IGF-I and IGF-II mRNA expression in primary cultures of fetal hepatocytes
Keywords:
IGFs regulation, Serum factors, Fetal hepatocyte culture.Abstract
Secretion of IGFs in adult animals is mainly regulated by growth hormone (GH),
but the role of other factors becomes principal during the perinatal period of the rat,
when the IGF response to GH is not yet fully established. In vitro models overcome
the simultaneous fluctuations of fuels and hormones that occur in live animal s and are
useful to investigate the underlying mechanisms by which hormones and nutrients
regulate IGF secretion. A selective primary culture of fetal rat hepatocytes has been
established in our laboratory in order to elucidate the molecular mechanism of action
of different factors and conditions on IGF-I and -11 gene expression during the perinatal
period of the rato In this preliminary study we report the regulatory role of semm on
IGF-I and -11 gene expression during stages of perinatal development. This system
should be a useful tool for further studies of molecular mechanisms of IGF-I and -11
regulation.
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