The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
Enhanced Basal Activation of Mitogen-Activated Protein Kinases in Adipocytes From Type 2 Diabetes
Abstract
Serine and threonine kinases may contribute to insulin resistance and the development of type 2 diabetes. To test the potential for members of the mitogen-activated protein (MAP) kinase family to contribute to type 2 diabetes, we examined basal and insulin-stimulated Erk 1/2, JNK, and p38 phosphorylation in adipocytes isolated from healthy and type 2 diabetic individuals. Maximal insulin stimulation increased the phosphorylation of Erk 1/2 and JNK in healthy control subjects but not type 2 diabetic patients. Insulin stimulation did not increase p38 phosphorylation in either healthy control subjects or type 2 diabetic patients. In type 2 diabetic adipocytes, the basal phosphorylation status of these MAP kinases was significantly elevated and was associated with decreased IRS-1 and GLUT4 in these fat cells. To determine whether MAP kinases were involved in the downregulation of IRS-1 and GLUT4 protein levels, selective inhibitors were used to inhibit these MAP kinases in 3T3-L1 adipocytes treated chronically with insulin. Inhibition of Erk 1/2, JNK, or p38 had no effect on insulin-stimulated reduction of IRS-1 protein levels. However, inhibition of the p38 pathway prevented the insulin-stimulated decrease in GLUT4 protein levels. In summary, type 2 diabetes is associated with an increased basal activation of the MAP kinase family. Furthermore, upregulation of the p38 pathway might contribute to the loss of GLUT4 expression observed in adipose tissue from type 2 diabetic patients.
Overview
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.
Integrity signals
Registry
Cites
Statistics
Verification
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.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Global and societal implications of the diabetes epidemic
Zimmet, P., Alberti, K. G. M. M., & Shaw, J. (2001) · Nature · doi:10.1038/414782a · Cited by 5,883
Structure of the insulin receptor substrate IRS-1 defines a unique signal transduction protein
Sun, X. J., Rothenberg, P., Kahn, C. R., Backer, J. M., Araki, E., Wilden, P. A., Cahill, D. A., Goldstein, B. J., & White, M. F. (1991) · Nature · doi:10.1038/352073a0 · Cited by 1,574
Aguirre, V., Uchida, T., Yenush, L., Davis, R., & White, M. F. (2000) · Journal of Biological Chemistry · doi:10.1074/jbc.275.12.9047 · Cited by 1,487
Alternative pathway of insulin signalling in mice with targeted disruption of the IRS-1 gene
Araki, E., Lipes, M. A., Patti, M.-E., Brüning, J. C., Haag III, B., Johnson, R. S., & Kahn, C. R. (1994) · Nature · doi:10.1038/372186a0 · Cited by 1,252
Cusi, K., Maezono, K., Osman, A., Pendergrass, M., Patti, M. E., Pratipanawatr, T., DeFronzo, R. A., Kahn, C. R., & Mandarino, L. J. (2000) · Journal of Clinical Investigation · doi:10.1172/jci7535 · Cited by 1,139
Krook, A., Björnholm, M., Galuska, D., Jiang, X. J., Fahlman, R., Myers, M. G., Wallberg-Henriksson, H., & Zierath, J. R. (2000) · Diabetes · doi:10.2337/diabetes.49.2.284 · Cited by 375 · cited 1×
“, the phosphatidylinositol 3 [PI3] kinase and protein kinase B/AKT pathway) (22,23).”
BackgroundPessler, D., Rudich, A., & Bashan, N. (2001) · Diabetologia · doi:10.1007/s001250100024 · Cited by 82 · cited 3×
“Factors such as cAMP (35), oxidative stress (36), and numerous cytokines and interleukins (34) have been shown to decrease GLUT4 protein in 3T3-L1 adipocytes and activate p38 in other cell systems (36 and references therein).”
Background
Cited by
Critical nodes in signalling pathways: insights into insulin action
Taniguchi, C. M., Emanuelli, B., & Kahn, C. R. (2006) · Nature Reviews Molecular Cell Biology · doi:10.1038/nrm1837 · Cited by 2,760
Azziz, R., Carmina, E., Chen, Z., Dunaif, A., Laven, J. S. E., Legro, R. S., Lizneva, D., Natterson-Horowtiz, B., Teede, H. J., & Yildiz, B. O. (2016) · Nature Reviews Disease Primers · doi:10.1038/nrdp.2016.57 · Cited by 2,005
Positive and negative regulation of insulin signaling through IRS-1 phosphorylation
Gual, P., Le Marchand-Brustel, Y., & Tanti, J.-F. (2005) · Biochimie · doi:10.1016/j.biochi.2004.10.019 · Cited by 912
The macrophage switch in obesity development
Castoldi, A., Naffah de Souza, C., Câmara, N. O. S., & Moraes-Vieira, P. M. (2016) · Frontiers in Immunology · doi:10.3389/fimmu.2015.00637 · Cited by 575
Proposed mechanisms for the induction of insulin resistance by oxidative stress
Bloch-Damti, A., & Bashan, N. (2005) · Antioxidants & Redox Signaling · doi:10.1089/ars.2005.7.1553 · Cited by 388
Metadata
- Authors
- Carlson, C. J., Koterski, S., Sciotti, R. J., Poccard, G. B., & Rondinone, C. M.
- Venue
- Diabetes
- Publisher
- American Diabetes Association
- Published
- 2003-03-01
- Volume
- 52
- Issue
- 3
- Pages
- 634-641
- ISSN
- 0012-1797 (ISSN-L)
- 1939-327X
- OpenAlex
- W2098781003
- Cited by
- 225
- References
- 7
- FWCI
- 12.33
- Type
- journal article
- Language
- en
- Open access
- closed
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
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Enhanced Basal Activation of Mitogen-Activated Protein Kinases in Adipocytes From Type 2 Diabetes. https://app.cochat.ai/papers/10.2337/diabetes.52.3.634
- The paper
- Carlson, C. J., Koterski, S., Sciotti, R. J., Poccard, G. B., & Rondinone, C. M. (2003). Enhanced Basal Activation of Mitogen-Activated Protein Kinases in Adipocytes From Type 2 Diabetes. Diabetes. https://doi.org/10.2337/diabetes.52.3.634
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
