Cited by 126Liver Disease Diagnosis and TreatmentDiabetes, Cardiovascular Risks, and LipoproteinsDiet, Metabolism, and Disease

Tissue specificity of insulin resistance in humans: fat in the liver rather than muscle is associated with features of the metabolic syndrome.

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Kotronen, A., Seppälä-Lindroos, A., Bergholm, R., Yki-Järvinen, H.·2007·Diabetologia

Abstract

Aims/hypothesis The aim of this study was to investigate whether intrahepatic and intramyocellular fat are related to insulin resistance in these respective tissues or to the metabolic syndrome.Methods Hepatic (insulin 1.8 pmol kg(-1) min(-1) combined with [3-3H]glucose) and muscle (insulin 6.0 pmol kg(-1) min(-1)) insulin sensitivity were measured on separate occasions in 45 non-diabetic men (age 42 +/- 1 years, BMI 26.2 +/- 0.6 kg/m2) using the euglycaemic-hyperinsulinaemic clamp. Liver fat and intramyocellular lipid (IMCL) were measured by proton magnetic resonance spectroscopy and body composition by magnetic resonance imaging. We also determined fasting serum insulin and adiponectin concentrations, components of the metabolic syndrome and maximal oxygen consumption.Results In participants with high [median 12.0% (interquartile range 5.7-18.5%)] vs low [2.0% (1.0-2.0%)] liver fat, fasting serum triacylglycerols (1.6 +/- 0.2 vs 1.0 +/- 0.1 mmol/l, p = 0.002) and fasting serum insulin (55 +/- 4 vs 32 +/- 2 pmol/l, p < 0.0001) were increased and serum HDL-cholesterol (1.26 +/- 0.1 vs 1.48 +/- 0.1 mmol/l, p = 0.02) and fasting serum adiponectin (9.5 +/- 1.2 vs 12.2 +/- 1.2 microg/ml, p = 0.05) decreased. In participants with high [19.5% (16.0-26.0%)] vs low [5.0% (2.3-7.5%)] IMCL, these parameters were comparable. Liver fat was higher in participants with [10.5% (3.0-18.0%)] than in those without [2.0% (1.5-6.0%), p = 0.010] the metabolic syndrome, even independently of obesity, while IMCL was comparable. Insulin suppression of glucose rate of appearance and serum NEFA was significantly impaired in the high liver fat group.Conclusions/interpretation Fat accumulation in the liver rather than in skeletal muscle is associated with features of the metabolic syndrome, i.e. increased fasting serum triacylglycerols and decreased fasting serum HDL-cholesterol, as well as with hyperinsulinaemia and low adiponectin.

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  • Lipid accumulation in hepatocytes is linked to insulin resistance and the development of type 2 diabetes.

    “Lipid accumulation in hepatocytes has been linked to insulin resistance and the development of T2DM158.”
  • Recent human data have highlighted the importance of disordered hepatic metabolism, including inappropriately increased hepatic glucose production, hyperlipidemia, and lipid accumulation, in both obesity and type 2 DM.

    “Recent human data have highlighted the importance of disordered hepatic metabolism, including inappropriately increased hepatic glucose production, hyperlipidemia, and lipid accumulation, in both obesity and type 2 DM (207).”
  • Accumulation of lipid within hepatocytes is a key marker of insulin resistance in humans and a major contributor to nonalcoholic fatty liver disease, nonalcoholic steatohepatitis (NASH), and cirrhosis.

    “Because accumulation of lipid within hepatocytes is a key marker of insulin resistance in humans (207) and a major contributor to nonalcoholic fatty liver disease, nonalcoholic steatohepatitis (NASH), and cirrhosis, we will first consider relationships between hepatic lipid metabolism and insulin resistance, and in Section III.C.3 will review evidence linking DM and hepatic steatosis to”

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Authors
Kotronen, A., Seppälä-Lindroos, A., Bergholm, R., & Yki-Järvinen, H.
Affiliations
University of Helsinki (FI)
Corresponding author
Kotronen, A.
Venue
Diabetologia
Published
2007-11-16
Volume
51
Issue
1
Pages
130-138
ISSN
  • 0012-186X (ISSN-L)
  • 1432-0428
OpenAlex
W2053697048
Cited by
126
References
47
Citations by year
2026: 1 · 2025: 3 · 2024: 5 · 2023: 3 · 2022: 3 · 2021: 5 · 2020: 6 · 2019: 5 · 2018: 8 · 2017: 8 · 2016: 11 · 2015: 5 · 2014: 7 · 2013: 12 · 2012: 9
FWCI
6.41
Type
journal article
Language
en
Open access
Locations
  • Diabetologia (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • European Commission (LSHM‐CT‐2005‐018734)
  • Academy of Finland
  • Novo Nordisk
Topics
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diet, Metabolism, and Disease
Keywords
insulin resistance, liver fat, intramyocellular lipid, tissue specificity, metabolic syndrome, insulin sensitivity, hepatic insulin sensitivity, skeletal muscle insulin sensitivity, adiponectin, HDL cholesterol, triglycerides, free fatty acids, hyperinsulinemic-euglycemic clamp, 1H NMR, body composition, VO2max
MeSH terms
Adult, Body Composition, Cholesterol, Glucose, Humans, Insulin, Insulin Resistance, Liver, Male, Middle Aged, Muscles, Magnetic Resonance Spectroscopy, Obesity, Body Mass Index, Metabolic Syndrome

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