IN ANIMALS, reserpine depletes tissues of catecholamines, -3 reduces the response of smooth muscle to tyramine,4' 5 and potentiates the action of norepinephrine.4 6, The decreased response to tyramine probably results from depletion, since the action of this sympathomimetic amine appears to be mediated through the release of norepinephrine.4-6 The cause of hypersensitivity to exogenous norepine...

IN ANIMALS, reserpine depletes tissues of catecholamines, -3 reduces the response of smooth muscle to tyramine,4' 5 and potentiates the action of norepinephrine.4 6, The decreased response to tyramine probably results from depletion, since the action of this sympathomimetic amine appears to be mediated through the release of norepinephrine.4-6 The cause of hypersensitivity to exogenous norepine...

The free primary amines present in the faeces of 44 infants (1-18 months) with gastroenteritis have been examined by field desorption mass spectrometry of the lactone form of their fluorescamine derivatives without their prior separation. p-Tyramine, 2-phenylethylamine, the diamines, putrescine and cadaverine and several of their acyl derivatives were common constituents, but a number of other ...

IN ANIMALS, reserpine depletes tissues of catecholamines, -3 reduces the response of smooth muscle to tyramine,4' 5 and potentiates the action of norepinephrine.4 6, The decreased response to tyramine probably results from depletion, since the action of this sympathomimetic amine appears to be mediated through the release of norepinephrine.4-6 The cause of hypersensitivity to exogenous norepine...

IN ANIMALS, reserpine depletes tissues of catecholamines, -3 reduces the response of smooth muscle to tyramine,4' 5 and potentiates the action of norepinephrine.4 6, The decreased response to tyramine probably results from depletion, since the action of this sympathomimetic amine appears to be mediated through the release of norepinephrine.4-6 The cause of hypersensitivity to exogenous norepine...

cium was omitted from the medium, and markedly inhibited by the addition of cocaine. 3. Addition of reserpine or tyramine stimulated the release of catecholamine from the slices. The effect of reserpine was diminished in calcium free medium, but that of tyramine was not affected in calcium free medium. Cocaine had a weak inhibitory effect on the release of catecholamine caused by reserpine but ...

A voltammetric biosensor based on tyrosinase (TYR) was developed for determination of tyramine. Carbon material (multi-walled carbon nanotubes or mesoporous carbon CMK-3-type), polycationic polymer-i.e., poly(diallyldimethylammonium chloride) (PDDA), and Nafion were incorporated into titania dioxide sol (TiO2) to create an immobilization matrix. The features of the formed matrix were studied by...

Insect flight is one of the fastest, most intense and most energy-demanding motor behaviors. It is modulated on multiple levels by the biogenic amine octopamine. Within the CNS, octopamine acts directly on the flight central pattern generator, and it affects motivational states. In the periphery, octopamine sensitizes sensory receptors, alters muscle contraction kinetics, and enhances flight mu...

The role of catecholamines in ischemic preconditioning is unclear. Accordingly, the effects of tyramine-induced norepinephrine release and alpha 1-receptor blockade were examined. Ischemic preconditioning with a 5-minute coronary occlusion 10 minutes before a 30-minute ischemic interval resulted in only 7.7 +/- 3.1% infarction of the risk area, significantly less than that in control rabbits wi...