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Experimental cardiac radiation exposure induces ventricular diastolic dysfunction with preserved ejection fraction
Breast cancer radiotherapy increases the risk of heart failure with preserved ejection fraction (HFpEF). Cardiomyocytes are highly radioresistant, but radiation specifically affects coronary microvascular endothelial cells, with subsequent microvascular inflammation and rarefaction. The effects of radiation on left ventricular (LV) diastolic function are poorly characterized. We hypothesized that cardiac radiation exposure may result in diastolic dysfunction without reduced EF. Global cardiac expression of the sodium-iodide symporter (NIS) was induced by cardiotropic gene (adeno-associated virus serotype 9) delivery to 5-w...
Source: AJP: Heart and Circulatory Physiology - August 11, 2017 Category: Cardiology Authors: Saiki, H., Moulay, G., Guenzel, A. J., Liu, W., Decklever, T. D., Classic, K. L., Pham, L., Chen, H. H., Burnett, J. C., Russell, S. J., Redfield, M. M. Tags: RESEARCH ARTICLE Source Type: research

SOD1 overexpression prevents acute hyperglycemia-induced cerebral myogenic dysfunction: relevance to contralateral hemisphere and stroke outcomes
In conclusion, our results show that SOD1 overexpression nullified the detrimental effects of HG on myogenic tone and stroke outcomes and that the contralateral hemisphere may be a novel target for the management of acute hyperglycemic stroke.
Source: AJP: Heart and Circulatory Physiology - March 1, 2015 Category: Cardiology Authors: Coucha, M., Li, W., Hafez, S., Abdelsaid, M., Johnson, M. H., Fagan, S. C., Ergul, A. Tags: INTEGRATIVE CARDIOVASCULAR PHYSIOLOGY AND PATHOPHYSIOLOGY Source Type: research