quantitative structure-activity relationship (qsar) models were employed for prediction the activity of p2x7 receptor antagonists. a data set consisted of 50 purine derivatives was utilized in the model construction where 40 and 10 of these compounds were in the training and test sets respectively. a suitable group of calculated molecular descriptors was selected by employing stepwise multiple ...

cardiovascular effects of opioid withdrawal have long been studied. it was reported that patients with underlying ischemic heart disease and atherosclerotic vessels may be complicated by a sudden physical and emotional stress due to withdrawal syndrome. but some other believes sudden increase in catecholamine level as a sympathetic overflow might effect on heart with and without underlying isch...

abstract fixed drug eruption (fde) is a unique type of cutaneous drug reaction that typically recurs in the identical locations on re-exposure to the attributed drug. fde is characterized by the appearance of a single or multiple sharply demarcated violaceous erythematous plaques which heal with residual hyperpigmentation. a 27-year-old woman presented with multiple dark patches over her eyelid...

in the present study, the effect of gaba (γ-aminobutyric acid) receptor agonists and antagonists on morphine-induced antinociception was investigated in formalin test in rats. intraperitoneal (i.p.) injection of different doses of morphine (1, 3, 6 and 9 mg/kg) and intracerebroventricular (i.c.v.) injection of different doses of muscimol (0.5, 1 and 2 g/rat) or baclofen (0.25, 0.5 and 1 g/rat) ...

The pathogen Staphylococcus aureus uses various strategies for persisting in the host, among which switching to a small-colony variant (SCV) phenotype is of particular biological and therapeutic significance. Phenotypically, SCVs are characterized by a slow growth rate, atypical colony morphology and unusual biochemical features, constituting a real challenge for identification by the clinical ...

Adrenocorticotropin (ACTH) acts via a highly selective receptor that is a member of the melanocortin receptor subfamily of type 1 G protein-coupled receptors. The ACTH receptor, also known as the melanocortin 2 receptor (MC2R), is unusual in that it is absolutely dependent on a small accessory protein, melanocortin receptor accessory protein (MRAP) for cell surface expression and function. ACTH...

Losartan potassium, Valsartan , Telmisartan and Irbesartan are angiotensin-II-receptor antagonists (ARA II) group which used in treatment of hypertension alone or in combination with other drugs mainly Hydrochlorothiazide. RP- HPLC method was developed for the assay of three angiotensin-II-receptor antagonists (ARA-IIs) in presence of Hydrochlorothiazide. The method was performed by reversed ph...

The effect of NMDA (N-methyl-D-aspartate) receptor antagonists on tolerance to morphine antinociception was investigated in mice. Daily subcutaneous administration of 50 mg/kg of morphine hydrochloride for three days induced tolerance to different (3,6 and 9 mg/kg) test doses of morphine. The tolerance obtained was decreased by pretreatment of animals with single or repeated doses of compe...

There is strong experimental and clinical support for a causal role of immune dysregulation and inflammation in atherosclerosis and heart failure. Atherosclerotic lesions are infiltrated by monocytes, macrophages, and T lymphocytes (predominantly Th1). Cytokines, including interleukin-6 (IL6) and tumor necrosis factor-α (TNF-α), are released by the infiltrating inflammatory cells and stimulate ...

Beta-blockers have been used as first-time antihypertensives for decades and such use has also been recommended by guidelines. However, subsequently some meta-analyses questioned this status of beta-blockers by bringing to light their limitation in terms of stroke prevention and their metabolic sideeffects. Following this, several major international hypertension guidelines have removed beta-bl...