title: Perinatal changes of 2,3-diphosphoglycerate and oxygen affinity in mammals not having fetal type hemoglobins.
abstract: The interrelationship of 2,3-diphosphoglycerate (2,3-DPG) and P50 levels during the fetal and postnatal life were determined in two mammalian species which do not have a switchover of hemoglobin type at the end of their fetal development. In the guinea pig and rabbit, the 2,3-DPG levels remain low during fetal life and increase only after birth remaining elevated throughout adult life. The adult levels were reached at 2 days of age in the guinea pig and the 20th day in rabbit. Fetal P50 values increased only after birth, paralleling the rise in the 2,3-DPG. The rapidity of the postnatal rise in 2,3-DPG and decrease in P50 appears related to the maturity of the newborn animal at birth in these species.
mesh_terms: D000818:Animals; D000831:Animals, Newborn / Q000097:blood*; D004163:Diphosphoglyceric Acids / Q000097:blood*; D004912:Erythrocytes / Q000032:analysis; D006168:Guinea Pigs; D006454:Hemoglobins; D010100:Oxygen / Q000097:blood*; D011817:Rabbits
chemical_list: D004163:Diphosphoglyceric Acids; D006454:Hemoglobins; D010100:Oxygen