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Anti 4 hne serum

Manufactured by Alpha Diagnostic
Sourced in United States

The Anti-4-HNE serum is a laboratory reagent used for the detection and quantification of 4-hydroxynonenal (4-HNE), a biomarker of oxidative stress. It is a polyclonal antibody that specifically binds to 4-HNE adducts, allowing for the measurement of 4-HNE levels in biological samples.

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2 protocols using anti 4 hne serum

1

Immunohistochemical Analysis of GSTA4

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Epitope retrieval and immunohistochemical (IHC) staining were performed as previously described.26 (link) A polyclonal rabbit antibody against full-length human GSTA4 with cross-reactivity to murine Gsta4 (Abnova, Walnut, CA, USA; H00002941-D01P, 1:100) and anti-4-HNE serum (Alpha Diagnostic International Inc, San Antonio, TX, USA; HNE11-S, 1:1,000) were used as primary antibodies. Goat anti-rabbit IgG-HRP conjugate (Life Technologies, Grand Island, NY, USA) was used as secondary antibody. Chromogenic color development was performed using 3,3′-diaminobenzidine enhanced liquid substrate (Sigma) and nuclei counterstained by Mayer’s hematoxylin (Sigma). IHC staining for GSTA4 in human tissues was scored using a combination of stain intensity (0, negative; 1, weak; 2, moderate; 3, strong) and overall number of positive cells per 20X field (0, none; 1, < 10%; 2, 10 – 50%; 3, >50% positive cells).
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2

Measuring Hippocampal Oxidative Stress

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To evaluate level of oxidative stress in the hippocampus, we conducted immunofluorescence staining with paraformaldehyde-fixed brain tissue. Oxidative stress was detected by measuring the presence of the lipid peroxidation product, 4HNE (4-hydroxy-2-nonenal). Immunohistochemistry with 4HNE (Alpha Diagnostic Intl. Inc., San Antonio, TX, USA) antibodies was conducted according as previously described manual [64 (link)]. Brain sections were immersed in a polyclonal rabbit anti-4HNE serum (diluted 1:500, Alpha Diagnostic Intl. Inc., San Antonio, TX, USA) with the PBS containing 0.3% TritonX-100 for overnight in a 4 °C incubator. After we washed the sections three times for 10 min with PBS, these sections were also immersed in a solution of Alexa Fluor 594-conjugated goat anti-rabbit IgG secondary antibody (diluted 1:250, Invitrogen, Grand Island, NY, USA) for two hours at RT. The sections were laid on gelatin-coated slides in order to observe under a microscope. To measure the oxidative injury, we used Image J (v. 1.47c.) program and measured the mean gray value [63 (link)].
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