High impact information on tetrahexylammonium

• Quantitation of D-glucaro-1,4-lactone and total D-glucaric acid as the sum of D-glucaric acid and its lactones in the bile and urine involved extraction of bile with tetrahexylammonium chloride, adjustment of pH, boiling and determination of percentage inhibition of beta-glucuronidase activity [1].
• The K(m)-V(j) relationships for TPeA(+) and THxA(+) were fit with different reaction rate models for a symmetrical (homotypic) connexin gap junction channel and were described by either a one- or two-site model that assumed each ion traversed the entire V(j) field [2].
• 4. The K+ channel-blocking quaternary ammonium ions, tetrabutylammonium (TBuA), tetrapentylammonium (TPeA) and tetrahexylammonium (THeA), but not the Na+ channel blocker tetrodotoxin (TTX), reduced proliferation in a dose-dependent fashion offering further evidence for a role for K+ channels in Schwann cell proliferation [3].
• The data suggest that, as K(+) channel blockers and apoptosis antagonists, TPeA and THA are much more potent than TEA; however, they have nonspecific actions on several voltage-gated or ligand-gated channels [4].
• TPeA and THA (0.1-1.0 microM) attenuated staurosporine-induced caspase-3 activation and neuronal apoptosis [4].

Biological context of tetrahexylammonium

• These metabolites are converted into their isopropyl derivatives by extractive alkylation with tetrahexylammonium ion as extracting agent and isopropyl bromide as alkylating reagent in benzene [5].

Anatomical context of tetrahexylammonium

• Tetrahexylammonium ions increase Ca2+ sensitivity of contraction of guinea-pig ileal smooth muscle [6].
• A standard procedure, therefore, includes extraction of the diluted gallbladder bile with THAC in ethyl acetate, followed by determination of the maximal velocity (Vmax) of the enzyme by a kinetic method employing phenolphthalein glucuronide as the substrate [7].
• In addition, the competitive antagonist heparin and the non-competitive antagonists of the cerebellar InsP(3)receptor, tetracaine and tetrahexylammonium chloride, were also able to block InsP(3)-induced Ca(2+)release from aorta microsomes [8].

Associations of tetrahexylammonium with other chemical compounds

• 4. The mobile phase consisted of methanol-40 mM disodium hydrogenphosphate, pH 7.6 containing 0.25 mM tetrahexylammonium hydrogensulphate (25:75, v/v) [9].

Analytical, diagnostic and therapeutic context of tetrahexylammonium

• A method for derivatization of (S)-3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) by phenacylation in tetrahexylammonium hydrogensulphate as phase-transfer reagent and high-performance liquid chromatography of the HMG-diphenacyl ester is described [10].

References