Western blot
Liver tissues were homogenized in radio-immunoprecipitation
assay lysis buffer. The lysate was centrifuged, and the
supernatant was collected for measuring the protein concentration
using a BCA protein kit (Pierce, USA). Thirty micrograms
were resolved on 12% polyacrylamide gels, and
electroblotted onto nitrocellulose membranes. Membranes were probed with anti-SOD-1 (1:500), anti-PRDX-1
(1:1000) and anti-actin (1:2000) purchased from Abcam
(Abcam, Massachussetts, USA). The membrane was incubated
with secondary antibodies labeled with horseradish
peroxidase conjugate and then detected using an enhanced
chemiluminescence substrate (ECL; Pierce, USA).