Muscarinic Cholinergic Receptors in Normal Pediatric and Myelodysplastic Bladberi

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Abstract
Radioligand receptor binding experiments and in vitro muscle contractile studies were performed to determine the binding and functional properties of detrusor muscarinic cholinergic receptors in control and myelodysplastic bladders. Control bladder tissue was obtained from 8 children with primary vesicoureteral reflux undergoing ureteral reimplantation and 1 child at the time of organ transplant harvesting. Bladder specimens also were obtained from 10 children with myelomeningocele undergoing augmentation cystoplasty. Preoperative cystograms revealed that all children with vesicoureteral reflux had a smooth-walled bladder with normal capacity, whereas those with myelomeningocele undergoing augmentation cystoplasty had a small capacity bladder with trabeculations.