Evidence map›Paper›PMID 25996650›Full record

Trial reportMicrocirculation (New York, N.Y. : 1994)2015

Peripheral Microvascular Vasodilatory Response to Estradiol and Genistein in Women with Insulin Resistance.

Megan M Wenner, Hugh S Taylor, Nina S Stachenfeld

Open access · greenAbstract readClinical Trial
In one paragraph

Trial report in Microcirculation (New York, N.Y. : 1994), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.5field-weighted citation impact, top 42% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 5 citations in OpenAlex.

  1. Trial
  2. Genistein in the Treatment of Hypertension: A Review.Endocrine, metabolic & immune disorders drug targets · 2022
    Review
  3. Article
  4. ETAmerican journal of physiology. Regulatory, integrative and comparative physiology · 2017
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 3 institutions in 1 country.

Megan M WennerDepartment of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, USA.
Hugh S TaylorDepartment of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, USA.
Nina S StachenfeldDepartment of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, USA.
University of Delaware · USYale New Haven Health System · USYale University · US

Funding

Environmental Estrogen Induced Epigenetic Alteration of Uterine Stem CellsR01HD076422 · NICHD · YALE UNIVERSITY · PI TAYLOR, HUGH SMITH · 2012 to 2016
$2.0M
Phytoestrogens, insulin resistance and endothelial functionR21HL109822 · NHLBI · JOHN B. PIERCE LABORATORY, INC. · PI STACHENFELD, NINA · 2011 to 2012
$446k
NHLBI NIH HHS R21 HL109822NHLBI NIH HHS R21-HL-109822NICHD NIH HHS R01 HD076422
6 · The paper itself

Abstract

objectiveE2 enhances vasodilation in healthy women, but vascular effects of the phytoestrogen GEN are still under investigation. IR compromises microvascular function. We therefore examined the interaction of E2 , GEN, and IR on microvascular vasodilatory responsiveness.

methodsWe hypothesized that E2 and GEN increase microvascular vasodilation in healthy women (control, n = 8, 23 ± 2 year, BMI: 25.9 ± 2.9 kg/m2) but not in women with IR (n = 7, 20 ± 1 year, BMI: 27.3 ± 3.0 kg/m2). We used the cutaneous circulation as a model of microvascular vasodilatory function. We determined CVC with laser Doppler flowmetry and beat-to-beat blood pressure during local cutaneous heating (42 °C) with E2 or GEN microdialysis perfusions. Because heat-induced vasodilation is primarily an NO-mediated response, we examined microvascular vasodilation with and without L-NMMA.

resultsIn C, E2 enhanced CVC (94.4 ± 2.6% vs. saline 81.6 ± 4.2% CVCmax , p < 0.05), which was reversed with L-NMMA (80.9 ± 7.8% CVCmax , p < 0.05), but GEN did not affect vasodilation. Neither E2 nor GEN altered CVC in IR, although L-NMMA attenuated CVC during GEN.

conclusionsOur study does not support improved microvascular responsiveness during GEN exposure in healthy young women, and demonstrates that neither E2 nor GEN improves microvascular vasodilatory responsiveness in women with IR.

Indexed as

Insulin ResistanceAdolescentAdultEstradiolFemaleGenisteinHumansMicrocirculationMicrovesselsVasodilationEstradiolGenisteincutaneous microdialysisestrogennitric oxidephytoestrogensvascular reactivity

Identifiers

PMID25996650
PMCPMC4506724
OpenAlexW1496247880

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.