منابع مشابه
Transferrin iron uptake by human synovium.
55Fe-labelled transferrin was injected into the synovial fluid before synovectomy in 6 patients with rheumatoid arthritis. The results show that transferrin iron is taken up by synovial macrophages.
متن کاملLysosomal activation by neutral saccharides in cell cultures of synovium.
On exposure to sucrose or neutral polysaccharides, cell cultures from human synovium showed cytoplasmic vacuolation, increased numbers of lysosomes, and ultrastructural changes simulating those described in rheumatoid synovial intima and similarly treated embryonic caritlage and bone. These changes were accompanied by raised intracellular lysosomal enzyme activity without corresponding increase...
متن کاملActivation of the IL-4 STAT pathway in rheumatoid synovium.
STATs act as second messenger after binding of a signaling molecule to its receptor. IL-4 STAT is directly involved in the IL-4-dependent gene transcription in the nucleus. We examined the expression and activation of IL-4 STAT and its related kinase Jak-1 in rheumatoid synovium. Rheumatoid arthritis (RA) synovial frozen sections of patients with short-term (<1 year) and long-term disease (>2 y...
متن کاملIncreased Endogenous Nitric Oxide Release by Iron Chelation and Purinergic Activation in the Rat Carotid Body
We examined the hypothesis that hypoxic chemotransduction with stabilization of HIF-1 and activation of purinoceptors stimulate the endogenous NO production in the rat carotid body. The effects of blockade of purinoceptors with suramin, or blockade of HIF-1alpha hydroxylation by suppressing prolyl hydroxylase (PAH) activity on the endogenous NO release measured electrochemically by microsensor ...
متن کاملIron, lactoferrin and iron regulatory protein activity in the synovium; relative importance of iron loading and the inflammatory response.
OBJECTIVES To determine the ability of lactoferrin in rheumatoid arthritis (RA) synovial fluid to bind "free" iron, and to study the regulatory mechanisms therein that control iron homeostasis. METHODS "Free" iron was determined by the bleomycin assay and lactoferrin concentrations by enzyme linked immunosorbent assay. The activities of iron regulatory protein (IRP) and NF-kappa B in synovial...
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ژورنال
عنوان ژورنال: Arthritis & Rheumatism
سال: 1988
ISSN: 0004-3591,1529-0131
DOI: 10.1002/art.1780310511