The renal excretory activity of atrial natriuretic factor is independent of renal prostaglandins in humans

What Was Tested

The paper reports a study of ANP (Atrial Natriuretic Peptide), published as a randomized controlled trial.

Since renal prostaglandins may contribute to natriuresis induced by endogenous atrial natriuretic factor (ANF), acute volume expansion (AVL), a known stimulus of ANF and prostaglandins, was induced in 8 healthy women in order to test whether the consequent sodium and water diuresis is altered by prostaglandin inhibition.

Why It Was Studied

Urinary eicosanoids (PGE2, PGF2 alpha, 6-ketoPGF1 alpha, TXB2--RIA), plasma ANF (RIA) and urinary electrolytes were determined before, during and after AVL under both placebo and diclofenac regimes.

Who Took Part

According to the abstract, 8 women were involved.

By PubMed's age tags, the people studied were adults and middle-aged adults, women only.

How the Study Was Run

The researchers set it up as a randomized, double-blind, placebo-controlled and crossover study.

The women were allocated by chance, so the ANP (Atrial Natriuretic Peptide) group and the comparison group should start out alike.

Neither the women nor the staff measuring them knew who was on ANP (Atrial Natriuretic Peptide), so expectations could not easily colour the readings.

The comparison arm used a placebo, so changes seen with ANP (Atrial Natriuretic Peptide) could be set against what happens without it.

In the crossover set-up each of the women took both ANP (Atrial Natriuretic Peptide) and the comparison in turn, acting as their own control.

What Was Measured

PubMed files the paper under topics including Atrial Natriuretic Factor, Diuresis, Electrolytes, Kidney, Prostaglandin-Endoperoxide Synthases, Prostaglandins and Radioimmunoassay.

What This Means in Plain Language

The paper is a randomized, double-blind and placebo-controlled study of ANP (Atrial Natriuretic Peptide) in 8 women.

With fewer than 40 people, it is a small study, so it is better read as an early signal for further research than as a settled answer.

The publication is from 1991 (Prostaglandins, leukotrienes, and essential fatty acids), a journal based in Scotland.

More context: the ANP (Atrial Natriuretic Peptide) compound page, all human trials.