Congenital Anomalies of the Kidney and Urinary Tract (CAKUT) encompass a spectrum of kidney and urinary tract disorders. Here, we describe two assays that can be used to determine if a mouse has vesicoureteric reflux (VUR) or urinary tract obstruction, two urinary tract defects observed in CAKUT. To test for VUR, dye is injected into the mouse bladder and then monitored to determine if it passes retrogradely from the bladder towards the kidneys, indicating the presence of VUR. To test for urinary tract obstruction, the renal pelvis is microinjected with dye and its passage along the urinary tract is monitored to determine if there is evidence of impaired flow along the tract. These methods will facilitate the analysis of CAKUT phenotypes in the mouse.
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