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Elevation of serum M-CSF concentrations during pregnancy and ovarian hyperstimulation
V Praloran1, L Coupey, M Donnard
1Laboratoire d'Hématologie Expérimentale, Faculté de Médecine, Limoges, France.
Abstract:
Macrophage colony stimulating factor (CSF-1 or M-CSF) is involved in haemopoiesis and probably in mouse gestation. Sexual steroids induce its production by uterine glandular epithelial cells and its receptor (product of the protooncogene C-FMS) is expressed on placental trophoblastic cells. We measured M-CSF serum levels in 119 pregnant women and in eight women undergoing ovarian hyperstimulation for in vitro fertilization. M-CSF increased early (4-8 weeks) and progressively during gestation. Its rapid elevation during the course of ovarian hyperstimulation suggests that its synthesis is probably induced by sexual steroids. This locally produced M-CSF could play a role in human pregnancy and in the pathogenesis of thrombocytopenias observed during pregnancy.
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