Comparative toxicities of aluminum and zinc from sacrificial anodes or from sulfate salt in sea urchin embryos and sperm
Makaleler > Tam Makale · 2010
Yazarlar: Christelle CAPLAT, Rahime ORAL, Marie-Laure MAHAUT, Andrea MAO, Daniel BARİLLİER, Marco GUİDA, Claudio Della Rocca, Giovanni PAGANO
Ecotoxicology and Environmental Safety, SCI Expanded İndekslerine Giren Dergi, Uluslararası, Wos, 2010, cilt 73, ss 1138-1143
DOI: 10.1016/j.ecoenv.2010.06.024
Özet
The toxicity of aluminum or zinc from either sacrificial anodes (SA) or their sulfate salts (SS) was evaluated in sea urchin (Paracentrotus lividus) embryos or sperm exposed to Al(III) or Zn(II) (SA or SS, 0.1-10 mu M), scoring developmental defects (DDs), fertilization rate (FR), and mitotic abnormalities. A significant DD increase was observed in SS, but not SA Al(III)- and Zn(II)-exposed embryos vs. controls. Both Al(III) and Zn(II), up to 10 mu M, from SA and SS, inhibited mitotic activity and induced mitotic aberrations in exposed embryos. SA-AI(III)-exposed sperm displayed a significant FR increase, unlike AI(III) sulfate overlapping with controls. Both SA-Zn(II) and Zn(II) sulfate sperm exposure resulted in a significant FR increase. The offspring of SA-AI(III)-exposed sperm displayed a significant DD decrease, unlike Al(III) sulfate exposure. Zinc sulfate sperm exposure resulted in a significant increase in offspring DDs, whereas SA-Zn(II) sperm exposure decreased DDs. Together, exposures to SA-dissolved Al(III) or Zn(II) resulted in lesser, if any toxicity, up to hormesis, compared to SS. Studies of metal speciation should elucidate the present results. (C) 2010 Elsevier Inc. All rights reserved.