Abstract:
:The activities of a water-soluble peptidoglycan fragment derived from Staphylococcus epidermidis (SEPS) were examined as to their role in proliferation of spleen mononuclear cells (SMNC) from various strains of mice, the production of cytokines in vitro, and the induction of an inflammatory reaction in vivo. The proliferation of SMNC from C3H/HeN, C57BL/6, AKR, DBA/2, and ddY mice in reaction to SEPS in vitro showed a peak on day 3 and was greater than that of SMNC from BALB/c mice. The cells of SMNC from C3H/HeN mice responsive to SEPS were indicated to be mainly macrophages. A time kinetics experiment showed a coincidence in the proliferation of SMNC in reaction to SEPS and the detection of colony-stimulating factor (CSF) activity. Interleukin 2 (IL-2) activity was not detected during the incubation periods. When SEPS was administered to mice, much stronger mRNA transcripts of granulocyte-macrophage (GM)-CSF were detected in the lungs of C3H/HeN mice than in BALB/c mice. On the other hand, the amounts of IL-1 and PGE2 produced by SMNC of BALB/c mice stimulated by SEPS were greater than those produced in C3H/HeN mice. SEPS was confirmed to induce arthritis in BALB/c mice, but not in C3H/HeN mice. Our findings suggest that the production of GM-CSF is involved in the in vitro proliferation of SMNC in reaction to SEPS and that along with IL-1 and PGE2 production, contributes to the inflammation by SEPS in vivo.
journal_name
Microbiol Immunoljournal_title
Microbiology and immunologyauthors
Onta T,Sashida M,Fujii N,Sugawara S,Rikiishi H,Kumagai Kdoi
10.1111/j.1348-0421.1993.tb01679.xsubject
Has Abstractpub_date
1993-01-01 00:00:00pages
573-82issue
7eissn
0385-5600issn
1348-0421journal_volume
37pub_type
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