Berberine Supplement and Resistance Training May Ameliorate Diazinon Induced Neural Toxicity in Rat Hippocampus Via the Activation of the TrkB and ERK Signaling Pathway
International Clinical Neuroscience Journal,
Vol. 8 No. 1 (2021),
30 December 2020
Background: Diazinon is an organophosphate pesticide that is broadly applied to control insects
which causes oxidative damages in hippocampus tissue. We aimed to examine whether resistance
training and berberine supplementation can protect the hippocampus against berberine-induced
Methods: Fifty-six male Wistar rats were assigned randomly into eight groups of seven including:
Control (Ctrl), Sham (normal saline), T1 (diazinon + berberine chloride (2 mg/kg) + resistance
training), T2 (diazinon + berberine chloride [15 mg/kg] + resistance training), T3 (diazinon), T4
(diazinon +resistance training), T5 (diazinon + berberine chloride [2 mg/kg]), and T6 (diazinon
+ berberine chloride [15 mg/kg]). In the experimental groups, diazinon was intraperitoneally
administered at a dose of 1.5 mg/kg. In the training groups, rats were trained every three days for six
weeks and 8-12 dynamic movements (repetitions) during each climb (six climbs for two sets). The
expression of hippocampus PI3K and CDK genes and TrkB and ERK protein levels were evaluated in
the brain of diazinon-treated rats.
Results: The protein expression of ERK and TrkB were increased following the treatment of diazinonintoxicated rats with berberine and resistance training (P=0.001). The administration of berberine
at a dose of 15 mg/kg in combination with resistance training significantly (P=0.001) decreased
the cell death rate in the hippocampus. Diazinon treatment caused extensive apoptosis in the
hippocampus region of the rats’ brain (P=0.001). The gene expression of PI3K and CDK was
significantly increased and the cell death rate significantly decreased (P=0.001) in the hippocampus
following the treatment of rats with berberine and resistance training.
Conclusion: Six weeks of resistance training in combination with berberine treatment significantly
reduced apoptosis in the hippocampus region of diazinon-intoxicated rats. It seems the
neuroprotection effects of berberine and resistance training are mediated by the stimulation of the
expression of enzymes responsible for the antioxidant defense within neuronal cells
- Neural toxicity, PI3K, CDK signaling pathway, Resistance training; Hippocampus
How to Cite
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