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Profiling of cell stress protein expression in cardiac tissue of cardiosurgical patients undergoing remote ischemic preconditioning: implications for thioredoxin in cardioprotection

Overview of attention for article published in Journal of Translational Medicine, January 2015
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Title
Profiling of cell stress protein expression in cardiac tissue of cardiosurgical patients undergoing remote ischemic preconditioning: implications for thioredoxin in cardioprotection
Published in
Journal of Translational Medicine, January 2015
DOI 10.1186/s12967-015-0403-6
Pubmed ID
Authors

Karina Zitta, Patrick Meybohm, Matthias Gruenewald, Jochen Cremer, Kai D Zacharowski, Jens Scholz, Markus Steinfath, Martin Albrecht

Abstract

BackgroundTransient episodes of ischemia in a remote organ (remote ischemic preconditioning, RIPC) can attenuate myocardial ischemia/reperfusion injury but the underlying mechanisms of RIPC in the target organ are still poorly understood. Recent animal studies suggested that the small redox protein thioredoxin may be a potential candidate for preconditioning-induced organprotection. Here we employed a human proteome profiler array to investigate the RIPC regulated expression of cell stress proteins and particularly of thioredoxin in heart tissue of cardiosurgical patients with cardiopulmonary bypass (CPB).MethodsRIPC was induced by four 5 minute cycles of transient upper limb ischemia/reperfusion using a blood pressure cuff. Right atrial tissue was obtained from patients receiving RIPC (N¿=¿19) and control patients (N¿=¿19) before and after CPB. Cell stress proteome profiler arrays as well as Westernblotting and ELISA experiments for thioredoxin (Thio-1) were performed employing the respective tissue samples.ResultsProtein arrays revealed an up-regulation of 26.9% (7/26; CA IX, Cyt C, HSP-60, HSP-70, pJNK, SOD2, Thio-1) of cell stress associated proteins in RIPC tissue obtained before CPB, while 3.8% (1/26; SIRT2) of the proteins were down-regulated. Array results for thioredoxin were verified by semi-quantitative Westernblotting studies which showed a significant up-regulation of thioredoxin protein levels in cardiac tissue samples of RIPC patients taken before CPB (RIPC: 5.36¿±¿0.85 a.u.; control: 3.23¿±¿0.39 a.u.; P¿<¿0.05). Quantification of thioredoxin levels in tissue of RIPC and control patients by ELISA experiments further confirmed the Westernblotting results (RIPC: 0.30¿±¿0.02 ng/mg protein; control: 0.24¿±¿0.02 ng/mg protein; P¿<¿0.05).ConclusionWe provide evidence for thioredoxin as a RIPC-induced factor in heart tissue of cardiosurgical patients and identified several cell stress associated proteins that are regulated by RIPC and may play a role in RIPC-mediated cardioprotection.

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Mendeley readers

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The data shown below were compiled from readership statistics for 23 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 1 4%
Unknown 22 96%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 4 17%
Student > Doctoral Student 3 13%
Student > Bachelor 2 9%
Professor 2 9%
Student > Master 2 9%
Other 3 13%
Unknown 7 30%
Readers by discipline Count As %
Medicine and Dentistry 9 39%
Agricultural and Biological Sciences 2 9%
Sports and Recreations 2 9%
Biochemistry, Genetics and Molecular Biology 1 4%
Psychology 1 4%
Other 0 0%
Unknown 8 35%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 27 January 2015.
All research outputs
#22,047,018
of 24,598,501 outputs
Outputs from Journal of Translational Medicine
#3,699
of 4,425 outputs
Outputs of similar age
#309,659
of 362,914 outputs
Outputs of similar age from Journal of Translational Medicine
#92
of 111 outputs
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