Variability of heat shock proteins and glutathione S-transferase in gill and digestive gland of blue mussel, Mytilus edulis.

Abstract:

:Glutathione S-transferase (GST) and heat shock proteins (hsps) 40, 60, 70 and 90 were determined by immunoblotting using actin as an internal control in Mytilus edulis from one station outside (site1) and three stations within (sites 2-4) Cork Harbour, Ireland. Comparisons were made between gill and digestive gland and between sites. Gill shows generally higher hsp 60, 70 and 90 while digestive gland has higher hsp 40. Site 1 showed higher gill hsps 40 and 70 than sites 2-4 while gill GST was higher in sites 3 and 4 than 1 and 2. Comparison with sites in the North Sea (site 5: outside Tjärnö in The Koster archipelago in the Skagerack) and Baltic Sea (site 6: Askö island) also revealed lower hsps 40 and 70 in site 6 (low salinity) than site 5 (high salinity) although hsps 60, 70 and 90 were detectable in digestive gland unlike sites 1-4. Previously, only hsp 70 had been studied at these sites [Mar. Environ. Res. 39. (1995), 181]. At the mRNA level, gill hsp 70 is 80-fold higher at Tjärnö than Askö. These data suggest that, while salinity may slightly decrease hsp 40 and 70, both hsp 70 and GST are selectively up-regulated by approx. 10- and 3-fold, respectively, at Tjärnö compared to the other sites which we attribute to exposure to more widely fluctuating pollution levels.

journal_name

Mar Environ Res

authors

Lyons C,Dowling V,Tedengren M,Gardeström J,Hartl MG,O'Brien N,van Pelt FN,O'Halloran J,Sheehan D

doi

10.1016/S0141-1136(03)00044-8

keywords:

subject

Has Abstract

pub_date

2003-12-01 00:00:00

pages

585-97

issue

5

eissn

0141-1136

issn

1879-0291

pii

S0141-1136(03)00044-8

journal_volume

56

pub_type

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