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Arthritis

What Causes Rheumatoid Arthritis?


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Summary & Participants

Rheumatoid arthritis is a common disease of the immune system. Learn what factors can contribute to the progression of this disease.

Medically Reviewed On: July 18, 2008

Webcast Transcript


ERIC RUDERMAN, MD: There’s a cytokine called interluekin-1, and there’s another cytokine called tumor necrosis factor, or TNF, and they’re made by cells in the joint, picked up by other cells, and they seem to be an important factor in continuing the inflammatory process. And so when we look at people with rheumatoid arthritis, we see higher levels of these cytokine proteins in the joint tissues, in the fluid in the joints, and even in their blood.

ALISA KOCH, MD: Additionally, these cytokines will recruit other inflammatory cells, such as the lymphocytes, the T lymphocytes and the B lymphocytes into the joint tissue, and those cells will then proceed to proliferate and the B cells will make antibody, which can then later be detected in the joint fluid, the synovial fluid. The cytokines also have effects on blood vessels, so that they can cause the blood vessels to grow and proliferate.

CLIFTON O. BINGHAM, MD: This is all seen, clinically, by symptoms, such as joint swelling, warmth and tenderness. This is all being driven by these chemicals.

ANNOUNCER: While it is difficult to predict the course of the disease, certain factors play a role in how severe it may become.

ERIC RUDERMAN, MD: There are certain markers, markers of active inflammation, markers that include how many joints are involved, certain antibodies, like the rheumatoid factor or the CCP test, that, if they’re there, tell me that that person is more likely to have very aggressive disease. They’re not one-to-one, so there are people who have some of these markers that are associated with bad disease who may not in fact end up having bad disease. But when we see those, we’re even more concerned about making sure we start treatment so that we prevent what we assume are likely to be the consequences.

ANNOUNCER: Doctors say that regardless of the cause, early diagnosis and aggressive treatment are essential.

STEVEN ABRAMSON, MD: We all agree now that this can be a devastating disease that should be treated early, and that once the damage has begun to accumulate in the joints, it’s much harder to reverse. In fact, we’re not sure that medicines can restore the cartilage and bone, but we have very good evidence now that they prevent the damage to the bone and cartilage, and that’s the fundamental cause of disability.

ANNOUNCER: New treatments are offering patients improved outcomes.

STEVEN ABRAMSON, MD: We learned in the 1970s that the life expectancy was reduced by 10 to 15 years from simply having rheumatoid arthritis. So we’ve become much more aggressive in the past 25 years and have seen for the first time during this period that we can slow the progression of the disease, reduce disability, improve function, get people back to work. We rarely see people in wheelchairs anymore, and I think there’s been a real revolution because of better treatments.

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