PMID- 2002624 OWN - NLM STAT- MEDLINE DCOM- 19910417 LR - 20190725 IS - 0085-2538 (Print) IS - 0085-2538 (Linking) VI - 39 IP - 1 DP - 1991 Jan TI - Glomerular interleukin 1 production is dependent on macrophage infiltration in anti-GBM glomerulonephritis. PG - 103-10 AB - Both macrophages and glomerular mesangial cells have the potential to synthesize interleukin 1 (IL-1), however, their respective contributions to IL-1 production in anti-GBM glomerulonephritis (GN) are unknown. To address this problem, IL-1 production by glomeruli from rabbits with macrophage-associated anti-GBM GN (passive autologous anti-GBM GN [PAGBMGN]) and macrophage independent (heterologous phase) anti-GBM GN was studied. Macrophage-infiltrated nephritic glomeruli produced IL-1 bioactivity which was inhibitable by an anti-IL-1 antibody, and had a molecular weight consistent with rabbit IL-1. Glomerular IL-1 production in PAGBMGN was markedly augmented (1.43 +/- 0.79 U/10(3) glomeruli [gloms]/24 hr) compared to normal glomeruli (0.13 +/- 0.06 U/10(3) gloms/24 hr, P less than 0.05) or glomeruli from rabbits with macrophage independent GN (0.11 +/- 0.07 U/10(3) gloms/24 hr, P less than 0.05). IL-1 production by glomeruli from leukocyte depleted rabbits with PAGBMGN (0.16 +/- 0.07 U/10(3) gloms/24 hr) was not significantly elevated compared to normal glomeruli. Glomerular macrophages from rabbits with PAGBMGN produced more IL-1 (3.62 +/- 1.63 U/10(3) cells/24 hr) than blood monocytes (0.51 +/- 0.30 U/10(3) cells/24 hr) or alveolar macrophages (0.24 +/- 0.12 U/10(3) cells/24 hr) from the same animals. These results show that in experimental anti-GBM GN where injury is macrophage dependent, IL-1 production is also macrophage dependent and infiltrating glomerular macrophages are the major source of IL-1. Further, as glomerular IL-1 production was not significantly augmented in GN in the absence of macrophages, glomerular deposition of immunoglobulin and complement alone do not stimulate significant IL-1 production by intrinsic glomerular cells in experimental anti-GBM GN. FAU - Tipping, P G AU - Tipping PG AD - Department of Medicine, Monash University, Prince Henry's Hospital, Melbourne, Australia. FAU - Lowe, M G AU - Lowe MG FAU - Holdsworth, S R AU - Holdsworth SR LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Kidney Int JT - Kidney international JID - 0323470 RN - 0 (Antibodies) RN - 0 (Autoantibodies) RN - 0 (Interleukin-1) RN - 0 (antiglomerular basement membrane antibody) SB - IM MH - Animals MH - Antibodies/*immunology MH - Autoantibodies MH - Glomerulonephritis/*immunology MH - Interleukin-1/*biosynthesis MH - Kidney Glomerulus/*immunology/metabolism MH - Macrophages/*immunology MH - Rabbits EDAT- 1991/01/01 00:00 MHDA- 1991/01/01 00:01 CRDT- 1991/01/01 00:00 PHST- 1991/01/01 00:00 [pubmed] PHST- 1991/01/01 00:01 [medline] PHST- 1991/01/01 00:00 [entrez] AID - S0085-2538(15)57094-4 [pii] AID - 10.1038/ki.1991.13 [doi] PST - ppublish SO - Kidney Int. 1991 Jan;39(1):103-10. doi: 10.1038/ki.1991.13.