Cited by 1,264Diabetes, Cardiovascular Risks, and LipoproteinsAdvanced MRI Techniques and ApplicationsLiver Disease Diagnosis and Treatment

Intramyocellular lipid concentrations are correlated with insulin sensitivity in humans: a 1 H NMR spectroscopy study

Open access
Krssak, M., Falk Petersen, K., Dresner, A., DiPietro, L., Vogel, S. M., Rothman, D. L., Shulman, G. I., Roden, M.·1999·Diabetologia

Abstract

Recent muscle biopsy studies have shown a relation between intramuscular lipid content and insulin resistance. The aim of this study was to test this relation in humans by using a novel proton nuclear magnetic resonance (1H NMR) spectroscopy technique, which enables non-invasive and rapid (approximately 45 min) determination of intramyocellular lipid (IMCL) content. Normal weight non-diabetic adults (n = 23, age 29+/-2 years. BMI = 24.1+/-0.5 kg/m2) were studied using cross-sectional analysis. Insulin sensitivity was assessed by a 2-h hyperinsulinaemic (approximately 450 pmol/l)-euglycaemic (approximately 5 mmol/l) clamp test. Intramyocellular lipid concentrations were determined by using localized 1H NMR spectroscopy of soleus muscle. Simple linear regression analysis showed an inverse correlation (r = -0.579, p = 0.0037) [corrected] between intramyocellular lipid content and M-value (100-120 min of clamp) as well as between fasting plasma non-esterified fatty acid concentration and M-value (r = -0.54, p = 0.0267). Intramyocellular lipid content was not related to BMI, age and fasting plasma concentrations of triglycerides, non-esterified fatty acids, glucose or insulin. These results show that intramyocellular lipid concentration, as assessed non invasively by localized 1H NMR spectroscopy, is a good indicator of whole body insulin sensitivity in non-diabetic, non-obese humans.

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 · 10.1007/s001250051123

Cites

14 of 14 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?

  • Variables pertaining to body-fat composition and lipid metabolism probably contribute to the metabolic abnormalities associated with obesity.

    “Even small amounts of weight loss induced by a negative energy balance affects many variables pertaining to body-fat composition and lipid metabolism -variables that probably contribute to the metabolic abnormalities associated with obesity.[22][23][24][25]”
  • Even small amounts of weight loss induced by a negative energy balance affect many variables pertaining to body-fat composition and lipid metabolism.

    “Even small amounts of weight loss induced by a negative energy balance affects many variables pertaining to body-fat composition and lipid metabolism -variables that probably contribute to the metabolic abnormalities associated with obesity.[22][23][24][25]”

    From Absence of an Effect of Liposuction on Insulin Action and Risk Factors for Coronary Heart Disease (2004) · cites this paper as [23]

    The Rapid communication Abstract describes a cross-sectional study of intramyocellular lipids and insulin sensitivity in normal-weight adults; the Discussion addresses their correlation. Searches for weight loss, negative energy balance, and energy restriction found no passage saying that small weight losses affect body-fat composition or lipid metabolism. Page numbers were not provided in our copy. (LLM, conf=0.77)

    Experimental — accuracy not yet measured
  • Intramyocellular lipid contributes only about 1% of total muscle fat content but has a key role in skeletal muscle insulin resistance compared with extramyocellular lipid.

    “More recent studies [55, 56] using magnetic resonance spectroscopy have demonstrated that although IMCL fat content contributes only a small fraction (~1%) to the total muscle fat content, it plays a key role in the development of insulin resistance in skeletal muscle compared to EMCL.”

    From Pathogenesis of insulin resistance in skeletal muscle (2010) · cites this paper as [56]

  • Muscle insulin resistance correlates strongly with intramyocellular lipid independently of total body fat mass and diabetes status, whereas the correlation with extramyocellular lipid is not significant.

    “Muscle insulin resistance strongly correlates with IMCL, independent of total body fat mass and diabetes status [56], while the correlation between EMCL and insulin ressitance is not significant.”

    From Pathogenesis of insulin resistance in skeletal muscle (2010) · cites this paper as [56]

  • In insulin-resistant individuals, insulin-stimulated glucose disposal correlates more strongly with intramyocellular fat content than with extramyocellular fat.

    “(i) in insulin resistant individuals, insulin-stimulated glucose disposal correlates more strongly with intramyocellar fat content than with the extramtocellar fat [55, 56];”

    From Pathogenesis of insulin resistance in skeletal muscle (2010) · cites this paper as [56]

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
Krssak, M., Falk Petersen, K., Dresner, A., DiPietro, L., Vogel, S. M., Rothman, D. L., Shulman, G. I., & Roden, M.
Affiliations
  • Yale University (US)
  • Howard Hughes Medical Institute (US)
  • University of Vienna (AT)
Venue
Diabetologia
Published
1999-01-11
Volume
42
Issue
1
Pages
113-116
ISSN
  • 0012-186X (ISSN-L)
  • 1432-0428
OpenAlex
W2092441434
Cited by
1,264
References
13
Citations by year
2026: 10 · 2025: 17 · 2024: 19 · 2023: 19 · 2022: 21 · 2021: 38 · 2020: 40 · 2019: 39 · 2018: 49 · 2017: 51 · 2016: 51 · 2015: 64 · 2014: 51 · 2013: 52 · 2012: 59
FWCI
22.58
Type
journal article
Language
en
Open access
Locations
  • Diabetologia (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Howard Hughes Medical Institute
  • Yale University
  • Universität Wien
  • Oesterreichische Nationalbank
  • National Institutes of Health (P30 DK)
  • U.S. Public Health Service
  • National Institute on Aging (5 P60 AG 10469, P60AG010469)
  • National Institute of Diabetes and Digestive and Kidney Diseases (P30DK45735, R01DK049230, R01 DK-49230, P30DK045735)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
Keywords
intramyocellular lipid, insulin sensitivity, insulin resistance, hyperinsulinemic-euglycemic clamp, free fatty acids, soleus muscle, whole-body insulin sensitivity
MeSH terms
Adult, Blood Glucose, Fasting, Fatty Acids, Nonesterified, Female, Humans, Hydrogen, Infusions, Intravenous, Insulin, Male, Magnetic Resonance Spectroscopy, Regression Analysis, Triglycerides, Glucose Clamp Technique, Muscle, Skeletal, Lipid Metabolism

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