Efficiency was examined of microencapsulating L-ascorbic acid by polyglycerol monostearate (PGMS), and changes in the chemical and sensorial aspects of L-ascorbic acid and/or iron-fortified milk during storage were evaluated. The selected core materials were ferric ammonium sulfate and L-ascorbic acid. The highest efficiency (94.2%) of microencapsulation was found with the ratio of 5:1 as the c...

PURPOSE This is a meta-analysis of randomized, controlled trials to assess the efficacy and morbidity of medical therapies for anal fissure. METHODS Medline and the Cochrane Controlled Trials Register and the Cochrane Colorectal Cancer Review Groups Controlled Trials Register were searched using the terms "anal fissure randomized" from 1966 to 2002. Studies in which participants were randomiz...

OBJECTIVES To investigate the efficacy of transdermal glyceryl trinitrate given continuously and with a nocturnal nitrate free period. DESIGN Double blind placebo controlled study with two parallel limbs. SETTING Multicentre trial. PATIENTS 52 patients randomised to receive either continuous treatment (23 patients) or intermittent treatment with an individually titrated dose (29 patients)...

BACKGROUND prolonged head-up tilt testing and sublingual nitrate provocation are increasingly used in the diagnosis of neurocardiogenic syncope. However there are few data regarding the results of these tests in asymptomatic older subjects. OBJECTIVE to assess the responses to the prolonged head-up tilt test followed by sublingual glyceryl trinitrate provocation in asymptomatic subjects over ...

OBJECTIVE To study underlying vascular responses in chronic heart failure in patients without ACE inhibitor treatment, and to compare them with age matched controls. DESIGN Forearm blood flow was studied using venous occlusion plethysmography in patients with chronic heart failure (n = 12) and matched controls (n = 13), after infusion of L-NMMA (a nitric oxide synthase inhibitor), glyceryl tr...

OBJECTIVE To assess whether intermittent transdermal treatment with glyceryl trinitrate causes clinically significant rebound in patients maintained on beta blockers for stable angina pectoris. DESIGN Serial treadmill exercise testing in a double blind, randomised, placebo controlled cross over trial. Baseline exercise testing was performed at 0900 and 1100 at visit 1. Transdermal glyceryl tr...

*To whom all correspondence should be addressed. uring the past few decades, various types of oral controlled-release (CR) formulations have been developed to improve the clinical efficacy of drugs having short half lives as well as to increase patient compliance (1, 2). These formulations are designed to deliver drugs at a predetermined rate over a wide range of conditions and durations of the...