Biomaterial Database

Differential 3H-imipramine platelet binding in patients with panic disorder and depression. 1987

R B Innis, and D S Charney, and G R Heninger

3H-Imipramine (3H-IMI) binding to platelet membranes was measured in 19 patients with agoraphobia with panic attacks, 9 patients with major depression, and 22 healthy subjects. In comparison to healthy subjects, the maximal number of binding sites (Bmax) was significantly decreased in depressed patients but not in panic disorder patients, and the apparent affinity of binding was slightly decreased in depressed patients but not in panic disorder patients. The Bmax and Kd of 3H-IMI platelet binding did not differ between panic disorder patients with and without a history of a major depressive episode. Thus, 3H-IMI platelet binding is clearly different in patients with panic disorder compared to those with an active depression. Because 3H-IMI binding is associated with the serotonin reuptake site in platelet and brain membranes, these findings give further support to abnormalities in serotonergic function in patients with major depression.

UI	MeSH Term	Description	Entries
D007099	Imipramine	The prototypical tricyclic antidepressant. It has been used in major depression, dysthymia, bipolar depression, attention-deficit disorders, agoraphobia, and panic disorders. It has less sedative effect than some other members of this therapeutic group.	Imidobenzyle,Imizin,4,4'-Methylenebis(3-hydroxy-2-naphthoic acid)-3-(10,11-dihydro-5H-dibenzo(b,f)azepin-5-yl)-N,N-dimethyl-1-propanamine (1:2),Imipramine Hydrochloride,Imipramine Monohydrochloride,Imipramine Pamoate,Janimine,Melipramine,Norchlorimipramine,Pryleugan,Tofranil
D007700	Kinetics	The rate dynamics in chemical or physical systems.
D010200	Panic	A state of extreme acute, intense anxiety and unreasoning fear accompanied by disorganization of personality function.	Panics
D010698	Phobic Disorders	Anxiety disorders in which the essential feature is persistent and irrational fear of a specific object, activity, or situation that the individual feels compelled to avoid. The individual recognizes the fear as excessive or unreasonable.	Claustrophobia,Neuroses, Phobic,Phobia, School,Phobias,Phobic Neuroses,Scolionophobia,Disorder, Phobic,Phobia,Phobic Disorder,School Phobia
D011955	Receptors, Drug	Proteins that bind specific drugs with high affinity and trigger intracellular changes influencing the behavior of cells. Drug receptors are generally thought to be receptors for some endogenous substance not otherwise specified.	Drug Receptors,Drug Receptor,Receptor, Drug
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
D002352	Carrier Proteins	Proteins that bind or transport specific substances in the blood, within the cell, or across cell membranes.	Binding Proteins,Carrier Protein,Transport Protein,Transport Proteins,Binding Protein,Protein, Carrier,Proteins, Carrier
D003866	Depressive Disorder	An affective disorder manifested by either a dysphoric mood or loss of interest or pleasure in usual activities. The mood disturbance is prominent and relatively persistent.	Depression, Endogenous,Depression, Neurotic,Depression, Unipolar,Depressive Syndrome,Melancholia,Neurosis, Depressive,Unipolar Depression,Depressions, Endogenous,Depressions, Neurotic,Depressions, Unipolar,Depressive Disorders,Depressive Neuroses,Depressive Neurosis,Depressive Syndromes,Disorder, Depressive,Disorders, Depressive,Endogenous Depression,Endogenous Depressions,Melancholias,Neuroses, Depressive,Neurotic Depression,Neurotic Depressions,Syndrome, Depressive,Syndromes, Depressive,Unipolar Depressions
D005239	Fear	The affective response to an actual current external danger which subsides with the elimination of the threatening condition.	Threat Cues,Threat Sensitivity,Cue, Threat,Fears,Sensitivity, Threat,Threat Cue,Threat Sensitivities
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man