PreprintCited by 5Cardiovascular Function and Risk FactorsDiabetes, Cardiovascular Risks, and LipoproteinsCardiac Imaging and Diagnostics

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Sex-specific differences in myocardial glucose metabolic rate in non-diabetic, pre-diabetic and type 2 diabetic subjects

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Preprint — published as 10.1186/s12933-024-02246-7

Abstract

Background Evidence has shown that women with type 2 diabetes (T2DM) have a higher excess risk for cardiovascular disease (CVD) than men with T2DM. Subjects with either T2DM or prediabetes exhibit myocardial insulin resistance, but it is still unsettled whether sex-related differences in myocardial insulin resistance occur in diabetic and prediabetic subjects. Methods we aimed to evaluate sex-related differences in myocardial glucose metabolic rate (MRGlu), assessed using dynamic PET with 18 F-FDG combined with euglycemic-hyperinsulinemic clamp, in subjects with normal glucose tolerance (NGT; n = 20), prediabetes (n = 11), and T2DM (n = 26). Results Women with prediabetes or T2DM exhibited greater relative differences in myocardial MRGlu than men with prediabetes or T2DM when compared with their NGT counterparts. As compared with women with NGT, those with prediabetes exhibited an age-adjusted 35% decrease in myocardial MRGlu (P = 0.04) and women with T2DM a 74% decrease (P = 0.006), respectively. Conversely, as compared with men with NGT, men with T2DM exhibited a 40% reduction in myocardial MRGlu (P = 0.004), while no significant difference was observed between men with NGT and prediabetes. The statistical test for interaction between sex and glucose tolerance on myocardial MRGlu (P < 0.0001) was significant suggesting a sex-specific association. Conclusions Our data suggest that deterioration of glucose homeostasis in women is associated with a greater impairment in myocardial glucose metabolism as compared with men. The sex-specific myocardial insulin resistance could be an important factor responsible for the greater effect of T2DM on the excess risk of cardiovascular disease in women than in men.

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Metadata

Authors
Succurro, E., Vizza, P., Cicone, F., Cassano, V., Massimino, M., Giofrè, F., Fiorentino, T. V., Perticone, M., Sciacqua, A., Guzzi, P. H., Veltri, P., Andreozzi, F., Cascini, G. L., & Sesti, G.
Affiliations
  • Magna Graecia University (IT)
  • University of Calabria (IT)
  • Sapienza University of Rome (IT)
Corresponding author
Succurro, Elena
Venue
Cardiovascular Diabetology
Published
2023-11-15
Volume
23
Issue
1
Pages
144-144
ISSN
1475-2840 (ISSN-L)
OpenAlex
W4395659583
Cited by
5
References
1
Citations by year
2026: 2 · 2025: 2 · 2024: 1
FWCI
1.50
Type
journal article
Language
en
Open access
Locations
  • Cardiovascular Diabetology (publishedVersion, cc-by)
  • Research Square (acceptedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Archive of Doctoral Theses and Digital Collections (University of Calabria) (submittedVersion)
  • Archivio Istituzionale della Ricerca - Università degli Studi del Molise (submittedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Function and Risk Factors
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Cardiac Imaging and Diagnostics
Keywords
sex differences, myocardial glucose metabolism, type 2 diabetes, prediabetes, myocardial insulin resistance, cardiovascular disease risk in women, glucose tolerance
MeSH terms
Adult, Aged, Blood Glucose, Diabetes Mellitus, Type 2, Energy Metabolism, Female, Humans, Insulin, Insulin Resistance, Male, Middle Aged, Myocardium, Prediabetic State, Sex Factors, Glucose Clamp Technique, Biomarkers, Case-Control Studies, Radiopharmaceuticals, Fluorodeoxyglucose F18, Positron-Emission Tomography

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