PMID- 8062894 OWN - NLM STAT- MEDLINE DCOM- 19940919 LR - 20190909 IS - 0902-4441 (Print) IS - 0902-4441 (Linking) VI - 53 IP - 1 DP - 1994 Jul TI - Peripheral blood mononuclear cells from patients with rheumatoid arthritis suppress erythropoiesis in vitro via the production of tumor necrosis factor alpha. PG - 26-30 AB - Anemia is a frequent manifestation of rheumatoid arthritis, with a probably multifactorial etiology. We investigated the effect of peripheral blood mononuclear cell supernatants (PBMCS) from rheumatoid arthritis (RA) patients on hematopoietic colony formation in vitro, by using a methylcellulose assay. PBMCS from patients suppress in vitro erythroid (BFU-E), mixed-lineage (CFU-GEMM) and to a lesser degree granulocyte-macrophage (CFU-GM) progenitors. PBMCS from anemic RA patients were more suppressive for BFU-E than those from non-anemic patients. Addition of antibodies to tumor-necrosis factor alpha (TNF alpha) almost completely reversed the inhibition of BFU-E and CFU-GEMM, but had little effect on the CFU-GM colony formation. Antibodies to interferon-gamma (IFN gamma) and interleukin-1 (IL-1) were not effective. The above data suggest that PBMCS from RA patients suppress in vitro erythropoiesis via the production of TNF alpha; a pathogenetic role for TNF alpha in the anemia of RA can be implied. FAU - Katevas, P AU - Katevas P AD - Department of Internal Medicine, Patras University Medical School, Greece. FAU - Andonopoulos, A P AU - Andonopoulos AP FAU - Kourakli-Symeonidis, A AU - Kourakli-Symeonidis A FAU - Manopoulou, E AU - Manopoulou E FAU - Lafi, T AU - Lafi T FAU - Makri, M AU - Makri M FAU - Zoumbos, N C AU - Zoumbos NC LA - eng PT - Journal Article PL - England TA - Eur J Haematol JT - European journal of haematology JID - 8703985 RN - 0 (Antibodies) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antibodies/pharmacology MH - Arthritis, Rheumatoid/*blood MH - Erythroid Precursor Cells/pathology MH - *Erythropoiesis MH - Granulocytes/pathology MH - Hematopoietic Stem Cells/pathology MH - Humans MH - Leukocytes, Mononuclear/*physiology MH - Macrophages/pathology MH - Middle Aged MH - Tumor Necrosis Factor-alpha/antagonists & inhibitors/*biosynthesis EDAT- 1994/07/01 00:00 MHDA- 1994/07/01 00:01 CRDT- 1994/07/01 00:00 PHST- 1994/07/01 00:00 [pubmed] PHST- 1994/07/01 00:01 [medline] PHST- 1994/07/01 00:00 [entrez] AID - 10.1111/j.1600-0609.1994.tb00175.x [doi] PST - ppublish SO - Eur J Haematol. 1994 Jul;53(1):26-30. doi: 10.1111/j.1600-0609.1994.tb00175.x.