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72/100

✓ Peer-reviewed alzhub usefulness score 72 out of 100. Biomarkers

Topic: Amyloid, tau and blood-test diagnosis

Plain-language summary

Background Associations between longitudinal changes of plasma biomarkers and cerebral magnetic resonance (MR)-derived measurements in Alzheimer's disease (AD) remain unclear. Methods In a study population (n = 127) of healthy older adults and patients within the AD continuum, we examined associations between longitudinal plasma amyloid beta 42/40 ratio, tau phosphorylated at threonine 181 (p-tau181), glial fibrillary acidic protein (GFAP), neurofilament light chain (NfL), and 7T structural and functional MR imaging and spectroscopy using linear mixed models. Results Increases in both p-tau181 and GFAP showed the strongest associations to 7T MR-derived measurements, particularly with decreasing parietal cortical thickness, decreasing connectivity of the salience network, and increasing neuroinflammation as determined by MR spectroscopy (MRS) myo-inositol. Discussion Both plasma p-tau181 and GFAP appear to reflect disease progression, as indicated by 7T MR-derived brain changes which are not limited to areas known to be affected by tau pathology and neuroinflammation measured by MRS myo-inositol, respectively. Highlights This study leverages high-resolution 7T magnetic resonance (MR) imaging and MR spectroscopy (MRS) for Alzheimer's disease (AD) plasma biomarker insights. Tau phosphorylated at threonine 181 (p-tau181) and glial fibrillary acidic protein (GFAP) showed the largest changes over time, particularly in the AD group. p-tau181 and GFAP are robust in reflecting 7T MR-based changes in AD. The strongest associations were for frontal/parietal MR changes and MRS neuroinflammation.

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APA 7th

Göschel, L., Dell'Orco, A., Fillmer, A., Aydin, S., Ittermann, B., Riemann, L., et al. (2024). Plasma p-tau181 and GFAP reflect 7T MR-derived changes in Alzheimer's disease: A longitudinal study of structural and functional MRI and MRS. Alzheimer's & dementia : the journal of the Alzheimer's Association. https://doi.org/10.1002/alz.14318

Vancouver

Göschel L, Dell'Orco A, Fillmer A, Aydin S, Ittermann B, Riemann L, et al. Plasma p-tau181 and GFAP reflect 7T MR-derived changes in Alzheimer's disease: A longitudinal study of structural and functional MRI and MRS. Alzheimer's & dementia : the journal of the Alzheimer's Association. 2024. doi:10.1002/alz.14318. PMID: 39558898.

BibTeX

@article{goschel2024-39558898,
  author  = {Göschel, L. and Dell'Orco, A. and Fillmer, A. and Aydin, S. and Ittermann, B. and Riemann, L. and Lehmann, S. and Cano, S. and others},
  title   = {{Plasma p-tau181 and GFAP reflect 7T MR-derived changes in Alzheimer's disease: A longitudinal study of structural and functional MRI and MRS}},
  journal = {Alzheimer's \& dementia : the journal of the Alzheimer's Association},
  year    = {2024},
  doi     = {10.1002/alz.14318},
  pmid    = {39558898},
  url     = {https://doi.org/10.1002/alz.14318}
}

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How to read this study

Design: this is a follow-up (cohort) study. People are observed over time and not assigned to anything, so an association can reflect other differences between groups. Look at how long follow-up lasted, how many dropped out, and whether the authors adjusted for age, education and other health conditions.
Size: the record lists 127 participants. Ask whether that is enough for the question, and who they were.
Effect: the record gives no effect size, so the summary above cannot say how large any difference was.

What the evidence grade means here

This page is graded moderate. alzhub.org assigns the grade automatically from keywords in the abstract, not from reading the paper. Moderate means the abstract mentions a cohort, case-control or longitudinal design. It can add at most 5 of the 100 points in the study score, and it is a label about design, not a verdict on whether the findings are true.

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Key findings

Results Increases in both p-tau181 and GFAP showed the strongest associations to 7T MR-derived measurements, particularly with decreasing parietal cortical thickness, decreasing connectivity of the salience network, and increasing neuroinflammation as determined by MR spectroscopy (MRS) myo-inositol.

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Study details

Study designlongitudinal study
Participants127
Evidence strengthModerate

How this study scored 72/100

Published in a leading specialty journal, and it is a longitudinal study following the same people over time. Scored zero for 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 42 of the 58 points we could judge it on, which is 72 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	7 / 12	A longitudinal study following the same people over time
Strength of evidence	3 / 5	Rated “moderate” in our summary
Peer-review validation	10 / 10	Peer-reviewed. Published as an article in a named peer-reviewed journal.
How recent	4 / 5	2024 — within 3 year(s) of the newest study here
Sample size	2 / 4	127 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 39558898)
Free to read	2 / 2	Free to read
Points	42 / 58	Scored on 11 of 20 parts. We have no data for the rest, so they are left out: 42 of the 58 points we could judge it on is 72 out of 100.
Total	72 / 100	—

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