in test solutions applied to the skin were evaluated with regard to their effects on enhanced skin permeation of calcein as a model permeant by electroporation (EP), which is a physical means to increase skin penetration by applying a high voltage pulse on the skin surface. Calcein solution (1.0 mM) containing different electrolytes at a concentration of 150 mM was applied ...