Abstract:
:Toll-like Receptors (TLRs) are the first innate receptors in recognizing pathogen-associated molecular patterns. In fish, upregulation of toll-like receptors during infection has been largely demonstrated while the effects of abiotic stressors on their expression remain poorly investigated. In this study, striped catfish were submitted during 20 days to three salinity profiles (freshwater, low saline water, saline water), followed by injection of a bacterial strain of Edwardsiella ictaluri. The expression of TLRs 1, 3, 4, 5, 7, 9, 19, 21, and 22 was measured in kidney at different time points in non infected and infected striped catfish. Infection induced overexpression of TLRs 1, 3, 4, 5, 7, 21 and 22. With elevated salinity, the expression of all TLRs, except TLR5, was severely decreased, particularly after bacterial infection. The TLRs responsiveness of striped catfish facing bacterial disease and salinity stress and possible consequences on striped catfish immune response's efficiency are discussed.
journal_name
Dev Comp Immunoljournal_title
Developmental and comparative immunologyauthors
Schmitz M,Baekelandt S,Bequet S,Kestemont Pdoi
10.1016/j.dci.2017.03.020subject
Has Abstractpub_date
2017-08-01 00:00:00pages
139-143eissn
0145-305Xissn
1879-0089pii
S0145-305X(16)30402-5journal_volume
73pub_type
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