Cocaine is a tropane alkaloid that acts as a central nervous system (CNS) stimulant. As an extract, it is mainly used recreationally, and often illegally for its euphoric and rewarding effects. It is also used in medicine by Indigenous South Americans for various purposes and rarely, but more formally, as a local anaesthetic or diagnostic tool by medical practitioners in more developed countries. It is primarily obtained from the leaves of two Coca species native to South America: Erythroxylum coca and E. novogranatense. After extraction from the plant, and further processing into cocaine hydrochloride, the drug is administered by being either snorted, applied topically to the mouth, or dissolved and injected into a vein. It can also then be turned into free base form, in which it can be heated until sublimated and then the vapours can be inhaled.
Speedball, powerball, or over and under is the polydrug mixture of a stimulant with a depressant, usually an opioid. The most well-known mixture used for recreational drug use is that of cocaine and heroin; however, amphetamines can also be mixed with morphine and/or fentanyl. A speedball may be taken intravenously or by nasal insufflation.
Opioid use disorder (OUD) is a substance use disorder characterized by cravings for opioids, continued use despite physical and/or psychological deterioration, increased tolerance with use, and withdrawal symptoms after discontinuing opioids. Opioid withdrawal symptoms include nausea, muscle aches, diarrhea, trouble sleeping, agitation, and a low mood. Addiction and dependence are important components of opioid use disorder.
Buprenorphine, sold under the brand name Subutex among others, is an opioid used to treat opioid use disorder, acute pain, and chronic pain. It can be used under the tongue (sublingual), in the cheek (buccal), by injection, as a skin patch (transdermal), or as an implant. For opioid use disorder, the patient must have moderate opioid withdrawal symptoms before buprenorphine can be administered under direct observation of a health-care provider.
Substance dependence, also known as drug dependence, is a biopsychological situation whereby an individual's functionality is dependent on the necessitated re-consumption of a psychoactive substance because of an adaptive state that has developed within the individual from psychoactive substance consumption that results in the experience of withdrawal and that necessitates the re-consumption of the drug. A drug addiction, a distinct concept from substance dependence, is defined as compulsive, out-of-control drug use, despite negative consequences. An addictive drug is a drug which is both rewarding and reinforcing. ΔFosB, a gene transcription factor, is now known to be a critical component and common factor in the development of virtually all forms of behavioral and drug addictions, but not dependence.
18-Methoxycoronaridine, also known as zolunicant, is a derivative of ibogaine invented in 1996 by the research team around the pharmacologist Stanley D. Glick from the Albany Medical College and the chemists Upul K. Bandarage and Martin E. Kuehne from the University of Vermont. In animal studies it has proven to be effective at reducing self-administration of morphine, cocaine, methamphetamine, nicotine and sucrose. It has also been shown to produce anorectic effects in obese rats, most likely due to the same actions on the reward system which underlie its anti-addictive effects against drug addiction.
The κ-opioid receptor or kappa opioid receptor, abbreviated KOR or KOP for its ligand ketazocine, is a G protein-coupled receptor that in humans is encoded by the OPRK1 gene. The KOR is coupled to the G protein Gi/G0 and is one of four related receptors that bind opioid-like compounds in the brain and are responsible for mediating the effects of these compounds. These effects include altering nociception, consciousness, motor control, and mood. Dysregulation of this receptor system has been implicated in alcohol and drug addiction.
Nora D. Volkow is a Mexican-American psychiatrist. She is currently the director of the National Institute on Drug Abuse (NIDA), which is part of the National Institutes of Health (NIH).
Cocaine dependence is a neurological disorder that is characterized by withdrawal symptoms upon cessation from cocaine use. It also often coincides with cocaine addiction which is a biopsychosocial disorder characterized by persistent use of cocaine and/or crack despite substantial harm and adverse consequences. The Diagnostic and Statistical Manual of Mental Disorders, classifies problematic cocaine use as a stimulant use disorder. The International Classification of Diseases, includes "Cocaine dependence" as a classification (diagnosis) under "Disorders due to use of cocaine".
Eric J. Nestler is the Nash Family Professor of Neuroscience, Director of the Friedman Brain Institute, and Dean for Academic Affairs at the Icahn School of Medicine at Mount Sinai and Chief Scientific Officer of the Mount Sinai Health System. His research is focused on a molecular approach to drug addiction and depression.
Substance use disorder (SUD) is the persistent use of drugs despite the substantial harm and adverse consequences to one's own self and others, as a result of their use. In perspective, the effects of the wrong use of substances that are capable of causing harm to the user or others, have been extensively described in different studies using a variety of terms such as substance use problems, problematic drugs or alcohol use, and substance use disorder.The National Institute of Mental Health (NIMH) states that "Substance use disorder (SUD) is a treatable mental disorder that affects a person's brain and behavior, leading to their inability to control their use of substances like legal or illegal drugs, alcohol, or medications. Symptoms can be moderate to severe, with addiction being the most severe form of SUD".Substance use disorders (SUD) are considered to be a serious mental illness that fluctuates with the age that symptoms first start appearing in an individual, the time during which it exists and the type of substance that is used. It is not uncommon for those who have SUD to also have other mental health disorders. Substance use disorders are characterized by an array of mental/emotional, physical, and behavioral problems such as chronic guilt; an inability to reduce or stop consuming the substance(s) despite repeated attempts; operating vehicles while intoxicated; and physiological withdrawal symptoms. Drug classes that are commonly involved in SUD include: alcohol (alcoholism); cannabis; opioids; stimulants such as nicotine (including tobacco), cocaine and amphetamines; benzodiazepines; barbiturates; and other substances.
Addiction is a neuropsychological disorder characterized by a persistent and intense urge to use a drug or engage in a behavior that produces natural reward, despite substantial harm and other negative consequences. Repetitive drug use often alters brain function in ways that perpetuate craving, and weakens self-control. This phenomenon – drugs reshaping brain function – has led to an understanding of addiction as a brain disorder with a complex variety of psychosocial as well as neurobiological factors that are implicated in addiction's development.
Mark S. Gold is an American physician, professor, author, and researcher on the effects of opioids, cocaine, tobacco, and other drugs as well as food on the brain and behavior. He is married to Janice Finn Gold.
Carl L. Hart is an American psychologist and neuroscientist, working as the Mamie Phipps Clark Professor of Psychology at Columbia University. Hart is known for his research on drug abuse and drug addiction, his advocacy for the legalization of recreational drugs, and his recreational use of drugs. Hart became the first tenured African-American professor of sciences at Columbia University. He is the author of two books for the general public, High Price: A Neuroscientist's Journey of Self-Discovery that Challenges Everything You Know about Drugs and Society (2013) and Drug Use for Grown-Ups: Chasing Liberty in the Land of Fear (2021).
Yasmin Hurd is the Ward-Coleman Chair of Translational Neuroscience and the Director of the Addiction Institute at Mount Sinai. Hurd holds appointments as faculty of Neuroscience, Psychiatry, Pharmacology and Systems Therapeutics at the Icahn School of Medicine at Mount Sinai in New York City and is globally recognized for her translational research on the underlying neurobiology of substance use disorders and comorbid psychiatric disorders. Hurd's research on the transgenerational effects of early cannabis exposure on the developing brain and behavior and on the therapeutic properties of cannabidiol has garnered substantial media attention. In 2017, Dr. Hurd was elected to the National Academy of Medicine and, in 2022, Dr. Hurd was elected to the National Academy of Sciences (NAS).
There is an ongoing opioid epidemic in the United States, originating out of both medical prescriptions and illegal sources. It has been called "one of the most devastating public health catastrophes of our time". The opioid epidemic unfolded in three waves. The first wave of the epidemic in the United States began in the late 1990s, according to the Centers for Disease Control and Prevention (CDC), when opioids were increasingly prescribed for pain management, resulting in a rise in overall opioid use throughout subsequent years. The second wave was from an expansion in the heroin market to supply already addicted people. The third wave starting in 2013 was marked by a steep 1,040% increase in the synthetic opioid-involved death rate as synthetic opioids flooded the US market.
Ream Al-Hasani is a British neuroscientist and pharmacologist as well as an assistant professor of anesthesiology at Washington University in St. Louis. Al-Hasani studies the endogenous opioid system to understand how to target it therapeutically to treat addiction, affective disorders, and chronic pain.
Camilla Bellone is an Italian neuroscientist and assistant professor in the Department of Basic Neuroscience at the University of Geneva, in Switzerland. Bellone's laboratory explores the molecular mechanisms and neural circuits underlying social behavior and probes how defects at the molecular and circuit level give rise to psychiatric disease states such as Autism Spectrum Disorders.
Jessica Barson is an American neuroscientist and associate professor at Drexel University College of Medicine. Barson investigates neuropeptide signalling in the paraventricular nucleus of the thalamus as well as the nucleus accumbens to understand the neurobiological basis of addiction and elucidate targets for therapy.
Marina Elizabeth Wolf is an American neuroscientist and Professor of Behavioral Neuroscience at Oregon Health & Science University. Previously she served as Professor and Chair of the Department of Neuroscience in the Chicago Medical School at Rosalind Franklin University of Medicine and Science. She has been a pioneer in studying the role of neuronal plasticity in drug addiction. Her laboratory is particularly interested in understanding why individuals recovering from substance use disorder remain vulnerable to drug craving and relapse even after long periods of abstinence.
