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Rapid Evaluation of Toxicity of Chemical Compounds Using Zebrafish Embryos
Published on: August 25, 2019
A rapid assessment for predicting drug-induced hepatotoxicity using zebrafish
Yun Zhang1, Liwen Han1, Qiuxia He1
1Biology Institute of Shandong Academy of Sciences, Key Laboratory for Drug Screening Technology of Shandong Academy of Sciences, Shandong Provincial Engineering Laboratory for Biological Testing Technology, Key Laboratory for Biosensor of Shandong Province, 19 Keyuan Road, Lixia District, Jinan 250014, Shandong Province, PR China.
The liver area index in zebrafish is a reliable method for screening drug-induced liver injury. This new endpoint accurately reflects hepatotoxicity, correlating with biochemical markers and histology.
Area of Science:
- Toxicology
- Zebrafish models
- Drug-induced liver injury
Background:
- Zebrafish are utilized as a model organism to study drug-induced hepatotoxicity.
- Individual variations in zebrafish liver development can affect study outcomes.
Purpose of the Study:
- To evaluate drug-induced liver injury in zebrafish using a novel liver area index.
- To validate the reliability of the liver area index as a rapid assessment of zebrafish liver damage.
Main Methods:
- A transgenic zebrafish line expressing enhanced green fluorescent protein (EGFP) in the liver was employed.
- The liver area index was calculated as a potential endpoint for hepatotoxicity.
- Correlation analysis (Pearson) between liver area index and hepatic transaminase activities (ALT, AST) was performed, alongside histopathological confirmation.
Main Results:
- Treatment with known hepatotoxic drugs (carbaryl, isoniazid, pyrazinamide) resulted in significantly decreased liver area index levels in zebrafish larvae.
- These findings corresponded with elevated alanine transaminase (ALT) and aspartate transaminase (AST) activities and observable histological liver alterations.
- A significant negative correlation was established between the severity of liver injury and the liver area index.
Conclusions:
- The liver area index serves as a dependable and comparable indicator for screening hepatotoxic agents in zebrafish models.
- This method offers a valuable tool for early detection of liver injury in toxicological studies.
