Made available in DSpace on 2015-04-14T13:35:55Z (GMT). No. of bitstreams: 1
457603.pdf: 4114697 bytes, checksum: 30488d5fc2e6e62e5cc39c6a00ca84ff (MD5)
Previous issue date: 2014-02-21 / Objective: To evaluate the association of leptin levels in the maternal plasma, umbilical cord plasma and placental tissue of normotensive and preeclamptic (PE) pregnant women. Patients and methods: Leptin levels were analysed in the maternal plasma, umbilical cord plasma and placental tissue of 50 women with preeclampsia and 67 normotensive pregnant women. Plasma and placental leptin were measured using the MagPlexTH-C microspheres system. Results: Leptin levels were 40 times higher in the maternal plasma and 82 times higher in the placental tissue of patients with preeclampsia in comparison to the controls. The geometric means found were 19.59 ng/mL and 163.31 mg/g in the PE group, and 13.96 ng/mL and 89.95 mg/g in the normotensive group, respectively. Analysis of the umbilical cord plasma showed no significant difference between the groups. The mean ratios found after adjustment for maternal age, BMI and gestational age were: maternal plasma (MR=1.40; 95% CI: 1.00 - 1.97, p=0.049), fetal plasma (MR=1.33; 95% CI: 0.85- 2.09, p=0.216) and placenta (MR=1.82; 95% CI: 1.11 - 2.98, p=0.019). Conclusion: Leptin values found in patients with preeclampsia are significantly increased in maternal plasma and placental tissue in comparison to the control. The extremely high levels in the placenta are believed to have resulted from studies that specifically aimed to evaluate biomarkers. / Objetivo: Avaliar a associa??o dos n?veis de leptina no plasma materno, plasma do cord?o umbilical e tecido placent?rio de gestantes normotensas e com pr?-ecl?mpsia (PE). Pacientes e m?todos: Foram analisados os n?veis de leptina no plasma materno, plasma do cord?o umbilical e tecido placent?rio de 50 gestantes com pr?-ecl?mpsia e 67 gestantes normotensas. A leptina foi mensurada em plasma e placenta utilizando o Sistema MagPlexTH-C - ensaio de microesferas.Resultados: Os n?veis de leptina foram 40 vezes maiores no plasma materno e 82 vezes maiores no tecido placent?rio das pacientes pr?-ecl?mpticas em compara??o aos controles. No grupo Pr?-ecl?mpsia encontramos as m?dias geom?tricas de 19.59 ng/mL e 163.31 mg/g e nas normotensas 13.96 ng/mL e 89.95 mg/g respectivamente. A an?lise do plasma do cord?o umbilical n?o mostrou diferen?a significativa entre os grupos. As raz?es das m?dias encontradas ap?s ajuste para idade materna, ?ndice de massa corporal e idade gestacional, foram no plasma materno (rm=1.40; IC 95%: 1.00 - 1,97, p=0.049), no plasma fetal (rm=1.33; IC 95%: 0.85- 2.09, p=0.216) e na placenta (rm=1.82; IC 95%: 1.11 - 2,98, p=0.019). Conclus?o: Os valores de leptina encontrados nas pacientes com pr?-ecl?mpsia quando comparados ao controle s?o significativamente maiores no plasma da m?e e no tecido placent?rio. Os n?veis extremamente elevados na placenta s?o sugestivos de estudos com desenho espec?fico para investiga??o de biomarcador.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.pucrs.br:tede/1769 |
| Date | 21 February 2014 |
| Creators | Comparsi, Adriana Barbieri |
| Contributors | Costa, Bartira Erc?lia Pinheiro da |
| Publisher | Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Programa de P?s-Gradua??o em Medicina e Ci?ncias da Sa?de, PUCRS, BR, Faculdade de Medicina |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_RS, instname:Pontifícia Universidade Católica do Rio Grande do Sul, instacron:PUC_RS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 7620745074616285884, 500, 600, -8624664729441623247 |
Page generated in 0.0029 seconds