Leukaemia inhibitory factor (LIF) upregulates excitatory non-adrenergic non-cholinergic and maintains cholinergic neural function in tracheal explants.

Abstract:

:The effect of leukaemia inhibitory factor (LIF) in modulating cholinergic and sensory nerve function was examined using guinea-pig tracheal explants. Specific LIF receptors (LIFR) were immunolocalized to both cholinergic and sensory nerves. Release of SP in culture was not influenced by LIF. Similarly, maximum contraction to carbachol (C(max)) was not influenced by LIF. After 3 h, maximum (E(max)) eNANC-induced contraction in controls was 32+/-2. 5% of C(max). In LIF-treated preparations, E(max) was enhanced to 50+/-4.5% C(max) (P<0.05). Cholinergic nerve-induced contractions after 3 h incubation with LIF were similar to control. After 24 h, control E(max) was 25+/-4.5% C(max) (58% smaller than E(max) at 3 h). In contrast, in LIF-treated preparations, E(max) was 37+/-2.5% C(max), (24% smaller than at 3 h, P<0.05). This did not appear to be due to the effect of LIF on muscarinic M(2) receptor expression or function. Thus LIF appears to differentially influence the function of airway nerves and thus may provide an important link between the immune and neural systems.

journal_name

Br J Pharmacol

authors

Knight DA,D'Aprile AC,Spalding LJ,Goldie RG,Thompson PJ

doi

10.1038/sj.bjp.0703415

subject

Has Abstract

pub_date

2000-07-01 00:00:00

pages

975-9

issue

5

eissn

0007-1188

issn

1476-5381

journal_volume

130

pub_type

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