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Specific Cerebrospinal Fluid SerpinA1 Isoform Pattern in Alzheimer's Disease
Lorenzo Barba, Steffen Halbgebauer, Federico Paolini Paoletti, Giovanni Bellomo, Samir Abu-Rumeileh, Petra Steinacker, Federico Massa, Lucilla Parnetti et al.. International journal of molecular sciences, 2022-06-22
Topic: Plasma and spinal-fluid biomarkers
SerpinA1 (α1-antitrypsin) is a soluble glycoprotein, the cerebrospinal fluid (CSF) isoforms of which showed disease-specific changes in neurodegenerative disorders that are still unexplored in Alz-heimer’s disease (AD). By means of capillary isoelectric focusing immunoassay, we investigated six serpinA1 isoforms in CSF samples of controls (n = 29), AD-MCI (n = 29), AD-dem (n = 26) and Lewy body disease (LBD, n = 59) patients and correlated the findings with CSF AD core biomarkers (Aβ42/40 ratio, p-tau, t-tau). Four CSF serpinA1 isoforms were differently expressed in AD patients compared to controls and LBD patients, especially isoforms 2 and 4. AD-specific changes were found since the MCI stage and significantly correlated with decreased Aβ42/40 (p < 0.05) and in-creased p-tau and t-tau levels in CSF (p < 0.001). Analysis of serpinA1 isoform provided good di-agnostic accuracy in discriminating AD patients versus controls (AUC = 0.80) and versus LBD patients (AUC = 0.92), with best results in patients in the dementia stage (AUC = 0.97). SerpinA1 isoform expression is altered in AD patients, suggesting a common, albeit disease-specific, in-volvement of serpinA1 in most neurodegenerative disorders.
Key findings
- Four CSF serpinA1 isoforms were differently expressed in AD patients compared to controls and LBD patients, especially isoforms 2 and 4.
- AD-specific changes were found since the MCI stage and significantly correlated with decreased Aβ42/40 (p < 0.05) and in-creased p-tau and t-tau levels in CSF (p < 0.001).
- Analysis of serpinA1 isoform provided good di-agnostic accuracy in discriminating AD patients versus controls (AUC = 0.80) and versus LBD patients (AUC = 0.92), with best results in patients in the dementia stage (AUC = 0.97).
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Study details
- Participants29
- Effect sizeAUC = 0.80; AUC = 0.92; AUC = 0.97
- Evidence strengthLow
How this study scored 54/100
Published in a peer-reviewed journal. Scored zero for study design and randomised / 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, multi-centre collaboration and free to read, so those were left out: it earned 30 of the 56 points we could judge it on, which is 54 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (International journal of molecular sciences) |
| 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 | 3 / 5 | 2022 — within 6 year(s) of the newest study here |
| Sample size | 1 / 4 | 29 participants |
| Effect reported | 3 / 3 | Effect reported with a statistic (interval, p-value, ratio or similar) |
| Studied in people | 3 / 3 | Studied in people (participant count stated) |
| Randomised / blinded | 0 / 2 | No randomisation 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 |
| Multi-centre collaboration | — / 3 | Institutions not listed — left out of this score |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 35805926) |
| Free to read | — / 2 | Access not recorded — left out of this score |
| Points | 30 / 56 | Scored on 10 of 20 parts. We have no data for the rest, so they are left out: 30 of the 56 points we could judge it on is 54 out of 100. |
| Total | 54 / 100 | — |
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Cite this study APA, Vancouver, BibTeX · download .bib or .ris
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.
APA 7th
Barba, L., Halbgebauer, S., Paoletti, F. P., Bellomo, G., Abu-Rumeileh, S., Steinacker, P., et al. (2022). Specific Cerebrospinal Fluid SerpinA1 Isoform Pattern in Alzheimer's Disease. International journal of molecular sciences. https://doi.org/10.3390/ijms23136922
Vancouver
Barba L, Halbgebauer S, Paoletti FP, Bellomo G, Abu-Rumeileh S, Steinacker P, et al. Specific Cerebrospinal Fluid SerpinA1 Isoform Pattern in Alzheimer's Disease. International journal of molecular sciences. 2022. doi:10.3390/ijms23136922. PMID: 35805926.
BibTeX
@article{barba2022-35805926,
author = {Barba, Lorenzo and Halbgebauer, Steffen and Paoletti, Federico Paolini and Bellomo, Giovanni and Abu-Rumeileh, Samir and Steinacker, Petra and Massa, Federico and Parnetti, Lucilla and others},
title = {{Specific Cerebrospinal Fluid SerpinA1 Isoform Pattern in Alzheimer's Disease}},
journal = {International journal of molecular sciences},
year = {2022},
doi = {10.3390/ijms23136922},
pmid = {35805926},
url = {https://doi.org/10.3390/ijms23136922}
}
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