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Immunology. 1993 Oct;80(2):259-65.

Stimulation of murine peritoneal macrophage functions by neuropeptide Y and peptide YY. Involvement of protein kinase C.

Author information

1
Departamento de Biología Animal II (Fisiología Animal), Facultad de Ciencias Biológicas, Universidad Complutense de Madrid, Spain.

Abstract

The peptides neuropeptide Y (NPY) and peptide YY (PYY) at concentrations from 10(-12) M to 10(-8) M have been shown in this study to stimulate significantly, in vitro, several functions of resting peritoneal macrophages from BALB/c mice: adherence to substrate, chemotaxis, ingestion of inert particles (latex beads) and foreign cells (Candida albicans), and production of superoxide anion measured by nitroblue tetrazolium reduction. A dose-response relationship was observed, with a maximal stimulation of the macrophage functions studied at 10(-10) M. These effects seem to be produced by specific receptors for the neuropeptides studied in peritoneal macrophages. Whereas the two peptides induced no change of intracellular cyclic AMP, they caused a significant stimulation of protein kinase C (PKC) in murine macrophages. These results suggest that NPY and PYY produce their effects on macrophage function through PKC activation.

PMID:
8262554
PMCID:
PMC1422192
[Indexed for MEDLINE]
Free PMC Article

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