Abstract：
:Fish intestine is very sensitive to oxidative damage. Repair of damaged enterocytes may be involved to restore normal function of fish intestine. However, studies of fish enterocyte repair are scarce. The present study aimed to investigate the potential repair role of glutamine after a H2O2 challenge. In this study, fish enterocytes were post-treated with graded levels of glutamine (0, 4, 8, 12 and 20 mM of glutamine) after expose to 100 μM H2O2. The basal control cells were kept in the glutamine-free minimum essential medium only. Results showed that the H2O2-induced decreases in 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide optical density, alkaline phosphatase and Na(+), K(+)-ATPase activities were completely restored by subsequent glutamine treatments. In addition, cellular injury (lactate dehydrogenase), lipid peroxidation (malondialdehyde) and protein oxidation (protein carbonyls) caused by H2O2 were reversed by subsequent glutamine treatments. Furthermore, the H2O2-induced decreases in glutathione contents, glutathione reductase, superoxide dismutase and glutathione peroxidase activities were completely restored by subsequent glutamine treatments. In summary, the present study indicated that glutamine improved the repair activity in fish enterocytes after challenge with H2O2.
journal_name
Fish Physiol Biochemjournal_title
Fish physiology and biochemistryauthors
Hu K,Feng L,Jiang W,Liu Y,Jiang J,Li S,Zhou Xdoi
10.1007/s10695-014-9938-3subject
Has Abstractpub_date
2014-10-01 00:00:00pages
1437-45issue
5eissn
0920-1742issn
1573-5168journal_volume
40pub_type
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