Erythrocyte membrane isolation
Blood from rats was drawn into tubes with potassium EDTA
as anticoagulant. Plasma and platelets were removed by
differential centrifugation (15 min, 1000g). The erythrocytes
were dispersed in isotonic phosphate buffer
(0.119 mol PO4/L, pH 7.4) and washed two or three times
by centrifugation (20 min, 1000g).28 Erythrocyte membranes
were prepared by hypotonic lysis in 7.6 mmol PO4/
L (pH 7.4) according to the procedure of Dodge.29 Membrane
preparations were washed in the 7.6 mmol PO4/L until
the supernatant was clear to remove hemoglobin and
other cytoplasmic components. From this aliquots were
removed and TBARS content was measured.3