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Velickovic I, Dalloul M, Wong KA, Bakare O, Schweis F, Garala M, Alam A, Medranda G, Lekovic J, Shuaib W, Tedjasukmana A, Little P, Hanono D, Wijetilaka R, Weedon J, Lin J, Toledano RD, Zhang M. Complement factor B activation in patients with preeclampsia. J Reprod Immunol 2015; 109:94-100. [PMID: 25604034 DOI: 10.1016/j.jri.2014.12.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 11/14/2014] [Accepted: 12/08/2014] [Indexed: 01/28/2023]
Abstract
Preeclampsia is a leading cause of maternal and fetal morbidity and mortality. Bb, the active fragment of complement factor B (fB), has been reported to be a predictor of preeclampsia. However, conflicting results have been found by some investigators. We hypothesized that the disagreement in findings may be due to the racial/ethnic differences among various study groups, and that fB activation is significant in women of an ethnic minority with preeclampsia. We investigated the maternal and fetal levels of Bb (the activated fB fragment) in pregnant women of an ethnic minority with or without preeclampsia. We enrolled 291 pregnant women (96% of an ethnic minority, including 78% African-American). Thirteen percent of these were diagnosed with preeclampsia. Maternal venous blood was collected from all participants together with fetal umbilical cord blood samples from 154 deliveries in the 291 women. The results were analyzed using the Mann-Whitney U test and multivariate analyses. Maternal Bb levels were significantly higher in the preeclamptic group than in the nonpreeclamptic group. Levels of Bb in fetal cord blood were similar in both groups. Subgroup analyses of African-American patients' results confirmed the study hypothesis that there would be a significant increase in Bb in the maternal blood of the preeclamptic group and no increase in Bb in the fetal cord blood of this group. These results suggest that a maternal immune response through complement fB might play a role in the development of preeclampsia, particularly in African-American patients.
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Affiliation(s)
- Ivan Velickovic
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Mudar Dalloul
- Department of Obstetrics & Gynecology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Karen A Wong
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Olufunke Bakare
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Franz Schweis
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Maya Garala
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Amit Alam
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Giorgio Medranda
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Jovana Lekovic
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Waqas Shuaib
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Andreas Tedjasukmana
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Perry Little
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Daniel Hanono
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Ruvini Wijetilaka
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA; Department of Anesthesiology, Lutheran Medical Center, Brooklyn, NY 11220, USA
| | - Jeremy Weedon
- Scientific Computing Center, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Jun Lin
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA; Department of Anesthesiology, University Hospital of Brooklyn at Long Island College Hospital, Brooklyn, NY 11201, USA
| | - Roulhac d'Arby Toledano
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA; Department of Anesthesiology, Lutheran Medical Center, Brooklyn, NY 11220, USA
| | - Ming Zhang
- Department of Anesthesiology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA; Department of Cell Biology, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA.
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Johansson A, Løset M, Mundal SB, Johnson MP, Freed KA, Fenstad MH, Moses EK, Austgulen R, Blangero J. Partial correlation network analyses to detect altered gene interactions in human disease: using preeclampsia as a model. Hum Genet 2011; 129:25-34. [PMID: 20931231 PMCID: PMC3332147 DOI: 10.1007/s00439-010-0893-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2010] [Accepted: 09/16/2010] [Indexed: 01/21/2023]
Abstract
Differences in gene expression between cases and controls have been identified for a number of human diseases. However, the underlying mechanisms of transcriptional regulation remain largely unknown. Beyond comparisons of absolute or relative expression levels, disease states may be associated with alterations in the observed correlational patterns among sets of genes. Here we use partial correlation networks aiming to compare the transcriptional co-regulation for 222 genes that are differentially expressed in decidual tissues between preeclampsia (PE) cases and non-PE controls. Partial correlation coefficients (PCCs) have been calculated in cases (N = 37) and controls (N = 58) separately. For all PCCs, we tested if they were significant non-zero in the cases and controls separately. In addition, to examine if a given PCC is different between the cases and controls, we tested if the difference between two PCCs were significant non-zero. In the group with PE cases, only five PCCs were significant (FDR p value ≤ 0.05), of which none were significantly different from the PCCs in the controls. However, in the controls we identified a total of 56 statistically significant PCCs (FDR p value ≤ 0.05), of which 31 were also significantly different (FDR p value ≤ 0.05) from the PCCs in the PE cases. The identified partial correlation networks included genes that are potentially relevant for developing PE, including both known susceptibility genes (EGFL7, HES1) and novel candidate genes (CFH, NADSYN1, DBP, FIGLA). Our results might suggest that disturbed interactions, or higher order relationships between these genes play an important role in developing the disease.
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Affiliation(s)
- Asa Johansson
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Kvinne-barn senteret, 1.etg. Øst, 7006 Trondheim, Norway.
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