? Emerging evidence supports the idea that adolescence is a unique developmental period during which time? individuals are more likely to experiment with drugs of abuse and are at greater risk for subsequent? addiction. There is a strong correlation between the onset of nicotine addiction at an early age and addiction? to alcohol as well as a heightened vulnerability to addiction to either ethanol or nicotine when use is initiated? during adolescence. When the brain is exposed to drugs of abuse, adaptive changes take place that? contribute to the addictive process. Evidence demonstrates that many drugs alter the expression and activity? of two major transcription factors, viz., cAMP response element binding protein (CREB) and deltaFosB (a? truncated form of FosB) and that these alterations lead to the expression of genes thought to mediate the? addictive process. Although studies have suggested that CREB and deltaFosB may represent a common? cellular target for the action of addictive drugs, few studies have focused on the cellular consequences of? exposure to nicotine and subsequent vulnerability to alcohol, targeting the two most widely used/abused and? coabused compounds in the adolescent population.
Philpot, Rex M; Engberg, Melanie E; Wecker, Lynn (2014) Ethanol conditioned place preference and alterations in ?FosB following adolescent nicotine administration differ in rats exhibiting high or low behavioral reactivity to a novel environment. Behav Brain Res 262:101-8 |
Philpot, Rex M; Engberg, Melanie E; Wecker, Lynn (2012) Effects of nicotine exposure on locomotor activity and pCREB levels in the ventral striatum of adolescent rats. Behav Brain Res 230:62-8 |
Philpot, Rex M; Wecker, Lynn; Kirstein, Cheryl L (2009) Repeated ethanol exposure during adolescence alters the developmental trajectory of dopaminergic output from the nucleus accumbens septi. Int J Dev Neurosci 27:805-15 |
Philpot, Rex M; Wecker, Lynn (2008) Dependence of adolescent novelty-seeking behavior on response phenotype and effects of apparatus scaling. Behav Neurosci 122:861-75 |