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A Transfer of Silver Nanoparticles from Pregnant Rat to Offspring

  • Received : 2012.07.02
  • Accepted : 2012.09.04
  • Published : 2012.09.30

Abstract

Silver nanoparticles (size: $7.9{\pm}0.95$ nm, dosage: 250 mg/kg) were orally administered to pregnant rats. At 4 days after parturition, four pups were randomly selected (one pup from one dam) and silver level in liver, kidney, lung and brain was determined by ICP-MS and electron microscope. As results, silver nanoparticles highly accumulated in the tissues of the pups. Silver level in the treated group was $132.4{\pm}43.9$ ng/g in the kidney (12.3 fold compared to control group), $37.3{\pm}11.3$ ng/g in the liver (7.9 fold), $42.0{\pm}8.6$ ng/g in the lung (5.9 fold), and $31.1{\pm}4.3$ ng/g in the brain (5.4 fold). This result suggested that the possible transfer of silver nanoparticles from pregnant dams to the fetus through mainly placenta.

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