Abstract
Postnatal exposure to valproic acid (VPA) in rodents induces autism-like neurobehavioral defects which are comparable to the motor and cognitive deficits observed in humans with autism spectrum disorder (ASD). Histamine H3 receptor (H3R) and acetylcholine esterase (AChE) are involved in several cognitive disorders such as Alzheimer's disease, schizophrenia, anxiety, and narcolepsy, all of which are comorbid with ASD. Therefore, the present study aimed at evaluating effect of the novel dual-active ligand E100 with high H3R antagonist affinity and balanced AChE inhibition on autistic-like repetitive behavior, anxiety parameters, locomotor activity, and neuroinflammation in a mouse model of VPA-induced ASD in C57BL/6 mice. E100 (5, 10, and 15 mg/kg) dose-dependently and significantly ameliorated repetitive and compulsive behaviors by reducing the increased percentages of nestlets shredded (all P < 0.05). Moreover, pretreatment with E100 (10 and 15 mg/kg) attenuated disturbed anxiety levels (P < 0.05) but failed to restore the hyperactivity observed in the open field test. Furthermore, pretreatment with E100 (10 mg/kg) the increased microglial activation, proinflammatory cytokines and expression of NF-κB, iNOS, and COX-2 in the cer...Continue Reading
Citations
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