Sotiris K. Hadjikakou
  • Prpfessor, University of Ioannina Ioannina
研究方向
  • Biochemistry
Evaluation of Toxicity with Brine Shrimp Assay
通过卤虫实验进行毒性评价
作者:Christina N. Banti and Sotiris K. Hadjikakou日期:01/20/2021,浏览量:5884,Q&A: 0

The in vivo toxicity of new metallodrugs either as Small Bioactive Molecules (SBAMs) or Conjugates of Metals with Drugs (CoMeDs) or their hydrogels such as with hydroxyethyl-methacrylate (HEMA) (pHEMA@SBAMs or pHEMA@CoMeDs) are evaluated by the brine shrimp assay. Thus individuals of Artemia salina larvae are incubated in saline solutions with SBAMs, CoMeDs, pHEMA@SBAMs or pHEMA@CoMeDs or without for 24 h. The toxicity is then determined in terms of the mortality rate of brine shrimp larvae. Brine shrimp assay is a low cost, safe, no required feeding during the assay, while it requiring only a small amount of the tested agent.

Evaluation of Genotoxicity by Micronucleus Assay in vitro and by Allium cepa Test in vivo
利用微核体外分析系统和洋葱体内实验进行遗传毒性测试
作者:Christina N. Banti and Sotiris K. Hadjikakou日期:07/20/2019,浏览量:8009,Q&A: 0
The in vitro and in vivo genotoxicity of new metallodrugs either as Small Bioactive Molecules (SBAMs) or Conjugates of Metals with Drugs (CoMeDs) is evaluated by the micronucleus test and the Allium cepa assay, respectively. Fetal lung fibroblast cells (MRC-5), normal human corneal epithelial cells (HCEC) and immortalized human keratinocytes cells (HaCaT) were incubated with solutions of SBAMs or CoMeDs at their IC50 values for 48 h (the concentration of a compound which is required to inhibit the cells growth by 50% in relation to the non-treated cells). The micronucleus abundance percentage towards the corresponding one, of the non-treated cells indicates the in vitro genotoxicity of the formulations. The in vivo Allium cepa test comprises the exposing of the plant Allium cepa roots to an SBAMs or a CoMeDs solution for 48 h. The percentages of the mitotic index, the chromosome aberrations, the nuclear abnormalities and the presence of the micronucleus are calculated indicating the in vivo genotoxicity of the agent.