A Mediterranean diet supplemented with extra virgin olive oil or nuts improves endothelial markers involved in blood pressure control in hypertensive women

What Was Tested

The paper reports a study of Endothelin-1 in the context of low blood pressure and orthostatic hypotension, published as a randomized controlled trial.

Who Took Part

The study group was 30 participants.

By PubMed's age tags, the people studied were middle-aged adults, older adults and people over 80, women only.

Non-smoking women with moderate hypertension were submitted for 1 year to interventions promoting adherence to the TMD, one supplemented with extra virgin olive oil (EVOO) and the other with nuts versus a control low-fat diet (30 participants/group).

How the Study Was Run

The design is described as randomized.

Because people in this Endothelin-1 study were split into groups at random, differences between the groups are less likely to reflect who happened to join each one.

The methods mention a period of 1 year.

BP, NO, ET-1 and related gene expression as well as oxidative stress biomarkers were measured.

What Was Measured

PubMed files the paper under topics including Biomarkers, Blood Glucose, Blood Pressure, Body Mass Index, Cholesterol, HDL, Cholesterol, LDL and Diet, Fat-Restricted.

The authors tagged it with the keywords Endothelin-1, Hypertension, Nitric oxide, Oxidative stress and PREDIMED study.

What This Means in Plain Language

The paper is a randomized study of Endothelin-1 in 30 participants in people with low blood pressure and orthostatic hypotension over 1 year.

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.

Results are reported in around 6 sentences of the abstract; we leave them to the paper itself rather than summarise them.

The publication is from 2017 (European journal of nutrition), a journal based in Germany.

More context: the Endothelin-1 compound page, Low blood pressure and orthostatic hypotension research.