Screening models combining maternal characteristics and multiple markers for the early prediction of preeclampsia in pregnancy: a nested case-control study.

To identify maternal laboratory markers to predict the risk of preeclampsia (PE) in different stages of pregnancy, we analysed 67, 25, and 73, pregnancies developing PE at 11-13, 16-20, and 24-28 wks, respectively. Routine laboratory markers were measured in whole blood or serum and binary logistic regression analysis was used to identify predictive models. At 11-13 wks of gestation, patients who went on to develop PE showed significantly higher concentrations of alanine aminotransferase, aspartate aminotransferase, α-L-fucosidase, 5'-nucleotidase, glutamyl transpeptidase, cholinesterase, and uric acid; plateletcrit was also higher. At 16-20 wks, inhibin A concentration and plateletcrit were significantly elevated. At 24-28 wks, platelets, plateletcrit, and glucose concentration were significantly elevated. Logistic regression analysis showed that an elevation in 5'-nucleotidase was independently associated with PE at 11-13 wks. The combination of inhibin A, diastolic blood pressure, and body mass index was a significant predictor for PE at 16-20 wks, while the combination of glucose and systolic blood pressure was a significant predictor for PE at 24-28 wks. In conclusion, when combined with maternal characteristics, the measurement of 5'-nucleotidase, inhibin A, and glucose levels, represents a potentially valuable risk assessment for PE.Impact statementWhat is already known on this subject? Preeclampsia (PE) may be viewed as a spectrum of disorders with a severity that is reflected in the levels of specific biomarkers. Consequently, there is a clear need for additional biomarkers that can be used to stratify pregnancies as high or low risk soon after conception.What do the results of this study add? At 11-13 wks of gestation, maternal assays for platelets, plateletcrit, alanine aminotransferase, aspartate aminotransferase, α-L-fucosidase, 5'-nucleotidase, glutamyl transpeptidase, cholinesterase, and uric acid, demonstrated significantly higher values in patients with PE when compared with normal controls. Furthermore, assay results for inhibin A and platelets showed increased values at 16-20 wks of gestation. Assays performed at 24-28 wks of gestation revealed elevated levels of platelets, plateletcrit, and glucose. Our analysis indicated that increases in the levels of 5'-nucleotidase, inhibin A, and glucose, are effective and significant biomarkers that could be used in combination with maternal characteristics to screen for PE at 11-13, 16-20, and 24-28 wks of gestation, respectively. These findings provide a new basis for our understanding of the aetiology underlying PE.What are the implications of these findings for clinical practice and/or further research? Further studies that consider the entire population are now needed and should include the investigation of laboratory markers across different stages of pregnancy. Long-term follow up would also be necessary if we are to explore the full role of laboratory markers in the pathophysiology of PE.

3-(4-Hy-droxy-phen-yl)-7-meth-oxy-chroman-4-one monohydrate.

In the title compound, C(16)H(14)O(4)·H(2)O, the dihedral angle betwen the benzene rings is 71.4 (6)°. The pyran ring is in a sofa conformation. In the crystal, O-H⋯O hydrogen bonds connect the components into a two-dimensional network parallel to (010), incorporating C(2) (2)(4) and C(2) (2)(11) chains. In addition, weak C-H⋯O, C-H⋯π and π-π stacking inter-actions [centroid-centroid distance = 3.768 (2) Å] are present.

Effect of CXCL12/CXCR4 on migration of decidua-derived mesenchymal stem cells from pregnancies with preeclampsia.

PROBLEM: Systemic immuno-inflammatory response caused by maternal immune imbalance is central to the pathogenesis of preeclampsia (PE). We hypothesized that changes in the number of decidual mesenchymal stem cells (dMSCs) may be associated with maternal immune imbalance. We aimed to evaluate the expression of CXCL12/CXCR4 axis in patients with PE and its influence on the migration behavior of dMSCs, to further clarify the pathogenesis of PE. METHOD OF STUDY: Fourteen women with PE and 11 controls were included. DMSCs were extracted from decidual tissue by type II collagenase digestion and adherence. ELISA and immunohistochemistry analysis were used to measure serum and tissue levels of CXCL12. Q-PCR and Western blotting were used to detect CXCR4 expression on dMSCs, whereas transwell assay was used to measure the migration ability of dMSCs. RESULTS: Decidual mesenchymal stem cells from women with PE showed higher expressions of CXCR4 and HIF-1α than the dMSCs of controls did. Tissues from women with PE showed the highest CXCL12 levels in the decidua, followed by the placenta and umbilical cord, whereas tissues from controls showed the highest CXCL2 levels in the umbilical cord, followed by the placenta and decidua. dMSCs from women with PE showed possibly higher migration ability than that of dMSCs from controls, under the induction of CXCL12, whereas dMSCs showed a decreasing trend in hypoxic than in normoxic environment. CONCLUSION: Decidual mesenchymal stem cells from women with PE can migrate to the decidua layer with the concentration gradient of CXCL12, which may play a role in the occurrence and development of PE.