Grammatopoulos DK - It is now accepted that, in humans, placental corticotrophin-releasing hormone (CRH) is involved in the mechanisms controlling the onset of labour; however, the precise biological role in foeto-maternal tissues remain enigmatic. Maternal plasma levels of CRH rise exponentially as pregnancy progresses towards term and peak during labour; however, evidence to link this with an active role in the onset and progression of labour, is still inconclusive.
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