Cited by 761Nitric Oxide and Endothelin EffectsDiabetes, Cardiovascular Risks, and LipoproteinsCardiovascular Function and Risk Factors

Elevated circulating free fatty acid levels impair endothelium-dependent vasodilation

Open access
Steinberg, H O, Tarshoby, M, Monestel, R, Hook, G, Cronin, J, Johnson, A, Bayazeed, B, Baron, A D·1997·Journal of Clinical Investigation

Abstract

We have recently shown that insulin-resistant obese subjects exhibit impaired endothelial function. Here, we test the hypothesis that elevation of circulating FFA to levels seen in insulin-resistant subjects can impair endothelial function. We studied leg blood flow responses to graded intrafemoral artery infusions of the endothelium-dependent vasodilator methacholine chloride (Mch) or the endothelium-independent vasodilator sodium nitroprusside during the infusion of saline and after raising systemic circulating FFA levels exogenously via a low- or high-dose infusion of Intralipid plus heparin or endogenously by an infusion of somatostatin (SRIF) to produce insulinopenia in groups of lean healthy humans. After 2 h of infusion of Intralipid plus heparin, FFA levels increased from 562+/-95 to 1,303+/-188 micromol, and from 350+/-35 to 3,850+/-371 micromol (P < 0.001) vs. saline for both low- and high-dose groups, respectively. Mch-induced vasodilation relative to baseline was reduced by approximately 20% in response to the raised FFA levels in both groups (P < 0.05, saline vs. FFA, ANOVA). In contrast, similar FFA elevation did not change leg blood flow responses to sodium nitroprusside. During the 2-h SRIF infusion, insulin levels fell, and FFA levels rose from 474+/-22 to 1,042+/-116 micromol (P < 0.01); Mch-induced vasodilation was reduced by approximately 20% (P < 0.02, saline vs. SRIF, ANOVA). Replacement of basal insulin levels during SRIF resulted in a fall of FFA levels from 545+/-47 to 228+/-61 micromol, and prevented the impairment of Mch-induced vasodilation seen with SRIF alone. In conclusion, (a) elevated circulating FFA levels cause endothelial dysfunction, and (b) impaired endothelial function in insulin-resistant humans may be secondary to the elevated FFA concentrations observed in these patients.

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 · 10.1172/jci119636

Cites

16 of 16 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?

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
Steinberg, H. O., Tarshoby, M., Monestel, R., Hook, G., Cronin, J., Johnson, A., Bayazeed, B., & Baron, A. D.
Affiliations
  • Indiana University (US)
  • Indiana University – Purdue University Indianapolis (US)
Venue
Journal of Clinical Investigation
Published
1997-09-01
Volume
100
Issue
5
Pages
1230-1239
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2086785365
Cited by
761
References
16
Citations by year
2026: 6 · 2025: 12 · 2024: 17 · 2023: 20 · 2022: 9 · 2021: 19 · 2020: 29 · 2019: 11 · 2018: 19 · 2017: 20 · 2016: 12 · 2015: 22 · 2014: 17 · 2013: 28 · 2012: 33
FWCI
10.61
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Veterans Affairs
  • American Heart Association
  • National Institutes of Health
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK 20452, DK42469)
  • National Center for Research Resources (MO1-RR75019)
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Function and Risk Factors
Keywords
free fatty acids, endothelial dysfunction, endothelium-dependent vasodilation, insulin resistance, methacholine, sodium nitroprusside, leg blood flow, somatostatin, insulin deficiency, Intralipid, obesity, insulin replacement therapy
MeSH terms
Adult, Blood Pressure, Endothelium, Vascular, Fat Emulsions, Intravenous, Fatty Acids, Nonesterified, Female, Humans, Insulin, Leg, Male, Nitroprusside, Somatostatin, Vasodilation, Methacholine Chloride

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