Age-dependent effects of the β adrenoceptor agonist CL316,243 on human and rat detrusor muscle strips.

Motility of detrusor smooth muscle includes adrenergic relaxation and cholinergic contraction. Since the latter may be deregulated in overactive bladder (OAB) pathophysiology, anticholinergics are the standard therapy but occasionally less tolerated due to side effects such as dry mouth and constipation. β adrenoceptor agonists also alleviate OAB symptoms by relaxing the detrusor muscle.