Serum Protein Levels and Cognitive Impairment in Preeclampsia Patients

Published on March 28, 2023

Imagine your brain is like a puzzle, and this study is trying to find the missing pieces. Researchers investigated the relationship between cognitive impairment and serum phosphorylated tau181 (P-tau181) protein in patients with preeclampsia (PE). They compared the cognitive function, protein levels, and biomarker potential of PE patients, pregnant healthy controls, and non-pregnant healthy controls. The results showed that PE patients had lower scores on cognitive tests and higher levels of P-tau181 compared to the other groups. In fact, P-tau181 was better than total tau (T-tau) in predicting cognitive ability. These findings suggest that high levels of serum P-tau181 may serve as a non-invasive test for evaluating cognitive functional impairment in PE patients. So, think of P-tau181 as a detective looking for clues in your blood to solve the mystery of cognitive decline! To learn more about this insightful research, check out the full article!

ObjectiveTo study the cognitive function status, serum phosphorylated tau181 (P-tau181) protein level, and total tau (T-tau) protein level in patients with preeclampsia (PE), pregnant healthy controls (PHCs), and non-pregnant healthy controls (NPHCs), and to research their feasibility as serum biomarkers for evaluating cognitive functional impairment in PE patients.MethodsSixty-eight patients with PE, 48 NPHCs, and 30 PHCs were included. Cognitive functional status was assessed using standardized Symbol Digit Modalities Test (SDMT) and Montreal Cognitive Assessment (MoCA) scales. Enzyme-linked immunosorbent assay (ELISA) was used to detect the level of serum P-tau181 and T-tau protein. The concentration of serum P-tau181 and T-tau protein were compared by one-way analysis of variance in the three groups of subjects. The correlation between P-tau181, T-tau, and SDMT was explore by multiple linear regression analysis. The areas under the receiver operating characteristic (ROC) curves of serum P-tau181 and SDMT were calculated to predict the cognitive level of subjects.ResultsPE patients significantly had lower scores on SDMT (47.97 ± 7.54) and MoCA (28.00 ± 2.00) than normotensive PHCs (30.00 ± 1.25, 54.73 ± 8.55, respectively). The significant difference was found in serum P-tau181 protein levels among the three groups [H(K) = 19.101, P < 0.001]. Serum P-tau181 was thicker in PE patients than PHCs or NPHCs (both P < 0.05). According to the ROC curve, T-tau had no statistical significance in predicting the ability of cognizance, while P-tau181 and SDMT had. The DeLong test showed that P-tau181 was better than T-tau in predicting the ability of cognizance (P < 0.05).ConclusionThe patients with PE have occurred the decline of cognitive function during pregnancy. The high level of serum P-tau181 can be used as a clinical laboratory indication for non-invasive assessment of cognitive functional impairment in PE patients.

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