<i>EVOLUTION OF BILIRUBIN-UDP-GLOCURONOSYLTRANSFERASE DURING DEVELOPMENT IN THE RAT</i>

Authors

  • María Helena Cantarino
  • Rosa María Arahuetes
  • Elvira Arza
  • Francisco J. Cubero
  • María del Socorro García-Barrutia
  • Agustín S. Ortiz
Keywords: bUDP-GT, enzime activity, bilirubin, microsome fraction, perinatal

Abstract

Conjugation of bilirubin and excretion by the liver is catalysed by the microsomal enzyme bilirubin-UDP- lucuronosyltransferase (bUDP-GT). It is well known that during gestation, the fetal liver in utero is incapable for capture, conjugation and clearance of bilirubin. However, we have previously demonstrated that the gene responsible for the enzyme starts to express by day 13 of gestation. Therefore, the aims of the present work are first, to carry out a procedure so as to determine the activity of the bUDP-GT in the hepatic tissue, and, second, to obtain new data about the changes during the perinatal development in the activity levels of the mentioned enzyme. On the one hand, we have analyzed both, the activation time of the microsomal fraction, which stabilizes after 30 minutes of incubation, and the changes in the enzyme activity which reach a maximum peak after 5 minutes of incubation. On the other hand, we only detect activity of the bUDP-GT at the final period of gestation, reaching adult levels during the first month of extrauterine life.

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Author Biographies

María Helena Cantarino

Universidad Complutense de Madrid

Rosa María Arahuetes

Universidad Complutense de Madrid

Elvira Arza

Universidad Complutense de Madrid

Francisco J. Cubero

Universidad Complutense de Madrid

María del Socorro García-Barrutia

UCM

Agustín S. Ortiz

Universidad Complutense de Madrid
How to Cite
Cantarino, M. H., Arahuetes, R. M., Arza, E., Cubero, F. J., García-Barrutia, M. del S., & Ortiz, A. S. (2002). <i>EVOLUTION OF BILIRUBIN-UDP-GLOCURONOSYLTRANSFERASE DURING DEVELOPMENT IN THE RAT</i>. Anales de Biología, (24), 155–160. Retrieved from https://revistas.um.es/analesbio/article/view/31531
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