[New approaches to determining the type classification of presynaptic acetylcholine receptors]

A complex of special tests which took into account the coupling of the specific physiological responses with individual subtypes of muscarinic cholinoceptors, and radioligand analysis showed the predominance of M3- and M2-subtype presynaptic receptors in the rat brain hemispheres. The autoreceptors regulating the presynaptic release of acetylcholine are related mainly to the M2-subtype and account for the smaller part of the mixed population of presynaptic receptors.