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Hypertension, lipoprotein subclasses and lipid transfer proteins in obese children and adolescents

By Osama H. Bekhet, Aleksandra Zeljković, Jelena Vekić, Dušan Paripović, Jelena Janać, Jelena Joksić, Tamara Gojković, Vesna Spasojević-Kalimanovska, Amira Peco-Antić, Gordana Miloševski-Lomić and Zorana Jelić-Ivanović


Background: Obesity-related childhood hypertension is associated with disturbances of serum lipids, but less is known about distribution of lipoprotein subclasses and activities of proteins involved in reverse cholesterol transport in hypertensive obese children. Our objective was to determine low-density lipoprotein (LDL) and high-density lipoprotein (HDL) subclasses distribution and activities of lecithin:cholesterol acyltransferase (LCAT) and cholesteryl ester transfer protein (CETP) in hypertensive and non-hypertensive obese children.Methods: A total of 40 hypertensive and 25 non-hypertensive obese children were enrolled. Lipoprotein subclasses were assessed by polyacrylamide gradient gel electrophoresis. LCAT and CETP activities were determined as a rate of formation and a rate of transfer of cholesteryl esters.Results: Despite of comparable values of serum lipid parameters, a shift toward smaller LDL and HDL subclasses was observed in hypertensive compared to normotensive obese children. Activities of LCAT were similar, but proatherogenic CETP activities were significantly higher in the hypertensive group (p= 0.036). LCAT/net CETP ratio inversely correlated with relative proportion of small, dense LDL particles ( =-0.423; p= 0.025) in the group with hypertension.Conclusions: The results of our study demonstrated a tendency toward altered distribution of lipoprotein subclasses in favor of more proatherogenic particles in childhood hypertension. Also, hypertensive obese children had increased proatherogenic CETP activity

Publisher: 'Informa UK Limited'
Year: 2016
DOI identifier: 10.1080/00365513.2016.1201849
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