PMID: 7031155Dec 1, 1981Paper

The effect of prostaglandin inhibition on renin release. A comparison of furosemide and low-sodium stimulation tests

The Journal of Laboratory and Clinical Medicine
W H GoldinerJ H Mersey

Abstract

Furosemide administration is considered comparable to sodium restriction and upright posture as a stimulation test of PRA. This view can be questioned if different mechanisms of renin release are involved. Prostaglandins appear to be an important mediator of renin release. Using a prostaglandin antagonist, indomethacin, we attempted to assess the relative role of prostaglandins in the two renin stimulation tests. Eleven healthy volunteers on a high-sodium intake had PRA and PA measured in response to furosemide stimulation before and during indomethacin administration and then in response to sodium restriction combined with upright posture before and during indomethacin. Supine PRA was 0.41 ng/ml/hr on high sodium and 0.19 after indomethacin (p less than 0.05). On low sodium, the supine PRA was 2.07 ng/ml/hr and 0.98 after indomethacin (p less than 0.05). The increase in PRA (delta PRA) was 3.26 ng/ml/hr with furosemide stimulation and 1.23 after indomethacin (p less than 0.025). The PRA was 3.71 ng/ml/hr with low-sodium stimulation and upright posture and 2.53 after indomethacin (NS). PA paralleled PRA except that there was no suppression of supine values with indomethacin. We conclude that prostaglandins mediate baseline reni...Continue Reading

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