title: Evidence for the placental origin of hyaluronidase in the maternal circulation.
abstract: The level of maternal serum hyaluronidase activity was shown to rise during pregnancy. Investigation of non-pregnant females did not demonstrate hormonal control of enzyme activity. The findings of a quantitative increase in serum hyaluronidase activity during pregnancy is presented in conjunction with previous evidence of a qualitative change in this enzyme as evidence for a placental origin of the increased activity demonstrated.
mesh_terms: D001219:Aspartate Aminotransferases / Q000097:blood; D005260:Female; D006801:Humans; D006821:Hyaluronoglucosaminidase / Q000032:analysis / Q000097:blood*; D006884:Hydroxybutyrate Dehydrogenase / Q000097:blood; D008297:Male; D008598:Menstruation; D010920:Placenta / Q000201:enzymology*; D011247:Pregnancy; D013997:Time Factors
chemical_list: D006884:Hydroxybutyrate Dehydrogenase; D001219:Aspartate Aminotransferases; D006821:Hyaluronoglucosaminidase