Abstract
The presence of endocrine cells in the gills of the goldfish Carassius carassius and the effects of lead intoxication (5 mg l−1) on their relative abundance and secretory activity were studied. Endocrine cells synthesizing peptido-like (met and leu-enkephalin and neuropeptide Y) and serotonin-like substances were detected in gill filaments by immunocytochemical procedures. Decreased immunoreactivity for two enkephalins and neuropeptide Y was observed after 48 and 96 h lead exposure. In contrast, increased serotonin immunoreactivity was evident after a one-week treatment. A search for Ca++-binding proteins was also carried out by immunocytochemical methods. Calbindin D-28K and S-100-like molecules were detected in gill epithelium, and their expression appeared enhanced after lead exposure.
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Franchini, A., Rebecchi, B. & Fantin, A.M.B. Gill Endocrine Cells in the Goldfish Carassius carassius var. auratus and Their Impairment Following Experimental Lead Intoxication. Histochem J 31, 559–564 (1999). https://doi.org/10.1023/A:1003848225503
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DOI: https://doi.org/10.1023/A:1003848225503