Cited by 304Diabetes, Cardiovascular Risks, and LipoproteinsAdipose Tissue and MetabolismMetabolism, Diabetes, and Cancer

Impaired in vivo mitochondrial function but similar intramyocellular lipid content in patients with type 2 diabetes mellitus and BMI-matched control subjects

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Schrauwen-Hinderling, V. B., Kooi, M. E., Hesselink, M. K. C., Jeneson, J. A. L., Backes, W. H., van Echteld, C. J. A., van Engelshoven, J. M. A., Mensink, M. +1 more·2007·Diabetologia

Abstract

Aims/hypothesis Mitochondrial dysfunction and increased intramyocellular lipid (IMCL) content have both been implicated in the development of insulin resistance and type 2 diabetes mellitus, but the relative contributions of these two factors in the aetiology of diabetes are unknown. As obesity is an independent determinant of IMCL content, we examined mitochondrial function and IMCL content in overweight type 2 diabetes patients and BMI-matched normoglycaemic controls.Methods In 12 overweight type 2 diabetes patients and nine controls with similar BMI (29.4 +/- 1 and 29.3 +/- 0.9 kg/m(2) respectively) in vivo mitochondrial function was determined by measuring phosphocreatine recovery half-time (PCr half-time) immediately after exercise, using phosphorus-31 magnetic resonance spectroscopy. IMCL content was determined by proton magnetic resonance spectroscopic imaging and insulin sensitivity was measured with a hyperinsulinaemic-euglycaemic clamp.Results The PCr half-time was 45% longer in diabetic patients compared with controls (27.3 +/- 3.5 vs 18.7 +/- 0.9 s, p < 0.05), whereas IMCL content was similar (1.37 +/- 0.30 vs 1.25 +/- 0.22% of the water resonance), and insulin sensitivity was reduced in type 2 diabetes patients (26.0 +/- 2.2 vs 18.9 +/- 2.3 mumol min(-1) kg(-1), p < 0.05 [all mean +/- SEM]). PCr half-time correlated positively with fasting plasma glucose (r (2) = 0.42, p < 0.01) and HbA(1c) (r (2) = 0.48, p < 0.05) in diabetic patients.Conclusions/interpretation The finding that in vivo mitochondrial function is decreased in type 2 diabetes patients compared with controls whereas IMCL content is similar suggests that low mitochondrial function is more strongly associated with insulin resistance and type 2 diabetes than a high IMCL content per se. Whether low mitochondrial function is a cause or consequence of the disease remains to be investigated.

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Authors
Schrauwen-Hinderling, V. B., Kooi, M. E., Hesselink, M. K. C., Jeneson, J. A. L., Backes, W. H., van Echteld, C. J. A., van Engelshoven, J. M. A., Mensink, M., & Schrauwen, P.
Affiliations
  • Maastricht University Medical Centre (NL)
  • Maastricht University (NL)
  • Eindhoven University of Technology (NL)
Venue
Diabetologia
Published
2006-11-09
Volume
50
Issue
1
Pages
113-120
ISSN
  • 0012-186X (ISSN-L)
  • 1432-0428
OpenAlex
W2152958952
Cited by
304
References
33
Citations by year
2026: 5 · 2025: 3 · 2024: 10 · 2023: 21 · 2022: 16 · 2021: 15 · 2020: 8 · 2019: 12 · 2018: 13 · 2017: 15 · 2016: 16 · 2015: 13 · 2014: 15 · 2013: 28 · 2012: 26
FWCI
10.46
Type
journal article
Language
en
Open access
Locations
  • Diabetologia (publishedVersion)
  • PubMed (publishedVersion)
  • Research Publications (Maastricht University) (publishedVersion, other-oa)
  • TU/e Research Portal (publishedVersion)
  • Socio-Environmental Systems Modeling (acceptedVersion)
  • TU/e Research Portal (submittedVersion)
  • Research Publications (Maastricht University) (submittedVersion, other-oa)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Funders
  • Koninklijke Nederlandse Akademie van Wetenschappen
  • Eidgenössische Technische Hochschule Zürich
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
type 2 diabetes, mitochondrial dysfunction, intramyocellular lipid, insulin resistance, skeletal muscle, obesity, insulin sensitivity, fasting blood glucose, HbA1c
MeSH terms
Aged, Blood Glucose, Diabetes Mellitus, Type 2, Humans, Insulin, Insulin Resistance, Male, Middle Aged, Mitochondria, Muscle, Magnetic Resonance Spectroscopy, Obesity, Phosphocreatine, Phosphorus Isotopes, Body Mass Index, Case-Control Studies, Muscle, Skeletal, Lipid Metabolism

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