Microglial cells from psychologically stressed mice as an accelerator of cerebral cryptococcosis.

Abstract:

:Severe stress decreases the resistance of hosts exposed to microbial infections. As compared with two groups of control mice (normal mice, food-and-water-deprived mice [FWD mice]), restraint-stressed mice (RST mice) were shown to be greatly susceptible to intracerebral growth of Cryptococcus neoformans. The susceptibility of FWD mice to cerebral cryptococcosis increased to the level shown in RST mice, when these groups of mice were inoculated with microglial cells from the brains of RST mice. However, the susceptibility of FWD mice to cerebral cryptococcosis was not influenced by the adoptive transfer of microglial cells from normal mice or FWD mice. Microglial cells from RST mice produced CC-chemokine ligand-2 (CCL-2/monocyte chemoattractant protein 1), but not microglial cells from FWD mice. The resistance of RST mice to cerebral cryptococcosis was improved to the extent shown in FWD mice, when they were treated with anti-CCL-2 antibody. However, the susceptibility of normal mice and FWD mice to cerebral cryptococcosis increased to that shown in RST mice, when they were treated with rCCL-2. Microglial cells from RST mice were discriminated from the same cell preparations derived from FWD mice by their abilities to produce CCL-2, to phagocytize C. neoformans cells and to express Toll-like receptor 2. These results indicate that the resistance of RST mice to cerebral cryptococcosis is diminished by CCL-2 produced by microglial cells that are influenced by restraint stress.

journal_name

Immunol Cell Biol

authors

Shimoda M,Jones VC,Kobayashi M,Suzuki F

doi

10.1111/j.1440-1711.2006.01466.x

subject

Has Abstract

pub_date

2006-12-01 00:00:00

pages

551-6

issue

6

eissn

0818-9641

issn

1440-1711

pii

ICB1466

journal_volume

84

pub_type

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