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  • Title: Transplacental transport of alpha 2-macroglobulin (alpha 2M) and induction of alpha 2M in maternal and neonatal rats with acute inflammation.
    Author: Shimizu M, Jinbo T, Kashiwazaki N, Kuribayashi T, Nomura M, Yamamoto S.
    Journal: Exp Anim; 2002 Jul; 51(4):361-5. PubMed ID: 12221929.
    Abstract:
    The aims of this study were to investigate transplacental transport of alpha 2-macroglobulin (alpha 2M) in rats in rats and to examine the degree of alpha 2M induction in maternal and neonatal rats with acute inflammation. Serum was collected from healthy pregnant CD (IGS) rats, neonates of the pregnant rats and their cord blood. Additional serum samples were obtained from pregnant rats inoculated with an inflammatory agent, turpentine oil, their neonates and cord blood, and neonates inoculated with turpentine oil. The serum levels of alpha 2M were measured by means of an enzyme-linked immunosorbent assay. The average serum levels of alpha 2M in healthy neonates and cord blood were about 380 micrograms/ml. Serum a2M level in neonates inoculated with turpentine oil averaged about 580 micrograms/ml. Serum alpha 2M levels in maternal rats inoculated with turpentine oil, neonates from those rats and their cord blood were elevated, the values being 2,000 micrograms/ml or higher. It was demonstrated that induction of alpha 2M in neonatal rats was lower than in maternal rats when inoculated with turpentine oil. These results suggest that alpha 2M is transplacentally transported from maternal rats to fetal ones.
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