Endocrine, metabolic and cellular stress responses of matrinxa (Brycon cephalus) exposed to phenol

Par Conseil national de recherches du Canada

Auteur	Rechercher : Hori, T.; Rechercher : Afonso, L. O.B.¹; Rechercher : Johnson, S. C.¹; Rechercher : Iwama, G. K.; Rechercher : Moraes, G.
Affiliation	Conseil national de recherches du Canada. Institut des biosciences marines du CNRC
Format	Texte, Allocution
Conférence	VIIth International Congress on the Biology of Fish, 19-22 July 2006, St. John's, Newfoundland and Labrador, Canada
Sujet	endocrine stress response; metabolic stress response; cellular stress response; stress response; Brycon cephalus; matrinxa; phenol
Résumé	Industrial wastes may contain chemicals such as phenols, which can impact the physiology of fish. We studied the effects of phenol exposure on the metabolic, endocrine and cellular stress responses of matrinxã. Fish were exposed to phenol (0, 0.2 and 2.0 ppm) for 96 hours and subsequently subjected to a 30 second handling stress. Plasma cortisol and glucose, and gill and liver hsp70 levels were determined before exposure, 96 h after exposure and at 1, 6, 12 and 24 hours after stress (HAS). Exposure to these concentrations of phenol did not result in elevated levels of plasma cortisol or glucose at 96 h. Exposure followed by handling, significantly increased plasma glucose and cortisol in the 0 and 2.0 ppm groups. Cortisol levels in these groups declined to resting levels by 6 and 24 HAS, respectively. Glucose returned to resting levels at 12 HAS in both groups. The 0.2 ppm group did not have a glucose or cortisol response. Gill hsp70 levels did not change due to phenol exposure. In the 2.0 ppm group gill hsp70 levels declined after stress. At 96 h liver hsp70 levels were lower in all groups. Stress caused no additional changes in liver hsp70. Our results demonstrate that low levels of phenol can modify the stress response
Langue	anglais
Publications évaluées par des pairs	Non
Numéro du CNRC	NRCC 55866 NRC-IMB-1530
Numéro NPARC	3538314
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	7dc1c47e-70ef-48f6-8f48-0529509f2f2c
Enregistrement créé	2009-03-01
Enregistrement modifié	2020-03-03

Date de modification :: 2024-10-11