Andrew F. Scheyer

Andrew F. Scheyer
Institut de neurobiologie de la méditerranée INMED | INMED · Department of Neuroscience

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17
Publications
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384
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Publications

Publications (17)
Article
Full-text available
Background Cannabidiol (CBD) is one of the major constituents of Cannabis sativa L. that lacks psychotomimetic and rewarding properties and inhibits the rewarding and reinforcing effects of addictive drugs such as cocaine, methamphetamine (METH), and morphine. Additionally, CBD's safety profile and therapeutic potential are currently evaluated in s...
Article
Full-text available
Consumption of cannabis during pregnancy and the lactation period is a rising public health concern (Scheyer et al. 2019b). Exposure to synthetic or plant-derived cannabinoids via lactation disrupts the development of GABAergic neurons in the prefrontal cortex and alters early-life behaviors (Scheyer et al. 2020b). Recently, additional data reveale...
Article
Full-text available
Cannabis is the world’s most widely abused illicit drug and consumption amongst women during and surrounding the period of pregnancy is increasing. Previously, we have shown that cannabinoid exposure via lactation during the early postnatal period disrupts early developmental trajectories of prefrontal cortex maturation and induces behavioral abnor...
Article
Cannabis exposure during the perinatal period results in varied and significant consequences in affected offspring. The prevalence of detrimental outcomes of perinatal cannabis exposure is likely to increase in tandem with the broadening of legalization and acceptance of the drug. As such, it is crucial to highlight the immediate and protracted con...
Article
Background: Cannabis usage is increasing with its widespread legalization. Cannabis use by mothers during lactation transfers active cannabinoids to the developing offspring during this critical period and alters postnatal neurodevelopment. A key neurodevelopmental landmark is the excitatory to inhibitory gamma-aminobutyric acid (GABA) switch caus...
Article
Full-text available
Extended-access cocaine self-administration induces a progressive intensification of cue-induced drug craving during withdrawal termed “incubation of cocaine craving”. Rats evaluated after >1 month of withdrawal (when incubation of craving is robust) display alterations in excitatory synapses onto medium spiny neurons (MSNs) of the nucleus accumben...
Preprint
Full-text available
Cannabis is the most widely used illicit drug in the world, and its usage is increasing with its widespread legalization. Use of the drug by mothers during lactation may transfer active cannabinoids to the developing offspring, altering postnatal neurodevelopment during this critical period. During early life, GABA undergoes a functional switch fro...
Article
In this issue of Neuron, Cavaccini et al. (2018) identify and thoroughly describe a previously unknown role for hyper-localized serotonergic signaling in the modulation of striatal projection neuron plasticity using electrophysiological, chemogenetic, and optogenetic approaches in addition to advanced imaging technology. In this issue of Neuron, Ca...
Chapter
Endocannabinoid (eCB) function in the prefrontal cortex (PFC) presents as a highly connected, widespread hub for the modulation of a vast array of synaptic functions. Given the known role of the PFC in a range of disorders from mental retardation, neurodegenerative diseases, and schizophrenia to drug addiction, stress, and anxiety, all of which are...
Article
Full-text available
The reelin gene is a strong candidate in the etiology of several psychiatric disorders such as schizophrenia, major depression, bipolar disorders, and autism spectrum disorders. Most of these diseases are accompanied by cognitive and executive-function deficits associated with prefrontal dysfunctions. Mammalian prefrontal cortex (PFC) development i...
Article
Background: The incubation of cue-induced drug craving in rodents provides a model of persistent vulnerability to craving and relapse in human addicts. After prolonged withdrawal, incubated cocaine craving depends on strengthening of nucleus accumbens (NAc) core synapses through incorporation of Ca(2+)-permeable alpha-amino-3-hydroxy-5-methyl-4-is...
Article
Full-text available
Extended-access cocaine self-administration results in withdrawal-dependent incubation of cocaine craving. Rats evaluated after ∼1 month of withdrawal from such regimens ("incubated rats") exhibit changes in medium spiny neurons (MSNs) of the nucleus accumbens (NAc) that include accumulation of Ca(2+)-permeable AMPA receptors (CP-AMPARs) and a swit...
Article
Full-text available
Cue-induced cocaine craving is a major cause of relapse in abstinent addicts. In rats, cue-induced craving progressively intensifies (incubates) during withdrawal from extended-access cocaine self-administration. After ∼1 month of withdrawal, incubated craving is mediated by Ca(2+)-permeable AMPA receptors (CP-AMPARs) that accumulate in the nucleus...
Article
Ca(2+)-permeable AMPA receptors (CP-AMPARs) accumulate in the nucleus accumbens (NAc) after ~1 month of withdrawal from a cocaine self-administration regimen (6 h/d, 10d). This is functionally significant because CP-AMPARs mediate the "incubated" cue-induced cocaine craving produced by this regimen. Our present goal was to determine if other common...

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