title: The relationship of cerebrospinal fluid monoamine metabolites with clinical response to tetrahydroaminoacridine in patients with Alzheimer's disease.
abstract: The effect of tetrahydroaminoacridine (THA) on the cerebrospinal fluid (CSF) monoamine metabolites was studied in 22 patients with Alzheimer's disease in an open treatment trial. The CSF monoamine metabolites were assayed at baseline and after 4 weeks' active THA treatment with 100 mg/d. A statistically significant increase in the CSF homovanillic acid (HVA) and in 5-hydroxyindoleacetic acid (5-HIAA) content was found. The increase of the CSF 5-HIAA level correlated significantly with improvement in cognitive tests and in the Instrumental Activities of Daily Living Scale. We conclude that besides its anticholinesterase activity THA enhances also the monoaminergic neurotransmission in the brain and that the clinical improvement during THA treatment may be partly mediated through the monoaminergic system.
authors.affiliation: Department of Neurology, University of Kuopio, Finland.
authors.forename: K
authors.initials: K
authors.lastname: Alhainen
authors.forename: E L
authors.initials: EL
authors.lastname: Helkala
authors.forename: K
authors.initials: K
authors.lastname: Reinikainen
authors.forename: P
authors.initials: P
authors.lastname: Riekkinen
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000134:cerebrospinal fluid* / Q000188:drug therapy* / Q000523:psychology; D015306:Biogenic Monoamines / Q000134:cerebrospinal fluid*; D005260:Female; D006719:Homovanillic Acid / Q000134:cerebrospinal fluid; D006801:Humans; D006897:Hydroxyindoleacetic Acid / Q000134:cerebrospinal fluid; D008297:Male; D008734:Methoxyhydroxyphenylglycol / Q000134:cerebrospinal fluid; D008875:Middle Aged; D011569:Psychiatric Status Rating Scales; D013619:Tacrine / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D015306:Biogenic Monoamines; D013619:Tacrine; D008734:Methoxyhydroxyphenylglycol; D006897:Hydroxyindoleacetic Acid; D006719:Homovanillic Acid