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  • Title: Maternal plasma transforming growth factor-beta1 concentrations in preeclamptic and normotensive pregnant Zimbabwean women.
    Author: Enquobahrie DA, Williams MA, Qiu C, Woelk GB, Mahomed K.
    Journal: J Matern Fetal Neonatal Med; 2005 May; 17(5):343-8. PubMed ID: 16147848.
    Abstract:
    OBJECTIVE: We examined the relationship between maternal plasma transforming growth factor-beta1 (TGF-beta1) concentrations and risk of preeclampsia among women delivering at Harare Maternity Hospital in Zimbabwe. We evaluated the relationship in the context of maternal systemic inflammation using plasma tumor necrosis factor-a soluble receptor p55 (sTNFp55) as a marker. METHODS: 132 women with preeclampsia and 180 controls were included in this case-control study analysis. Maternal post-diagnosis plasma TGF-beta1 and sTNFp55 concentrations were determined using immunoassays. Logistic regression procedures were used to estimate odds ratios (OR) and 95% confidence intervals (CI) adjusted for confounders. RESULTS: A linear increase in preeclampsia risk was observed with increasing quartiles of TGF-beta1 concentrations (p<0.01). Women whose TGF-beta1 concentrations were >or=25.1 ng/ml (quartile 4) had a 2.5-fold (95% CI 1.2-5.6) increased risk of preeclampsia as compared with those women whose concentrations were <11.2 ng/ml (quartile 1). Relative to women with no evidence of systemic inflammation and no elevated TGF-beta1 concentrations, those women who were jointly positive for elevated TGF-beta1 and sTNFp55 concentrations experienced a 5.3-fold (95% CI 2.3-12.0) increased risk of preeclampsia. CONCLUSION: Overall, we noted that elevated TGF-beta1 is associated with an increased risk of preeclampsia. We also noted that the preeclampsia risk is exaggerated in the presence of maternal systemic inflammation.
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