Three proteins known as XIAP, BID, and Bcl-2 are responsible in part for the success of progesterone treatments in the prevention of preterm labor, according to research presented today at the 31st Annual meeting of the Society for Maternal-Fetal Medicine (SMFM) The Pregnancy Meeting. They may also play an important role in triggering normal labor.
The proteins prevent preterm birth by hindering apoptosis - the normal, orderly death of cells -- in the fetal membranes. Stronger, thicker fetal membranes are less likely to rupture prematurely leading to premature delivery, according to the study led by Errol R. Norwitz, MD, PhD, Ob/Gyn-in-Chief at Tufts Medical Center and chairman of Obstetrics/Gynecology at Tufts University School of Medicine.
"Dr. Norwitz's research adds to our basic understanding of what triggers labor, how the fetal membranes rupture and the role progesterone plays," said Alan R. Fleischman, MD, medical director of the March of Dimes.
Today's award-winning study, "Progesterone Inhibits Basal Apoptosis In Fetal Membranes By Altering Expression Of Both Pro- And Anti-Apoptotic Proteins," is the eighth study by SMFM members to be honored by the March of Dimes for innovative research focused on preventing premature birth. The research was supported in part by a March of Dimes grant. March of Dimes is conducting a national Prematurity Campaign aimed at using research and awareness to reduce the increasing rate of premature birth.