17α-Ethynylestradiol alters the peritoneal immune response of gilthead seabream

17α-Ethynylestradiol (EE ), a synthetic estrogen used in most oral contraceptives pills and hormone replacement therapies, is found in many water bodies, where it can modulate the fish immune response. EE acts as an endocrine disruptor in gilthead seabream, Sparus aurata L., a marine teleost fish of...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Developmental and comparative immunology 2017-11, Vol.76, p.143-149
Hauptverfasser: Gómez González, N E, Cabas, I, Rodenas, M C, Arizcun, M, Mulero, V, García Ayala, A
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:17α-Ethynylestradiol (EE ), a synthetic estrogen used in most oral contraceptives pills and hormone replacement therapies, is found in many water bodies, where it can modulate the fish immune response. EE acts as an endocrine disruptor in gilthead seabream, Sparus aurata L., a marine teleost fish of great economic value in Mediterranean aquaculture, as it induces hepatic vitellogenin gene (vtg) expression. Moreover, EE also alters the capacity of gilthead seabream to appropriately respond to infection although it does not behave as an immunosuppressor. Nevertheless, these previous studies have mainly focused on the head kidney leukocytes and no information exists on peritoneal leukocytes, including mast cells. In the present work, juvenile gilthead seabream fish were fed a pellet diet supplemented with EE for 76 days and intraperitoneally injected with hemocyanin plus imject alum adjuvant at the end of EE treatment and 92 days later, and the peritoneal immune response was analyzed. EE supplementation induced vtg expression but returned to basal levels by 3 months post-treatment. Interestingly, gilthead seabream peritoneal leukocytes express the genes encoding for the nuclear estrogen receptor α and the G protein-coupled estrogen receptor 1 and the dietary intake of EE induced these expression. Moreover, EE induced an inflammatory response in the peritoneal cavity in unvaccinated fish, which was largely maintained for several months after the cessation of the treatment. However, the impact of EE in vaccinated fish was rather minor and transient. Taken together, the study provides fresh information about endocrine immune disruption, focusing on peritoneal leukocytes.
ISSN:0145-305X
1879-0089
DOI:10.1016/j.dci.2017.06.002