alexa Impact of nitrite exposure on endocrine, osmoregulatory and cytoprotective functions in the marine teleost Sparus sarba.
Agri and Aquaculture

Agri and Aquaculture

Journal of Aquaculture Research & Development

Author(s): Deane EE, Woo NY

Abstract Share this page

Abstract The effects of nitrite, at varying concentrations (0, 25 and 50mg/l), on silver sea bream (Sparus sarba), was assessed after 7 days exposure. Nitrite exposure resulted in an elevated renosomatic index in parallel with increased kidney water content. Measurements of serum thyroid hormones demonstrated that levels of thyroxine (T(4)) were decreased upon nitrite exposure whereas triiodothyronine (T(3)) concentrations remained unchanged. Nitrite did not affect serum K and Na levels but did cause an increase in gill sodium pump (Na(+)-K(+)-ATPase) activity. Using immunoassays, it was found that the abundance of the water channel protein, aquaporin 3 (AQP3) was unchanged in gills but decreased in kidneys of sea bream upon nitrite exposure. Immunoassay analysis also demonstrated that the amount of the heat shock protein 70 (HSP70) family were increased in gills, kidney and liver during nitrite exposure whereas amounts of the heat shock protein 90 (HSP90) family increased in kidneys and liver. Taken together, the findings from this study provide new insights into how nitrite affects osmoregulatory, endocrine processes and heat shock protein expression in a marine fish. This article was published in Aquat Toxicol and referenced in Journal of Aquaculture Research & Development

Relevant Expert PPTs

Relevant Speaker PPTs

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords