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45/100

✓ Peer-reviewed alzhub usefulness score 45 out of 100. Brain scans and imaging

Topic: Plasma and spinal-fluid biomarkers

Plain-language summary

Introduction Mild behavioral impairment (MBI) is characterized by the emergence of neuropsychiatric symptoms in elderly persons. Here, we examine the associations between MBI and Alzheimer's disease (AD) biomarkers in asymptomatic elderly individuals. Methods Ninety-six cognitively normal elderly individuals underwent MRI, [ 18 F]AZD4694 β-amyloid-PET, and [ 18 F]MK6240 tau-PET. MBI was assessed using the MBI Checklist (MBI-C). Pearson's correlations and voxel-based regressions were used to evaluate the relationship between MBI-C score and [ 18 F]AZD4694 retention, [ 18 F]MK6240 retention, and gray matter (GM) volume. Results Pearson correlations revealed a positive relationship between MBI-C score and global and striatal [ 18 F]AZD4694 standardized uptake value ratios (SUVRs). Voxel-based regression analyses revealed a positive correlation between MBI-C score and [ 18 F]AZD4694 retention. No significant correlations were found between MBI-C score and [ 18 F]MK6240 retention or GM volume. Conclusion We demonstrate for the first time a link between MBI and early AD pathology in a cognitively intact elderly population, supporting the use of the MBI-C as a metric to enhance clinical trial enrolment.

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APA 7th

Lussier, F. Z., Pascoal, T. A., Chamoun, M., Therriault, J., Tissot, C., Savard, M., et al. (2020). Mild behavioral impairment is associated with β-amyloid but not tau or neurodegeneration in cognitively intact elderly individuals. Alzheimer's & dementia : the journal of the Alzheimer's Association. https://doi.org/10.1002/alz.12007

Vancouver

Lussier FZ, Pascoal TA, Chamoun M, Therriault J, Tissot C, Savard M, et al. Mild behavioral impairment is associated with β-amyloid but not tau or neurodegeneration in cognitively intact elderly individuals. Alzheimer's & dementia : the journal of the Alzheimer's Association. 2020. doi:10.1002/alz.12007. PMID: 31914223.

BibTeX

@article{lussier2020-31914223,
  author  = {Lussier, F. Z. and Pascoal, T. A. and Chamoun, M. and Therriault, J. and Tissot, C. and Savard, M. and Kang, M. S. and Mathotaarachchi, S. and others},
  title   = {{Mild behavioral impairment is associated with β-amyloid but not tau or neurodegeneration in cognitively intact elderly individuals}},
  journal = {Alzheimer's \& dementia : the journal of the Alzheimer's Association},
  year    = {2020},
  doi     = {10.1002/alz.12007},
  pmid    = {31914223},
  url     = {https://doi.org/10.1002/alz.12007}
}

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How to read this study

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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 low. alzhub.org assigns the grade automatically from keywords in the abstract, not from reading the paper. Low means the abstract matched neither pattern. It is the default label, and it does not mean the work is poor; many sound lab and imaging papers land here. 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 Pearson correlations revealed a positive relationship between MBI-C score and global and striatal [ 18 F]AZD4694 standardized uptake value ratios (SUVRs).
Voxel-based regression analyses revealed a positive correlation between MBI-C score and [ 18 F]AZD4694 retention.
No significant correlations were found between MBI-C score and [ 18 F]MK6240 retention or GM volume.

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Study details

Evidence strengthLow

How this study scored 45/100

Published in a leading specialty journal. Scored zero for study design, sample size, effect reported, studied in people 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 26 of the 58 points we could judge it on, which is 45 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	2 / 5	2020 — within 10 year(s) of the newest study here
Sample size	0 / 4	Participant count not stated — scores zero (not stated in the record — scored 0)
Effect reported	0 / 3	No effect size reported — scores zero (not stated in the record — scored 0)
Studied in people	0 / 3	Not stated whether this was studied in people — scores zero (not stated in the record — scored 0)
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 31914223)
Free to read	2 / 2	Free to read
Points	26 / 58	Scored on 11 of 20 parts. We have no data for the rest, so they are left out: 26 of the 58 points we could judge it on is 45 out of 100.
Total	45 / 100	—

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