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Cited by 101Growth Hormone and Insulin-like Growth FactorsDiabetes, Cardiovascular Risks, and LipoproteinsLipid metabolism and disorders

The DOI matches its Crossref record; 50 of the 51 references it cites were found in a registry or an index.

Growth hormone-induced insulin resistance is associated with increased intramyocellular triglyceride content but unaltered VLDL-triglyceride kinetics

Krag, Morten B., Gormsen, Lars C., Guo, ZengKui, Christiansen, Jens S., Jensen, Michael D., Nielsen, Søren, Jørgensen, Jens O. L.·2007·American Journal of Physiology-Endocrinology and Metabolism
DOI 10.1152/ajpendo.00374.2006
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Abstract

The ability of growth hormone (GH) to stimulate lipolysis and cause insulin resistance in skeletal muscle may be causally linked, but the mechanisms remain obscure. We investigated the impact of GH on the turnover of FFA and VLDL-TG, intramuscular triglyceride content (IMTG), and insulin sensitivity (euglycemic clamp) in nine healthy men in a randomized double-blind placebo-controlled crossover study after 8 days treatment with (A) Placebo+Placebo, (B) GH (2 mg daily)+Placebo, and (C) GH (2 mg daily)+Acipimox (250 mgx3 daily). In the basal state, GH (B) increased FFA levels (P<0.05), palmitate turnover (P<0.05), and lipid oxidation (P=0.05), but VLDL-TG kinetics were unaffected. Administration of acipimox (C) suppressed basal lipolysis but did not influence VLDL-TG kinetics. In the basal state, IMTG content increased after GH (B; P=0.03). Insulin resistance was induced by GH irrespective of concomitant acipimox (P<0.001). The turnover of FFA and VLDL-TG was suppressed by hyperinsulinemia during placebo and GH, whereas coadministration of acipimox induced a rebound increase FFA turnover and VLDL-TG clearance. We conclude that these results show that GH-induced insulin resistance is associated with increased IMTG and unaltered VLDL-TG kinetics; we hypothesize that fat oxidation in muscle tissue is an important primary effect of GH and that circulating FFA rather than VLDL-TG constitute the major source for this process; and the role of IMTG in the development of GH-induced insulin resistance merits future research.

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Crossref · 10.1152/ajpendo.00374.2006

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  1. 10.1210/jcem.86.12.8075 · DOI · Paper page

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Metadata

Authors
Krag, M. B., Gormsen, L. C., Guo, Z., Christiansen, J. S., Jensen, M. D., Nielsen, S., & Jørgensen, J. O. L.
Affiliations
  • Aarhus University Hospital (DK)
  • Aarhus University (DK)
ORCID
Venue
American Journal of Physiology-Endocrinology and Metabolism
Publisher
American Physiological Society
Published
2007-03
Volume
292
Issue
3
Pages
E920-E927
ISSN
  • 0193-1849 (ISSN-L)
  • 1522-1555
DOI
10.1152/ajpendo.00374.2006
OpenAlex
W2135012391
Cited by
101
References
51
Citations by year
2026: 2 · 2025: 4 · 2024: 2 · 2023: 7 · 2022: 2 · 2021: 5 · 2020: 2 · 2019: 7 · 2018: 3 · 2017: 1 · 2016: 1 · 2015: 6 · 2014: 8 · 2013: 7 · 2012: 9
FWCI
5.91
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Endocrinology and Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
Novo Nordisk
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
Keywords
growth hormone, insulin resistance, intramyocellular triglyceride, free fatty acid turnover, acipimox, lipolysis, hyperinsulinemic-euglycemic clamp, fat oxidation
MeSH terms
Adult, Body Weight, Calorimetry, Indirect, Fatty Acids, Nonesterified, Glucose, Humans, Insulin Resistance, Insulin-Like Growth Factor I, Lipoproteins, VLDL, Male, Placebos, Growth Hormone, Triglycerides, Muscle Fibers, Skeletal

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