Effects of prolonged adrenaline infusion and of mental stress on plasma minerals and parathyroid hormone

What Was Tested

The paper reports a study of Parathyroid Hormone (PTH 1-84), published as a randomized controlled trial.

The role of the sympatho-adrenal system for the secretion of PTH in humans is not established.

Previous studies on the effects of adrenaline on plasma mineral homeostasis have focused on injections or short-term infusions of adrenaline, and conflicting results concerning calcium and parathyroid hormone (PTH) responses have been reported.

Who Took Part

According to the abstract, 10 volunteers were involved.

By PubMed's age tags, the people studied were adults, men only.

How the Study Was Run

In design terms this was a randomized and placebo-controlled study.

The volunteers were allocated by chance, so the Parathyroid Hormone (PTH 1-84) group and the comparison group should start out alike.

A placebo (an inactive look-alike) gave the Parathyroid Hormone (PTH 1-84) group a baseline to be compared against.

What Was Measured

Another nine volunteers were exposed for 25 min to mental stress (a colour word conflict test; CWT), which causes marked circulatory changes and raises plasma catecholamine concentrations.

The subject headings attached to it are Blood Pressure, Calcium, Epinephrine, Heart Rate, Magnesium, Minerals and Norepinephrine.

What This Means in Plain Language

The paper is a randomized and placebo-controlled study of Parathyroid Hormone (PTH 1-84) in 10 volunteers.

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 1990 (Clinical physiology (Oxford, England)), a journal based in England.

More context: the Parathyroid Hormone (PTH 1-84) compound page, all human trials.