Cited by 31Renin-Angiotensin System StudiesNitric Oxide and Endothelin EffectsEicosanoids and Hypertension Pharmacology

Dahl Salt-Sensitive Rats Are Protected Against Vascular Defects Related to Diet-Induced Obesity

Open access
Beyer, Andreas M., Raffai, Gabor, Weinberg, Brian, Fredrich, Katherine, Lombard, Julian H.·2012·Hypertension

Abstract

Obesity increases plasma renin activity and angiotensin II levels, leading to vascular damage, elevated blood pressure, diabetes mellitus, and renal damage. Because genetic deletion of crucial parts of the renin-angiotensin system protect against obesity-related cardiovascular defects, we hypothesized that Dahl salt-sensitive (SS) rats, a model of chronically low plasma renin activity and angiotensin II levels, would be protected against vascular defects during diet-induced obesity compared with SS.13 BN consomic rats showing normal renin-angiotensin system regulation. We evaluated vascular function in middle cerebral arteries of SS or SS.13 BN rats fed high-fat (45% kcal from fat) versus normal-fat diet for 15 to 20 weeks from weaning. Endothelium-dependent relaxation in response to acetylcholine (10 −8 to 10 −4 mol/L) was restored in middle cerebral arteries of high-fat SS rats versus normal-fat diet controls, whereas vasodilation to acetylcholine was dramatically reduced in high-fat SS 13 BN rats versus normal-fat diet controls. These findings support the hypothesis that physiological levels of angiotensin II play an important role in maintaining normal vascular relaxation in cerebral arteries and suggest that the cerebral vasculature of the SS rat model is genetically protected against endothelial dysfunction in diet-induced obesity.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1161/hypertensionaha.112.191551

Cites

52 of 52 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Salt-sensitive rats fed a high-fat diet exhibit an improvement in endothelium-dependent vascular relaxation despite significant weight gain and the presence of cardiovascular risks including elevated blood pressure and reduced renal function.

    “More striking is the finding that salt-sensitive (SS) rats fed high fat diet exhibit an improvement in endothelium-dependent vascular relaxation despite the significant weight gain and the presence of several cardiovascular risks including elevated blood pressure and reduced renal function (65).”
  • The suppressed renin-angiotensin system appears to account for the improvement in endothelial function in obese salt-sensitive rats.

    “The suppressed RAS appears to account for the improvement in endothelial function in obese SS rats (65).”
  • Obesity is associated with several other changes in the kidney that promote the development of hypertension as well as chronic kidney disease and end-stage renal disease.

    “Obesity is associated with several other changes in the kidney that promote the development of hypertension as well as chronic kidney disease and end-stage renal disease.”
  • Vascular defects such as endothelial dysfunction are not universally associated with obesity.

    “It should be noted, however, that vascular defects such as endothelial dysfunction are not universally associated with obesity. This is based on a number of studies showing the development of obesity without concomitant presence of vascular abnormalities (65;72).”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Beyer, A. M., Raffai, G., Weinberg, B., Fredrich, K., & Lombard, J. H.
Affiliations
  • Medical College of Wisconsin (US)
  • From the Department of Physiology, Medical College of Wisconsin, Milwaukee, WI.
Venue
Hypertension
Published
2012-08
Volume
60
Issue
2
Pages
404-410
ISSN
  • 0194-911X (ISSN-L)
  • 1524-4563
OpenAlex
W2106163955
Cited by
31
References
52
Citations by year
2026: 3 · 2025: 1 · 2024: 1 · 2023: 2 · 2022: 1 · 2021: 3 · 2020: 2 · 2019: 1 · 2018: 3 · 2017: 1 · 2016: 2 · 2015: 4 · 2014: 4 · 2013: 1 · 2012: 2
FWCI
2.26
Type
journal article
Language
en
Open access
Locations
  • Hypertension (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Heart, Lung, and Blood Institute (R56HL065289, HL-65289, R01HL065289, HL 72920, R01HL092026, HL-92026, R01HL072920)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Renin-Angiotensin System Studies
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Eicosanoids and Hypertension Pharmacology
Keywords
Dahl salt-sensitive rats, diet-induced obesity, high-fat diet, renin-angiotensin system, angiotensin II, endothelium-dependent relaxation, middle cerebral artery, endothelial dysfunction, acetylcholine, vascular function, consomic rats
MeSH terms
Acetylcholine, Angiotensin II, Animals, Body Weight, Disease Models, Animal, Eating, Endothelium, Vascular, Male, Obesity, Renin, Renin-Angiotensin System, Vasodilation, Vasodilator Agents, Rats, Inbred Dahl, Middle Cerebral Artery, Rats, Diet, High-Fat

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review