Characterization of a murine model of cardiorenal syndrome type 1 by high-resolution Doppler sonography
Cardiorenal syndrome type 1 (CRS-1) is the acute kidney disfunction caused by an acute worsening of cardiac function. CRS-1 is the consequence of renal vasoconstriction secondary to renin-angiotensin system (RAS) activation. No animal models of CRS-1 are described in literature.
To characterize a murine model of CRS-1 by using a high-resolution ultrasound echo-color Doppler system (VEVO2100).
Post-ischemic heart failure was induced by coronary artery ligation (LAD) in seven CD1 mice. Fifteen and thirty days after surgery, mice underwent cardiac and renal echo-color Doppler. Serum creatinine and plasma renin activity were measured after killing. Animals were compared to seven CD1 control mice.
Heart failure with left ventricle dilatation (end diastolic area, p < 0.05 vs. controls) and significantly reduced ejection fraction (EF; p < 0.01 vs. controls) was evident 15 days after LAD. We measured a significant renal vasoconstriction in infarcted mice characterized by increased renal pulsatility index (PI; p < 0.05 vs. controls) associated to increased creatinine and renin levels (p < 0.05 vs. controls).
The mice model of LAD is a good model of CRS-1 evaluable by Doppler sonography and characterized by renal vasoconstriction due to the activation of the renin-angiotensin system secondary to heart failure.
Pesce P, Cecchetto L, Brocco S, Bolognesi M, Sodhi K, Abraham NG, Sacerdoti D. Characterization of a murine model of cardiorenal syndrome type 1 by high-resolution Doppler sonography. Journal of Ultrasound. 2015;18:229-235. doi:10.1007/s40477-014-0129-y