The objective of this work was to study the dissolution process from piroxicam pellets, coated with Eudragit RS 30 D by fluidized bed, in order to achieve an enteric release of the drug. The coating product contains a methacrylic copolymer which is insoluble, but permeable. The drug-loaded pellets were prepared by extrusionspheronization using microcrystalline cellulose (Avicel PH 101) as a sph...

We have successfully prepared layered double hydroxide (LDH) nanomaterials containing calcium and aluminum ions in the framework (CaAl-LDH). The surface of CaAl-LDH was coated with enteric polymer, Eudragit®L 100 in order to protect nanomaterials from fast dissolution under gastric condition of pH 1.2. The X-ray diffraction patterns, Fourier transform infrared spectroscopy, scanning electron an...

Matrix formulations of Eudragit E 100: NE 40D polymers (100:0, 70:30, 60:40, 50:50% w/w) with 20% w/w of triacetine and 5% w/w of atenolol were prepared by film casting method with different solvents (methanol, 2-propanol and acetone). In vitro release of atenolol from the films were studied by vertical Franz diffusion cells in HEPES buffer (pH 7.4) for 78 h. Direct currents of 0.1 and 0.5 mA/c...

Matrix type transdermal therapeutic systems (TTS) of glibenclamide were formulated using polymers Eudragit RL 100, ethyl cellulose, PVP K-30, and polyvinyl acetate, and citral was used as the penetration enhancer. The polymer films were formulated with Eudragit RL 100 and PVP K-30 in different ratios and subsequently subjected to ex vivo studies (drug permeation through rat skin) followed by in...

S100 proteins were first discovered in 1965 by Moore as a major protein fraction (0.6% of total soluble protein) isolated from bovine brain (Moore 1965). The protein was given the name S100 due to its high solubility in saturated ammonium sulfate. Later experiments showed the S100 protein fraction constituted two different dimeric species comprised of two b protomers (S100B) or an a, b heterodi...

Purpose: The aim of the work was to prepare nitrendipne-loaded Eudragit RL 100 microspheres to achieve sustained release nitrendipine. Method: Nitrendipne-loaded Eudragit RL 100 microspheres were prepared by an emulsion-solvent evaporation method using ethanol/liquid paraffin system. The resultant microspheres were evaluated for average particle size, drug loading, in vitro drug release and rel...

A commercial protease, Esperase, was covalently linked to Eudragit S-100, a reversible soluble–insoluble polymer by carbodiimide coupling. When compared to the native enzyme, the immobilized form presented a lower specific activity towards high molecular weight substrates but a higher thermal stability at all temperatures tested. The optimum pH of the immobilized protease was shifted towards th...