Insulin Resistance is Associated with Increased Levels of Cerebrospinal Fluid Biomarkers of Alzheimer's Disease and Reduced Memory Function in At-Risk Healthy Middle-Aged Adults

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Insulin Resistance is Associated with Increased Levels of Cerebrospinal Fluid Biomarkers of Alzheimer's Disease and Reduced Memory Function in At-Risk Healthy Middle-Aged Adults

Hoscheidt, S. M. (author)

Starks, E. J. (author)

Oh, J. M. (author)

Zetterberg, Henrik, 1973 (author): Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för psykiatri och neurokemi,Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry

Blennow, Kaj, 1958 (author): Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för psykiatri och neurokemi,Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry

Krause, R. A. (author)

Gleason, C. E. (author)

Puglielli, L. (author)

Atwood, C. S. (author)

Carlsson, C. M. (author)

Asthana, S. (author)

Johnson, S. C. (author)

Bendlin, B. B. (author)

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2016
2016
English.
In: Journal of Alzheimers Disease. - 1387-2877. ; 52:4, s. 1373-1383

Related links:: https://gup.ub.gu.se...; show more...; https://doi.org/10.3...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

Background: Type 2 diabetes is associated with an increased risk for Alzheimer's disease (AD). Regulation of normal insulin function may be important in reducing the prevalence of dementia due to AD, particularly in individuals who harbor genetic risk for or have a parental family history of AD. The relationship between insulin resistance (IR) and AD pathology remains poorly understood, particularly in midlife prior to the onset of clinical metabolic disease or cognitive decline. Objective: We examined associations between IR as indexed by HOMA-IR, cerebrospinal fluid (CSF) biomarkers of AD pathology, and memory in middle-aged adults enriched for AD. We postulated that higher HOMA-IR and APOE epsilon 4 carriage would be associated with greater CSF AD pathology and poor memory performance. Methods: Cognitively asymptomatic middle-aged adults (N = 70, mean age = 57.7 years) from the Wisconsin Alzheimer's Disease Research Center with a parental family history of dementia due to AD underwent lumbar puncture, blood draw, and neuropsychological testing. CSF AD biomarkers including soluble amyloid-beta protein precursor beta (sA beta PP beta), amyloid-beta 42 (A beta(42)), and phosphorylated tau (P-tau(181)) were examined with respect to HOMA-IR and APOE epsilon 4 status. Delayed memory performance was examined with respect to HOMA-IR, CSF AD biomarkers, and APOE epsilon 4 status. Results: Higher HOMA-IR was associated with higher sA beta PP beta and A beta(42). APOE epsilon 4 carriers had significantly higher levels of sA beta PP beta, sA beta PP beta, and P-tau(181)/A beta(42) compared to noncarriers. The concurrent presence of higher HOMA-IR and CSF AD pathology predicted worse delayed memory performance. Conclusion: Overall, the findings suggest that IR and APOE epsilon 4 are contributing factors to the development of AD pathology in midlife, and provide support for targeting insulin function as a potentially modifiable risk factor for AD.

Subject headings

MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Clinical Medicine (hsv//eng)

Keyword

APOE epsilon 4
CSF AD biomarkers
insulin resistance
memory function
amyloid precursor protein
mild cognitive impairment
apolipoprotein-e
genotype
central-nervous-system
late-onset alzheimers
gray-matter
volume
synaptic plasticity
family-history
diabetes-mellitus
degrading enzyme
Neurosciences & Neurology

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ref (subject category)
art (subject category)

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By the author/editor: Hoscheidt, S. M.; Starks, E. J.; Oh, J. M.; Zetterberg, Henr ...; Blennow, Kaj, 19 ...; Krause, R. A.; show more...; Gleason, C. E.; Puglielli, L.; Atwood, C. S.; Carlsson, C. M.; Asthana, S.; Johnson, S. C.; Bendlin, B. B.; show less...

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MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...

Articles in the publication: Journal of Alzhe ...

By the university: University of Gothenburg

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