Abstract:
:The effect of reactive oxygen species production on the motility parameters, DNA integrity, acid phosphatase activity, and protein tyrosine phosphorylation in spermatozoa of the common carp (Cyprinus carpio) was investigated. Spermatozoa were exposed to different concentrations of xanthine and xanthine oxidase (X-XO) either in the presence or absence of antioxidants for 15 and 60 min. A dose- and time-dependent reduction in spermatozoa motility and velocity was observed. Comet assays showed a dramatic increase in DNA fragmentation after 15 min. Changes in tyrosine phosphorylation of spermatozoa proteins were observed by Western blotting with anti-phosphotyrosine antibodies, and proteins of interest were identified by mass spectrometry. After a 60 min exposure to X-XO, O-linked N-acetylglucosamine transferase, isoform 4 was phosphorylated and septin-8-A was dephosphorylated. Acid phosphatase activity also decreased in a dose-dependent manner after a 60 min exposure to oxidative stress. The results demonstrate that oxidative stress impaired functional variables (sperm motility, velocity, DNA integrity) of carp spermatozoa, and altered intracellular signalling pathways through changes in tyrosine phosphorylation and acid phosphatase activity.
journal_name
Mol Reprod Devjournal_title
Molecular reproduction and developmentauthors
Gazo I,Shaliutina-Kolešová A,Dietrich MA,Linhartová P,Shaliutina O,Cosson Jdoi
10.1002/mrd.22442subject
Has Abstractpub_date
2015-01-01 00:00:00pages
48-57issue
1eissn
1040-452Xissn
1098-2795journal_volume
82pub_type
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