Trial reportThe American journal of clinical nutrition2012
Effect of soy isoflavone supplementation on nitric oxide metabolism and blood pressure in menopausal women.
Trial report in The American journal of clinical nutrition, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 3 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
12 citing papers in PubMed, 3 syntheses or guidelines pooled it, 34 citations in OpenAlex.
- Effect of soy isoflavone supplementation on blood pressure: a meta-analysis of randomized controlled trials.Nutrition journal · 2024Pooled it
- Efficacy of Dietary Polyphenols from Whole Foods and Purified Food Polyphenol Extracts in Optimizing Cardiometabolic Health: A Meta-Analysis of Randomized Controlled Trials.Advances in nutrition (Bethesda, Md.) · 2023Pooled it
- Pooled it
- Preventive and Therapeutic Effects of Sericin-Derived Oligopeptides (SDOs) from Yellow Silk Cocoons on Blood Pressure Lowering in L-NAME-Induced Hypertensive Rats.Foods (Basel, Switzerland) · 2025Article
- Urinary Equol and Equol-Predicting Microbial Species Are Favorably Associated With Cardiometabolic Risk Markers in Chinese Adults.Journal of the American Heart Association · 2024Article
- Isoflavones Effects on Vascular and Endothelial Outcomes: How Is the Gut Microbiota Involved?Pharmaceuticals (Basel, Switzerland) · 2024Review
- Current Perspectives on the Beneficial Effects of Soybean Isoflavones and Their Metabolites for Humans.Antioxidants (Basel, Switzerland) · 2021Review
- Utilization of Isoflavones in Soybeans for Women with Menopausal Syndrome: An Overview.International journal of molecular sciences · 2021Review
- Consumption of animal and plant foods and risk of left ventricular diastolic dysfunction: the Bogalusa Heart Study.ESC heart failure · 2020Article
- Effect of S-equol and Soy Isoflavones on Heart and Brain.Current cardiology reviews · 2019Review
- The Mediterranean diet, its components, and cardiovascular disease.The American journal of medicine · 2015Review
- Soy isoflavones in nutritionally relevant amounts have varied nutrigenomic effects on adipose tissue.Molecules (Basel, Switzerland) · 2015Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
backgroundIsoflavones, having chemical structures similar to estrogens, are believed to stimulate nitric oxide production and thus lower blood pressure. The efficacy of soy isoflavone supplementation to stimulate nitric oxide production and lower blood pressure in menopausal women with high normal blood pressure remains unknown.
objectiveThe objective was to test the effect of soy isoflavone supplementation on nitric oxide production and blood pressure in menopausal women with high normal blood pressure.
designA randomized, double-blind, parallel, placebo-controlled 6-wk trial was conducted to assess the effects of daily supplementation with 80 mg soy hypocotyl isoflavones (in aglycone units) on nitric oxide metabolism and blood pressure in 24 menopausal women with 12 women per group. Changes in nitric oxide metabolism were assessed via a primed, constant-infusion protocol with [15N]arginine and [13C]- and [2H]citrulline. Changes in blood pressure and associated vascular hemodynamics were assessed via office and 24-h ambulatory blood pressure monitoring, forearm blood flow, and indexes of arterial compliance.
resultsWhen compared with placebo and after control for pretreatment values, soy isoflavone supplementation had no effect on arginine flux, citrulline flux, nitric oxide synthesis, blood pressure, forearm blood flow, or estimates of arterial stiffness.
conclusionDaily supplementation with 80 mg soy hypocotyl isoflavones over a 6-wk period had no effect on nitric oxide metabolism or blood pressure and associated vascular hemodynamics in menopausal women with high normal blood pressure.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.