Hallucinogens and Dissociative Drugs
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Hallucinogens - LSD, Peyote, Psilocybin, and PCP
Hallucinogens - LSD, Peyote, Psilocybin, and PCP Hallucinogenic compounds found in some • Psilocybin (4-phosphoryloxy-N,N- plants and mushrooms (or their extracts) dimethyltryptamine) is obtained from have been used—mostly during religious certain types of mushrooms that are rituals—for centuries. Almost all indigenous to tropical and subtropical hallucinogens contain nitrogen and are regions of South America, Mexico, and classified as alkaloids. Many hallucinogens the United States. These mushrooms have chemical structures similar to those of typically contain less than 0.5 percent natural neurotransmitters (e.g., psilocybin plus trace amounts of acetylcholine-, serotonin-, or catecholamine- psilocin, another hallucinogenic like). While the exact mechanisms by which substance. hallucinogens exert their effects remain • PCP (phencyclidine) was developed in unclear, research suggests that these drugs the 1950s as an intravenous anesthetic. work, at least partially, by temporarily Its use has since been discontinued due interfering with neurotransmitter action or to serious adverse effects. by binding to their receptor sites. This DrugFacts will discuss four common types of How Are Hallucinogens Abused? hallucinogens: The very same characteristics that led to • LSD (d-lysergic acid diethylamide) is the incorporation of hallucinogens into one of the most potent mood-changing ritualistic or spiritual traditions have also chemicals. It was discovered in 1938 led to their propagation as drugs of abuse. and is manufactured from lysergic acid, Importantly, and unlike most other drugs, which is found in ergot, a fungus that the effects of hallucinogens are highly grows on rye and other grains. variable and unreliable, producing different • Peyote is a small, spineless cactus in effects in different people at different times. -
Hallucinogens - LSD, Peyote, Psilocybin, and PCP
Information for Behavioral Health Providers in Primary Care Hallucinogens - LSD, Peyote, Psilocybin, and PCP What are Hallucinogens? Hallucinogenic compounds found in some plants and mushrooms (or their extracts) have been used— mostly during religious rituals—for centuries. Almost all hallucinogens contain nitrogen and are classified as alkaloids. Many hallucinogens have chemical structures similar to those of natural neurotransmitters (e.g., acetylcholine-, serotonin-, or catecholamine-like). While the exact mechanisms by which hallucinogens exert their effects remain unclear, research suggests that these drugs work, at least partially, by temporarily interfering with neurotransmitter action or by binding to their receptor sites. This InfoFacts will discuss four common types of hallucinogens: LSD (d-lysergic acid diethylamide) is one of the most potent mood-changing chemicals. It was discovered in 1938 and is manufactured from lysergic acid, which is found in ergot, a fungus that grows on rye and other grains. Peyote is a small, spineless cactus in which the principal active ingredient is mescaline. This plant has been used by natives in northern Mexico and the southwestern United States as a part of religious ceremonies. Mescaline can also be produced through chemical synthesis. Psilocybin (4-phosphoryloxy-N, N-dimethyltryptamine) is obtained from certain types of mushrooms that are indigenous to tropical and subtropical regions of South America, Mexico, and the United States. These mushrooms typically contain less than 0.5 percent psilocybin plus trace amounts of psilocin, another hallucinogenic substance. PCP (phencyclidine) was developed in the 1950s as an intravenous anesthetic. Its use has since been discontinued due to serious adverse effects. How Are Hallucinogens Abused? The very same characteristics that led to the incorporation of hallucinogens into ritualistic or spiritual traditions have also led to their propagation as drugs of abuse. -
Local Anesthetic Half Life (In Hours) Lidocaine 1.6 Mepivacaine 1.9 Bupivacaine 353.5 Prilocaine 1.6 Articaine 0.5
Local Anesthetics • The first local anesthetics History were cocaine and procaine (Novacain) developed in ltlate 1800’s • They were called “esters” because of their chemical composition • Esters had a slow onset and short half life so they did not last long History • Derivatives of esters called “amides” were developed in the 1930’s • Amides had a faster onset and a longer half life so they lasted longer • AidAmides quiklickly repldlaced esters • In dentistry today, esters are only found in topical anesthetics Generic Local Anesthetics • There are five amide anesthetics used in dentistry today. Their generic names are; – lidocaine – mepivocaine – bupivacaine – prilocaine – artica ine • Each is known by at least one brand name Brand Names • lidocaine : Xylocaine, Lignospan, Alphacaine, Octocaine • mepivocaine: Carbocaine, Arestocaine, Isocaine, Polocaine, Scandonest • prilocaine : Citanest, Citanest Forte • bibupivaca ine: MiMarcaine • articaine: Septocaine, Zorcaine About Local Anesthetic (LA) • Local anesthetic (LA) works by binding with sodium channels in neurons preventing depolarization • LA is inactivated at the injection site when it is absorbed into the blood stream and redistributed throughout the body • If enough LA is absorbed, sodium channels in other parts of the body will be blocked, causing systemic side effects About LA • A clinical effect of LAs is dilation blood vessels, speeding up absorption and distribution • To counteract this dilation so anesthesia is prolonged, , a vasoconstrictor is often added to LAs • However, vasoconstrictors have side effects also Metabolism and Excretion • Most amide LAs are metabolized (inactivated) by the liver and excreted by the kidneys. • Prilocaine is partially metabolized by the lungs • Articaine is partially metabolized by enzymes in the bloo d as well as the liver. -
Hallucinogens and Dissociative Drugs
Long-Term Effects of Hallucinogens See page 5. from the director: Research Report Series Hallucinogens and dissociative drugs — which have street names like acid, angel dust, and vitamin K — distort the way a user perceives time, motion, colors, sounds, and self. These drugs can disrupt a person’s ability to think and communicate rationally, or even to recognize reality, sometimes resulting in bizarre or dangerous behavior. Hallucinogens such as LSD, psilocybin, peyote, DMT, and ayahuasca cause HALLUCINOGENS AND emotions to swing wildly and real-world sensations to appear unreal, sometimes frightening. Dissociative drugs like PCP, DISSOCIATIVE DRUGS ketamine, dextromethorphan, and Salvia divinorum may make a user feel out of Including LSD, Psilocybin, Peyote, DMT, Ayahuasca, control and disconnected from their body PCP, Ketamine, Dextromethorphan, and Salvia and environment. In addition to their short-term effects What Are on perception and mood, hallucinogenic Hallucinogens and drugs are associated with psychotic- like episodes that can occur long after Dissociative Drugs? a person has taken the drug, and dissociative drugs can cause respiratory allucinogens are a class of drugs that cause hallucinations—profound distortions depression, heart rate abnormalities, and in a person’s perceptions of reality. Hallucinogens can be found in some plants and a withdrawal syndrome. The good news is mushrooms (or their extracts) or can be man-made, and they are commonly divided that use of hallucinogenic and dissociative Hinto two broad categories: classic hallucinogens (such as LSD) and dissociative drugs (such drugs among U.S. high school students, as PCP). When under the influence of either type of drug, people often report rapid, intense in general, has remained relatively low in emotional swings and seeing images, hearing sounds, and feeling sensations that seem real recent years. -
Monitoring Anesthetic Depth
ANESTHETIC MONITORING Lyon Lee DVM PhD DACVA MONITORING ANESTHETIC DEPTH • The central nervous system is progressively depressed under general anesthesia. • Different stages of anesthesia will accompany different physiological reflexes and responses (see table below, Guedel’s signs and stages). Table 1. Guedel’s (1937) Signs and Stages of Anesthesia based on ‘Ether’ anesthesia in cats. Stages Description 1 Inducement, excitement, pupils constricted, voluntary struggling Obtunded reflexes, pupil diameters start to dilate, still excited, 2 involuntary struggling 3 Planes There are three planes- light, medium, and deep More decreased reflexes, pupils constricted, brisk palpebral reflex, Light corneal reflex, absence of swallowing reflex, lacrimation still present, no involuntary muscle movement. Ideal plane for most invasive procedures, pupils dilated, loss of pain, Medium loss of palpebral reflex, corneal reflexes present. Respiratory depression, severe muscle relaxation, bradycardia, no Deep (early overdose) reflexes (palpebral, corneal), pupils dilated Very deep anesthesia. Respiration ceases, cardiovascular function 4 depresses and death ensues immediately. • Due to arrival of newer inhalation anesthetics and concurrent use of injectable anesthetics and neuromuscular blockers the above classic signs do not fit well in most circumstances. • Modern concept has two stages simply dividing it into ‘awake’ and ‘unconscious’. • One should recognize and familiarize the reflexes with different physiologic signs to avoid any untoward side effects and complications • The system must be continuously monitored, and not neglected in favor of other signs of anesthesia. • Take all the information into account, not just one sign of anesthetic depth. • A major problem faced by all anesthetists is to avoid both ‘too light’ anesthesia with the risk of sudden violent movement and the dangerous ‘too deep’ anesthesia stage. -
Hallucinogens
Hallucinogens What Are Hallucinogens? Hallucinogens are a diverse group of drugs that alter a person’s awareness of their surroundings as well as their thoughts and feelings. They are commonly split into two categories: classic hallucinogens (such as LSD) and dissociative drugs (such as PCP). Both types of hallucinogens can cause hallucinations, or sensations and images that seem real though they are not. Additionally, dissociative drugs can cause users to feel out of control or disconnected from their body and environment. Some hallucinogens are extracted from plants or mushrooms, and others are synthetic (human-made). Historically, people have used hallucinogens for religious or healing rituals. More recently, people report using these drugs for social or recreational purposes. Hallucinogens are a Types of Hallucinogens diverse group of drugs Classic Hallucinogens that alter perception, LSD (D-lysergic acid diethylamide) is one of the most powerful mind- thoughts, and feelings. altering chemicals. It is a clear or white odorless material made from lysergic acid, which is found in a fungus that grows on rye and other Hallucinogens are split grains. into two categories: Psilocybin (4-phosphoryloxy-N,N-dimethyltryptamine) comes from certain classic hallucinogens and types of mushrooms found in tropical and subtropical regions of South dissociative drugs. America, Mexico, and the United States. Peyote (mescaline) is a small, spineless cactus with mescaline as its main People use hallucinogens ingredient. Peyote can also be synthetic. in a wide variety of ways DMT (N,N-dimethyltryptamine) is a powerful chemical found naturally in some Amazonian plants. People can also make DMT in a lab. -
MDMA, Cannabis, and Cocaine Produce Acute Dissociative Symptoms
Psychiatry Research 228 (2015) 907–912 Contents lists available at ScienceDirect Psychiatry Research journal homepage: www.elsevier.com/locate/psychres MDMA, cannabis, and cocaine produce acute dissociative symptoms Dalena van Heugten-Van der Kloet a,b,n, Timo Giesbrecht a, Janelle van Wel a, Wendy M Bosker a,1, Kim PC Kuypers a, Eef L Theunissen a, Desirée B Spronk c,d, Robbert Jan Verkes c,d, Harald Merckelbach a, Johannes G Ramaekers a a Faculty of Psychology and Neuroscience, Maastricht University, The Netherlands b Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom c Department of Psychiatry (966), Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands d Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, The Netherlands article info abstract Article history: Some drugs of abuse may produce dissociative symptoms, but this aspect has been understudied. We Received 4 April 2014 explored the dissociative potential of three recreational drugs (3,4-methylenedioxymethamphetamine Received in revised form (MDMA), cannabis, and cocaine) during intoxication and compared their effects to literature reports of 31 March 2015 dissociative states in various samples. Two placebo-controlled studies were conducted. In Study 1 (N¼16), Accepted 18 April 2015 participants received single doses of 25, 50, and 100 mg of MDMA, and placebo. In Study 2 (N¼21), cannabis Available online 30 April 2015 (THC 300 mg/kg), cocaine (HCl 300 mg), and placebo were administered. Dissociative symptoms as measured Keywords: with the Clinician-Administered Dissociative States Scale (CADSS) significantly increased under the influence Dissociative symptoms of MDMA and cannabis. -
MDMA-Induced Dissociative State Not Mediated by the 5-HT2A Receptor
fphar-08-00455 July 11, 2017 Time: 12:7 # 1 View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Diposit Digital de Documents de la UAB ORIGINAL RESEARCH published: 11 July 2017 doi: 10.3389/fphar.2017.00455 MDMA-Induced Dissociative State not Mediated by the 5-HT2A Receptor Drew J. Puxty1, Johannes G. Ramaekers1, Rafael de la Torre2,3,4, Magí Farré2,5,6, Neus Pizarro2,5, Mitona Pujadas2,3 and Kim P. C. Kuypers1* 1 Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands, 2 Integrative Pharmacology and Neurosciences Systems Research Group, Institut Hospital del Mar d’Investigacions Mèdiques, Barcelona, Spain, 3 Spanish Biomedical Research Centre in Physiopathology of Obesity and Nutrition, Santiago de Compostela, Spain, 4 Facultat de Ciencies de la Salut i de la Vida, Universitat Pompeu Fabra, Barcelona, Spain, 5 Department of Pharmacology, Therapeutic and Toxicology, Universitat Autonoma de Barcelona, Barcelona, Spain, 6 Hospital Universitari Germans Trias i Pujol, Clinical Pharmacology, Badalona, Spain Previous research has shown that a single dose of MDMA induce a dissociative state, by elevating feelings of depersonalization and derealization. Typically, it is assumed that action on the 5-HT2A receptor is the mechanism underlying these psychedelic experiences. In addition, other studies have shown associations between dissociative states and biological parameters (heart rate, cortisol), which are elevated by MDMA. In order to investigate the role of the 5-HT2 receptor in the MDMA-induced dissociative state and the association with biological parameters, a placebo-controlled within- Edited by: subject study was conducted including a single oral dose of MDMA (75 mg), combined Andrew Robert Gallimore, with placebo or a single oral dose of the 5-HT2 receptor blocker ketanserin (40 mg). -
From Sacred Plants to Psychotherapy
From Sacred Plants to Psychotherapy: The History and Re-Emergence of Psychedelics in Medicine By Dr. Ben Sessa ‘The rejection of any source of evidence is always treason to that ultimate rationalism which urges forward science and philosophy alike’ - Alfred North Whitehead Introduction: What exactly is it that fascinates people about the psychedelic drugs? And how can we best define them? 1. Most psychiatrists will define psychedelics as those drugs that cause an acute confusional state. They bring about profound alterations in consciousness and may induce perceptual distortions as part of an organic psychosis. 2. Another definition for these substances may come from the cross-cultural dimension. In this context psychedelic drugs may be recognised as ceremonial religious tools, used by some non-Western cultures in order to communicate with the spiritual world. 3. For many lay people the psychedelic drugs are little more than illegal and dangerous drugs of abuse – addictive compounds, not to be distinguished from cocaine and heroin, which are only understood to be destructive - the cause of an individual, if not society’s, destruction. 4. But two final definitions for psychedelic drugs – and those that I would like the reader to have considered by the end of this article – is that the class of drugs defined as psychedelic, can be: a) Useful and safe medical treatments. Tools that as adjuncts to psychotherapy can be used to alleviate the symptoms and course of many mental illnesses, and 1 b) Vital research tools with which to better our understanding of the brain and the nature of consciousness. Classifying psychedelic drugs: 1,2 The drugs that are often described as the ‘classical’ psychedelics include LSD-25 (Lysergic Diethylamide), Mescaline (3,4,5- trimethoxyphenylathylamine), Psilocybin (4-hydroxy-N,N-dimethyltryptamine) and DMT (dimethyltryptamine). -
Acute Toxicity Associated with the Recreational Use of the Novel Dissociative Psychoactive Substance Methoxphenidine
Zurich Open Repository and Archive University of Zurich Main Library Strickhofstrasse 39 CH-8057 Zurich www.zora.uzh.ch Year: 2014 Acute toxicity associated with the recreational use of the novel dissociative psychoactive substance methoxphenidine Hofer, K E ; Degrandi, C ; Müller, D M ; Zürrer-Härdi, U ; Wahl, S ; Rauber-Lüthy, C ; Ceschi, A Abstract: INTRODUCTION: Methoxphenidine is a novel dissociative designer drug of the diarylethy- lamine class which shares structural features with phencyclidine (PCP), and is not at present subject to restrictive regulations. There is very limited information about the acute toxicity profile of methoxpheni- dine and the only sources are anonymous internet sites and a 1989 patent of the Searle Company. We report a case of analytically confirmed oral methoxphenidine toxicity. CASE DETAILS: A 53-year-old man was found on the street in a somnolent and confusional state. Observed signs and symptoms such as tachycardia (112 bpm), hypertension (220/125 mmHg), echolalia, confusion, agitation, opisthotonus, nys- tagmus and amnesia were consistent with phencyclidine-induced adverse effects. Temperature (99.1°F (37.3°C)) and peripheral oxygen saturation while breathing room air (99%) were normal. Laboratory analysis revealed an increase of creatine kinase (max 865 U/L), alanine aminotransferase (72 U/L) and gamma-glutamyl transpeptidase (123 U/L). Methoxphenidine was identified by a liquid chromatogra- phy tandem mass spectrometry toxicological screening method using turbulent flow online extraction in plasma and urine samples collected on admission. The clinical course was favourable and signs and symptoms resolved with symptomatic treatment. CONCLUSION: Based on this case report and users’ web reports, and compatible with the chemical structure, methoxphenidine produces effects similar to those of the arylcyclohexylamines, as PCP. -
MDMA Get 24/7 Help Now!
MDMA Illicit substances can be categorized into one of three major drug types: depressants, stimulants, and hallucinogens. Depressants consist of substances that slow or “depress” the body’s normal functions. In contrast, stimulants do the opposite: they jump-start the central nervous system, increasing the user’s heart rate, blood pressure, respiration and body temperature. Hallucinogens are unlike either of the other illicit drug groups; as the name suggests, these are drugs that cause hallucinations, whether visual or auditory. Sometimes, illicit drugs can fall into two of these three categories. Methylenedioxy-methamphetamine, more commonly called MDMA, is one such example. It falls into two categories: stimulant and hallucinogen. MDMA drug addiction is one type of addiction treatment available through the Wellness Retreat Recovery program. Get 24/7 help now! All calls are free and confidential! 888-821-0238 MDMA About MDMA Like any other stimulant, MDMA increases the user’s energy, blood pressure, heart rate, and respiration. Still, MDMA stands apart from other stimulant drugs because it triggers a number of effects that are more common among hallucinogens. In fact, MDMA is most well-known for being the active ingredient in Ecstasy, a “club drug” that distorts the user’s senses and evokes uninhibited feelings of sensuality. Other effects include: increased sensory reception (i.e. fabric seems softer, drinks taste stronger, etc.) increased sensitivity to light emotional exacerbation sexual arousal Overall, MDMA has been known to intensity users’ emotional and physical experiences. However, this does not make MDMA a “safe” drug as many users might argue. The Effects of MDMA on the Brain Just like with any other illicit substance, continued use of MDMA can lead to addiction. -
Pharmacology – Inhalant Anesthetics
Pharmacology- Inhalant Anesthetics Lyon Lee DVM PhD DACVA Introduction • Maintenance of general anesthesia is primarily carried out using inhalation anesthetics, although intravenous anesthetics may be used for short procedures. • Inhalation anesthetics provide quicker changes of anesthetic depth than injectable anesthetics, and reversal of central nervous depression is more readily achieved, explaining for its popularity in prolonged anesthesia (less risk of overdosing, less accumulation and quicker recovery) (see table 1) Table 1. Comparison of inhalant and injectable anesthetics Inhalant Technique Injectable Technique Expensive Equipment Cheap (needles, syringes) Patent Airway and high O2 Not necessarily Better control of anesthetic depth Once given, suffer the consequences Ease of elimination (ventilation) Only through metabolism & Excretion Pollution No • Commonly administered inhalant anesthetics include volatile liquids such as isoflurane, halothane, sevoflurane and desflurane, and inorganic gas, nitrous oxide (N2O). Except N2O, these volatile anesthetics are chemically ‘halogenated hydrocarbons’ and all are closely related. • Physical characteristics of volatile anesthetics govern their clinical effects and practicality associated with their use. Table 2. Physical characteristics of some volatile anesthetic agents. (MAC is for man) Name partition coefficient. boiling point MAC % blood /gas oil/gas (deg=C) Nitrous oxide 0.47 1.4 -89 105 Cyclopropane 0.55 11.5 -34 9.2 Halothane 2.4 220 50.2 0.75 Methoxyflurane 11.0 950 104.7 0.2 Enflurane 1.9 98 56.5 1.68 Isoflurane 1.4 97 48.5 1.15 Sevoflurane 0.6 53 58.5 2.5 Desflurane 0.42 18.7 25 5.72 Diethyl ether 12 65 34.6 1.92 Chloroform 8 400 61.2 0.77 Trichloroethylene 9 714 86.7 0.23 • The volatile anesthetics are administered as vapors after their evaporization in devices known as vaporizers.