Catechin from green tea had the potential to decrease the chlorpyrifos induced oxidative stress in larval zebrafish...

Area of Science:

• Environmental Toxicology
• Biochemistry
• Marine Biology

Background:

• Catechin, a green tea compound, exhibits antioxidant and anti-apoptotic properties.
• Chlorpyrifos (CPF) insecticide induces oxidative stress, mitochondrial dysfunction, and apoptosis.
• Zebrafish are a model organism for studying developmental toxicity.

Purpose of the Study:

• To evaluate catechin's efficacy in alleviating CPF-induced oxidative damage and apoptosis.
• To investigate catechin's protective mechanisms against CPF toxicity in early zebrafish development.

Main Methods:

• Larval zebrafish were exposed to chlorpyrifos (CPF) and catechin.
• Assessed oxidative stress markers, including reactive oxygen species (ROS) and antioxidant enzyme activities.
• Analyzed gene expression related to antioxidant defense and apoptosis pathways (GSH, Mn-SOD, Cat, GPX, p53, bax).

Main Results:

• CPF exposure significantly increased oxidative stress, ROS production, and altered antioxidant enzyme/gene expression in zebrafish larvae.
• Catechin treatment reduced CPF-induced oxidative damage, promoting glutathione (GSH) and glutathione S-transferase (GST) activity.
• Catechin downregulated CPF-induced expression of oxidative stress genes (Mn-SOD, Cat, gst, GPX) and apoptosis-related genes (p53, bax).

Conclusions:

• Catechin effectively alleviates chlorpyrifos-induced oxidative stress and apoptosis in developing zebrafish.
• Catechin protects aquatic organisms from pesticide toxicity by regulating antioxidant pathways.
• Findings support catechin's potential as a natural agent to mitigate pesticide-induced harm in aquatic ecosystems.