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Abstract Details

Association Between Cholesterol and Dementia with Lewy Bodies (DLB): A Systematic Review with Meta-analysis
Aging, Dementia, and Behavioral Neurology
P5 - Poster Session 5 (8:00 AM-9:00 AM)
3-019

To summarize the evidence on the association between cholesterol and the risk of DBL


Dementia with Lewy bodies (DLB), a synucleinopathy, is the second most common neurodegenerative dementia. Its pathophysiology is associated with altered cholesterol metabolism, which may impact alpha-synuclein aggregation.

A systematic search was conducted in PubMed, Embase, Scopus, Web of Knowledge, and Google Scholar until September 2024. We included observational studies that evaluated the association between cholesterol levels (total cholesterol, HDL-C, and LDL-C) and DLB. Additionally, we analyzed the difference in cholesterol levels between DLB and Alzheimer’s disease (AD) patients. A meta-analysis using a random-effects model to estimate pooled effects was used for each outcome and a narrative synthesis when this was not possible. Healthy controls and other dementias were the comparators, and the outcome was the risk of DLB.  The Newcastle-Ottawa scale was used to assess the risk of bias.


We included 9 studies (92747 patients). Cholesterol levels were lower in patients with DLB compared with patients with AD. (MD: -0.50; 2 studies; 142 participants; 95% CI: -0.82 to -0.18; I2 = 0%; low CoE). In addition, LDL-C levels increase the risk of presenting Lewy bodies (OR: 1.40; 2 studies; 82981 participants; 95% CI: 1.21 to 1.61; I2 = 0%; high CoE) and, on the contrary, HDL-C levels decrease the risk of presenting Lewy bodies (OR: 0.83; 2 studies; 84781 participants; 95% CI: 0.75 to 0.91; I2 = 0%; high CoE). All studies had a low risk of bias.


There was an association between lower cholesterol levels and DLB compared with AD patients. In addition, LDL-C levels increase the risk of DLB, while HDL-C has a protective effect. However, further studies are necessary to confirm these findings.


Authors/Disclosures
Claudia Cruzalegui Bazán
PRESENTER
Miss Cruzalegui Bazán has nothing to disclose.
Sandra D. Uriol Alvino Miss Uriol Alvino has nothing to disclose.
Gerardo M. Luna-Peralta Mr. Luna-Peralta has nothing to disclose.
Patricio Castro Suarez Mr. Castro Suarez has nothing to disclose.
Maria F. Valvas Acero, Student Miss Valvas Acero has nothing to disclose.
Guillermo Mantilla Dr. Mantilla has nothing to disclose.
Carlos Rodrigo Q. Vicuña Mr. Vicuña has nothing to disclose.