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Title: Increased nephrin in urinary extracellular vesicles of pregnant women with severe preeclampsia
Authors: Lima, Adrielle Kétcia Alves de
Keywords: podocin;wilms tumor 1;biomarker;podocyte;pregnancy
Issue Date: 20-Jul-2020
Publisher: Universidade Federal do Rio Grande do Norte
Citation: LIMA, Adrielle Kétcia Alves de. Increased nephrin in urinary extracellular vesicles of pregnant women with severe preeclampsia. 2020. 49 f. Trabalho de Conclusão de Curso (Graduação em Farmácia) - Departamento de Farmácia, Centro de Ciências da Saúde, Universidade Federal do Rio Grande do Norte, Natal, 2020.
Portuguese Abstract: Background: Preeclampsia is a systemic syndrome that affects pregnancy, characterized by increased blood pressure and, frequently, proteinuria. It is considered one of the main causes of maternal mortality and due to its possible serious complications, a predictive diagnostic tool is required. There has been increasing evidence that podocytes are related to kidney damage associated to preeclampsia and that the presence of podocyturia was found to be highly sensitive and specific to this disease. Objective: To characterize the expression profile of the podocyte proteins nephrin, podocin and Wilms’ tumor 1 (WT-1) present in the urinary extracellular vesicles of pregnant women diagnosed with severe preeclampsia in order to investigate their potential use as biomarkers in the early diagnosis of the disease. Study Design: This is a cross-sectional study, including 20 pregnant women divided into two groups. The first group with 10 pregnant women diagnosed with severe preeclampsia (case group - PE) and the second, with 10 normotensive pregnant women (control group - CG). Fasting blood samples were used to evaluate the patients' overall metabolic status. First morning urine samples were collected to determinate the albumin/creatinine ratio and to isolate urinary extracellular vesicles by ultracentrifugation. Nephrin, podocin and WT-1 expressions were evaluated by Western-blot. Results: Increased serum creatinine (p = 0.015), uric acid (p <0.001) and urinary albumin/creatinine ratio (p <0.001), as well as decreased serum albumin (p <0.001), total protein (p = 0.037) and calcium (p = 0.003) were found in case group when compared control group. Regarding the podocyte proteins in the urinary extracellular vesicles, significant increased nephrin/creatinine ratio (p = 0.008) was observed in preeclampsia when compared to those from normotensive pregnant women. In addition, the area under de Receiver Operating Characteristic Curve (AUROC) analysis showed that nephrin/creatinine ratio is a good predictor of albuminuria (AUROC = 0.833; p = 0.018). Conclusion: Increase of the nephrin in the urinary extracellular vesicles in pregnant women with preeclampsia proves to be a potential predictor for the early diagnosis of the disease.
Other Identifiers: 20170014211
Appears in Collections:Farmácia

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