Tetrahydrocurcumin in combination with deferiprone attenuates hypertension, vascular dysfunction, baroreflex dysfunction, and oxidative stress in iron-overloaded mice.

Abstract:

:Excessive iron can generate reactive oxygen species (ROS), leading to oxidative stress that is closely associated with cardiovascular dysfunction. Iron overload was induced in male ICR mice by injection of iron sucrose (10mg/kg/day) for eight weeks. Iron overload was evidenced by increased serum iron indices. The mice developed increased blood pressure, impaired vascular function and blunted response of the autonomic nervous system. These effects were accompanied by increased malondialdehyde levels in various tissues, increased nitric oxide metabolites in plasma and urine, and decreased blood glutathione. Tetrahydrocurcumin (THU, 50mg/kg/day), deferiprone (or L1, 50mg/kg/day) or both was orally administered throughout the period of iron sucrose injection. The treatments significantly alleviated the deleterious cardiovascular effects of iron overload, and were associated with modulation of nitric oxide levels. An imbalance between endothelial nitric oxide synthase (eNOS) and inducible NOS (iNOS) expression in response to iron overload was normalized by THU, L1 or the combination treatment. Moreover, the treatment decreased the upregulated expression levels of gp91phox, p47phox and HO-1. The combination of THU and L1 exerted a greater effect than THU or L1 monotherapy. These results suggest beneficial effects of THU and L1 on iron-induced oxidative stress, hypertension, and vascular dysfunction.

journal_name

Vascul Pharmacol

journal_title

Vascular pharmacology

authors

Sangartit W,Pakdeechote P,Kukongviriyapan V,Donpunha W,Shibahara S,Kukongviriyapan U

doi

10.1016/j.vph.2016.10.001

subject

Has Abstract

pub_date

2016-12-01 00:00:00

pages

199-208

eissn

1537-1891

issn

1879-3649

pii

S1537-1891(16)30163-X

journal_volume

87

pub_type

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