| potassium | <chemistry> An Alkali element, occurring abundantly but always combined, as in the chloride, sulphate, carbonate, or silicate, in the minerals sylvite, kainite, orthoclase, muscovite, etc. Atomic weight 39.0. Symbol K (Kalium). It is reduced from the carbonate as a soft white metal, lighter than water, which oxidizes with the greatest readiness, and, to be preserved, must be kept under liquid hydrocarbons, as naphtha or kerosene. Its compounds are very important, being used in glass making, soap making, in fertilisers, and in many drugs and chemicals. Potassium permanganate, the salt KMnO4, crystallizing in dark red prisms having a greenish surface colour, and dissolving in water with a beautiful purple red colour; used as an oxidizer and disinfectant. The name chameleon mineral is applied to this salt and also to potassium manganate. Potassium bitartrate. See Cream of tartar. Origin: NL. See Potassa, Potash. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| potassium acetate | An electrolyte replenisher, as well as a urinary and systemic alkaliser, which can be administered orally or by intravenous infusion. Formerly, it was used as a diuretic and expectorant. (12 Dec 1998) |
| potassium acid tartrate | KHC4H4O6;a diuretic and laxative. Synonym: cream of tartar, potassium acid tartrate. (05 Mar 2000) |
| potassium alum | AlK(SO4)2;an astringent and styptic; also used in veterinary medicine for ulcerative stomatitis, leukorrhoea, and conjunctivitis. Synonym: potassium alum. (05 Mar 2000) |
| potassium aminosalicylate | See: p-aminosalicylic acid. (05 Mar 2000) |
| potassium antimonyltartrate | <chemical> Bis(mu-(2,3-dihydroxybutanedioato(4-)-o(1),o(2):o(3),o(4)))diantimonate(2-) dipotassium trihydrate, stereoisomer. A schistosomicide possibly useful against other parasites. It has irritant emetic properties and may cause lethal cardiac toxicity among other adverse effects. Pharmacological action: schistosomicides. Chemical name: Antimonate(2-), bis(mu-(2,3-dihydroxybutanedioato(4-)-O1,O2:O3,O4))di-, dipotassium, trihydrate, stereoisomer (12 Dec 1998) |
| potassium atractylate | The potassium salt of atractylic acid, the natural source of the latter. (05 Mar 2000) |
| potassium bicarbonate | KHCO3;used as a diuretic to decrease the acidity of the urine, and as an electrolyte replenisher. (05 Mar 2000) |
| potassium bitartrate | KHC4H4O6;a diuretic and laxative. Synonym: cream of tartar, potassium acid tartrate. (05 Mar 2000) |
| potassium bromide | KBr;an obsolescent sedative and hypnotic (sodium bromide is usually preferred). (05 Mar 2000) |
| potassium channel | Ion channel selective for potassium ions. There are diverse types with different functions, for example: delayed rectifier channels, M channels, A channels, inward rectifier channels, Ca dependent K channels. (18 Nov 1997) |
| potassium channels | Cell membrane glycoproteins selective for potassium ions. (12 Dec 1998) |
| potassium chlorate | Chlorate of potash, KClO3, used as a mouthwash and gargle in stomatitis and follicular pharyngitis; it is incompatible in the dry state with all easily oxidizable substances. (05 Mar 2000) |
| potassium chloride | <chemical> Potassium chloride. A white crystal or crystalline powder used as an electrolyte replenisher, in the treatment of hypokalaemia, in buffer solutions, and in fertilisers and explosives. Chemical name: Potassium chloride (KCl) (12 Dec 1998) |
| potassium citrate | <chemical> A systemic alkaliser, electrolyte replenisher, diuretic, and expectorant, usually administered orally. It is sometimes used in veterinary medicine as a nonirritating diuretic. Pharmacological action: diuretics, expectorants. (12 Dec 1998) |
| alpha-phenoxyethylpenicillin potassium | A penicillin preparation that is stable in gastric acid and is rapidly but only partially absorbed from the gastrointestinal tract. Synonym: alpha-phenoxyethylpenicillin potassium, penicillin B. (05 Mar 2000) |
|---|---|
| alpha-phenoxypropylpenicillin potassium | A semisynthetic acid-stable penicillin that may be more effective than penicillin G. Synonym: alpha-phenoxypropylpenicillin potassium. (05 Mar 2000) |
| aluminum potassium sulfate | AlK(SO4)2;an astringent and styptic; also used in veterinary medicine for ulcerative stomatitis, leukorrhoea, and conjunctivitis. Synonym: potassium alum. (05 Mar 2000) |
| amoxicillin-potassium clavulanate combination | <chemical> A fixed-ratio combination of amoxicillin trihydrate, an aminopenicillin, and potassium clavulanate, a beta-lactamase inhibitor, used to treat broad-spectrum antibacterial infections, especially of resistant strains. Pharmacological action: antibiotics, combined, antibiotics, lactam, enzyme inhibitors. (12 Dec 1998) |
| antimony potassium tartrate | <chemical> Bis(mu-(2,3-dihydroxybutanedioato(4-)-o(1),o(2):o(3),o(4)))diantimonate(2-) dipotassium trihydrate, stereoisomer. A schistosomicide possibly useful against other parasites. It has irritant emetic properties and may cause lethal cardiac toxicity among other adverse effects. Pharmacological action: schistosomicides. Chemical name: Antimonate(2-), bis(mu-(2,3-dihydroxybutanedioato(4-)-O1,O2:O3,O4))di-, dipotassium, trihydrate, stereoisomer (12 Dec 1998) |
| canrenoate potassium | <chemical> A synthetic pregnadiene derivative with anti-aldosterone activity. Pharmacological action: aldosterone antagonists. Chemical name: Pregna-4,6-diene-21-carboxylic acid, 17-hydroxy-3-oxo-, monopotassium salt, (17alpha)- (12 Dec 1998) |
| penicillin G potassium | Potassium benzylpenicillin;the potassium salt of penicillin G, containing 85 to 90% penicillin G. (05 Mar 2000) |
| phenethicillin potassium | A penicillin preparation that is stable in gastric acid and is rapidly but only partially absorbed from the gastrointestinal tract. Synonym: alpha-phenoxyethylpenicillin potassium, penicillin B. (05 Mar 2000) |
| monobasic potassium phosphate | KH2PO4;used as a urinary acidifier and buffer. (05 Mar 2000) |
| hydrogen-potassium-exchanging atpase | <enzyme> An enzyme isolated from the gastric mucosa that catalyses the hydrolysis of ATP coupled with the exchange of hydrogen and potassium ions across the cell wall. Chemical name: ATP phosphohydrolase (H+/K+-transporting) Registry number: EC 3.6.1.36 (12 Dec 1998) |
| sodium potassium ATPase | <enzyme> A major transport protein of the plasma membrane. A multi unit enzyme, it moves 3 sodium ions out of the cell and 2 potassium ions in, for each ATP hydrolysed. The sodium gradient established is used for several purposes (see facilitated diffusion, action potential), while the potassium gradient is dissipated through the potassium leak channel. Must not be confused with a sodium channel. (18 Nov 1997) |
| sodium-potassium-exchanging atpase | <enzyme> An enzyme that catalyses the active transport system of sodium and potassium ions across the cell wall. Sodium and potassium ions are closely coupled with membrane atpase which undergoes phosphorylation and dephosphorylation, thereby providing energy for transport of these ions against concentration gradients. Chemical name: ATP phosphohydrolase (sodium-potassium-transporting) Registry number: EC 3.6.1.37 (12 Dec 1998) |
| sodium-potassium pump | A membrane-bound transporter that maintains the high potassium and low sodium intracellular concentrations relative to the extracellular medium. This exchange is accomplished at the expense of cellular energy in the form of ATP. (05 Mar 2000) |
| sodium potassium tartrate | KNaC4H4O6;a mild saline cathartic, used as an ingredient in compound effervescent powders. Synonym: Rochelle salt, Seignette's salt, sodium potassium tartrate. (05 Mar 2000) |
| dibasic potassium phosphate | K2HPO4;a mild saline cathartic and diuretic. Synonym: dibasic potassium phosphate, dipotassium phosphate. (05 Mar 2000) |