The present study describes the distinct bone marrow (BM) and peripheral blood (PB) monocyte subpopulations detected by seven-colour flow cytometry. Mononuclear phagocytes were identified as viable CD172a(+) SWC8(-) CD203a(-) mononuclear leukocytes. After that, monocyte subpopulations were differentiated by using CD14, CD163 and SLA-DR markers. Four distinct monocyte subpopulations were found in the BM and PB. Based on the discovered populations two possible maturation pathways have been proposed. The first pathway was characterised by release of CD14(hi) CD163(-) SLA-DR(-) BM monocytes into the PB where they matured into CD14(low) CD163(+) SLA-DR(+) monocytes. In the alternative pathway the monocytes finalised their phenotypical maturation in the BM and then they were released into the PB as CD14(low) CD163(+) SLA-DR(+) cells. In Salmonella-infected piglets, the population of CD14(low) CD163(+) SLA-DR(+) monocytes was elevated in the BM and mesenteric lymph nodes (MLN), suggesting the role of this population in pathogenesis of Salmonella infection in pigs.
- MeSH
- Bone Marrow Cells classification cytology MeSH
- Membrane Proteins MeSH
- Monocytes classification cytology MeSH
- Swine Diseases blood microbiology MeSH
- Swine MeSH
- Flow Cytometry methods veterinary MeSH
- Salmonella enteritidis MeSH
- Salmonella Infections, Animal blood MeSH
- Animals MeSH
- Check Tag
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- MeSH
- Staining and Labeling methods utilization MeSH
- Hematology methods MeSH
- Histocytochemistry methods utilization MeSH
- Infectious Mononucleosis diagnosis etiology MeSH
- Blood immunology metabolism MeSH
- Leukocytes cytology immunology classification MeSH
- Humans MeSH
- Lymphocytes cytology immunology classification MeSH
- Monocytes cytology immunology classification MeSH
- Check Tag
- Humans MeSH
