Chronic amphetamine treatment reduces NGF and BDNF in the rat brain - PubMed (original) (raw)
Chronic amphetamine treatment reduces NGF and BDNF in the rat brain
Francesco Angelucci et al. Eur Neuropsychopharmacol. 2007 Dec.
Abstract
Amphetamines (methamphetamine and d-amphetamine) are dopaminergic and noradrenergic agonists and are highly addictive drugs with neurotoxic effect on the brain. In human subjects, it has also been observed that amphetamine causes psychosis resembling positive symptoms of schizophrenia. Neurotrophins are molecules involved in neuronal survival and plasticity and protect neurons against (BDNF) are the most abundant neurotrophins in the central nervous system (CNS) and are important survival factors for cholinergic and dopaminergic neurons. Interestingly, it has been proposed that deficits in the production or utilization of neurotrophins participate in the pathogenesis of schizophrenia. In this study in order to investigate the mechanism of amphetamine-induced neurotoxicity and further elucidate the role of neurotrophins in the pathogenesis of schizophrenia we administered intraperitoneally d-amphetamine for 8 days to rats and measured the levels of neurotrophins NGF and BDNF in selected brain regions by ELISA. Amphetamine reduced NGF levels in the hippocampus, occipital cortex and hypothalamus and of BDNF in the occipital cortex and hypothalamus. Thus the present data indicate that chronic amphetamine can reduce the levels of NGF and BDNF in selected brain regions. This reduction may account for some of the effects of amphetamine in the CNS neurons and provides evidences for the role of neurotrophins in schizophrenia.
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