Biochemical Changes in Human Cervical Connective Tissue after Local Application of Prostaglandin E2

Abstract
Intracervical application of prostaglandin E2 in the late first trimester induces (1) softening of the cervix tissue; (2) increase in sulfated glycosaminoglycans (18 ± 12%, mean ± SEM): (3) no change in hyaluronic acid and water; (4) decrease in pepsin-extractable collagen, and (5) apparent decrease in collagenase. A high activity of collagenase in combination with a replacement of collagen with sulfated glycosaminoglycans may be of importance for the ripening process.