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  • Title: Cadmium nephropathy in a freshwater fish, Puntius conchonius Hamilton.
    Author: Gill TS, Pant JC, Tewari H.
    Journal: Ecotoxicol Environ Saf; 1989 Oct; 18(2):165-72. PubMed ID: 2806171.
    Abstract:
    Renal pathology was examined in a freshwater fish, Puntius conchonius, during a 12-week exposure to 500, 630, and 840 micrograms CdCl2/liter (1/25, 1/20, and 1/15 fractions of the 96-hr TLm, respectively). Multifocal tubular epithelial degeneration including severe vacuolation and nuclear pyknosis and karyorrhexis composed the most obvious lesions. The degenerative changes were found mainly in the proximal segments, while the distal segments and the collecting tubules and ducts remained unaffected. Collapsed and shrunken glomeruli and swollen Bowman's spaces were also frequently observed. The cadmium-exposed fish appeared heavily stressed and moribund. A comparison of the renal pathology with that of other fishes and mammals and possible mechanisms of cadmium nephropathy are discussed.
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