LIPID-PEROXIDATION ASSESSED BY SERUM THIOBARBITURIC ACID REACTIVE SUBSTANCES IN HEALTHY-SUBJECTS AND IN PATIENTS WITH PATHOLOGIES KNOWN TO AFFECT TRACE-ELEMENT STATUS
J. Neve et al., LIPID-PEROXIDATION ASSESSED BY SERUM THIOBARBITURIC ACID REACTIVE SUBSTANCES IN HEALTHY-SUBJECTS AND IN PATIENTS WITH PATHOLOGIES KNOWN TO AFFECT TRACE-ELEMENT STATUS, Biological trace element research, 47(1-3), 1995, pp. 147-153
Serum thiobarbituric acid reactive substances (TBARS), Zn, Cu, and Se
concentrations were determined in 47 healthy adults and in patients wi
th diseases, such as renal insufficiency, insulin-dependent diabetes m
ellitus, chronic pancreatitis, liver cirrhosis, or cancer, in order to
clarify the relationship between this indicator of lipid peroxidation
and antioxidative trace element status. TBARS levels were higher than
control values in all pathological cases, except in cancer patients.
Cu levels in patients highly correlated with ferroxidase ceruloplasmin
activity (r = 0.86), but were only statistically different from contr
ols in diabetics. Zn levels were lower than normal in dialysis, liver
cirrhosis, and cancer patients. Se levels were significantly decreased
in all pathological cases. Half of the subjects with liver cirrhosis
or renal insufficiency and 3/4 of chronic pancreatitis or cancer patie
nts had an active inflammatory process. Despite intense modifications
in determined indicators, no clear correlation could be demonstrated b
etween the different parameters. Basic antioxidative trace element sta
tus and inflammation are therefore not major determinants of TBARS lev
els in normal and in pathological conditions, despite of the frequent
association of low serum Zn and mainly low serum Se with high TBARS le
vels.