We have previously found leukemia inhibitory factor (LIF) mRNA in neur
ons of the adult rat brain. To identify which neuronal subpopulations
are expressing LIF transcripts, non-radioactive in situ hybridization
was combined with immunocytochemistry for various neuronal markers. St
udying the rat basal forebrain and cerebral cortex, we find LIF mRNA i
s expressed in both cholinergic and GABAergic neurons. These data sugg
est a role for LIF in the function of these mature neurons. (C) 1997 E
lsevier Science Ireland Ltd.