Autoradiographic distribution of bombesin/gastrin-releasing peptide receptors in fetal cortex transplants.

Abstract:

:Bombesin/gastrin-releasing peptide (BB/GRP) receptors were characterized in fetal cortex transplants in the rat. Using in vitro autoradiography techniques, the density of (125I-Tyr4)BB grains was low 2 weeks after transplantation but increased 4 weeks after cortex transplantation into the adult rat fourth ventricle. Densitometry analysis of the autoradiograms indicated that (125I-Tyr4)BB bound with high affinity (Kd = 5 nM) to a single class of sites in the transplant tissue. Specific (125I-Tyr4)BB binding was inhibited with high affinity by (Tyr4)BB but not by NMB (IC50 values of 3 and 100 nM, respectively). These data suggest that GRP may act as a novel growth factor and play a regulatory role in the development of fetal cortex transplants.

journal_name

Exp Neurol

journal_title

Experimental neurology

authors

Moody TW,Getz R,Rosenstein JM

doi

10.1006/exnr.1996.0190

subject

Has Abstract

pub_date

1996-11-01 00:00:00

pages

195-201

issue

1

eissn

0014-4886

issn

1090-2430

pii

S0014-4886(96)90190-9

journal_volume

142

pub_type

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