Potassium has been shown to suppress plasma renin activity (PRA). This study was designed to study the role of increased aldosterone production in the mediation of such a response. Five patients with adrenal insufficiency were placed on a diet of 60 meq potassium and 100-150 meq of sodium while receiving a constant amount of cortisone acetate and Florinef. Upright PRA was determined each day fo...

1. Potassium was infused intravenously in an incremental fashion and the plasma aldosterone response were measured in conscious beagle dogs at five different intakes of dietary sodium. 2. Potassium/aldosterone dose-response curves were constructed for each dietary sodium regimen. 3. The rate of increase of plasma potassium during graded potassium infusion became progressively greater with incre...

The sensitivity of sodium efflux to the removal of potassium ions from the external solution and the change in sodium efflux occurring when sodium ions are also removed were observed to be related. When Tris was used to replace external sodium ions, increases in sodium efflux were always observed whether the sensitivity of sodium efflux to external potassium ions was weak or strong. Greater per...

nitrate is one of the major sources of nitrogen for the growth of plants. it is taken up by plant roots and transported to the leaves where it is reduced to nitrite in the. the main objective of this research was to investigate stimulatory effects of sodium nitrate, potassium nitrate, ammonia and urea on the production/generation of the nitrate reductase mrna in triticum aestivum plants. the pl...

there are various methods for the analysis of potassium sorbate and sodium benzoate in food products, but a rapid and reliable method for identification of these preservatives in doogh (an iranian traditional dairy drink) is a procedure, in which high performance liquid chromatography (hplc) utilized and followed by uv diode array detection of the two preservatives. the aim of this case study w...

Perovskite-type ferroelectric (FE) crystals are wide bandgap materials with technologically valuable optical and photoelectric properties. Here, versatile engineering of electronic transitions is demonstrated in FE nanofilms of KTaO3, KNbO3 (KNO), and NaNbO3 (NNO) with a thickness of 10-30 unit cells. Control of the bandgap is achieved using heteroepitaxial growth of new structural phases on Sr...

The large-conductance, calcium-activated BK-α/β4 potassium channel, localized to the intercalated cells of the distal nephron, mediates potassium secretion during high-potassium, alkaline diets. Here we determine whether BK-α/β4-mediated potassium transport is dependent on epithelial sodium channel (ENaC)-mediated sodium reabsorption. We maximized sodium-potassium exchange in the distal nephron...

introduction: effective debridement of the root canal system with chemical irrigants prior to obturation is the key to long-term success of endodontic therapy. the purpose of this study is to compare the antibacterial activity of 2.5% sodium hypochlorite (naocl) and 2% iodine potassium iodide (iki) solutions as intracanal disinfectant in infected root canals during one-visit endodontic treatmen...

sodium benzoate and potassium sorbate are two major chemical preservatives which are used in doogh (iranian traditional dairy drink). in this study, a total of 27 commercial brands of highly consumed of doogh samples were analyzed. the means and standard deviation for concentration of these preservatives based on hplc results for analysis of benzoate and sorbate were 195·9 (sd 1·8) and 328·8 (s...

Impaired renal conservation of sodium (Na) has been reported in potassium (K)-depleted humans and experimental animals when challenged with sodium restriction(l-3); however, the magnitude, duration, or mechanism of this phenomenon have never been clearly defined. It is known that potassium depletion depresses aldosterone secretion and that sodium restriction stimulates it(l,4-7). Johnson et al....