title: Correlation of serum unconjugated oestriol to red cell 2,3-diphosphoglycerate levels in diabetic pregnancy.
abstract: In order to evaluate the possible underlying factors for the increase in red cell 2,3-diphosphoglycerate content observed in late diabetic pregnancy, its relationship with serum unconjugated oestriol, human placental lactogen, haemoglobin and hydrogen ion concentrations was investigated in 42 pregnant diabetic women. A significant correlation was found between red cell 2,3-diphosphoglycerate and serum unconjugated oestriol (r = 0.54, p less than 0.001), whereas no correlation was present between 2,3-diphosphoglycerate and the following variables: arterial pH, haemoglobin concentration and human placental lactogen. The content of 2,3-diphosphoglycerate correlated significantly with haemoglobin-oxygen affinity expressed as P50 at pH 7.4 (r = 0.34, p less than 0.05). The results of this study indicate that serum unconjugated oestriol may participate in the regulation of red cell 2,3-diphosphoglycerate content and thereby of the maternal blood oxygen release to the fetus.
mesh_terms: D019794:2,3-Diphosphoglycerate; D000328:Adult; D004163:Diphosphoglyceric Acids / Q000097:blood*; D004964:Estriol / Q000097:blood*; D005260:Female; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D006863:Hydrogen-Ion Concentration; D010928:Placental Lactogen; D011247:Pregnancy; D011254:Pregnancy in Diabetics / Q000097:blood*
chemical_list: D004163:Diphosphoglyceric Acids; D006454:Hemoglobins; D019794:2,3-Diphosphoglycerate; D010928:Placental Lactogen; D004964:Estriol