Increased protein glycation in non-diabetic pediatric nephrotic syndrome: possible role of lipid peroxidation.
BACKGROUND
Malondialdehyde (MDA), ascorbic acid and reduced glutathione (GSH) have been reported to play a possible role in glycation of proteins. This study was performed to evaluate this correlation in nephrotic syndrome patients by comparing the levels of fructosamine with MDA, ascorbic acid and GSH.


METHODS
Fifteen children with nephrotic syndrome during relapse and 10 age- and sex-matched healthy controls were enrolled for this study. Whole blood GSH, plasma MDA, total ascorbic acid and fasting glucose were analyzed in both the groups. Partial correlation analysis was performed to predict the independent association of MDA, ascorbic acid and GSH on fructosamine.


RESULTS
Plasma MDA and fructosamine levels were found to be increased in nephrotic syndrome patients when compared with controls. Plasma ascorbic acid and whole blood GSH were decreased in nephrotic group vs. healthy controls. Partial correlation analysis showed a significant positive correlation between fructosamine and MDA.


CONCLUSIONS
Present data point to a possible involvement of MDA in the glycation of protein in non-diabetic nephrotic syndrome patients, and provide support for the potential use of an antioxidant therapy in these patients.
Balamurugan
R
R
Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry 605006, India.
Bobby
Zachariah
Z
Selvaraj
N
N
Nalini
P
P
Koner
Bidhan Chandra
BC
Sen
S K
SK
D001205:Ascorbic Acid / Q000097:blood; D001786:Blood Glucose / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D002784:Cholesterol / Q000097:blood; D019270:Fructosamine / Q000097:blood*; D005947:Glucose / Q000378:metabolism; D005978:Glutathione / Q000097:blood; D006031:Glycosylation; D006801:Humans; D016014:Linear Models; D015227:Lipid Peroxidation / Q000502:physiology*; D008315:Malondialdehyde / Q000097:blood*; D009404:Nephrotic Syndrome / Q000097:blood / Q000378:metabolism* / Q000503:physiopathology; D012709:Serum Albumin / Q000032:analysis; D014280:Triglycerides / Q000097:blood
D001786:Blood Glucose; D012709:Serum Albumin; D014280:Triglycerides; D019270:Fructosamine; D008315:Malondialdehyde; D002784:Cholesterol; D005978:Glutathione; D005947:Glucose; D001205:Ascorbic Acid