Diclofenac sodium is a non-steroidal anti-inflammatory drug used in the treatment of arthritis. Treatment with NSAIDs is observed to have gastro intestinal side effects and the formulation of Diclofenac sodium using biodegradable and biocompatible polymer in the form of microspheres is expected to decrease GI side effects. In the present study, different microsphere formulations of Diclofenac S...

PURPOSE The aim of the present study was to improve the bioavailability of itopride (ITO) and sustain its action by formulating as a floating dosage form. MATERIALS AND METHODS Sustained-release floating tablets of ITO hydrochloride (HCl) were prepared by direct compression using different hydrocolloid polymers such as hydroxypropyl methylcellulose and ethylcellulose and/or methacrylic acid p...

Ca2+ signals, produced by Ca2+ release from cellular stores, switch metabolic responses inside cells. In muscle, Ca2+ sparks locally exhibit the rapid start and termination of the cell-wide signal. By imaging Ca2+ inside the store using shifted excitation and emission ratioing of fluorescence, a surprising observation was made: Depletion during sparks or voltage-induced cell-wide release occurs...

Ca release from cardiac sarcoplasmic reticulum (SR) via ryanodine receptors (RyRs) is regulated by dyadic cleft [Ca ] and intra-SR free [Ca ] ([Ca ]SR). Robust SR Ca 2 release termination is important for stable excitation–contraction coupling, and partial [Ca ]SR depletion may contribute to release termination. Here, we investigated the regulation of SR Ca release termination of spontaneous lo...

(1) l-citrulline, a coproduct of nitric oxide synthase (NOS)-catalysed metabolism of l-arginine to nitric oxide (NO), is an important intermediate of the urea cycle and a precursor for l-arginine biosynthesis in vascular cells. (2) In the present study, we have examined the characteristics of l-citrulline transport, regulation by lipopolysaccharide (LPS) and interferon-gamma (IFN-gamma) and the...

a sustained-release tablet formulation should ideally have a proper release profile insensitive to moderate changes in tablet hardness that is usually encountered in manufacturing. in this study, matrix aspirin (acetylsalicylic acid) tablets with ethylcellulose (ec), eudragit rs100 (rs), and eudragit s100 (s) were prepared by direct compression. the release behaviors were then studied in two co...

in the present investigation an attempt has been made to increase therapeutic efficacy, to reduce frequency of administration and to improve patient compliance by developing a sustained release matrix tablets of isosorbide-5-mononitrate. sustained release matrix tablets of isosorbide-5-mononitrate were developed by using different drug: polymer ratios, such in f1 (1:0.75), f2 (1:1), f3 (1:1.5),...