title: Comparison of DSIP- (delta sleep-inducing peptide) and P-DSIP-like (phosphorylated) immunoreactivity in cerebrospinal fluid of patients with senile dementia of Alzheimer type, multi-infarct syndrome, communicating hydrocephalus and Parkinson's disease.
abstract: The concentrations of delta sleep-inducing peptide (DSIP)-like (DSIP-LI) and P-DSIP-like (phosphorylated, Ser7) immunoreactivity (P-DSIP-LI) were measured by specific radioimmunoassay in the cerebrospinal fluid (CSF) of patients with senile dementia of the Alzheimer type [SDAT, subdivided into early (S1), middle (S2) and late dementia (S3)], multi-infarct dementia (MD), Parkinson's disease (PD), vascular disease (VD) and communicating hydrocephalus (H), as well as in control patients (C1, C2). Mean DSIP-LI and P-DSIP-LI concentrations were found to be significantly higher in the elderly control group (C1, mean age 83 +/- 5 years) than in the middle-aged control group (C2, mean age 40 +/- 16 years). DSIP-LI and P-DSIP-LI were positively correlated with age in both control groups. Significant decreases of DSIP-LI compared with age-matched controls (C1) were observed for S2, S3, MD, PD, VD and H. In contrast, no significant differences corresponding to pathology were found for P-DSIP-LI.
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000134:cerebrospinal fluid*; D003701:Delta Sleep-Inducing Peptide / Q000031:analogs & derivatives / Q000134:cerebrospinal fluid*; D003704:Dementia / Q000134:cerebrospinal fluid*; D005260:Female; D006801:Humans; D006849:Hydrocephalus / Q000134:cerebrospinal fluid*; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000134:cerebrospinal fluid*; D010455:Peptides / Q000134:cerebrospinal fluid; D010750:Phosphoproteins / Q000134:cerebrospinal fluid*; D011863:Radioimmunoassay; D013373:Substance P / Q000134:cerebrospinal fluid
chemical_list: D010455:Peptides; D010750:Phosphoproteins; C029993:somatostatin-like peptides; D013373:Substance P; D003701:Delta Sleep-Inducing Peptide