Khat-induced conditioned place preference, extinction, and reinstatement in female mice.

Khat ( Forsk), the natural source of cathinone and other psychoactive agents, is chewed by millions of persons in eastern Africa and the Arabian Peninsula for its psychostimulant effect. Using the conditioned place preference paradigm, this study tested fresh khat extract for place preference induction, extinction, and reinstatement. Female mice treated with 100 and 250 mg/kg of khat extract showed conditioned place preference, which was extinguished following a 16-day khat-free period.

Forsk (khat) reduces spontaneous and rewarded alternation in female mice.

Around 10 million people chew the fresh leaves and twigs of Forsk (khat), which synthesize cathinone, for its psychostimulatory effect. Several studies have reported that regular khat users show executive and cognitive dysfunction, such as impaired inhibitory control and poor performance on memory tests. In this study, the effect of fresh khat extract (100 and 250 mg/kg) on spatial working memory and short-term memory in mice was assessed using spontaneous and rewarded alternation T-maze tests.