Abstract
Most teenagers mix up various psychoactive cocktail substances in combinations to get intoxicated. The role of the mixture combination of codeine (CDE), tramadol (TMD), and Cannabis sativa (CNB) on brain cognition, purinergic, cholinergic, and antioxidant enzyme activities remains unknown. This study sought to assess the mechanism of action of combinations of CDE+ TMD+ CNB on the function and activities of the brain of male Wistar rats. Forty-eight male Wistar rats were divided into 8 groups, n = 6. Group 1 served as a control, groups 2, 3, and 4 were exposed to CDE (2 mg/kg bw), TMD (10 mg/kg bw), and CNB (200 mg/kg bw), while groups 5, 6, 7, and 8 were co-administered with CDE+TMD, CNB+ TMD, CNB+CDE, and CNB+TMD+CDE orally for 28 days. This study revealed the effect of prolonged administration of CNB, TMD, and CDE on the suppression of cognitive function, acetyl-cholinesterase (AChE), butyl-cholinesterase (BChE), monoamine oxidase (MAO) enzyme activities, and antioxidant enzyme activities in rats’ brains when compared against control rats (P < 0.05). However, the activities of ectonucleosides (NTPdase), adenosine deaminase (ADA), and malondialdehyde levels produced in the brain of rats were significantly elevated (P < 0.05). This study reported the mechanism behind the neurotoxicity of CNB, TMD, and CDE on rats’ cognitive, cholinergic, purinergic, and antioxidant enzymes as a consequence of the drastic reduction in cholinesterase enzyme activities leading to neurotransmitter poisoning.
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