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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1999-1-26
pubmed:abstractText
The effect of long-term treatment with tacrine (tetrahydroaminoacridine) was studied in three Alzheimer patients (aged 57, 64, and 68 years) with mild dementia. All three patients had a Mini-Mental State Examination score of 24/30 and carried at least one apolipoprotein E (ApoE) epsilon4 allele. Tacrine was given in doses between 80 and to 160 mg daily for 13-31 months. A lower tacrine concentration was observed generally in cerebrospinal fluid (CSF) compared with plasma. The acetylcholinesterase activity in CSF tended to be increased following longer periods of tacrine treatment, whereas the butyrylcholinesterase activity was decreased. The three patients repeatedly underwent positron emission tomography investigation of cerebral blood flow, nicotinic receptors, cerebral glucose metabolism, and electroencephalogram (EEG) and cognitive tests. Positive influences on these parameters were observed following both short-term and long-term treatment with tacrine. Improvement of nicotinic receptors (measured as 11C-nicotine binding), cerebral blood flow, EEG, and some cognitive tests (trail making test, block design test) occurred earlier after initiation of tacrine treatment compared with the glucose metabolism, which was increased after several months of tacrine treatment. An improvement in attention (trail making test) was observed following tacrine as sign for frontal lobe activation (EEG). The functional effects of tacrine in Alzheimer patients appeared to be related to both dose and length of cholinesterase inhibitor treatment.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0893-0341
pubmed:author
pubmed:issnType
Print
pubmed:volume
12
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
228-37
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Long-term tacrine treatment in three mild Alzheimer patients: effects on nicotinic receptors, cerebral blood flow, glucose metabolism, EEG, and cognitive abilities.
pubmed:affiliation
Department of Clinical Neuroscience and Family Medicine, Geriatric Medicine, Karolinska Institutet, Huddinge University Hospital, Sweden.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't