Details

Autor(en) / Beteiligte

• Li, Ge
• Mayer, Cynthia L
• Morelli, Daniel
• Millard, Steven P
• Raskind, Wendy H
• Petrie, Eric C
• Cherrier, Monique
• Fagan, Anne M
• Raskind, Murray A
• Peskind, Elaine R

Titel

Effect of simvastatin on CSF Alzheimer disease biomarkers in cognitively normal adults

Ist Teil von

• Neurology, 2017-09, Vol.89 (12), p.1251-1255

Ort / Verlag

United States

Erscheinungsjahr

2017

Quelle

MEDLINE

Beschreibungen/Notizen

• To examine potential disease-modifying effects of statin drugs, we conducted a 12-month randomized, placebo-controlled clinical trial of simvastatin in cognitively normal adults using change in CSF Alzheimer disease biomarkers as primary outcome measure. Participants were 45-64 years old and statin-naive with normal cognition and normal or mildly elevated cholesterol. Forty-six participants completed the 1-year study per protocol (25 in the simvastatin and 21 in the placebo group). Simvastatin was titrated to 40 mg/d. CSF Aβ , total tau, and p-tau were measured at baseline and after 12 months of treatment using the INNO-BIA AlzBio3 assay. We used analysis of covariance to assess differences in biomarker change from baseline between treatment groups, adjusting for age, sex, and ε4 status. Changes from baseline did not differ significantly between treatment groups for any CSF biomarker, with values of 0.53, 0.36, and 0.25 for CSF Aβ , total tau, and p-tau , respectively. There was no significant modifying effect of sex, ε4, or baseline high-density lipoprotein or triglycerides on treatment group for any of the biomarkers (all > 0.18). However, a significant interaction between treatment group and baseline low-density lipoprotein (LDL) was observed for p-tau ( = 0.003), where greater decreases from baseline in CSF p-tau concentrations were associated with higher baseline LDL level for the simvastatin group. Simvastatin-related reductions in CSF p-tau concentrations may be modulated by LDL cholesterol. The potential disease-modifying effects of simvastatin on CSF phospho-tau should be further investigated in persons with hypercholesterolemia.