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Cerebrovascular and brain morphologic correlates of mild cognitive impairment in the National Heart, Lung, and Blood Institute Twin Study
DeCarli C, Miller BL, Swan GE, Reed T, Wolf PA, Carmelli D.. Archives of neurology, 2001-04-01
Topic: Risk, prevention and care in population studies
Objective To evaluate the relative risk (RR) of mild cognitive impairment (MCI) associated with cerebrovascular risk factors and cerebrovascular-related brain changes. Design Mild cognitive impairment was determined for the subjects of the prospective National Heart, Lung, and Blood Institute Twin Study. Quantitative measures of brain, white matter hyperintensity, cerebral infarction, apolipoprotein E genotype, and psychometric testing were obtained. Results Subjects with MCI were older (73.5 +/- 3.0 vs 72.1 +/- 2.8 years), consumed less alcohol (3.7 +/- 5.8 vs 7.0 +/- 10.7 drinks per week), had greater white matter hyperintensity volumes (0.56% +/- 0.82% vs 0.25% +/- 0.34% of cranial volume), and had an increased prevalence of apolipoprotein E4 genotype (31.4% vs 19.2%) than normal subjects. White matter hyperintensity and the presence of the apolipoprotein E4 genotype were associated with a significantly increased risk for MCI. When all subjects were included in the analysis, alcohol consumption was associated with a reduced risk for MCI (RR = 0.93, P<.05). When subjects with a history of symptomatic cerebrovascular disease were excluded from the analysis, elevated midlife diastolic blood pressure was associated with an increased risk for MCI (RR = 1.70, P<.05). Conclusions Elevated midlife blood pressures, and the resulting increased white matter hyperintensities, increase the risk for MCI in a group of community-dwelling older men to at least the same degree as apolipoprotein E4 genotype. Given the common occurrence of elevations in midlife blood pressure, early and effective treatment may be warranted to prevent late-life brain abnormalities and MCI. Moreover, since many individuals with MCI progress to clinical dementia, longitudinal evaluations of this cohort will be important.
Key findings
- Objective To evaluate the relative risk (RR) of mild cognitive impairment (MCI) associated with cerebrovascular risk factors and cerebrovascular-related brain changes.
- Results Subjects with MCI were older (73.5 +/- 3.0 vs 72.1 +/- 2.8 years), consumed less alcohol (3.7 +/- 5.8 vs 7.0 +/- 10.7 drinks per week), had greater white matter hyperintensity volumes (0.56% +/- 0.82% vs 0.25% +/- 0.34% of cranial volume), and had an increased prevalence of apolipoprotein E4 genotype (31.4% vs 19.2%) than normal subjects.
- White matter hyperintensity and the presence of the apolipoprotein E4 genotype were associated with a significantly increased risk for MCI.
- When all subjects were included in the analysis, alcohol consumption was associated with a reduced risk for MCI (RR = 0.93, P<.05).
- When subjects with a history of symptomatic cerebrovascular disease were excluded from the analysis, elevated midlife diastolic blood pressure was associated with an increased risk for MCI (RR = 1.70, P<.05).
Study details
- Study designlongitudinal study
- Effect size0.56%; 0.82%; 0.25%
- Evidence strengthModerate
How this study scored 60/100
Published in a peer-reviewed journal, and it is a longitudinal study following the same people over time. Scored zero for sample size 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 and multi-centre collaboration, so those were left out: it earned 35 of the 58 points we could judge it on, which is 60 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (Archives of neurology) |
| 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 | 1 / 5 | 2001 — older than 20 years, still counted |
| Sample size | 0 / 4 | Participant count not stated — scores zero (not stated in the record — scored 0) |
| Effect reported | 2 / 3 | Effect reported as a number, without an interval or test |
| Studied in people | 3 / 3 | Studied in people (pubmed indexes it as a clinical or observational study) |
| 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 11295996) |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Points | 35 / 58 | Scored on 11 of 20 parts. We have no data for the rest, so they are left out: 35 of the 58 points we could judge it on is 60 out of 100. |
| Total | 60 / 100 | — |
What each of these 20 components measures, and what this score is not →
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Cite this study APA, Vancouver, BibTeX · download .bib or .ris
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APA 7th
DeCarli, C., Miller, B. L., Swan, G. E., Reed, T., Wolf, P. A., & Carmelli, D. (2001). Cerebrovascular and brain morphologic correlates of mild cognitive impairment in the National Heart, Lung, and Blood Institute Twin Study. Archives of neurology. https://doi.org/10.1001/archneur.58.4.643
Vancouver
DeCarli C, Miller BL, Swan GE, Reed T, Wolf PA, Carmelli D. Cerebrovascular and brain morphologic correlates of mild cognitive impairment in the National Heart, Lung, and Blood Institute Twin Study. Archives of neurology. 2001. doi:10.1001/archneur.58.4.643. PMID: 11295996.
BibTeX
@article{decarli2001-11295996,
author = {DeCarli, C. and Miller, B. L. and Swan, G. E. and Reed, T. and Wolf, P. A. and Carmelli, D.},
title = {{Cerebrovascular and brain morphologic correlates of mild cognitive impairment in the National Heart, Lung, and Blood Institute Twin Study}},
journal = {Archives of neurology},
year = {2001},
doi = {10.1001/archneur.58.4.643},
pmid = {11295996},
url = {https://doi.org/10.1001/archneur.58.4.643}
}
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