These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Cadmium-induced abnormality in strains of Euglena gracilis: morphological alteration and its prevention by zinc and cyanocobalamin.
    Author: Watanabe M, Suzuki T.
    Journal: Comp Biochem Physiol C Toxicol Pharmacol; 2001 Sep; 130(1):29-39. PubMed ID: 11544141.
    Abstract:
    Euglena gracilis is susceptible to cadmium (Cd) at high concentrations. There are no comparative data on cytotoxicity or abnormality of CdCl2 to E. gracilis Z and its achlorophyllous mutant SMZ. The present study examined the cytotoxicity of CdCl2 under continual exposure at levels ranging from sub-ppm to ppm, and assessed the effects of zinc (Zn) or cyanocobalamin (VB12) supplementation on the suppression of Cd-induced abnormal cell proliferation and hypertrophy. With Zn levels restricted to 1 ppm [as Zn++], cell growth of both E. gracilis strains was reduced in proportion to Cd concentration. More abnormal cells (hypertrophied, V-shape and starfish-shape) were observed in both strains at sub-ppm levels of Cd. ZnSO4 supplementation from 2 to 63 ppm significantly suppressed the incidence of Cd-induced abnormality. However, a significant increase in abnormal cells was observed following Zn supplementation at levels of 125 and 250 ppm, which produced remarkable differences in cell morphology. The incidence of abnormal cells varied with supplemented VB12 levels ranging from 4 to 250 ppb in both E. gracilis strains.
    [Abstract] [Full Text] [Related] [New Search]