Differential regulation of monocyte matrix metalloproteinase and TIMP-1 production by TNF-alpha, granulocyte-macrophage CSF, and IL-1 beta through prostaglandin-dependent and -independent mechanisms.

Differential Regulation of Monocyte Matrix Metalloproteinase and TIMP-1 Production by TNF-a, Granulocyte-Macrophage CSF, and IL-1b Through Prostaglandin-Dependent and -Independent Mechanisms

Synergistic enhancement of cytokine-induced human monocyte matrix metalloproteinase-1 by C-reactive protein and oxidized LDL through differential regulation of monocyte chemotactic protein-1 and prostaglandin E2.

C-reactive protein (CRP) and oxidized LDL (ox-LDL) are associated with inflammatory lesions, such as coronary artery disease, in which monocytes and matrix metalloproteinases (MMPs) may play a major role in the rupture of atherosclerotic plaques. Monocytes are recruited to inflammation sites by monocyte chemoattractant protein-1 (MCP-1), which may also participate in the activation of monocytes...

Coordinate secretion of interleukin-1 beta and granulocyte-macrophage colony-stimulating factor by the blast cells of acute myeloblastic leukemia: role of interleukin-1 as an endogenous inducer.

Acute myeloblastic leukemia (AML) blasts have been shown to produce a variety of cytokines in culture such as interleukin-1 (IL-1), IL-6, granulocyte-, macrophage-, and granulocyte-macrophage colony-stimulating factor (GM-CSF), and tumor necrosis factor-alpha (TNF alpha). Using two sensitive and specific enzyme-linked immunosorbent assays for IL-1 beta and GM-CSF, we document in the present stu...

Serine protease inhibitors modulate chemotactic cytokine production by human lung fibroblasts in vitro.

Chemotactic chemokines can be released from lung fibroblasts in response to interleukin (IL)-1beta and tumor necrosis factor (TNF)-alpha. An imbalance between proteases and antiproteases has been observed at inflammatory sites, and, therefore, protease inhibitors might modulate fibroblast release of chemotactic cytokines. To test this hypothesis, serine protease inhibitors (FK-706, alpha(1)-ant...

Monocytes cultured in cytokine-defined environments differ from freshly isolated monocytes in their responses to IL-4 and IL-10.

To investigate the regulatory effects of the prototypic Th2 lymphocyte products and potential immunotherapeutic agents interleukin-4 (IL-4) and IL-10 on macrophages differentiated in vitro under different cytokine-defined environments, blood monocytes were incubated for 7 days in the presence of granulocyte-macrophage colony-stimulating factor (GM-CSF), macrophage colony-stimulating factor or I...