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2 protocols using ab393364

1

Western Blot Analysis of Antioxidant Proteins

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After boiling in Laemmli’s sample buffer, proteins were resolved on 7% or 12% SDS-polyacrylamide gels, and transferred to the PVDF membrane. Membranes were incubated with a primary antibody. GR was detected using an anti-GR antibody (PA1 511A) (Affinity BioReagents, Golden, CO, USA). SOD1, SOD2, CAT, GSH-Red, GSH-Px, GLUT2, and 11βHSD1 were detected using Abcam (Abcam, Cambridge, UK) antibodies (ab13498, ab13533, ab16731, ab16801, ab22604, ab54460, and ab393364, respectively). β-actin was detected by AC-15 antibody (Sigma-Aldrich, St. Louis, MO, USA). NF-κB-p65 subunit, lipin-1, and lamin B were detected using antibodies from Santa Cruz Biotechnology (Santa Cruz Biotechnology, Dallas, TX, USA) (sc-372, sc-98450, and sc-6217, respectively). After being incubated with alkaline phosphatase linked secondary antibody (Amersham Pharmacia Biotech, Little Chalfont, UK), immunoreactive proteins were visualized by the enhanced chemifluorescence method (Amersham Biosciences). Quantitative analysis of immunoreactive bands was done using ImageQuant software. β-actin was used as equal load controls for whole cell extracts and cytosols, and lamin B for nucleosols.
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2

Protein Expression Analysis by Western Blot

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Proteins concentration was measured using Lowry method (Lowry et al. 1951 ) and 60 µg of proteins were subjected to electrophoresis on 7.5% SDS-PAGE. After transfer to PVDF membrane (Immobilon-FL membrane, Millipore), using a Transblot system (Bio-Rad Laboratories), the unbound sites were blocked (1 h with 2% non-fat dry milk) and the membranes were probed with specific primary rabbit polyclonal antibodies for anti-phospho-p38 Tyr 182 (1:750) (sc-7975-R, Santa Cruz Biotechnology), anti-p38 MAPK (1:500) (sc-535, Santa Cruz Biotechnology), anti-GR (1:500) (sc-8992, Santa Cruz Biotechnology), anti-11BHSD1 (1:1000) (ab393364, Abcam), anti-H6PDH (1:1000) (sc-67394, Santa Cruz Biotechnology), anti-SREBP1c (1:500) (sc-366, Santa Cruz Biotechnology) and mouse monoclonal anti-PPARG (1:1000) (sc-7273, Santa Cruz Biotechnology). Monoclonal mouse anti-B-actin antibody (1:10,000) (AC-15, Sigma-Aldrich) was used as a loading control. Blots were developed with secondary ECL anti-rabbit IgG HRP-linked whole antibody (1:10,000) (Amersham Pharmacia Biotech) or with anti-mouse IgG HRP-linked whole antibody (1:20,000) (ab97046, Abcam). Signal was developed using enhanced chemiluminescence Downloaded from Bioscientifica.com at 09/07/2024 04:13:17AM via free access (ECL) and densitometry of protein bands on X-ray films (Kodak, Rochester, USA) was performed by Image J software (NIH).
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