Cocaine Discovery
Cocaine Discovery - Related Videos
07:51
A Protocol for Measuring Cue Reactivity in a Rat Model of Cocaine Use Disorder
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Cited by 6 •
2018
Cue reactivity is conceptualized as sensitivity to cues linked with drug-taking experiences that contribute to craving and relapse in abstinent humans. Cue reactivity is modeled in rats by measuring attentional orientation toward drug-associated cues that results in appetitive approach behavior in a cue reactivity test following self-administration and forced abstinence.
08:54
A Procedure for Studying the Footshock-Induced Reinstatement of Cocaine Seeking in Laboratory Rats
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Cited by 14 •
2011
Animal models of relapse, known as reinstatement procedures, have been used extensively to study the role of stress in relapse to drug seeking. Here, we report on a method for inducing the reinstatement of cocaine seeking in laboratory rats via acute exposures to mild, intermittent electric footshock.
10:28
Assessment of Cocaine-induced Behavioral Sensitization and Conditioned Place Preference in Mice
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Cited by 19 •
2016
This protocol is intended to enable researchers to conduct experiments designed to test these aspects of addiction using the conditioned place preference and locomotor behavioral sensitization assays.
08:22
Stereotaxic Microinjection of Viral Vectors Expressing Cre Recombinase to Study the Role of Target Genes in Cocaine Conditioned Place Preference
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Cited by 2 •
2013
This article describes how to microinject viral vectors into mouse brain and then test in a conditioned place preference paradigm that includes an acquisition, extinction and reinstatement phase.
01:24
CNS Stimulants: Cocaine, Amphetamines and Cannabinoids
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2024
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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Cocaine’s local anesthetic action depends primarily on blocking voltage-gated sodium channels. These channels are required for nerve impulse transmission, so their inhibition prevents impulses from traveling through affected nerves. This mechanism explains why the compound can produce localized numbness and why its early pharmacological importance was distinct from its effects on reward, arousal, and dependence.
In addition to sodium-channel blockade, cocaine inhibits transporters for dopamine, norepinephrine, and serotonin. This activity links the compound to changes in reward, arousal, and dependence, extending its pharmacological significance beyond local anesthesia. The combination of ion-channel and transporter effects helps explain why cocaine became relevant to both anesthetic research and the study of addictive drugs.
The same compound can produce a clinically useful effect while also creating substantial pharmacological concerns. Its local numbness supported anesthetic practice, whereas transporter-related effects connected it with reward, arousal, and dependence. This contrast made cocaine discovery important for evaluating natural products as medicines while recognizing the risks of misuse and toxicity.
Historical investigation proceeded by purifying the alkaloid, characterizing its capacity to produce local numbness, and examining additional pharmacological effects. This sequence connected a plant-derived substance with specific physiological actions rather than treating coca leaves as a single undifferentiated source. It also enabled subsequent study of mechanisms associated with addictive drugs.
Purification allowed scientists to study cocaine as an individual alkaloid and relate its effects to identifiable pharmacological actions. Researchers could distinguish local anesthetic activity from effects associated with dopamine, norepinephrine, and serotonin transporters. In pharmacology, this demonstrates how isolating a natural product can reveal both therapeutic potential and important liabilities.
Cocaine discovery provides a case study in how natural-product investigation can influence clinical practice and basic drug research simultaneously. The compound contributed to anesthetic practice while also drawing attention to addictive drugs, dependence, and toxicity. Its history helps pharmacology connect molecular targets, observable effects, medical applications, and risks within one example.