Abstract
Purpose
Spontaneous abortion or miscarriage is the natural death of an embryo or foetus in the early stages of prenatal development. Interleukin-10 is an anti-inflammatory cytokine, produced by human cytotrophoblasts, and defects in its production result in specific pathological conditions during pregnancy. The present study is aimed to evaluate the association of IL-10 -1082G/A polymorphism in spontaneous abortions by comparing foetal, maternal and paternal groups—a triad study.
Methods
A total of 50 families with spontaneous abortions and 60 families with medically terminated pregnancies were considered for the present study. DNA from foetal tissue and parental blood samples were extracted, and the genotype analysis of IL-10 -1082G/A promoter polymorphism was carried out by amplification refractory mutation system-polymerase chain reaction followed by agarose gel electrophoresis. A statistical analysis was applied to test for the significance of the results.
Results
There was a statistically significant difference in the distribution of AA genotypes and A allele of IL-10 -1082G/A between the two family groups among foetuses (P = 0.0002) and mothers (P = 0.00005). The paternal group showed no significant difference in the genotype distribution of IL-10 between cases and controls.
Conclusion
In conclusion, IL-10 G-1082A gene promoter polymorphism may act as a major genetic regulator in the etiology of spontaneous abortions.
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This is the first case-control and family-based triad study that has analysed the association between IL-10 gene (-1082G/A) polymorphism and spontaneous abortions. The findings of the present study showed a statistically significant association of IL 10 (-1082 G/A) with spontaneously aborted foetuses and mothers and not fathers with their respective control groups. IL-10 -1082AA genotype is a foetal risk as well as maternal risk but not a paternal risk factor for spontaneous abortions. IL-10 (-1082G/A) promoter polymorphism may act as a major genetic regulator in the etiology of spontaneous abortions.
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Vidyadhari, M., Sujatha, M., Krupa, P. et al. A functional polymorphism in the promoter region of interleukin-10 gene increases the risk for spontaneous abortions—a triad study. J Assist Reprod Genet 32, 1129–1134 (2015). https://doi.org/10.1007/s10815-015-0504-4
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DOI: https://doi.org/10.1007/s10815-015-0504-4