The adrenal renal vascular connection plays an essential role in the pathogenesis of renovascular hypertension in the rat.
The adrenal renal portal circulation (ARPC) contributes to decrease in renal blood flow occurring after renal artery clipping. The aim of present study was to determine the role of the ARPC in the development of the renovascular hypertension in 1-kidney 1-clip model in the rat. Experiments were performed on male Wistar rats. In the control group (A) the right nephrectomy and adrenalectomy were done. In the experimental groups renovascular hypertension was produced by clipping the left renal artery (silver clip ID 0.40 mm). In the first of the experimental groups (B) the right nephrectomy and adrenalectomy were done. In the second experimental group (C), for elimination of the ARPC, the right kidney and the left adrenal gland were removed. In the half number of rats from each group plasma renin activity was measured 48 hours after surgery. An increase in SBP was significantly higher in the group B (ARPC intact) than in the group C (ARPC eliminated) (172 +/- 4 vs 144 +/- 2 mmHg, p.<0.01). PRA was significantly higher in the group C than in the group B (39.0 +/- 1.4 vs 31.2 +/- 2.0 mmol/l/min, p.<0.05). In the control group (A) PRA was significantly lower as compared to the both experimental group (2.0 +/- 1.6 mmol/l/min, p.<0.05).
Abramczyk
P
P
Department of Experimental and Clinical Physiology, Medical University of Warsaw, Poland. abram@amwaw.edu.pl
Ziecina
R
R
Lisiecka
A
A
Papierski
K
K
Przybylski
J
J
D000311:Adrenal Glands / Q000098:blood supply*; D000818:Animals; D001794:Blood Pressure; D001808:Blood Vessels / Q000503:physiopathology; D006978:Hypertension, Renovascular / Q000097:blood / Q000503:physiopathology*; D007668:Kidney / Q000098:blood supply*; D008297:Male; D011168:Portal System / Q000502:physiology*; D051381:Rats; D017208:Rats, Wistar; D012083:Renin / Q000097:blood
D012083:Renin