PMID- 30633874 OWN - NLM STAT- MEDLINE DCOM- 20200108 LR - 20200214 IS - 1095-8584 (Electronic) IS - 0022-2828 (Linking) VI - 127 DP - 2019 Feb TI - CaMKII signaling in heart diseases: Emerging role in diabetic cardiomyopathy. PG - 246-259 LID - S0022-2828(19)30009-4 [pii] LID - 10.1016/j.yjmcc.2019.01.001 [doi] AB - Calcium/calmodulin-dependent protein kinase II (CaMKII) is upregulated in diabetes and significantly contributes to cardiac remodeling with increased risk of cardiac arrhythmias. Diabetes is frequently associated with atrial fibrillation, coronary artery disease, and heart failure, which may further enhance CaMKII. Activation of CaMKII occurs downstream of neurohormonal stimulation (e.g. via G-protein coupled receptors) and involve various posttranslational modifications including autophosphorylation, oxidation, S-nitrosylation and O-GlcNAcylation. CaMKII signaling regulates diverse cellular processes in a spatiotemporal manner including excitation-contraction and excitation-transcription coupling, mechanics and energetics in cardiac myocytes. Chronic activation of CaMKII results in cellular remodeling and ultimately arrhythmogenic alterations in Ca(2+) handling, ion channels, cell-to-cell coupling and metabolism. This review addresses the detrimental effects of the upregulated CaMKII signaling to enhance the arrhythmogenic substrate and trigger mechanisms in the heart. We also briefly summarize preclinical studies using kinase inhibitors and genetically modified mice targeting CaMKII in diabetes. The mechanistic understanding of CaMKII signaling, cardiac remodeling and arrhythmia mechanisms may reveal new therapeutic targets and ultimately better treatment in diabetes and heart disease in general. CI - Copyright (c) 2019. Published by Elsevier Ltd. FAU - Hegyi, Bence AU - Hegyi B AD - Department of Pharmacology, University of California Davis, Davis, CA, USA. FAU - Bers, Donald M AU - Bers DM AD - Department of Pharmacology, University of California Davis, Davis, CA, USA. Electronic address: dmbers@ucdavis.edu. FAU - Bossuyt, Julie AU - Bossuyt J AD - Department of Pharmacology, University of California Davis, Davis, CA, USA. LA - eng GR - P01 HL080101/HL/NHLBI NIH HHS/United States GR - R01 HL030077/HL/NHLBI NIH HHS/United States GR - R01 HL142282/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Review DEP - 20190108 PL - England TA - J Mol Cell Cardiol JT - Journal of molecular and cellular cardiology JID - 0262322 RN - 0 (Ion Channels) RN - EC 2.7.11.17 (Calcium-Calmodulin-Dependent Protein Kinase Type 2) RN - SY7Q814VUP (Calcium) SB - IM MH - Animals MH - Calcium/metabolism MH - Calcium-Calmodulin-Dependent Protein Kinase Type 2/chemistry/*metabolism MH - Diabetic Cardiomyopathies/*enzymology MH - Humans MH - Ion Channels/metabolism MH - Mitochondria, Heart/metabolism MH - *Signal Transduction OTO - NOTNLM OT - Arrhythmias OT - Calcium/calmodulin-dependent protein kinase II OT - Diabetes OT - Excitation-contraction coupling OT - Heart OT - Posttranslational modifications EDAT- 2019/01/12 06:00 MHDA- 2020/01/09 06:00 CRDT- 2019/01/12 06:00 PHST- 2018/12/27 00:00 [received] PHST- 2019/01/04 00:00 [accepted] PHST- 2019/01/12 06:00 [pubmed] PHST- 2020/01/09 06:00 [medline] PHST- 2019/01/12 06:00 [entrez] AID - S0022-2828(19)30009-4 [pii] AID - 10.1016/j.yjmcc.2019.01.001 [doi] PST - ppublish SO - J Mol Cell Cardiol. 2019 Feb;127:246-259. doi: 10.1016/j.yjmcc.2019.01.001. Epub 2019 Jan 8.