Cited by 443Adipokines, Inflammation, and Metabolic DiseasesMetabolism, Diabetes, and CancerAdipose Tissue and Metabolism

Mechanism of Insulin Resistance in A-ZIP/F-1 Fatless Mice

Open access
Kim, Jason K., Gavrilova, Oksana, Chen, Yan, Reitman, Marc L., Shulman, Gerald I.·2000·Journal of Biological Chemistry

Abstract

Insulin resistance is a major factor in the pathogenesis of type 2 diabetes and may be related to alterations in fat metabolism. Fatless mice have been created using dominant-negative protein (A-ZIP/F-1) targeted gene expression in the adipocyte and shown to develop diabetes. To understand the mechanism responsible for the insulin resistance in these mice, we conducted hyperinsulinemic-euglycemic clamps in awake fatless and wild type littermates before the development of diabetes and examined insulin action and signaling in muscle and liver. We found the fatless mice to be severely insulin-resistant, which could be attributed to defects in insulin action in muscle and liver. Both of these abnormalities were associated with defects in insulin activation of insulin receptor substrate-1 and -2-associated phosphatidylinositol 3-kinase activity and a 2-fold increase in muscle and liver triglyceride content. We also show that upon transplantation of fat tissue into these mice, triglyceride content in muscle and liver returned to normal as does insulin signaling and action. In conclusion, these results suggest that the development of insulin resistance in type 2 diabetes may be due to alterations in the partitioning of fat between the adipocyte and muscle/liver leading to accumulation of triglyceride in the latter tissues with subsequent impairment of insulin signaling and action.

Integrity signals

Registry

Crossref · 10.1074/jbc.275.12.8456

Cites

31 of 31 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

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?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Kim, J. K., Gavrilova, O., Chen, Y., Reitman, M. L., & Shulman, G. I.
Affiliations
  • Howard Hughes Medical Institute (US)
  • National Institutes of Health (US)
Corresponding author
Shulman, Gerald I.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2000-03
Volume
275
Issue
12
Pages
8456-8460
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2111445543
Cited by
443
References
30
Citations by year
2026: 3 · 2025: 3 · 2024: 7 · 2023: 4 · 2022: 8 · 2021: 13 · 2020: 12 · 2019: 15 · 2018: 10 · 2017: 19 · 2016: 18 · 2015: 18 · 2014: 14 · 2013: 19 · 2012: 17
FWCI
25.12
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Eli Lilly and Company
  • National Institute of Diabetes and Digestive and Kidney Diseases (P30DK45735, R01-DK40936, R01DK040936, P30DK045735)
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
insulin resistance, type 2 diabetes, IRS-1, insulin receptor substrate 2, phosphatidylinositol 3-kinase, insulin signaling, liver triglyceride accumulation, fat partitioning, fat transplantation, hyperinsulinemic-euglycemic clamp
MeSH terms
Adipose Tissue, Animals, Body Composition, Insulin, Insulin Resistance, Liver, Mice, Mutant Strains, Mice, Transgenic, Muscles, Phosphoproteins, Transcription Factors, Glucose Clamp Technique, Phosphatidylinositol 3-Kinases, Intracellular Signaling Peptides and Proteins, Mice, Insulin Receptor Substrate Proteins

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