Cited by 292Metabolism, Diabetes, and CancerAdipose Tissue and MetabolismNatural Antidiabetic Agents Studies

AICAR Administration Causes an Apparent Enhancement of Muscle and Liver Insulin Action in Insulin-Resistant High-Fat-Fed Rats

Open access
Iglesias, Miguel A., Ye, Ji-Ming, Frangioudakis, Georgia, Saha, Asish K., Tomas, Eva, Ruderman, Neil B., Cooney, Gregory J., Kraegen, Edward W.·2002·Diabetes

Abstract

Exercise improves insulin sensitivity. As AMP-activated protein kinase (AMPK) plays an important role in muscle metabolism during exercise, we investigated the effects of the AMPK activator 5-aminoimidazole-4-carboxamide-1-β-d-ribofuranoside (AICAR) on insulin action in insulin-resistant high-fat-fed (HF) rats. Rats received a subcutaneous injection of 250 mg/kg AICAR (HF-AIC) or saline (HF-Con). The next day, euglycemic-hyperinsulinemic clamp studies were performed. Glucose infusion rate during the clamp was enhanced (50%) in HF-AIC compared with HF-Con rats. Insulin-stimulated glucose uptake was improved in white but not in red quadriceps, whereas glycogen synthesis was improved in both red and white quadriceps of HF-AIC rats. HF-AIC rats also showed increased insulin suppressibility of hepatic glucose output (HGO). AICAR-induced responses in both liver and muscle were accompanied by reduced malonyl-CoA content. Clamp HGO correlated closely with hepatic triglyceride content (r = 0.67, P < 0.01). Thus, a single dose of AICAR leads to an apparent enhancement in whole-body, muscle, and liver insulin action in HF rats that extends beyond the expected time of AMPK activation. Whether altered tissue lipid metabolism mediates AICAR effects on insulin action remains to be determined. Follow-up studies suggest that at least some of the post-AICAR insulin-enhancing effects also occur in normal rats. Independent of this, the results suggest that pharmacological activation of AMPK may have potential in treating insulin-resistant states and type 2 diabetes.

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 · 10.2337/diabetes.51.10.2886

Cites

53 of 53 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?

  • Indirect skeletal muscle CPT1 activation, by the use of AMPK activators or the ACC2 knockout, ameliorates insulin-stimulated glucose uptake in rodents.

    “indirect SkM CPT1 activation, by the use of AMPK activators ([77](#B77)) or the ACC2 knockout ([1](#B1)), ameliorates insulin-stimulated glucose uptake in rodents.”

    From Mitochondrial fatty acid oxidation in obesity (2013) · cites this paper as [77]

  • The drug AICA riboside, which activates AMPK, alleviates metabolic defects of type 2 diabetes and the metabolic syndrome in animal models.

    “The drug 5-aminoimidazole-4-carboxamide (AICA) riboside, which activates AMPK, alleviates metabolic defects of type 2 diabetes and the metabolic syndrome in animal models (15-18).”

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
Iglesias, M. A., Ye, J.-M., Frangioudakis, G., Saha, A. K., Tomas, E., Ruderman, N. B., Cooney, G. J., & Kraegen, E. W.
Affiliations
  • Garvan Institute of Medical Research (AU)
  • Boston University (US)
  • Garvan Institute of Medical Research, Sydney, New South Wales, Australia
Venue
Diabetes
Published
2002-10-01
Volume
51
Issue
10
Pages
2886-2894
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2114339108
Cited by
290
References
50
Citations by year
2026: 1 · 2025: 3 · 2024: 1 · 2023: 3 · 2022: 5 · 2021: 5 · 2020: 5 · 2019: 4 · 2018: 11 · 2017: 9 · 2016: 4 · 2015: 14 · 2014: 21 · 2013: 15 · 2012: 15
FWCI
6.72
Type
journal article
Language
en
Open access
Locations
  • Diabetes (publishedVersion)
  • PubMed (publishedVersion)
  • eCite Digital Repository (University of Tasmania) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • Medical Research Council
  • National Health and Medical Research Council
  • National Medical Research Council
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Natural Antidiabetic Agents Studies
Keywords
AICAR, AMPK, insulin resistance, high-fat feeding, insulin sensitivity, skeletal muscle glucose uptake, hepatic glucose production, glycogen synthesis, malonyl-CoA, hepatic triglycerides, type 2 diabetes, physical activity
MeSH terms
Aminoimidazole Carboxamide, Animals, Blood Glucose, Body Weight, Dietary Fats, Hypoglycemic Agents, Insulin, Insulin Resistance, Liver, Male, Ribonucleotides, Glucose Clamp Technique, Rats, Wistar, Muscle, Skeletal, Rats

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