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Original

Anti-hypertensive effects of Rosuvastatin are associated with decreased inflammation and oxidative stress markers in hypertensive rats

, , , , , , , , , & show all
Pages 226-236 | Received 19 Jul 2007, Published online: 07 Jul 2009
 

Abstract

Among their pleiotropic effects, statins exert antioxidant and anti-inflammatory properties. The aim of this study was to evaluate in normotensive (WKY) and in spontaneously hypertensive rats (SHR) the effect of rosuvastatin (ROSU) treatment on (1) plasma inflammation markers and endogenous NO synthase inhibitor (ADMA) levels, (2) reactive oxygen species (ROS) generated by circulating leukocytes and (3) vascular oxidative stress and tissue inflammation markers. Plasma cytokines were higher in SHR than in WKY, except for IL-4, which was lower in SHR than in WKY. SHR monocytes exhibited higher production of ROS than did WKY monocytes. In the experimental conditions, ROSU did not modify plasma cholesterol levels in SHR but attenuated the increase in systolic blood pressure. In SHR only, ROSU lessened pro-inflammatory cytokines and ADMA levels, increased IL-4 and reduced ROS production in circulating monocytes. These results demonstrate the beneficial effects of ROSU in SHR, independently of any lowering of cholesterol levels.

Abbreviations
ADMA=

asymmetrical dimethyl-arginine

DAF-FM=

4-amino-5-methylamino-2′,7′-difluorofluorescein diacetate

DAPI=

4′,6-diamidino-2-phenyindole

DHE=

dihydroethidium

EPA=

endogenous peroxidase activity

GM-CSF=

granulocyte macrophage colony-stimulating factor

HDL=

high-density lipoprotein

HPLC=

high performance liquid chromatography

HR=

heart rate

IFN-γ=

interferon-γ

IL=

interleukin

iNOS=

inductible NO synthase

LDL=

low-density lipoprotein

MCP-1=

monocyte chemoattractant protein-1

NAD(P)H=

Nicotinamine Adenine Dinucleotide Phosphate

NO=

nitric oxide

O2•−=

superoxide anion

PBS=

phosphate-buffered saline

PMNs=

polymorphonuclear cells

RLU=

relative light units

ROS=

reactive oxygen species

ROSU=

rosuvastatin

SBP=

systolic arterial pressure

SDMA=

symmetric stereoisomer dimethyl-arginine

SHR=

spontaneously hypertensive rats

WKY=

Wistar Kyoto.

Abbreviations
ADMA=

asymmetrical dimethyl-arginine

DAF-FM=

4-amino-5-methylamino-2′,7′-difluorofluorescein diacetate

DAPI=

4′,6-diamidino-2-phenyindole

DHE=

dihydroethidium

EPA=

endogenous peroxidase activity

GM-CSF=

granulocyte macrophage colony-stimulating factor

HDL=

high-density lipoprotein

HPLC=

high performance liquid chromatography

HR=

heart rate

IFN-γ=

interferon-γ

IL=

interleukin

iNOS=

inductible NO synthase

LDL=

low-density lipoprotein

MCP-1=

monocyte chemoattractant protein-1

NAD(P)H=

Nicotinamine Adenine Dinucleotide Phosphate

NO=

nitric oxide

O2•−=

superoxide anion

PBS=

phosphate-buffered saline

PMNs=

polymorphonuclear cells

RLU=

relative light units

ROS=

reactive oxygen species

ROSU=

rosuvastatin

SBP=

systolic arterial pressure

SDMA=

symmetric stereoisomer dimethyl-arginine

SHR=

spontaneously hypertensive rats

WKY=

Wistar Kyoto.

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