title: Measuring lysosomal stability as an effective tool for marine coastal environmental monitoring.
abstract: The use of lysosomal stability in the mussel, Mytilus galloprovincialis, as a potential biomarker of environmental contamination has been evaluated along the Portuguese coast. To this end, the neutral red retention (NRR) time was measured in mussel haemocytes gathered from nine different locations reflecting different degrees of anthropogenic contamination. Mussels collected in the vicinity of industrial and urban areas showed the lowest lysosomal stability. Additionally, no significant seasonal variability (winter-spring/summer) for NRR time was observed. In order to further support the usefulness of this method as an integrated tool for monitoring marine coastal environments, we compared the levels of xenobiotics in mussel tissues with the obtained NRR values. The results highlighted a consistent pattern, with the lowest lysosomal stability intimately correlated with the higher contaminant concentrations. In summary, this integrated approach further demonstrated that the NRR assay can provide useful and objective indications of the real health status of organisms subjected to different stress agents, being a valid option for environmental monitoring.
authors.affiliation: Centre of Marine and Environmental Research, Rua dos Bragas 289, 4050-123 Porto, Portugal.
authors.forename: M
authors.initials: M
authors.lastname: Castro
authors.forename: M M
authors.initials: MM
authors.lastname: Santos
authors.forename: N M
authors.initials: NM
authors.lastname: Monteiro
authors.forename: N
authors.initials: N
authors.lastname: Vieira
mesh_terms: D000818:Animals; D049872:Bivalvia / Q000378:metabolism*; D004784:Environmental Monitoring / Q000379:methods*; D004785:Environmental Pollutants / Q000633:toxicity*; D006434:Hemocytes / Q000378:metabolism; D008247:Lysosomes / Q000187:drug effects*; D008386:Marine Biology; D009499:Neutral Red; D011174:Portugal; D012621:Seasons; D013997:Time Factors; D015262:Xenobiotics / Q000633:toxicity*
chemical_list: D004785:Environmental Pollutants; D015262:Xenobiotics; D009499:Neutral Red