Abstract Title:

Dichlorvos Induced Oxidative and Neuronal Responses in Rats: Mitigative Efficacy of Nigella sativa (Black Cumin).

Abstract Source:

Niger J Physiol Sci. 2018 Jun 30 ;33(1):83-88. Epub 2018 Jun 30. PMID: 30091737

Abstract Author(s):

A Imam, A Ogunniyi, A Ibrahim, W I Abdulmajeed, L O Aboyeji, A H Lawan, F A Sulaimon, M Y Adana, S M Ajao

Article Affiliation:

A Imam


Poisoning from Organophosphates (OPs), especially Dichlorvos (DDVP) has become endemic due to theincreasing use in house hold and agricultural pests control, with most marked effects in the nervous system. However, it isevidenced that natural antioxidants are efficacious against OPs toxicity. Thus, this study investigated the possible antidotalefficacy of Nigella sativa oil (NSO) in Dichlovos (DDVP) induced oxidative and neuronal damages in Wistar rats. DDVPwas administered at sub-chronic daily dosage of 8.8 mg/kg.bw for 7 days and a post-administration of NSO at 1 ml/kg.bwfor the subsequent 7 days. The rats were euthanized on the 15thday, blood sample collected via cardiac puncture, centrifugedand the plasma used for biochemical analysis of total antioxidant capacity (TAC), reduced glutathione (GSH) and totalreactive oxygen species (ROS), while the frontal, occipital and cerebellar cortices and the medulla were removed for histomorphological examinations. The results showed significant (P≤0.05) decrease in plasma TAC and GSH, while a significant(P≤0.05) increase in ROS was recorded, and some vacuolation around the neurons especially in the frontal and cerebellarcortices following DDVP exposure. However, post treatment with NSO was observed to be efficacious in the recovery oftheoxidative activities and the neuro-architectural integrities. Thus, it can be concluded that the antioxidant capacity of NSOcould be efficacious against OPs induced oxidative damages, especially in dichlorvos accidents.

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