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Intravenous iron sucrose reverses anemia-induced cardiac remodeling, prevents myocardial fibrosis, and improves cardiac function by attenuating oxidative/nitrosative stress and inflammation.

Abstract：

BACKGROUND:According to recent clinical trial data, correction of iron deficiency with intravenous (i.v.) iron has favorable outcomes on cardiac function. We evaluated whether i.v. iron treatment of anemic rats has favorable effect on the left ventricular (LV) performance and remodeling and the role of oxidative/nitrosative stress and inflammation in the process. METHODS:After weaning, Sprague-Dawley rats were fed low iron diet for 16weeks, after which the treatment group received five weekly doses of i.v. iron sucrose (10mg Fe/kg body weight). Echocardiography of LV was performed and hematology parameters were assessed before treatment (baseline, day 0) and at the end of the study (day 29). On day 29, rats were sacrificed and extracellular expansion and fibrosis in LV and interventricular septum were evaluated together with oxidative/nitrosative stress, pro-inflammatory, and repair process markers. RESULTS:Although iron sucrose treatment did not fully correct the anemia, it reversed anemia-induced cardiac remodeling as indicated by echocardiographic and tissue Doppler parameters. Treatment with iron sucrose also prevented anemia-induced myocardial fibrosis as indicated by extracellular expansion and fibrosis markers. Anemia-induced inflammation was prevented by iron sucrose as indicated by the levels of proinflammatory (TNF-α, NF-κB65) and repair process markers (HSP27, HSP70). In addition, iron sucrose treatment significantly reduced (p<0.01) anemia-induced oxidative and nitrosative stress. CONCLUSION:Intravenous iron sucrose treatment reversed anemia-induced remodeling of LV, prevented myocardial fibrosis, and improved cardiac function by attenuating oxidative/nitrosative stress and inflammation in the heart.

journal_name

Int J Cardiol

journal_title

International journal of cardiology

authors

Toblli JE,Cao G,Rivas C,Giani JF,Dominici FP

doi

10.1016/j.ijcard.2016.03.039

subject

Has Abstract

pub_date

2016-06-01 00:00:00

pages

84-91

eissn

0167-5273

issn

1874-1754

pii

S0167-5273(16)30450-8

journal_volume

212

pub_type

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Intravenous iron sucrose reverses anemia-induced cardiac remodeling, prevents myocardial fibrosis, and improves cardiac function by attenuating oxidative/nitrosative stress and inflammation.