K. Drakenberg et al., CHARACTERIZATION OF AN INSULIN-LIKE-GROWTH-FACTOR (IGF) RECEPTOR AND THE INSULIN-LIKE EFFECTS OF IGF-1 IN THE BONY FISH, LATES-CALCARIFER, Regulatory peptides, 69(1), 1997, pp. 41-45
The present work is part of a broad phylogenetic study of the insulin
superfamily of peptides in lower vertebrates. In the bony fish barramu
ndi (Lates calcarifer), the presence of IGF receptors were investigate
d in the liver by means of competitive binding studies. The results su
ggested the presence of a type 1-like but no type 2-like IGF receptor.
We also demonstrated insulin-like effects of intraperitoneally inject
ed recombinant human (rh)-IGF-1 in barramundi with rh-ICF-l and rh-ins
ulin showing similar effects with respect to induction of hypoglycemia
and stimulation of incorporation of [C-14]-glucose into muscle glycog
en. (C) 1997 Elsevier Science Ireland Ltd.