Abstract:
:Interactions between interleukin 8 (IL-8) and endothelial cells play an important role in the emigration of mononuclear cells from the blood into areas of inflammation. We examined the ability of specific second-line antirheumatic drugs to regulate (IL-8) gene expression and protein secretion in interleukin 1 (IL-1) stimulated human umbilical vein endothelial cells and peripheral blood mononuclear cells. The drugs sodium aurothiomalate, D-penicillamine and sulphasalazine were all able to modulate IL-8 mRNA synthesis in and protein secretion from endothelial cells. A bimodal effect was observed: at low concentrations IL-8 was suppressed, whereas higher concentrations resulted in an increased IL-8 production. In endothelial cells, treatment with hydrocortisone led to a linear suppression of IL-8 production in concentrations ranging from 0.5 micrograms/ml up to 500 micrograms/ml. Sulphapyridine, auranofin, hydroxychloroquine and methotrexate, had no effect on IL-8 secretion in endothelial cells. By contrast, 5-aminosalicylic acid induced a threefold increase in the IL-8 release. In peripheral blood mononuclear cells it was only possible to suppress the IL-8 production by hydrocortisone treatment. These results indicate that suppression of IL-8 production in endothelial cells could be an important factor in the mode of action for a number of second-line antirheumatic drugs.
journal_name
Cytokinejournal_title
Cytokineauthors
Deleuran B,Kristensen M,Paludan K,Zachariae C,Larsen CG,Zachariae E,Thestrup-Pedersen Kdoi
10.1016/1043-4666(92)90085-6keywords:
subject
Has Abstractpub_date
1992-09-01 00:00:00pages
403-9issue
5eissn
1043-4666issn
1096-0023pii
1043-4666(92)90085-6journal_volume
4pub_type
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