extracellular ca 2+ concentration ([ca2+]o) may be one of the factors affecting atrial natriuretic factor (anf) release. in the previous studies, there are opposite reports about the effect of [ca2+]o on anf secretion. therefore, the effect of [ca2+]o depletion on anf secretion and gene expression was studied in the present research. isolated right atria from rats were perfused for 6 and 2 hour...

The effects and interaction between cAMP-analogue dibutyryl-cAMP and calmodulin antagonists were investigated on de novo synthesis and secretion of lipids in cultures of hepatoma McArdle-RH7777 cells and normal rat hepatocytes. Dibutyryl cAMP caused a significant decrease in the secretion of de novo synthesized triacyl [3H] glycerol in both cultures of McArdle cells and rat hepatocytes. The ...

noise is considered as one of the most severe sources of environmental and work place constraints. noise effects on immune function, hormonal levels, cardiovascular and respiratory systems are well known. the aim of the study is to evaluate the effects of traffic noise on basal and stimulated gastric acid secretion. 48 healthy rats were divided into five traffic noise exposures (1, 7, 14, 21, 2...

introduction: in this study the automatic separation of oral and salivary gland activity and spontaneous secretion by means of factor analysis for quantitative salivary gland scintigraphy is introduced. methods: after intravenous administration of 99mtc sodium pertechnetate, dynamic scintigraphy was performed. 20 minutes after tracer application 2 ml of lemon juice was delivered to stimulate t...

abstract background: accumulation of secretions in the airways of patients with an endotracheal tube and mechanical ventilation will have serious consequences. one of the most common methods of airway clearance is endotracheal suctioning. in order to facilitate discharge of airway secretion resulting in promotion of gas exchange, chest physiotherapy techniques can be used at the time of expirat...

background: eukaryotic proteins generally have signal peptides, which are not only crucial for their secretion efficiencies but are important for their expression levels. the coagulation factor ix (fix) is a glycoprotein that plays a fundamental role in a blood coagulation pathway. reduced levels or dysfunctional fix are associated with hemophilia b. to improve the hfix secretion efficiency in ...

how to cite this article: sorkhi h, salehi omran mr, barari savadkoohi r, baghdadi f, nakhjavani n, bijani a. csws versus siadh as the probable causes of hyponatremia in children with acute cns disorders. iran j child neurol. 2013 summer;7(3): 34-39.   objective there is a major problem about the incidence, diagnosis, and differentiation of cerebral salt wasting syndrome (csws) and syndrome of ...

introduction: to evaluate the most sensitive symptom to predict early recurrence of nasal polyposis. prospective longitudinal cohort study. tertiary university referral center with accredited otorhinolaryngology residency programs.  materials and methods: in this prospective study, we evaluated 62 patients with diffuse nasal polyposis. all patients underwent functional endoscopic sinus surgery....

sub chronic exposure to lead in rats slows gastric emptying, but little is known about the effects of lead on gastric secretion. this study was designed to investigate the effects of lead on gastric acid secretion and its possible mechanisms in rats. lead acetate was dissolved in drinking water in a concentration of 1%. sodium acetate-containing water with a molar concentration similar to lead ...

background the physiological link between ghrelin and growth hormone (gh) has not yet been fully clarified. furthermore, the existence of a negative feedback mechanism between growth hormone–insulin-like growth factor (gh–igf)-i axis and ghrelin and the influence of amino acids on ghrelin secretion in children remain matters of debate. objectives to understand the regulation of ghrelin secretio...