The aim of the study was to evaluate a hot-melt technique for preparation of immediate release spherical microparticles containing clarithromycin with acceptable characteristics and process yield. A modified fluid bed apparatus with rotor insert was used to prepare spherical microparticles in the size range of 125-355 µm. Poloxamer 188, PEG-32 glyceryl laurate (Gelucire 44/14) and a mixture of ...

Total lipids from liver, head, skin and muscle of Bogue were separately isolated and their composition was investigated by a combination of analytical determinations, and column and thin layer chromatography. The major components of the neutral lipid fractions from all tissues studied were triglycerides, followed by cholesterol. The triglyceride fraction of skin and head contains significant am...

Dermal nitrate preparations are claimed to be useful in the treatment of angina, as their slow absorption by-passing the liver leads to a sustained action. Ten patients with angina were exercised on a treadmill after dermal application of 16.64 mg glyceryl trinitrate or 100 mg isosorbide dinitrate or placebo. Exercise duration was significantly increased at one and three hours for both nitrate ...

Polyethylene glycols (PEGs) are products of condensed ethylene oxide and water that can have various derivatives and functions. Since many PEG types are hydrophilic, they are favorably used as penetration enhancers, especially in topical dermatological preparations. PEGs, together with their typically nonionic derivatives, are broadly utilized in cosmetic products as surfactants, emulsifiers, c...

1-O-hexadecyl-2-acetyl-sn-glyceryl-3-phosphorylcholine (platelet activating factor, PAF), (1.9 mumol) was prepared from the total lipid extract of the protozoan Tetrahymena pyriformis 9 x 10(7) cells. The procedure involved mild alkaline hydrolysis of the total lipids, followed by acetylation and purification of the product by preparative TLC and HPLC. The yield was 60% with respect to the cont...

* corresponding author. e-mail: [email protected] Phenethyl octanoate (PEO) is a natural flavour compound found in rum, spirits and wine. Six commercial and non-commercial lipase preparations were screened for 2-phenethyl octanoate synthesis activity, the most active enzymes were Lipozyme® RM IM and Palatase® 20000 L (immobilized and soluble Rhizomucor miehei lipases). Three substrates a...

Sandeep Ankolekar, Michael Fuller, Ian Cross, Cheryl Renton, Patrick Cox, Nikola Sprigg, A. Stroke Trial (RIGHT, ISRCTN66434824) Ultra-Acute Stroke: The Rapid Intervention With Glyceryl Trinitrate in Hypertensive Feasibility of an Ambulance-Based Stroke Trial, and Safety of Glyceryl Trinitrate in Print ISSN: 0039-2499. Online ISSN: 1524-4628 Copyright © 2013 American Heart Association, Inc. All...

Pulse oximeters may delay displaying the correct oxygen saturation during the onset of hypoxia. We investigated the desaturation response times of pulse oximeter sensors (forehead, ear and finger) during vasoconstriction due to mild hypothermia and vasodilation caused by glyceryl trinitrate. Ten healthy male volunteers were given three hypoxic challenges of 3 min duration under differing experi...