1,721,015 research outputs found
Do patients with a history of pre-eclampsia have elevated levels of coagulation and angiogenic markers postpartum?
No full textBackground: Pre-eclampsia (P-EC) is a pregnancy-specific disorder, characterised by placental insufficiency and endothelial dysfunction. It is a significant cause of maternal and fetal morbidity. Women with a history of P-EC have heightened risks of future cardiovascular and thromboembolic disease. In addition, pre-eclamptic patients have elevated levels of clotting and angiogenic factors; however it is unclear whether these changes persist postpartum. Aims: The aim of this study was to investigate the relationship between haemostatic as well as angiogenic and anti-angiogenic factors in women with a past-history of P-EC, including vascular endothelial growth factor (VEGF), placental growth factor (PlGF), soluble fms-like tyrosine kinase-1 (sFlt-1) and soluble endoglin (sEng), in combination with tissue factor (TF) and TF pathway inhibitor (TFPI), also whether these factors were altered postpartum in women with a history of P-EC. Methods: The study followed a case-control design. Blood samples were obtained at 6-12 months postpartum from 21 primiparous women after a pregnancy affected by P-EC, and 21 women with a previously unaffected pregnancy. Plasma concentrations of each of the factors were determined using enzyme-linked immunosorbent assay. Results: Significant differences were not observed in levels of VEGF (p=0.068), PlGF (p=0.333), sFlt-1 (p=0.910), sEng (p=0.612), TF (p=0.260) or TFPI (p=0.786) between women with and without a history of pre-eclampsia. Additionally, no significant difference was found in the TF: TFPI ratio between case and control groups (p=0.734). Conclusion: This study does not support the hypothesis that levels of VEGF, PlGF, sFlt-1, sEng, TF or TFPI are altered in women with a history of P-EC compared to controls. However, we observed a weak positive association between all parameters measured. While we acknowledge that this is a pilot study and that the sample sizes is relatively small, our results suggest that circulating haemostatic, angiogenic and anti-angiogenic factors are not significantly altered in women with a past-history of P-E
Inflammatory and haemostatic changes following pre-eclampsia: potential link with development of subsequent cardiovascular events?
No full textPre-eclampsia (P-EC) is a major cause of maternal and neonatal mortality and morbidity. Despite intensive
research, its aetiology remains poorly understood. However, underlying maternal cardiovascular risk factors are
thought to be implicated. Changes in the maternal vasculature and coagulation profile may predispose women
with P-EC to subsequent adverse cardiovascular consequences. Here we investigate the relationship between
circulating levels of haemostatic factors and inflammatory cytokines in women with a previous history of P-EC.
The participents included 26 women who had had P-EC within the last three years and were more than 6 months
postpartum and 14 age-matched healthy women with no past history of P-EC. Blood was collected and assayed for
plasma IL-6, IL-8, TNF-α and IL-10, Tissue Factor (TF) and TF-Pathway Inhibitor (TFPI), using Enzyme-Linked
Immunosorbent Assays.
Individually, plasma TF, IL-6, IL-8 and IL-10 levels increased in the P-EC group compared with their normal
counterparts, whereas plasma TFPI and TNF-α level were reduced. Plasma TF/TFPI ratios and IL-10 values
were significantly increased in the P-EC group compared with controls (p<0.05, p<0.01, respectively). There were
positive and significant correlations between TFPI and IL-10 (r= 0.5; p<0.01) and TF/TFPI ratio and IL-10 (r=
0.31; p<0.041), and between IL-6 and TNF-α (r=0.71; p<0.001) and IL-6 and IL-10 (r=0.42; p<0.01).
In conclusion, our results suggest the presence of elevated inflammatory cytokines and an imbalance of the
haemostatic system in women with a past-history of P-EC, which may contribute to the known increased risk of
cardiovascular disease in these women later in life
Increased plasma CD14 levels 1 year postpartum in women with pre-eclampsia during pregnancy: a case–control plasma proteomics study
Full text linkEpidemiological data suggest that pre-eclampsia (PE) is associated with an increased risk of post-delivery metabolic dysregulation. The aim of the present case–control observational study was to examine the global plasma proteomic profile 1 year postpartum in women who developed PE during pregnancy (n = 5) compared to controls (n = 5), in order to identify a novel predictive marker linking PE with long-term metabolic imbalance. Key findings were verified with enzyme-linked immunosorbent assay (ELISA) in a separate cohort (n = 17 women with PE and n = 43 controls). One hundred and seventy-two proteins were differentially expressed in the PE vs. control groups. Gene ontology analysis showed that Inflammatory|Immune responses, Blood coagulation and Metabolism were significantly enriched terms. CD14, mapping to the inflammatory response protein network, was selected for verification based on bibliographic evidence. ELISA measurements showed CD14 to be significantly increased 1 year postpartum in women with PE during pregnancy compared to controls [PE group (median ± SD): 296.5 ± 113.6; control group (median ± SD): 128.9 ± 98.5; Mann–Whitney U test p = 0.0078]. Overall, the identified proteins could provide insight into the long-term disease risk among women with PE during pregnancy and highlight the need for their postpartum monitoring. CD14 could be examined in larger cohorts as a predictive marker of insulin resistance and type II diabetes mellitus among women with PE
Evaluation of 7 serum biomarkers and uterine artery Doppler ultrasound for first-trimester prediction of preeclampsia: a systematic review
No full textPreeclampsia (PE) affects 1% to 2% of pregnant women and is a leading cause of maternal and perinatal morbidity and mortality worldwide. The clinical syndrome of PE arises in the second half of pregnancy. However, many underlying factors including defective placentation may already be apparent in the first and early second trimester in many patients. In clinical practice, there is currently no reliable screening method in the first trimester of pregnancy with sufficient accuracy to identify women at high risk to develop PE. Early identification of high-risk pregnancy may facilitate the development of new strategies for antenatal surveillance or prevention and thus improve maternal and perinatal outcome. The aim of this systematic review was to study the literature on the predictive potential of first-trimester serum markers and of uterine artery Doppler velocity waveform assessment (Ut-A Doppler). Literature on the 7 most studied serum markers (ADAM12, f?-hCG, Inhibin A, Activin A, PP13, PlGF, and PAPP-A) and Ut-A Doppler was primarily selected. In the selected literature, a combination of these markers was analyzed, and where relevant, the value of maternal characteristics was added. Measurements of serum markers and Ut-A Doppler were performed between week 8 + 0 and 14 + 0 GA. Low levels of PP13, PlGF, and PAPP-A and elevated level of Inhibin A have been found to be significantly associated with the development of PE later in pregnancy. The detection rates of single markers, fixed at 10% false-positive rate, in the prediction of early-onset PE were relatively low, and ranged from 22% to 83%. Detection rates for combinations of multiple markers varied between 38% and 100%. Therefore, a combination of multiple markers yields high detection rates and is promising to identify patients at high risk of developing PE. However, large scale prospective studies are required to evaluate the power of this integrated approach in clinical practice. Target Audience: Obstetricians and Gynecologists, Family physicians Learning Objectives: After completion of this article, the reader should be better able to appraise the recent literature on the development of preeclampsia in the first-trimester, evaluate the predictive value of first-trimester markers and use first-trimester markers, either individually or in combination, to assess the risk of preeclampsia
Cardiovascular disease risk factors in women with a history of early-onset preeclampsia
No full textObjective: to assess the prevalence of established cardiovascular disease risk factors and to estimate 10-year absolute risk of cardiovascular disease after early-onset preeclampsia.Methods: we assessed major cardiovascular disease risk factors in 243 primiparous women with a history of early-onset preeclampsia (delivery at less than 34 weeks of gestation) at least 6 months after delivery; 374 healthy nonpregnant women of similar age served as a reference group.Results: after adjustment for age, we observed significantly higher means for body mass index, blood pressure, total and low-density lipoprotein cholesterol, triglycerides, glucose, and lower mean high-density lipoprotein cholesterol (all P<.01) in women with previous early-onset preeclampsia compared with the reference group. Prevalence of the metabolic syndrome was 15.2% compared with 4.3% (P<.001), two or more major cardiovascular disease risk factors were present in 51.0% compared with 26.5%, and three or more risk factors were present in 18.9% compared with 6.4%, respectively. Mean estimated 10-year cardiovascular disease risks by the Framingham Risk Score were 1.08% (95% confidence interval 1.04–1.12) and 1.01% (95% CI 1.00–1.01; P<.001) for the difference.Conclusionn: women with a history of early-onset preeclampsia have a high prevalence of several major cardiovascular disease risk factors. Although the estimated 10-year cardiovascular disease risk is low (less than 5%) after delivery, cardiovascular disease risk is expected to increase rapidly with increasing age
Maternal cardiovascular risk profile after placental abruption
No full textThe prevalence of premature cardiovascular diseases (CVD) is increased in women with a history of maternal placental syndromes, including pregnancy-associated hypertensive disorders (eg, preeclampsia), fetal growth restriction, and placental abruption. Whereas previous studies have shown a high prevalence of CVD risk factors after pregnancies complicated by preeclampsia, this has not been studied for women with a history of placental abruption. To explore the association of placental abruption with CVD risk factors after delivery, we compared 75 women with a history of placental abruption with a control group of 79 women with uneventful pregnancies at 6 to 9 months postpartum for the presence of common CVD risk factors. In a subanalysis, data were stratified according to the presence or absence of concomitant hypertensive disease and further adjusted for potential confounders. Women with previous placental abruption had significantly higher mean systolic blood pressure, body-mass index, fasting blood glucose, C-reactive protein, total cholesterol, high-density lipoprotein-cholesterol, and low-density lipoprotein-cholesterol as compared with controls with only uneventful pregnancies. In the subanalysis, all differences remained significant for women with a history of placental abruption only (ie, without concomitant gestational hypertension), except for the associations with low-density lipoprotein-cholesterol and diastolic and systolic blood pressure. Most likely, the identified CVD risk factors predispose to placental abruption and development of premature CVD later in life
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Polycystic ovary syndrome and early-onset preeclampsia: reproductive manifestations of increased cardiovascular risk
No full textObjective: Primary prevention of cardiovascular disease (CVD) in women is a major healthcare issue. Detection of premenopausal women with increased risk of CVD could enhance prevention strategies and reduce first event-related morbidity and mortality. In this study, we argue that an unfavorable metabolic constitution in women may present itself early in life as a reproductive complication, such as polycystic ovary syndrome (PCOS) and preeclampsia. We evaluated the cardiovascular risk of women with a history of early-onset preeclampsia and women with PCOS and assessed their need for implementation of early risk factor-reduction strategies.Methods: We performed a standardized evaluation of 240 women with a history of early-onset preeclampsia and 456 women diagnosed with PCOS for established major CVD risk factors. Metabolic syndrome characteristics were analyzed per body mass index category.Results: Mean age was 30.6 and 29.0 years for women with preeclampsia and PCOS, respectively. High percentages of metabolic syndrome were found in both groups (preeclampsia group, 14.6%; and PCOS group, 18.4%), with an incidence of greater than 50% in both groups of women if body mass index was greater than 30 kg/m. Overall, more than 90% of the women qualified for either lifestyle or medical intervention according to the American Heart Association guideline for CVD prevention in women.Conclusions: Women with PCOS and early-onset preeclampsia already show an unfavorable cardiovascular risk profile with high need for lifestyle or medical intervention at a young age. We therefore recommend an active role of the gynecologist in routine screening and follow-up of women with reproductive conditions linked to future cardiovascular risk
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