High beta-amyloid(1-40) cerebrospinal fluid concentrations precede increase of serum biomarkers in a case with severe HELLP syndrome.

Beta-amyloid peptides and tau protein concentrations were analysed at second and third trimester pregnancy in cerebrospinal fluid in a 27-year old woman who developed severe HELLP (Hemolysis, Elevated Liver enzymes and Low Platelets) syndrome. Contrary to a healthy pregnant control the beta-amyloid(1-40) load was much higher and the ratios beta-amyloid peptides(1-42/1-40) and phospho-tau/tau had increased before delivery. We observed that in early HELLP syndrome increased beta-amyloid levels preceded vascular biomarker changes. We conclude that high levels of beta-amyloid(1-40) in the second trimester of pregnancy might reflect pathologic maternal brain changes that go along with pathological changes in the materno-feto-placental unit.