Researchers have figured out that there are DNA variants in mothers and fetuses that seemed to have some kind of involvement in preterm labor and delivery. The inflammatory harmones may play a huge part in the labor process. When harmones are released by either the mother or the fetus they set in motion a cascade of events that can cause labor to begin. The evidence that was found explains why preterm labor happens in some pregnacies and not others. Reseachers hope that with there findings one day it will lead to ways to reduce the occurence of preterm birth.
Premature birth affects 13 million infants worldwide each year, roughly one half million occur in the United States. Infants who are born premature sometimes result in death or many other disabilities.
http://www.biologynews.net/archives/2010/02/04/nih_scientists_identify_maternal_and_fetal_genes_that_increase_preterm_birth_risk.html">NIH
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