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Platelet serotonin, monoamine oxidase activity, and [3H]paroxetine binding related to impulsive suicide attempts and borderline personality disorder. 1998

R J Verkes, and R C Van der Mast, and A J Kerkhof, and D Fekkes, and M W Hengeveld, and J P Tuyl, and G M Van Kempen
Department of Psychiatry, Leiden University, The Netherlands.

BACKGROUND The aim of the present study was to examine the relationship between suicidal behavior and impulsiveness, and more generally borderline personality disorder on the one hand, and platelet indicators of central serotonergic function on the other. METHODS After a suicide attempt platelet serotonergic measures were obtained from 144 patients with at least one previous attempt. A major DSM-III-R Axis I diagnosis and the use of antidepressants were reasons for exclusion. RESULTS Platelet monoamine oxidase (MAO) activity was negatively correlated with the personality traits "multi-impulsive behavior" and "disinhibition." In accordance, platelet MAO activity was also lower in patients with less-planned suicide attempts. Platelet serotonin (5-HT) and recidivism were positively correlated with borderline personality disorder, in particular chronic feelings of emptiness. Platelet 5-HT was lower in patients with alcohol abuse. The maximum number of binding sites (Bmax) for paroxetine binding was positively correlated with "sensation seeking." CONCLUSIONS These findings support the hypothesis that serotonergic involvement in impulsive suicidal behavior is mediated by the relationship between serotonergic function and impulsiveness as personality trait. Other borderline personality traits relevant to recurrent suicidal behavior, in particular chronic feelings of emptiness, appear also related to serotonergic measures.

UI MeSH Term Description Entries
D007175 Impulsive Behavior An act performed without delay, reflection, voluntary direction or obvious control in response to a stimulus. Impulsivity,Behavior, Impulsive,Behaviors, Impulsive,Impulsive Behaviors,Impulsivities
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
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
D011569 Psychiatric Status Rating Scales Standardized procedures utilizing rating scales or interview schedules carried out by health personnel for evaluating the degree of mental illness. Factor Construct Rating Scales (FCRS),Katz Adjustment Scales,Lorr's Inpatient Multidimensional Psychiatric Rating Scale,Wittenborn Scales,Edinburgh Postnatal Depression Scale,Mini International Neuropsychiatric Interview
D012016 Reference Values The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality. Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference
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
D001883 Borderline Personality Disorder A personality disorder marked by a pattern of instability of interpersonal relationships, self-image, and affects, and marked impulsivity beginning by early adulthood and present in a variety of contexts. (DSM-IV) Personality Disorder, Borderline,Disorder, Borderline Personality,Borderline Personality Disorders,Disorders, Borderline Personality,Personality Disorders, Borderline
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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