Cerebrospinal fluid levels of diazepam-binding inhibitor in neurodegenerative disorders with dementia.
We investigated CSF levels of diazepam-binding inhibitor (DBI), a recently discovered neuropeptide that allosterically modulates GABAergic transmission, in various neurodegenerative disorders with dementia (28 patients with Parkinson's disease, 10 with Alzheimer's disease, 7 with Huntington's chorea). We applied a battery of neuropsychological tests to determine the degree of dementia and to exclude the presence of mood alterations. CSF DBI levels were elevated in parkinsonian subjects with dementia and in patients with Alzheimer's disease, but decreased in Huntington's chorea patients. We hypothesize that modifications of CSF DBI levels may be related to a functional or structural alteration of the GABAergic system.
Ferrarese
C
C
Neurological Clinic, University of Milan, S. Gerardo Hospital, Monza, Italy.
Appollonio
I
I
Frigo
M
M
Meregalli
S
S
Piolti
R
R
Tamma
F
F
Frattola
L
L
D000328:Adult; D000544:Alzheimer Disease / Q000134:cerebrospinal fluid* / Q000150:complications / Q000523:psychology; D002851:Chromatography, High Pressure Liquid; D003071:Cognition; D003704:Dementia / Q000134:cerebrospinal fluid* / Q000150:complications / Q000523:psychology; D026261:Diazepam Binding Inhibitor; D005260:Female; D006801:Humans; D006816:Huntington Disease / Q000134:cerebrospinal fluid* / Q000150:complications / Q000523:psychology; D008297:Male; D008875:Middle Aged; D009479:Neuropeptides / Q000134:cerebrospinal fluid* / Q000302:isolation & purification; D010300:Parkinson Disease / Q000134:cerebrospinal fluid* / Q000150:complications / Q000523:psychology; D011863:Radioimmunoassay; D012016:Reference Values
D026261:Diazepam Binding Inhibitor; D009479:Neuropeptides