Format

Send to

Choose Destination
Eur J Pharmacol. 1999 Jun 18;374(2):309-13.

Functional expression of the fractalkine (CX3C) receptor and its regulation by lipopolysaccharide in rat microglia.

Author information

1
Department of Medical Physiology, University of Groningen, Netherlands. h.w.g.m.boddeke@med.rug.nl

Abstract

Functional expression of CX3CR1, a recently discovered receptor for the chemokine fractalkine, was investigated in cultured rat microglia. Reverse transcriptase polymerase chain reaction (PCR) experiments show abundant expression of fractalkine receptor mRNA in microglia. mRNA expression of fractalkine was undetectable in astrocytes and microglia but was very strong in cortical neurons. Incubation of microglia with lipopolysaccharide (100 ng/ml) transiently suppressed expression of fractalkine receptor mRNA. Fractalkine induced a concentration-dependent (10(-10)-10(-8) M) and, at high concentrations, oscillatory mobilization of intracellular Ca2+ in microglia The concentration-response curve of fractalkine was shifted to the right after 12 h incubation with lipopolysaccharide. It is concluded that treatment with endotoxin downregulates expression of fractalkine receptor mRNA in rat microglia and suppresses the functional response to fractalkine.

PMID:
10422773
DOI:
10.1016/s0014-2999(99)00307-6
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center