Cited by 165Cardiac Ischemia and ReperfusionCardiovascular Function and Risk FactorsPeroxisome Proliferator-Activated Receptors

Thiazolidinedione Treatment Normalizes Insulin Resistance and Ischemic Injury in the Zucker Fatty Rat Heart

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Sidell, Robert J., Cole, Mark A., Draper, Nicholas J., Desrois, Martine, Buckingham, Robin E., Clarke, Kieran·2002·Diabetes

Abstract

Obesity is associated with risk factors for cardiovascular disease, including insulin resistance, and can lead to cardiac hypertrophy and congestive heart failure. Here, we used the insulin-sensitizing agent rosiglitazone to investigate the cellular mechanisms linking insulin resistance in the obese Zucker rat heart with increased susceptibility to ischemic injury. Rats were treated for 7 or 14 days with 3 mg/kg per os rosiglitazone. Hearts were isolated and perfused before and during insulin stimulation or during 32 min low-flow ischemia at 0.3 ml · min−1 · grams wet wt−1 and reperfusion. d[2-3H]glucose was used as a tracer of glucose uptake, and phosphorus-31 nuclear magnetic resonance spectroscopy was used to follow energetics during ischemia. At 12 months of age, obese rat hearts were insulin resistant with decreased GLUT4 protein expression. During ischemia, glucose uptake was lower and depletion of ATP was greater in obese rat hearts, thereby significantly impairing recovery of contractile function during reperfusion. Rosiglitazone treatment normalized the insulin resistance and restored GLUT4 protein levels in obese rat hearts. Glucose uptake during ischemia was also normalized by rosiglitazone treatment, thereby preventing the greater loss of ATP and restoring recovery of contractile function to that of lean rat hearts. We conclude that rosiglitazone treatment, by normalizing glucose uptake, protected obese rat hearts from ischemic injury.

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Crossref · 10.2337/diabetes.51.4.1110

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  • Studies in older Zucker rats demonstrated reduced recovery from ischemia, which could be prevented by treating these animals with a TZD.

    “In contrast, studies in older Zucker rats demonstrated reduced recovery from ischemia, which could be prevented by treating these animals with a TZD (159, 322, 389).”

    From Cardiac remodeling in obesity (2008) · cites this paper as [322]

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Authors
Sidell, R. J., Cole, M. A., Draper, N. J., Desrois, M., Buckingham, R. E., & Clarke, K.
Affiliations
  • University of Oxford (GB)
  • GlaxoSmithKline (United Kingdom) (GB)
Venue
Diabetes
Published
2002-04-01
Volume
51
Issue
4
Pages
1110-1117
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2166216264
Cited by
165
References
50
Citations by year
2026: 1 · 2025: 2 · 2022: 1 · 2021: 3 · 2020: 1 · 2019: 1 · 2018: 3 · 2017: 6 · 2016: 5 · 2015: 9 · 2014: 8 · 2013: 9 · 2012: 8
FWCI
8.50
Type
journal article
Language
en
Open access
Locations
  • Diabetes (publishedVersion)
  • PubMed (publishedVersion)
Funders
British Heart Foundation (PS/02/002/14893)
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Function and Risk Factors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
Keywords
rosiglitazone, thiazolidinediones, insulin resistance, obesity, Zucker fatty rats, myocardial ischemia, myocardial ischemia-reperfusion injury, GLUT4, glucose uptake, cardiac contractile function, cardiac hypertrophy, congestive heart failure
MeSH terms
Rosiglitazone, Animals, Blood Glucose, Blood Pressure, Body Weight, Heart, Heart Rate, Hypoglycemic Agents, Insulin Resistance, Obesity, Organ Size, Perfusion, Rats, Zucker, Reference Values, Thiazoles, Time Factors, Myocardial Reperfusion, Myocardial Ischemia, Thiazolidinediones, Rats

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