Project description:Naphthenic acids (Nas) are carboxylic acids present in crude oil and classfied as emergent pollutants. The mechanisms underlaying the toxicity of such mixtures are unknown. Changes in gene expression are expected to reflect te teratogenenic effects of the exposure to NAs. The objective of these experiments is to determine the changes in the gene expression profile of Silurana (Xenopus) tropicalis embryos due to the exposition to two NA mixtures.
Project description:Arsenic is a carcinogenic metalloid element found naturally in the environment; however human activities such as mining and pesticide use have led to increased concentrations in some areas. Silurana tropicalis eggs were exposed to sublethal concentrations of sodium arsenate (0, 0.5 and 1 ppm) for 3 days during embryogenesis. Four pooled of 10 larvae were sampled per treatment and analyzed for gene expression changes using a microarray approach. Silurana tropicalis eggs were exposed to sublethal concentrations of sodium arsenate (0, 0.5 and 1 ppm) for 3 days during embryogenesis. There were 5 controls, 5 low dose and 6 high dose microarrays perfomed.
Project description:Arsenic is a carcinogenic metalloid element found naturally in the environment; however human activities such as mining and pesticide use have led to increased concentrations in some areas. Silurana tropicalis eggs were exposed to sublethal concentrations of sodium arsenate (0, 0.5 and 1 ppm) for 3 days during embryogenesis. Four pooled of 10 larvae were sampled per treatment and analyzed for gene expression changes using a microarray approach.
