Malondialdehyde, glutathione peroxidase and superoxide dismutase in peripheral blood erythrocytes of patients with acute cerebral ischemia.

Abstract:

:The levels of malondialdehyde (MDA), glutathione peroxidase (GSH-Px) and superoxide dismutase (SOD-1) were measured in the red blood cells (RBC) of 34 patients with acute ischemic hemispheric stroke on the first and seventh day after their stroke onset, and compared with 30 control individuals matched for sex, age and stroke risk factors. Within the first 24 h after stroke, SOD and GSH-Px activities were significantly decreased and MDA levels were significantly elevated in the patients compared with control subjects. Decrease in SOD and GSH-Px activities and increase in MDA levels showed significant correlation with infarct size, initial stroke severity assessed by NIH stroke scale and poor short-term prognosis. Observed changes in the RBC oxygen scavenging process returned to values not different from those of control subjects within seven days after stroke. Our results indicated that antioxidant enzyme concentrations decreased below normal levels in the acute period following ischemic stroke. Until the recovery of antioxidant defence mechanisms, which occurred up to seven days after stroke onset according to our results, the use of neuroprotective therapy against oxyradical injury seems reliable.

journal_name

Eur J Neurol

authors

Demirkaya S,Topcuoglu MA,Aydin A,Ulas UH,Isimer AI,Vural O

doi

10.1046/j.1468-1331.2001.00166.x

subject

Has Abstract

pub_date

2001-01-01 00:00:00

pages

43-51

issue

1

eissn

1351-5101

issn

1468-1331

pii

ene166

journal_volume

8

pub_type

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