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- Title
Cytoprotective effects of transgenic neuroglobin overexpression in an acute and chronic mouse model of ischemic heart disease.
- Authors
Luyckx, Evi; Everaert, Bert R.; Van der Veken, Bieke; Van Leuven, Wendy; Timmermans, Jean-Pierre; Vrints, Christiaan J.; De Meyer, Guido R. Y.; Martinet, Wim; Dewilde, Sylvia
- Abstract
Neuroglobin (NGB) is an oxygen-binding protein that is mainly expressed in nervous tissues where it is considered to be neuroprotective during ischemic brain injury. Interestingly, transgenic mice overexpressing NGB reveal cytoprotective effects on tissues lacking endogenous NGB, which might indicate a therapeutic role for NGB in a broad range of ischemic conditions. In the present study, we investigated the effect of NGB overexpression on survival as well as on the size and occurrence of myocardial infarctions (MI) in a mouse model of acute MI (AMI) and a model of advanced atherosclerosis ( ApoE Fbn1 mice), in which coronary plaques and MI develop in mice being fed a Western-type diet. Overexpression of NGB significantly enhanced post-AMI survival and reduced MI size by 14% 1 week after AMI. Gene expression analysis of the infarction border showed reduction of tissue hypoxia and attenuation of hypoxia-induced inflammatory pathways, which might be responsible for these beneficial effects. In contrast, NGB overexpression did not affect survival or occurrence of MI in the atherosclerotic mice although the incidence of coronary plaques was significantly reduced. In conclusion, NGB proved to act cytoprotectively during MI in the acute setting while this effect was less pronounced in the atherosclerosis model.
- Subjects
CORONARY disease; CYTOPROTECTION; GENETIC overexpression; LABORATORY mice; CARRIER proteins
- Publication
Heart & Vessels, 2018, Vol 33, Issue 1, p80
- ISSN
0910-8327
- Publication type
Article
- DOI
10.1007/s00380-017-1065-5