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  • Title: The rat urinary bladder produces prostacyclin as well as other prostaglandins.
    Author: Jeremy JY, Mikhailidis DP, Dandona P.
    Journal: Prostaglandins Leukot Med; 1984 Nov; 16(2):235-48. PubMed ID: 6441939.
    Abstract:
    It has hitherto been assumed that urinary prostanoid excretion reflects renal and/or systemic prostanoid synthesis. Since the bladder forms an integral part of the urinary tract, we investigated whether this organ was capable of synthesising prostanoids. The rat urinary bladder was found to generate large amounts of 6-oxo-prostaglandin F1 alpha (the stable, spontaneous metabolite of prostacyclin) in vitro; it also produced smaller amounts of prostaglandin E2 and thromboxane B2 (the stable, spontaneous metabolite of thromboxane A2). Distension of the bladder and changes in pH and osmolarity of the incubate were found to markedly alter the production of these prostanoids. Urinary prostanoids may, therefore, reflect not merely renal and/or systemic prostanoid synthesis but also local synthesis and release by the bladder. The presence of these prostanoids in the bladder suggests that they may play a local role in cytoprotection and the regulation of bladder tone.
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