This study examined any genes (the instructions that make up your body) or specific pieces of DNA in a mother and in her child that may cause preterm delivery and to see if this gene is influenced by someone's life experiences.
Smoking during pregnancy may cause preterm delivery, low birth weight and sudden infant death syndrome [ 8].
Uteroplacental ischemia may cause preterm birth, either due to preterm labor, preterm premature rupture of membranes, or medical indication (in the presence of preeclampsia or fetal growth restriction).
Those who underwent IVF-ET or ovarian stimulation treatments were more likely to have twins, which may cause preterm delivery and FGR [ 21].
We have reported the role of fetal membranes derived B-type natriuretic peptide (BNP) in maintaining myometrial quiescence during pregnancy, and that the premature decrease of BNP production may cause preterm labor and preterm birth [ 23– 25].
While each of these may cause preterm birth at any point in gestation, infection/inflammation predominates as a cause of early preterm birth 24-322 weeks gestation), and stress and uterine overdistension are associated mostly with late preterm birth 32-37 weekss). 32-37 weeks
