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Encyclopedia > Cocaine dependence
Cocaine dependence
Classification & external resources
ICD-10 F14..2
ICD-9 304.2
eMedicine med/3116 
MeSH D019970

Cocaine dependence (or addiction) is physical and psychological dependency on the regular use of cocaine. It can result in physiological damage, lethargy, depression, or a potentially fatal overdose. The International Statistical Classification of Diseases and Related Health Problems (most commonly known by the abbreviation ICD) provides codes to classify diseases and a wide variety of signs, symptoms, abnormal findings, complaints, social circumstances and external causes of injury or disease. ... The International Statistical Classification of Diseases and Related Health Problems 10th Revision (ICD-10) is a coding of diseases and signs, symptoms, abnormal findings, complaints, social circumstances and external causes of injury or diseases, as classified by the World Health Organization (WHO). ... // F00-F99 - Mental and behavioural disorders (F00-F09) Organic, including symptomatic, mental disorders (F00) Dementia in Alzheimers disease (F01) Vascular dementia (F011) Multi-infarct dementia (F02) Dementia in other diseases classified elsewhere (F020) Dementia in Picks disease (F021) Dementia in Creutzfeldt-Jakob disease (F022) Dementia in Huntingtons... The International Statistical Classification of Diseases and Related Health Problems (most commonly known by the abbreviation ICD) provides codes to classify diseases and a wide variety of signs, symptoms, abnormal findings, complaints, social circumstances and external causes of injury or disease. ... The following is a list of codes for International Statistical Classification of Diseases and Related Health Problems. ... eMedicine is an online clinical medical knowledge base that was founded in 1996. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... Cocaine is a crystalline tropane alkaloid that is obtained from the leaves of the coca plant. ...

Contents

Presentation

The immediate craving of the addict for more soon after use is due the short-lived high that usually subsides within an hour, leading to prolonged, multi-dose binge use. When administration stops after binge use, it is followed by a "crash" (also known as a "come down"), the onset of severely dysphoric mood with escalating exhaustion until sleep is achieved, which is sometimes accomplished by taking sleeping medications, or sedatives, a popular one being Seroquel, or by combination use of alcohol and cannabis. Resumption of use may occur upon awakening or may not occur for several days, but the intense euphoria of such use can, as it has in many users, produce intense craving and develop rather quickly into addiction. The risk[1] of becoming cocaine-dependent within 2 years of first use (recent-onset) is 5-6%; after 10 years, it's 15-16%. These are the aggregate rates for all types of use considered, i.e., smoking, snorting, injecting. Among recent-onset users, the relative rates are higher for smoking (3.4 times) and much higher for injecting. They also vary, based on other characteristics, such as gender: among recent-onset users, females are 3.3 times more likely to become addicted, compared to males; age: among recent-onset users, those who started using at ages 12 or 13 were 4 times as likely to become addicted, compared to those who started between ages 18 and 20; and race: among recent-onset users, non-Hispanic Blacks are 7 times as likely to become addicted, compared to non-Hispanic Whites. Many habitual abusers develop a transient manic-like condition similar to amphetamine psychosis and schizophrenia, whose symptoms include aggression, severe paranoia, and tactile hallucinations (including the feeling of insects under the skin, or "coke bugs") during binges.[2] A sedative is a substance that depresses the central nervous system (CNS), resulting in calmness, relaxation, reduction of anxiety, sleepiness, and slowed breathing, as well as slurred speech, staggering gait, poor judgment, and slow, uncertain reflexes. ... Quetiapine (IPA: , kwe-TYE-a-peen), marketed by AstraZeneca with the brand name Seroquel, belongs to a series of neuroleptics known as atypical antipsychotics, which have, over the last two decades, become increasingly popular alternatives to typical antipsychotics, such as haloperidol. ... Amphetamine psychosis is a form of psychosis which can result from amphetamine or methamphetamine use. ...


Cocaine has positive reinforcement effects, which refers to the effect that certain stimuli have on behavior. Good feelings become associated with the drug, causing a frequent user to take the drug as a response to bad news or mild depression. This activation strengthens the response that was just made. If the drug was taken by a fast acting route such as injection or inhalation, the response will be the act of taking more cocaine, so the response will be reinforced. Powder cocaine, being a club drug is mostly consumed in the evening and night hours. Because cocaine is a stimulant, a user will often drink large amounts of alcohol during and after usage or smoke cannabis to dull "crash" or "come down" effects and hasten slumber. Benzodiazepines (e.g., Xanax®, Rohypnol®) are also used for this purpose. Other drugs such as heroin and various pharmaceuticals are often used to amplify reinforcement or to minimize such negative effects, further increasing addiction potential and harmfulness. In everyday language depression refers to any downturn in mood, which may be relatively transitory and perhaps due to something trivial. ... Club drugs are a loosely defined category of recreational drugs which are popular at dance clubs, parties, and rock concerts. ... Stimulants are drugs that temporarily increase alertness and wakefulness. ... This article does not cite any references or sources. ... Look up Cannabis in Wiktionary, the free dictionary. ... Benzodiazepine tablets The benzodiazepines are a class of drugs with hypnotic, anxiolytic, anticonvulsant, amnestic and muscle relaxant properties. ... For other uses, see Heroin (disambiguation). ...


It has been shown in studies that rhesus monkeys, provided with a mechanism of cocaine self-administration, prefer the drug over food that is in the cage. This happens even when the monkeys are starving.[3] Binomial name Macaca mulatta Zimmermann, 1780 The Rhesus Macaque (Macaca mulatta), often called the Rhesus Monkey, is one of the best known species of Old World monkeys. ...

Positron Emission Tomography scans showing the average level of dopamine receptors in six primates' brains. Red is high- and blue is low-concentration of dopamine receptors. The higher the level of dopamine, the fewer receptors there will be.

It is speculated that cocaine's addictive properties stem partially from its DAT-blocking effects (in particular, increasing the dopaminergic transmission from ventral tegmental area neurons). However, a study has shown that mice with no dopamine transporters still exhibit the rewarding effects of cocaine administration.[4] Later work demonstrated that a combined DAT/SERT knockout eliminated the rewarding effects.[5] The rewarding effects of cocaine are influenced by circadian rhythms,[6] possibly by involving a set of genes termed "clock genes".[7] (Work of the Brookhaven National Laboratory. ... (Work of the Brookhaven National Laboratory. ... Image of a typical positron emission tomography (PET) facility Positron emission tomography (PET) is a nuclear medicine medical imaging technique which produces a three-dimensional image or map of functional processes in the body. ... The dopamine transporter or DAT is a monoamine transporter that is specific for clearing the neurotransmitter dopamine out of the synaptic cleft and into a glial cell or the presynaptic neuron. ... The ventral tegmentum or the ventral tegmental area (VTA) is part of the midbrain, lying close to the substantia nigra and the red nucleus. ... The Circadian rhythm is a name given to the internal body clock that regulates the (roughly) 24 hour cycle of biological processes in animals and plants. ...


However, chronic cocaine addiction is not solely due to cocaine reward. Chronic repeated use is needed to produce cocaine-induced changes in brain reward centers and consequent chronic dysphoria (described above under "Effects and Health Issues - Chronic"). Dysphoria magnifies craving for cocaine because cocaine reward rapidly, albeit transiently, improves mood. This contributes to continued use and a self-perpetuating, worsening condition, since those addicted usually cannot appreciate that long-term effects are opposite those occurring immediately after use.


Treatment

Cognitive Behavioral Therapy (CBT) combined with Motivational Therapy (MT) proven to be effective to treat drug and alcohol addictions. Cocaine vaccines are on trial that will stop desirable effects from the drug. The National Institutes of Health of US, particularly National Institute on Drug Abuse (NIDA) is researching modafinil, a narcolepsy drug and mild stimulant, as a potential cocaine treatment. Twelve-step programs such as Cocaine Anonymous (modeled on Alcoholics Anonymous) are claimed by participants to be helpful in achieving long-term abstinence; however, the 12 step based programs have no statistically-measurable effect and does not release any quantifiable measure of its success rates. A Cognitive Behavioral Therapy (CBT) is a psychotherapy based on modifying cognitions, assumptions, beliefs and behaviors, with the aim of influencing disturbed emotions. ... Cover of a NIDA educational booklet. ... Modafinil is a eugeroic drug generally prescribed to treat narcolepsy, made by the pharmaceutical company Cephalon Inc. ... // A Twelve-step program is a set of guiding principles for recovery from addictive, compulsive, or other behavioral problems, originally developed by the fellowship of Alcoholics Anonymous (A.A.) to guide recovery from alcoholism. ... Cocaine Anonymous (CA), is a Twelve Step Program form people addicted to cocaine and possibly other drugs. ... Alcoholics Anonymous (AA) is an informal society for recovering alcoholics. ...


Bupropion

Bupropion, an antidepressant, is U.S. FDA approved for the treatment of depression ("cocaine blues") associated with ending cocaine use. Bupropion (INN; also amfebutamone,[1] brand names Wellbutrin, Zyban, Budeprion and Buproban) is an atypical antidepressant, which acts as a norepinephrine reuptake inhibitor and dopamine reuptake inhibitor,[2] and a nicotinic antagonist. ...


GVG

Studies have shown that gamma vinyl-gamma-aminobutyric acid (gamma vinyl-GABA, or GVG), a drug normally used to treat epilepsy, blocks cocaine's action in the brains of primates. GVG increases the amount of the neurotransmitter GABA in the brain and reduces the level of dopamine in the region of the brain that is thought to be involved in addiction. In January 2005 the U.S. Food and Drug Administration gave permission for a Phase I clinical trial of GVG for the treatment of addiction. Another drug currently tested for anti-addictive properties is the cannabinoid antagonist rimonabant. Vigabatrin is an anticonvulsant that inhibits the catabolism of GABA. It is an analog of GABA, but it is not a receptor agonist. ... The human brain In animals, the brain (enkephalos) (Greek for in the skull), is the control center of the central nervous system, responsible for behavior. ... Families 15, See classification A primate is any member of the biological order Primates, the group that contains all the species commonly related to the lemurs, monkeys, and apes, with the latter category including humans. ... Gamma-aminobutyric acid (usually abbreviated to GABA) is an inhibitory neurotransmitter found in the nervous systems of widely divergent species. ... For other uses, see Dopamine (disambiguation). ... The United States Food and Drug Administration is the government agency responsible for regulating food, dietary supplements, drugs, cosmetics, medical devices, biologics and blood products in the United States. ... In health care, including medicine, a clinical trial (synonyms: clinical studies, research protocols, medical research) is a process in which a medicine or other medical treatment is tested for its safety and effectiveness, often in comparison to existing treatments. ... Rimonabant (SR141716) is an anorectic anti-obesity drug. ...


GBR 12909

GBR 12909 (Vanoxerine) is a selective dopamine uptake inhibitor. Because of this, it reduces cocaine's effect on the brain, and may help to treat cocaine addiction. Studies have shown that GBR, when given to primates, suppresses cocaine self-administration. Vanoxerine, also known as GBR-12909, is a piperazine derivative which is a potent and selective dopamine reuptake inhibitor. ... This does not cite any references or sources. ...


Venlafaxine

Venlafaxine (Effexor®), although not a dopamine re-uptake inhibitor, is a serotonin-norepinephrine reuptake inhibitor that has been successfully used to combat the depression caused by cocaine withdrawal and to a lesser extent, the addiction associated with the drug itself. Venlafaxine hydrochloride (Effexor) is an antidepressant of the serotonin-norepinephrine reuptake inhibitor (SNRI) class. ...


TA-CD

TA-CD is a vaccine in development which stops cocaine from crossing the blood-brain barrier, negating all psychostimulant effects. It also causes it to be attacked by endogenous antibodies, which destroy the molecule. A vaccine is an antigenic preparation used to establish immunity to a disease. ... The blood-brain barrier (BBB) is a membranic structure that acts primarily to protect the brain from chemicals in the blood, while still allowing essential metabolic function. ... Wikipedia does not yet have an article with this exact name. ...


References

  1. ^ O'Brien MS, Anthony JC (2005). “Risk of becoming cocaine dependent: epidemiological estimates for the United States, 2000-2001.”. Neuropsychopharmacology 30: 1006–1018. 
  2. ^ Gawin. FH. (1991). “Cocaine addiction: Psychology and neurophysiology”. Science 251: 1580–1586. 
  3. ^ Aigner TG, Balster RL. “Choice behavior in rhesus monkeys: cocaine versus food” Science 201: 534-535. 
  4. ^ Sora, et al. (June 23, 1998). “Cocaine reward models: Conditioned place preference can be established in dopamine- and in serotonin-transporter knockout mice”. PNAS 95 (13): 7600–7704. 
  5. ^ Sora, et al. (April 24, 2001). “Molecular mechanisms of cocaine reward: Combined dopamine and serotonin transporter knockouts eliminate cocaine place preference”. PNAS 98 (9): 5300–5305. 
  6. ^ Kurtuncu et al. (April 12, 2004). “Involvement of the pineal gland in diurnal cocaine reward in mice”. European Journal of Pharmacology 489 (3): 203–205. 
  7. ^ Yuferov V, Butelman ER, Kreek MJ (2005). "Biological clock: biological clocks may modulate drug addiction". Eur. J. Hum. Genet. 13 (10): 1101–3. doi:10.1038/sj.ejhg.5201483. PMID 16094306. 


 
 

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