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

From National Research Council Canada

Author	Search for: Hori, T.; Search for: Afonso, L. O.B.¹; Search for: Johnson, S. C.¹; Search for: Iwama, G. K.; Search for: Moraes, G.
Affiliation	National Research Council of Canada. NRC Institute for Marine Biosciences
Format	Text, Address
Conference	VIIth International Congress on the Biology of Fish, 19-22 July 2006, St. John's, Newfoundland and Labrador, Canada
Subject	endocrine stress response; metabolic stress response; cellular stress response; stress response; Brycon cephalus; matrinxa; phenol
Abstract	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
Language	English
Peer reviewed	No
NRC number	NRCC 55866 NRC-IMB-1530
NPARC number	3538314
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Record identifier	7dc1c47e-70ef-48f6-8f48-0529509f2f2c
Record created	2009-03-01
Record modified	2020-03-03

Date modified:: 2024-12-03