adrenaline receptors

adrenaline receptors

cell membrane receptors reactive to adrenaline (Table 1)
Table 1: Effects of stimulation of alpha, beta and dopamine receptors
ReceptorActionStimulating drug
Alpha-1 (α1); postsynapticVasoconstriction; positive inotropism; antidiuresisAdrenaline +
Noradrenaline +++
Alpha-2 (α2); presynapticVasodilatation; inhibition of noradrenaline releaseAdrenaline +
Noradrenaline +++
Dopamine +
Alpha-2 (α2); postsynapticConstriction of coronary arteries; promotion of salt and water excretionAdrenaline +
Noradrenaline +++
Dopamine +
Beta-1 (β1); postsynapticPositive inotropism; chronotropism; renin releaseAdrenaline ++
Noradrenaline ++
Isoprenaline ++
Dopamine +
Beta-2 (β2); presynapticNoradrenaline release accelerated; positive inotropism; chronotropismAdrenaline +
Isoprenaline +++
Beta-2 (β2); postsynapticVasodilatation; relaxation of bronchial smooth muscleAdrenaline +
Isoprenaline +++
Dopamine1; postsynapticVasodilatation; diuresisDopamine ++
Dopamine1; presynapticInhibits noradrenaline releaseDopamine +

Plus signs indicate degree of effect.

References in periodicals archive ?
People with the gene variant have more adrenaline receptors.
Another is that men have more adrenaline receptors on cells in their hearts than women do, "so maybe men are able to handle stress better" and the chemical surge it releases, Deshmukh said.
For example, it checks the responsiveness of the adrenaline receptors that call on the body to burn fat, and also genes that are linked to increased fat cell formation, food intake and fat absorption.
The researchers found that by reducing the activity of the PI-3 kinase in mice, the adrenaline receptors remained at a normal level and allowed the heart to function properly.
Given that propranolol blocks adrenaline receptors in the amygdala, she thinks that it may also block this reinforcement process and break fear association.