Ovine sperm DNA oxidation quantification using an 8‐OHdG immunodetection assay |
| |
| Authors: | Pedro Javier Soria‐Meneses Alejandro Jurado‐Campos Vidal Montoro Ana Josefa Soler Jos Julin Garde María del Rocío Fernndez‐Santos |
| |
| Institution: | Pedro Javier Soria‐Meneses,Alejandro Jurado‐Campos,Vidal Montoro,Ana Josefa Soler,José Julián Garde,María del Rocío Fernández‐Santos |
| |
| Abstract: | Our aim was to optimize 8‐hydroxy‐2′‐deoxyguanosine (8‐OHdG) immunodetection in order to detect DNA damage caused by oxidative stress that may not be detected by other DNA integrity analysis techniques, especially due to the high compaction of DNA in ruminants. Semen samples from 6 rams were cryopreserved. After thawing, samples were subjected to the DNA oxidation quantification using an 8‐OHdG immunodetection assay by flow cytometry. We have evaluated two different incubation times (30 min vs. overnight) at 4°C of the primary antibody (monoclonal anti‐8‐OHdG antibody). We have also compared the results of this technique with the sperm chromatin structure assay (SCSA®). The analysis revealed that there were no significant differences (p > .05) between different incubation times. However, overnight incubation seems to cause more non‐specific binding of the secondary antibody. Significant differences (p < .05) between subjects and oxidation controls (8 M H2O2/800 μM FeSO4?7H2O) were evident. We can conclude that the 8‐OHdG immunodetection assay for DNA oxidation quantification of ram sperm can be performed subjecting sperm samples to a very high oxidative treatment. |
| |
| Keywords: | 8‐OHdG
DNA
flow cytometry oxidative stress ram
ROS
SCSA
®
sperm |
|
|
