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Related Concept Videos

Drug Abuse and Addiction: Pharmacological Phenomena01:15

Drug Abuse and Addiction: Pharmacological Phenomena

Drug dependence, abuse, and addiction are complex phenomena that can precipitate various abnormal states. Physical dependence refers to a state of pharmacological adaptation to a drug. This adaptation often results in tolerance—a reduced response to the drug after repeated administrations. When the drug use is abruptly stopped, withdrawal symptoms occur due to the body's need to readjust from the pharmacologically induced imbalance. However, tolerance and withdrawal symptoms do not necessarily...
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Medications are typically administered to achieve therapeutic effects. Some drugs can modify an individual's mood and perception, frequently resulting in various enjoyable experiences. However, this can result in drug dependency, a condition marked by continuous drug use despite potential negative consequences. Drug dependency primarily falls into two categories: psychological and physical dependence. Psychological dependence occurs when the pleasurable feelings induced by the drug...
CNS Stimulants: Cocaine, Amphetamines and Cannabinoids01:24

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CNS stimulants, such as cocaine, amphetamines, and cannabinoids, have varying structures and mechanisms of action that lead to different therapeutic effects and side effects. Cocaine, with its molecular formula C17H21NO4, is a tropane alkaloid and a tertiary amino compound. It has two chemical forms: the hydrochloride salt and the "freebase." The former is in powder form, while the latter involves removing the hydrochloride salt to create a form that can be smoked. Cocaine exerts its effects by...
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Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
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Related Experiment Video

Updated: Jun 9, 2026

Assessment of Cocaine-induced Behavioral Sensitization and Conditioned Place Preference in Mice
10:28

Assessment of Cocaine-induced Behavioral Sensitization and Conditioned Place Preference in Mice

Published on: February 18, 2016

MeCP2 and drug addiction.

Jian Feng, Eric J Nestler

    Nature Neuroscience
    |August 27, 2010
    PubMed
    Summary

    The protein MeCP2, implicated in Rett syndrome, regulates responses to psychostimulant drugs. Epigenetic mechanisms involving MeCP2 are crucial for developing drug addiction.

    Area of Science:

    • Neuroscience
    • Genetics
    • Pharmacology

    Background:

    • Rett syndrome is a neurodevelopmental disorder linked to mutations in the methyl CpG-binding protein 2 (MeCP2) gene.
    • Psychostimulant drugs, such as amphetamines and cocaine, are widely used and can lead to addiction.

    Discussion:

    • Two studies reveal that MeCP2 plays a critical role in modulating behavioral responses to psychostimulants.
    • These studies uncover distinct molecular pathways through which MeCP2 influences these behaviors.
    • The findings highlight the significance of epigenetic regulation in the context of psychostimulant use and addiction.

    Key Insights:

    • MeCP2 is essential for normal behavioral responses to psychostimulants.
    • Epigenetic dysregulation by MeCP2 contributes to the development of drug addiction.

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    Last Updated: Jun 9, 2026

    Assessment of Cocaine-induced Behavioral Sensitization and Conditioned Place Preference in Mice
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    Assessment of Cocaine-induced Behavioral Sensitization and Conditioned Place Preference in Mice

    Published on: February 18, 2016

    Reinstatement of Drug-seeking in Mice Using the Conditioned Place Preference Paradigm
    08:29

    Reinstatement of Drug-seeking in Mice Using the Conditioned Place Preference Paradigm

    Published on: June 7, 2018

    A Protocol for Measuring Cue Reactivity in a Rat Model of Cocaine Use Disorder
    07:51

    A Protocol for Measuring Cue Reactivity in a Rat Model of Cocaine Use Disorder

    Published on: June 18, 2018

  • Understanding MeCP2's role offers new avenues for addiction research.
  • Outlook:

    • Further investigation into MeCP2-mediated epigenetic mechanisms could lead to novel therapeutic strategies for addiction.
    • Exploring the interplay between MeCP2, neurodevelopment, and substance use disorders is warranted.
    • These findings open new research directions in the fields of neuroepigenetics and addiction pharmacology.