Abstract：
:Renal hemodynamics were studied using an electromagnetic perivascular flow sensor in anesthetized rats injected i.v. with vehicle, 5 or 10 mg/kg body weight (b.w.) sulindac. No hemodynamic changes occurred with vehicle (n = 6), but mean arterial pressure was significantly decreased (by 15 mmHg) with sulindac (n = 12). In the 5 mg/kg b.w. sulindac group (n = 7), renal blood flow progressively and significantly increased from 7.88 +/- 0.36 to 8.98 +/- 0.58 ml/min, except during concomitant intrarenal infusion of 3 mg/kg b.w. per h proadifen (n = 7). The pressure limits for efficient and no renal blood flow autoregulation remained unchanged (approx. 100 and 80 mmHg, respectively). In the 10 mg/kg b.w. sulindac group (n = 5), renal blood flow did not change but autoregulatory pressure limits were lowered by 10 mmHg 2 h after treatment (P < 0.025). Also, Na+ retention was marked. Prostanoid excretion in urine was significantly reduced with either dose but basal plasma renin activity was not (about 8 ng/ml per h; n = 15). When plasma renin activity was enhanced after a reduction in renal perfusion pressure (n = 21), it was decreased from 11.5 +/- 1.2 to 7.4 +/- 0.2 ng/ml per h only by 10 mg/kg b.w. sulindac (P < 0.05; n = 6). In conclusion, differential effects of sulindac on renal hemodynamics, Na+ excretion and plasma renin activity were demonstrated. Renal hemodynamic changes could be related in part to the cytochrome P-450 arachidonic acid pathway.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Kramp RA,Caron N,Genard J,Lejeune C,Gulbis E,Herman Adoi
10.1016/s0014-2999(97)00178-7subject
Has Abstractpub_date
1997-07-09 00:00:00pages
165-76issue
2-3eissn
0014-2999issn
1879-0712pii
S0014-2999(97)00178-7journal_volume
330pub_type
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