Evidence map›Paper›PMID 21821781›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2011

Sex differences in baroreflex sensitivity, heart rate variability, and end organ damage in the TGR(mRen2)27 rat.

Megan S Johnson, Vincent G DeMarco, Cheryl M Heesch, Adam T Whaley-Connell, Rebecca I Schneider, Nathan T Rehmer, Roger D Tilmon, Carlos M Ferrario, James R Sowers

Open access · greenAbstract readComparative Study
In one paragraph

Article in American journal of physiology. Heart and circulatory physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

26 citing papers in PubMed, 38 citations in OpenAlex.

  1. Review
  2. Article
  3. Hypertension disrupts the vascular clock in both sexes.American journal of physiology. Heart and circulatory physiology · 2024
    Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Exaggerated blood pressure response to fasudil or nifedipine in hypertensive Ren-2 transgenic rats: role of altered baroreflex.Hypertension research : official journal of the Japanese Society of Hypertension · 2019
    Article
  12. Article
  13. Article
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  15. Review
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  17. Review
  18. Development of attenuated baroreflexes in obese Zucker rats coincides with impaired activation of nucleus tractus solitarius.American journal of physiology. Regulatory, integrative and comparative physiology · 2014
    Article
  19. Article
  20. 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

9 authors at 4 institutions in 2 countries.

Megan S JohnsonDepartment of Biological Sciences, University of Missouri, Columbia, Missouri, USA.
Vincent G DeMarco
Cheryl M Heesch
Adam T Whaley-Connell
Rebecca I Schneider
Nathan T Rehmer
Roger D Tilmon
Carlos M Ferrario
James R Sowers
University of Missouri · USHarry S. Truman Memorial Veterans' Hospital · USCardiovascular Research Center · BRWake Forest University · US

Funding

Vaso-Hormonal Mechanisms in HypertensionP01HL051952 · NHLBI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI GROBAN, LEANNE · 1994 to 2019
$34.8M
ANG II OPPOSES INS MEDIATED VASORELAXATION &GLU UTILZAR01HL073101 · NHLBI · UNIVERSITY OF MISSOURI-COLUMBIA · PI SOWERS, JAMES RUSSELL · 2004 to 2013
$2.7M
Ang II and Overnutrition and Insulin resistance in Cardiovascular TissueR01HL107910 · NHLBI · UNIVERSITY OF MISSOURI-COLUMBIA · PI SOWERS, JAMES RUSSELL · 2011 to 2015
$1.8M
NHLBI NIH HHS 1R01-HL073101-02NHLBI NIH HHS 1R01-HL107910-01NHLBI NIH HHS P01 HL051952
6 · The paper itself

Abstract

The aim of this investigation was to evaluate sex differences in baroreflex and heart rate variability (HRV) dysfunction and indexes of end-organ damage in the TG(mRen2)27 (Ren2) rat, a model of renin overexpression and tissue renin-angiotensin-aldosterone system overactivation. Blood pressure (via telemetric monitoring), blood pressure variability [BPV; SD of systolic blood pressure (SBP)], spontaneous baroreflex sensitivity, HRV [HRV Triangular Index (HRV-TI), standard deviation of the average NN interval (SDNN), low and high frequency power (LF and HF, respectively), and Poincaré plot analysis (SD1, SD2)], and cardiovascular function (pressure-volume loop analysis and proteinuria) were evaluated in male and female 10-wk-old Ren2 and Sprague Dawley rats. The severity of hypertension was greater in Ren2 males (R2-M) than in Ren2 females (R2-F). Increased BPV, suppression of baroreflex gain, decreased HRV, and associated end-organ damage manifested as cardiac dysfunction, myocardial remodeling, elevated proteinuria, and tissue oxidative stress were more pronounced in R2-M compared with R2-F. During the dark cycle, HRV-TI and SDNN were negatively correlated with SBP within R2-M and positively correlated within R2-F; within R2-M, these indexes were also negatively correlated with end-organ damage [left ventricular hypertrophy (LVH)]. Furthermore, within R2-M only, LVH was strongly correlated with indexes of HRV representing predominantly vagal (HF, SD1), but not sympathetic (LF, SD2), variability. These data demonstrated relative protection in females from autonomic dysfunction and end-organ damage associated with elevated blood pressure in the Ren2 model of hypertension.

Indexed as

AnimalsAutonomic Nervous System DiseasesBaroreflexBody WeightCardiac CatheterizationDarknessData Interpretation, StatisticalFemaleHeartHeart Function TestsHeart RateHypertensionLightMaleMotor ActivityOxidative StressRen2 protein, ratRenin

Identifiers

PMID21821781
PMCPMC3197369
OpenAlexW2132479140

What OpenQuestion holds

Textmetadata
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.