Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.3/1351
Título: Metal accumulation and apoptosis in the alimentary canal of Lumbricus terrestris as a metal biomarker
Autor: Amaral, André
Rodrigues, Armindo
Palavras-chave: Apoptosis
Chloragogenous Tissue
Biomarker
Metals
Intestinal Epithelium
Data: Jun-2005
Editora: Springer
Citação: "BioMetals". ISSN 1572-8773. Volume 18, Number 3, June 2005, pp. 199-206(8).
Resumo: The chloragogenous tissue and the intestinal epithelium of adult earthworms, Lumbricus terrestris, sampled from sites with and without volcanic activity in the Azores were submitted to hematoxylin/eosin staining, autometallography and TUNEL-test in order to quantify the radial thickness of both tissues, their relative abundance of metals and apoptosis levels. Metals were visualized, through light microscopy, as black silver deposits (BSD) mostly in the chloragogenous tissue. The lowest radial thickness values of both tissues were found in the active volcanic sites, as well as the highest BSD and apoptosis levels. The BSD extent in the chloragogenous tissue, semi-quantified by stereology, exhibited a positive correlation with the apoptosis levels and a negative one with the radial thickness of both tissues. Thus, the variation of the radial thickness of both tissues, but especially of the chloragogenous tissue, which could reflect different cellular turnover rates caused by exposure to metals, is suggested as a biomarker of effect for metal exposure in terrestrial worms inhabiting volcanic environments.
Descrição: Copyright (c) 2005, Springer Netherlands.
Peer review: yes
URI: http://hdl.handle.net/10400.3/1351
ISSN: 1572-8773
Versão do Editor: http://dx.doi.org/10.1007/s10534-005-0335-3
Aparece nas colecções:DBIO - Artigos em Revistas Internacionais / Articles in International Journals

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