PMID- 2199100 OWN - NLM STAT- MEDLINE DCOM- 19900913 LR - 20190820 IS - 0090-1229 (Print) IS - 0090-1229 (Linking) VI - 56 IP - 2 DP - 1990 Aug TI - Interleukin-6 production by tumor necrosis factor and lipopolysaccharide-stimulated rat renal cells. PG - 271-9 AB - Interleukin-6 (IL-6) is produced by various cell types, including monocytes, fibroblasts, and endothelial cells. IL-6 has also been detected in the urine of normal and renal transplant patients. Thus, the possible production of this cytokine by glomeruli and mesangial cells was investigated. Rat glomeruli were obtained by serial sieving of cortical homogenates of blood-free kidneys. Mesangial cells were obtained from the glomeruli and cultured under standard methods in RPMI 1640 medium containing 15% fetal calf serum. Glomeruli or confluent monolayers cells were then incubated in RPMI 1640 for 18 hr, in the presence or not of tumor necrosis factor-alpha (TNF alpha), lipopolysaccharide (LPS), or platelet-activating factor (PAF). IL-6 activity was measured using the IL-6-dependent cell line subclone (B 9-9) and expressed with respect to a standard curve established with recombinant IL-6. Glomeruli generate IL-6 upon TNF alpha (100 ng/ml) and LPS (1 microgram/ml), 11,500 +/- 3000 and 22,000 +/- 7500 U/ml, respectively. Nonstimulated mesangial cells produced 50 +/- 5 U/ml (mean +/- SEM, n = 4) of IL-6. TNF alpha (1 ng/ml) and LPS (1 microgram/ml) induced the production of 800 +/- 90 and 40,000 +/- 5000 U/ml, respectively (n = 4). In contrast, PAF (0.1 nM-1 microM) did not increase IL-6 production from glomeruli or mesangial cells. These results demonstrate that renal cells spontaneously generate minimal amounts of IL-6 and that this production is significantly increased by TNF alpha or LPS. A synergy between LPS and TNF alpha was induced in glomerular cells with 10 ng/ml of TNF alpha and graded concentrations of LPS. Thus, the production of IL-6 by glomerular cells and its modulation by other cytokines or endotoxins may play a role in the local immunological processes leading to immune glomerular diseases. FAU - Pirotzky, E AU - Pirotzky E AD - IHB Research Laboratories, Les Ulis, France. FAU - Delattre, R M AU - Delattre RM FAU - Hellegouarch, A AU - Hellegouarch A FAU - Lonchampt, M O AU - Lonchampt MO FAU - Aarden, L AU - Aarden L FAU - Braquet, P AU - Braquet P FAU - Galanaud, P AU - Galanaud P LA - eng PT - Journal Article PL - United States TA - Clin Immunol Immunopathol JT - Clinical immunology and immunopathology JID - 0356637 RN - 0 (Interleukin-6) RN - 0 (Lipopolysaccharides) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Animals MH - Culture Techniques MH - Dose-Response Relationship, Drug MH - Drug Synergism MH - Glomerular Mesangium/metabolism MH - Immunologic Techniques MH - Interleukin-6/*biosynthesis MH - Kidney Glomerulus/*metabolism MH - Lipopolysaccharides/*pharmacology MH - Rats MH - Tumor Necrosis Factor-alpha/*pharmacology EDAT- 1990/08/01 00:00 MHDA- 1990/08/01 00:01 CRDT- 1990/08/01 00:00 PHST- 1990/08/01 00:00 [pubmed] PHST- 1990/08/01 00:01 [medline] PHST- 1990/08/01 00:00 [entrez] AID - 10.1016/0090-1229(90)90148-j [doi] PST - ppublish SO - Clin Immunol Immunopathol. 1990 Aug;56(2):271-9. doi: 10.1016/0090-1229(90)90148-j.