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Oxidative modification of patient's plasma proteins and its role in pathogenesis of multiple sclerosis
Elżbieta Miller1, Anna Walczak, Joanna Saluk
1Neurorehabilitation Ward, III General Hospital in Lodz, Lodz, Milionowa 14, Poland. betty.miller@interia.pl
Background:
Oxidative stress plays an important role in multiple sclerosis (MS).
Objective And Methods:
The present study was designed to evaluate the modifications of plasma proteins by estimation markers of oxidative/nitrosative stress: carbonyl groups and 3-nitrotyrosines (3-NT) levels in relapsing-remitting (RR) (n=10) and secondary progressive (SP) (n=10) clinical course of multiple sclerosis. Moreover, we estimated the level of uric acid (UA) in plasma of MS patients.
Results:
Compared to controls (n=10), the levels of carbonyl groups in plasma proteins were elevated (P<0.0001) as well in RRMS as in SPMS. The highest concentration of 3-NT was observed in plasma proteins obtained from SPMS patients (P<0.0005). The level of uric acid in plasma was significantly lower in RRMS (P<0.0001) than SPMS.
Conclusion:
This is the first report which presented differences between SPMS and RRMS patients in 3-NT and protein carbonyl groups in plasma proteins.
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