Monday, April 29, 2013

Meloxicam and Diclofenac on the recruitment of leucocyte dung acute arthritis


Non-Steroidal anti-inflammatory drugs ease the acute inflammatory reaction and impair pro inflammatory events dependent on neutrophils but their main action is to inhibit cyclo-oxyganase, which are accountable for prostaglandin biosynthesis. There are two kind of COX, COX1 is theoretically dependable for homeostatic function of PGs and COX2 are important in PGE, production during inflammation.

This study focused on two NSAIDs drug named meloxicam (MXC) and diclofenac (DCF). The experiment was done on rabbit with antigen-induced arthritis that they were treated with MXC, DCF and control group. The results showed that, these two drug reduced arthritis due to down regulated interleukin 8(IL8) production but they did not prevent the monocyte chemotactic peptide-1 (MCP-1). Both IL8 and MCP-1 over expression in the rheumatoid synovial tissue cause the arthritis progression. These chemokines correlated with the severity of leucocyte infiltration.

Both drugs reduced PGE levels and the polymorphonuclear cells (PMN)
Concentration in synovial fluid, in other hand mononuclear cells (MN) concentration was not change at all in treated group but their data showed there was increased in MNN density due to active expression of MCP-1 in synovial membrane.

This study showed that, depletion a total PGE might not be pleasing because NASIDs reduced IL8 in arthritis but it also help MN recruitment, so there should be more research on this field.

Side note:  PMN and MN are both white blood cells. MN cells contain lymphocytes, monocytes and macrophages and PMN cell contain neutrophils, basophils and esoinophils. 

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