PMID: 8950598Oct 1, 1996Paper

Autometallographic localization of protein-bound copper and zinc in the common winkle, Littorina littorea: a light microscopical study

The Histochemical Journal
M SotoI Marigómez

Abstract

Copper (Cu), zinc (Zn) and calcium (Ca) were demonstrated histochemically by means of conventional stains (rubeanic acid for copper, dithizone for zinc, and cobalt nitrate for calcium) and by autometallography in various tissues of winkles (Littorina littorea) sublethally exposed to either copper or zinc dissolved in sea water. Rubeanic acid and dithizone procedures exhibited poor sensitivity: there was no positive reaction after fixation tissues with Bouin's fixative, and only a weak reaction after ethanol fixation. Autometallography, however, produced a positive reaction with both fixatives in the form of black silver deposits in some key cell types. In winkles not exposed to either copper nor zinc, autometallographically demonstrated metals were found in the connective tissue pore cells, the lysosomes of digestive cells, the basal lamina of the digestive tubule epithelium, and cytoplasmic granules in the epithelial cells of the stomach wall. In addition, in winkles exposed to copper, metal deposits were present in some apical cytoplasmic granules of ciliated cells in the gill epithelium, the mucous secretion of gill mucocytes, and the circulating haemocytes. In winkles exposed to zinc, metal deposits were found in the basal ...Continue Reading

References

Jan 1, 1991·Progress in Histochemistry and Cytochemistry·E D Wachsmuth
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Dec 1, 1988·Bulletin of Environmental Contamination and Toxicology·A RecioJ Moya
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Citations

Jan 25, 2013·Archives of Environmental Contamination and Toxicology·Sherin K SheirTheodore B Henry
Jul 21, 2004·Ecotoxicology and Environmental Safety·V K Dimitriadis, M Papadaki
Feb 4, 2005·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·André Filipe Santos AmaralArmindo Santos Rodrigues
Jun 1, 2007·Biomarkers : Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals·O ChampeauJ F Narbonne
Feb 13, 2003·Biomarkers : Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals·A F AmaralM Soto
Oct 20, 2006·The Science of the Total Environment·Beñat ZaldibarManu Soto
Mar 6, 2002·Microscopy Research and Technique·Ionan MarigómezLaure Giamberini
Jun 30, 2005·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·André Filipe Santos Amaral, Armindo dos Santos Rodrigues
May 11, 2017·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Otilia ZarnescuOana Craciunescu
Jul 17, 1999·The American Journal of Physiology·Z DangS E Wendlelaar Bonga

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