Biomaterial Database

Low platelet monoamine oxidase activity in human alcoholics. 1977

A Wiberg, and C G Gottfries, and L Oreland

Platelet monoamine oxidase (MAO) activity was found to be significantly reduced in human alcoholics as compared to matched controls. A probable transitory increase in activity was observed during the abstinence phase. The low platelet MAO activity was not due to iron deficiency or to the presence of acetaldehyde. Since we have previously found a lowered MAO activity in the brains of suicide victims, especially in those with a previous history of alcohol abuse, we suggest that low platelet MAO activity reflects a primarily "weak" monoaminergic system in the CNS which causes an increased vulnerability to alcohol abuse and suicidal behaviour.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008995	Monoamine Oxidase	An enzyme that catalyzes the oxidative deamination of naturally occurring monoamines. It is a flavin-containing enzyme that is localized in mitochondrial membranes, whether in nerve terminals, the liver, or other organs. Monoamine oxidase is important in regulating the metabolic degradation of catecholamines and serotonin in neural or target tissues. Hepatic monoamine oxidase has a crucial defensive role in inactivating circulating monoamines or those, such as tyramine, that originate in the gut and are absorbed into the portal circulation. (From Goodman and Gilman's, The Pharmacological Basis of Therapeutics, 8th ed, p415) EC 1.4.3.4.	Amine Oxidase (Flavin-Containing),MAO,MAO-A,MAO-B,Monoamine Oxidase A,Monoamine Oxidase B,Type A Monoamine Oxidase,Type B Monoamine Oxidase,Tyramine Oxidase,MAO A,MAO B,Oxidase, Monoamine,Oxidase, Tyramine
D001792	Blood Platelets	Non-nucleated disk-shaped cells formed in the megakaryocyte and found in the blood of all mammals. They are mainly involved in blood coagulation.	Platelets,Thrombocytes,Blood Platelet,Platelet,Platelet, Blood,Platelets, Blood,Thrombocyte
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000437	Alcoholism	A primary, chronic disease with genetic, psychosocial, and environmental factors influencing its development and manifestations. The disease is often progressive and fatal. It is characterized by impaired control over drinking, preoccupation with the drug alcohol, use of alcohol despite adverse consequences, and distortions in thinking, most notably denial. Each of these symptoms may be continuous or periodic. (Morse & Flavin for the Joint Commission of the National Council on Alcoholism and Drug Dependence and the American Society of Addiction Medicine to Study the Definition and Criteria for the Diagnosis of Alcoholism: in JAMA 1992;268:1012-4)	Alcohol Abuse,Alcoholic Intoxication, Chronic,Ethanol Abuse,Alcohol Addiction,Alcohol Dependence,Alcohol Use Disorder,Abuse, Alcohol,Abuse, Ethanol,Addiction, Alcohol,Alcohol Use Disorders,Chronic Alcoholic Intoxication,Dependence, Alcohol,Intoxication, Chronic Alcoholic,Use Disorders, Alcohol
D013375	Substance Withdrawal Syndrome	Physiological and psychological symptoms associated with withdrawal from the use of a drug after prolonged administration or habituation. The concept includes withdrawal from smoking or drinking, as well as withdrawal from an administered drug.	Drug Withdrawal Symptoms,Withdrawal Symptoms,Drug Withdrawal Symptom,Substance Withdrawal Syndromes,Symptom, Drug Withdrawal,Symptom, Withdrawal,Symptoms, Drug Withdrawal,Symptoms, Withdrawal,Syndrome, Substance Withdrawal,Syndromes, Substance Withdrawal,Withdrawal Symptom,Withdrawal Symptom, Drug,Withdrawal Symptoms, Drug,Withdrawal Syndrome, Substance,Withdrawal Syndromes, Substance
D013405	Suicide	The act of killing oneself.	Suicides