Home › Research › Biomarkers
C-terminal neurogranin is increased in cerebrospinal fluid but unchanged in plasma in Alzheimer's disease
De Vos A, Jacobs D, Struyfs H, Fransen E, Andersson K, Portelius E, Andreasson U, De Surgeloose D et al.. Alzheimer's & dementia : the journal of the Alzheimer's Association, 2015-06-16
Topic: Plasma and spinal-fluid biomarkers
Introduction Biomarkers monitoring synaptic degeneration/loss would be valuable for Alzheimer's disease (AD) diagnosis. Postsynaptic protein neurogranin may be a promising cerebrospinal fluid (CSF) biomarker but has not yet been evaluated as a plasma biomarker. Methods Using an in-house designed prototype enzyme-linked immunosorbent assay (ELISA) targeting neurogranin C-terminally, we studied neurogranin in paired CSF/plasma samples of controls (n = 29) versus patients experiencing MCI, or dementia, due to AD (in total n = 59). Results CSF neurogranin was increased in AD and positively correlated with CSF tau, whereas there was a negative relationship between CSF neurogranin (and tau) and CSF Aβ1-42/Aβ1-40. No differences were detected in plasma neurogranin between controls and AD. Also, there was no correlation between CSF and plasma neurogranin, excluding confounding effects of the latter. Discussion This study strengthens the potential of neurogranin as an AD CSF biomarker, which now needs validation in larger studies. As tools, straightforward immunoassays can be used, as demonstrated by the described ELISA.
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
APA 7th
De Vos, A., Jacobs, D., Struyfs, H., Fransen, E., Andersson, K., Portelius, E., et al. (2015). C-terminal neurogranin is increased in cerebrospinal fluid but unchanged in plasma in Alzheimer's disease. Alzheimer's & dementia : the journal of the Alzheimer's Association. https://doi.org/10.1016/j.jalz.2015.05.012
Vancouver
De Vos A, Jacobs D, Struyfs H, Fransen E, Andersson K, Portelius E, et al. C-terminal neurogranin is increased in cerebrospinal fluid but unchanged in plasma in Alzheimer's disease. Alzheimer's & dementia : the journal of the Alzheimer's Association. 2015. doi:10.1016/j.jalz.2015.05.012. PMID: 26092348.
BibTeX
@article{devos2015-26092348,
author = {De Vos, A. and Jacobs, D. and Struyfs, H. and Fransen, E. and Andersson, K. and Portelius, E. and Andreasson, U. and De Surgeloose, D. and others},
title = {{C-terminal neurogranin is increased in cerebrospinal fluid but unchanged in plasma in Alzheimer's disease}},
journal = {Alzheimer's \& dementia : the journal of the Alzheimer's Association},
year = {2015},
doi = {10.1016/j.jalz.2015.05.012},
pmid = {26092348},
url = {https://doi.org/10.1016/j.jalz.2015.05.012}
}
Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. The record's author list ends in “et al.”, so not every author is named. Check the citation against the original before you use it.
Key findings
- Methods Using an in-house designed prototype enzyme-linked immunosorbent assay (ELISA) targeting neurogranin C-terminally, we studied neurogranin in paired CSF/plasma samples of controls (n = 29) versus patients experiencing MCI, or dementia, due to AD (in total n = 59).
- Results CSF neurogranin was increased in AD and positively correlated with CSF tau, whereas there was a negative relationship between CSF neurogranin (and tau) and CSF Aβ1-42/Aβ1-40.
- As tools, straightforward immunoassays can be used, as demonstrated by the described ELISA.
New to this subject? Start with our plain-English guide: Blood tests & biomarkers →
Study details
- Participants29
- Evidence strengthLow
How this study scored 47/100
Published in a leading specialty journal. Scored zero for study design, effect reported and randomized / blinded because the record does not state it. We have no data on journal's citation record, times cited, citations per year, impact for its field and year, cited by studies here, still being cited, senior author's track record, institution's track record and multicenter collaboration, so those were left out: it earned 27 of the 58 points we could judge it on, which is 47 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 9 / 10 | Tier 2 — leading specialty journal (Alzheimer's & dementia : the journal of the Alzheimer's Association) |
| Journal's citation record | — / 4 | No journal record from OpenAlex — left out of this score |
| Study design | 0 / 12 | No study design recorded — scores zero, not guessed (not stated in the record — scored 0) |
| Strength of evidence | 1 / 5 | Rated “low” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 1 / 5 | 2015 — within 20 year(s) of the newest study here |
| Sample size | 1 / 4 | 29 participants |
| Effect reported | 0 / 3 | No effect size reported — scores zero (not stated in the record — scored 0) |
| Studied in people | 3 / 3 | Studied in people (participant count stated) |
| Randomized / blinded | 0 / 2 | No randomization or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | — / 7 | No citation count (not found in OpenAlex) — left out of this score |
| Citations per year | — / 5 | No citation count or no year — left out of this score |
| Impact for its field and year | — / 6 | No field-weighted citation impact (OpenAlex has none yet) — left out of this score |
| Cited by studies here | — / 6 | Not yet checked against this library's citation graph — left out of this score |
| Still being cited | — / 4 | No yearly citation counts — left out of this score |
| Senior author's track record | — / 4 | Senior author's record not available — left out of this score |
| Institution's track record | — / 3 | No institution listed in OpenAlex — left out of this score |
| Multicenter collaboration | — / 3 | Institutions not listed — left out of this score |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 26092348) |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Points | 27 / 58 | Scored on 11 of 20 parts. We have no data for the rest, so they are left out: 27 of the 58 points we could judge it on is 47 out of 100. |
| Total | 47 / 100 | — |
What each of these 20 components measures, and what this score is not →
Read the original
Free copy unknown: no free-copy check has an answer for this record yet. That does not mean it is paywalled.
Related
Studies in the library that share something with this one. The line above each title says what.
Related studies in Biomarkers
Also tagged “p-tau217”
692 studies in the library carry the topic tag “p-tau217”; these are this study's neighbours in a fixed, alphabetical-by-hash tour of them, not the closest in content. All 692 tagged studies.