Emerging role of Akt kinase/protein kinase B signaling in pathophysiology of diabetes and its complications
- PMID: 15717836
- DOI: 10.33549/physiolres.930582
Emerging role of Akt kinase/protein kinase B signaling in pathophysiology of diabetes and its complications
Abstract
In addition to a number of deleterious effects on cellular integrity and functions, diabetic metabolic milieu has been implicated in a rapidly growing number of alterations in signal transduction. In this review we focus on Akt kinase physiology, its alterations in diabetes mellitus (DM), and on the emerging role of this signaling system in the pathophysiology of diabetic microvascular complications. Studies focusing on Akt in diabetes suggest both decrease and increase of Akt activity in DM. Alterations of Akt activity have been found in various tissues and cells in diabetes depending on experimental and clinical contexts. There is convincing evidence suggesting defective Akt signaling in the development of insulin resistance. Similar defects, as in insulin-sensitive tissues, have been reported in endothelia of DM Type 2 models, possibly contributing to the development of endothelial dysfunction under these conditions. In contrast, Akt activity is increased in some tissues and vascular beds affected by complications in DM Type 1. Identification of the role of this phenomenon in DM-induced growth and hemodynamic alterations in affected vascular beds remains one of the major challenges for future research in this area. Future studies should include the evaluation of therapeutical benefits of pharmacological modulators of Akt activity.
Similar articles
-
Decreased Akt kinase activity and insulin resistance in C57BL/KsJ-Leprdb/db mice.J Endocrinol. 2000 Oct;167(1):107-15. doi: 10.1677/joe.0.1670107. J Endocrinol. 2000. PMID: 11018758
-
Diminished penile expression of vascular endothelial growth factor and its receptors at the insulin-resistant stage of a type II diabetic rat model: a possible cause for erectile dysfunction in diabetes.J Mol Endocrinol. 2003 Dec;31(3):401-18. doi: 10.1677/jme.0.0310401. J Mol Endocrinol. 2003. PMID: 14664702
-
The PI3-K/Akt pathway: roles related to alterations in vasomotor responses in diabetic models.J Smooth Muscle Res. 2005 Dec;41(6):283-302. doi: 10.1540/jsmr.41.283. J Smooth Muscle Res. 2005. PMID: 16557003 Review.
-
Effect of thrombin fragment (TP508) on myocardial ischemia reperfusion injury in a model of type 1 diabetes mellitus.Circulation. 2010 Sep 14;122(11 Suppl):S162-9. doi: 10.1161/CIRCULATIONAHA.109.928374. Circulation. 2010. PMID: 20837908 Free PMC article.
-
The regulation and activities of the multifunctional serine/threonine kinase Akt/PKB.Exp Cell Res. 1999 Nov 25;253(1):210-29. doi: 10.1006/excr.1999.4690. Exp Cell Res. 1999. PMID: 10579924 Review.
Cited by
-
Akt deficiency attenuates muscle size and function but not the response to ActRIIB inhibition.PLoS One. 2010 Sep 15;5(9):e12707. doi: 10.1371/journal.pone.0012707. PLoS One. 2010. PMID: 20856813 Free PMC article.
-
Fuzhu jiangtang granules combined with metformin reduces insulin resistance in skeletal muscle of diabetic rats via PI3K/Akt signaling.Pharm Biol. 2019 Dec;57(1):660-668. doi: 10.1080/13880209.2019.1659831. Pharm Biol. 2019. PMID: 31545909 Free PMC article.
-
Norovirus RNA-dependent RNA polymerase is phosphorylated by an important survival kinase, Akt.J Virol. 2011 Oct;85(20):10894-8. doi: 10.1128/JVI.05562-11. Epub 2011 Aug 17. J Virol. 2011. PMID: 21849454 Free PMC article.
-
Therapeutic approaches _targeting molecular signaling pathways common to diabetes, lung diseases and cancer.Adv Drug Deliv Rev. 2021 Nov;178:113918. doi: 10.1016/j.addr.2021.113918. Epub 2021 Aug 8. Adv Drug Deliv Rev. 2021. PMID: 34375681 Free PMC article. Review.
-
A Drosophila model of insulin resistance associated with the human TRIB3 Q/R polymorphism.Dis Model Mech. 2017 Dec 19;10(12):1453-1464. doi: 10.1242/dmm.030619. Dis Model Mech. 2017. PMID: 29025897 Free PMC article.
Publication types
MeSH terms
Substances
LinkOut - more resources
Full Text Sources
Other Literature Sources
Medical
Miscellaneous