Cited by 79Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuropeptides and Animal Physiology

Processing of neuropeptide Y, galanin, and somatostatin in the cerebrospinal fluid of patients with Alzheimer’s disease and frontotemporal dementia

Nilsson, Carol L, Brinkmalm, Ann, Minthon, Lennart, Blennow, Kaj, Ekman, Rolf·2001·Peptides

Abstract

Alzheimer's disease (AD) and frontotemporal dementia (FTD) are two prevalent neurodegenerative disorders for which the causes are unknown, except in rare familial cases. Several changes in neuropeptide levels as measured by radioimmunoassay (RIA) have been observed in these illnesses. Somatostatin (SOM) levels in cerebrospinal fluid (CSF) are consistently decreased in AD and FTD. Neuropeptide Y (NPY) levels are decreased in AD, but normal in FTD. Galanin (GAL) levels increase with the duration of illness in AD patients. The majority of studies of neuropeptides in CSF have not been verified by HPLC. The observed decrease in a neuropeptide level as measured by RIA may therefore reflect an altered synthesis or extracellular processing, resulting in neuropeptide fragments that may or may not be detected by RIA. Matrix-assisted laser desorption time-of-flight mass spectrometry (MALDI-MS) has been shown to be a powerful technique in the analysis of biological materials without any pre-treatment, by detecting peptides and proteins at a specific mass-to-charge (m/z) ratio. We studied the processing of the neuropeptides NPY, NPY, SOM and GAL in the cerebrospinal fluid of patients with AD (n = 3), FTD (n = 3) and controls (n = 2) using MALDI-MS. We found that considerable inter-individual variability exists in the rate of neuropeptide metabolism in CSF, as well as the number of peptide fragments formed. Certain patients showed differences in the processing of specific neuropeptides, relative to other patients and controls. This analysis of the metabolic processing of neuropeptides in CSF yielded a large amount of data for each individual studied. Further studies are required to determine the changes in neuropeptide processing that can be associated with AD and FTD. With further investigations using MALDI-MS analysis, it may be possible to identify a neuropeptide fragment or processing enzyme that can be correlated to these disease states.

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Crossref · 10.1016/s0196-9781(01)00571-x

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  • SST levels are persistently reduced in the brain and cerebrospinal fluid of AD patients.

    “Research has also shown a persistent reduction in SST levels in the brain and cerebrospinal fluid of AD patients (Bissette et al. 1998;Nilsson et al. 2001)”

    From Changes of the Primary Cilia in Alzheimer's Disease Pathogenesis (2025) · cites this paper as Nilsson et al. 2001

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Authors
Nilsson, C. L., Brinkmalm, A., Minthon, L., Blennow, K., & Ekman, R.
Affiliations
Sahlgrenska University Hospital (SE)
Corresponding author
Nilsson, Carol L
Venue
Peptides
Publisher
Elsevier BV
Published
2001-12
Volume
22
Issue
12
Pages
2105-2112
ISSN
0196-9781 (ISSN-L)
OpenAlex
W2074143348
Cited by
79
References
46
Citations by year
2026: 3 · 2025: 3 · 2024: 8 · 2023: 2 · 2022: 6 · 2021: 2 · 2020: 1 · 2018: 5 · 2017: 3 · 2016: 3 · 2015: 3 · 2014: 4 · 2013: 2 · 2012: 6
FWCI
1.18
Type
journal article
Language
en
Open access
closed
Locations
  • Peptides (publishedVersion)
  • PubMed (publishedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
Funders
  • Stiftelsen Lars Hiertas Minne
  • Medicinska Forskningsrådet (07517,12103)
  • Svenska Sällskapet för Medicinsk Forskning
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
neuropeptide Y, galanin, somatostatin, cerebrospinal fluid, Alzheimer's disease, frontotemporal dementia, neuropeptide processing, MALDI-MS, neurodegenerative diseases, biomarkers
MeSH terms
Alzheimer Disease, Dementia, Female, Humans, Male, Middle Aged, Neuropeptide Y, Somatostatin, Case-Control Studies, Galanin, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization

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