[Secretion of 3-methoxy-4-hydroxy-mandelic acid in pilots].
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Biomedical subjects
Publications and source records attributed to V Dolezal.
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Data are reviewed indicating that allosteric modulators can enhance the affinities of muscarinic receptors for their antagonists and agonists, that the enhancement of the affinity for agonists is relevant functionally, and that the allosterically induced conformational change also affects the interaction between the receptors and the G proteins.
Treatment of the cholinergic cell line NG108-15 with retinoic acid or cAMP results in an increase of choline acetyltransferase activity (ChAT) whereas none of these agents influences the amount of the vesicular acetylcholine transporter (VAChT) as judged from vesamicol binding and immunoblot studies. We suggest that immaturity of posttranslational events controlling the expression of VAChT protein is responsible for the apparent absence of coregulation of ChAT and VAChT protein expression.