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Pediatric Nephrology
Published in: Pediatric Nephrology 10/2012

Open Access 01-10-2012 | Original Article

Oxidative stress in hypertensive children before and after 1 year of antihypertensive therapy

Authors: Joanna Śladowska-Kozłowska, Mieczysław Litwin, Anna Niemirska, Paweł Płudowski, Aldona Wierzbicka, Ewa Skorupa, Zbigniew T. Wawer, Roman Janas

Published in: Pediatric Nephrology | Issue 10/2012

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Abstract

Background

The relation between primary hypertension (PH), target organ damage (TOD) and oxidative stress (SOX) is not known.

Methods

We assessed SOX in 86 children with PH before and after 12 months of standard non-pharmacological and pharmacological therapy based on renin-angiotensin system blockade.

Results

Patients with left ventricular hypertrophy (LVH) and with carotid intima-media thickness (cIMT) >2SDS had higher thiobarbituric acid reactive substances (TBARS) concentrations in comparison to patients without LVH or with normal cIMT. Patients with metabolic syndrome (MS) had lower activity of gluthatione peroxidase, higher asymmetric dimethyloarginine (ADMA) and oxidized LDL cholesterol (oxyLDL) in comparison to patients without MS. TBARS correlated with left ventricular concentric hypertrophy, cIMT, albuminuria and SBP/24 h. ADMA and oxyLDL correlated with CRP and TG/HDL ratio. After 1 year of antihypertensive treatment blood pressure, TOD and prevalence of MS decreased. TBARS decreased and glutathione concentrations increased. The decrease of TBARS concentration correlated with the decrease of body mass index (BMI). Decrease of oxyLDL and ADMA correlated with increased insulin sensitivity, however markers of SOX did not correlate with BP decrease.

Conclusion

SOX in children with PH correlates with TOD, metabolic abnormalities, changes in fat amount and improvement of insulin sensitivity, but not with BP decrease.
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Metadata
Title
Oxidative stress in hypertensive children before and after 1 year of antihypertensive therapy
Authors
Joanna Śladowska-Kozłowska
Mieczysław Litwin
Anna Niemirska
Paweł Płudowski
Aldona Wierzbicka
Ewa Skorupa
Zbigniew T. Wawer
Roman Janas
Publication date
01-10-2012
Publisher
Springer-Verlag
Published in
Pediatric Nephrology / Issue 10/2012
Print ISSN: 0931-041X
Electronic ISSN: 1432-198X
DOI
https://doi.org/10.1007/s00467-012-2193-x

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