alexa Comparison of cytochemical procedures to estimate lysosomal biomarkers in mussel digestive cells
Agri and Aquaculture

Agri and Aquaculture

Fisheries and Aquaculture Journal

Author(s): I Marigmez, X Lekube, MP Cajaraville, G Domouhtsidou, V Dimitriadis

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Enlargement and membrane destabilisation in digestive cell lysosomes of mussels are biomarkers of pollution effect. Cytochemical methods are currently applied to determine lysosomal membrane stability (LMS) and lysosomal structural changes (LSC). LMS, determined after grading N-acetyl-β-hexosaminidase activity on cryotome sections of digestive gland, is measured as labilisation period (LP). LSC, determined after image analysis of cryotome sections where β-glucuronidase activity is revealed, are measured as lysosomal volume (Vv), surface (Sv), numerical (Nv) densities and surface-to-volume ratio (S/V). Both methods have now been compared in a field study. Mussels were collected from Biscay Bay (Plentzia, reference; Muskiz, moderately polluted) and North Aegean Sea (Olympiada, reference; Limani, heavily polluted). Higher Vv and Sv and lower S/V and LP were recorded in polluted sites than in reference sites. Significant correlations with LP were found for Vv and S/V. The cost/effectiveness and environmental significance of both methods are discussed.

This article was published in Aquatic Toxicology and referenced in Fisheries and Aquaculture Journal

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