Human resident peritoneal macrophages: phenotype and biology

Alice Eischen, A Eischen, B Duclos, Brigitte Duclos, M. Schmitt‐Goguel, M Schmitt-Goguel, N. Rouyer, J P Bergerat, Bergerat Jp, M. Hummel, Mary Hummel, R. Oskam, F Oberling
British journal of haematology · 1994 · vol. 88(4) , pp. 712–722 · doi:10.1111/j.1365-2141.1994.tb05109.x · PMID:7819096 · W2056729784
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Human resident peritoneal macrophages exhibit a differentiated phenotype with elevated CD14, CD68, and MHC class II expression, and they produce inflammatory cytokines independently of exogenous stimulation.

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Abstract

Macrophages represent the primary line of host defences in the peritoneal cavity. In order to study the metabolic activity and maturation stage of human resident peritoneal macrophages (PM phi). peritoneal fluid (PF) was taken by Douglas puncture from healthy hyperstimulated infertile women undergoing oocyte retrieval for in vitro fertilization. Peritoneal fluid and macrophage culture fluids were studied for different inflammatory mediators such as interleukin-1 (IL-1), tumour necrosis factor (TNF) and interleukin-6 (IL-6). The level of macrophage colony-stimulating factor (M-CSF), which represents a macrophage proliferation and differentiation factor, was determined in the PF and in the serum. Furthermore, the macrophage phenotypic profile was analysed, in particular the expression of sex steroid hormone receptors. IL-1. IL-6 and TNF were detectable in the PF and in the culture supernatants of PM phi whether stimulated or not by IFN-gamma and LPS. The mean level of M-CSF in the PF was 6.37 +/- 2.02 ng/ml as measured by RIA; this level did not correlate with the concentration of PM phi. The mean PF-M-CSF level was 1.4-fold higher than in the sera as measured by a EIA. Oestrogen and progesterone receptors could not be demonstrated on the PM phi analysed, so that a direct relationship between the ovarian steroid concentration in these women and the function of PM phi was unlikely. As compared to peripheral blood monocytes (Mo). PM phi showed a phenotypic profile, with some more mature features, e.g. increased expression of CD14, CD68, FcRII, FcRIII, CR3, CR4 and MHC class II determinants. These results indicate that resident PM phi have acquired in vivo a certain differentiation and/or activation state under micro-environmental factors where cytokines secreted by the M phi themselves or by other cells such as the mesothelium may play important roles.

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MeSH descriptors

Ascitic Fluid Infertility, Female Macrophages, Peritoneal Antibodies, Monoclonal Ascitic Fluid Cell Count Female Humans Immunophenotyping Infertility, Female Interleukin-1 Interleukin-1 Interleukin-6 Interleukin-6 Macrophage Colony-Stimulating Factor Macrophage Colony-Stimulating Factor Macrophages, Peritoneal Macrophages, Peritoneal Ovulation Induction Phagocytosis

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