Green tea is already proven to fight cancer and make for a healthier heart, now some believe that it might also sooth rheumatoid arthritis.
The new study that was conducted at the by Salah-uddin Ahmed, an investigator at the University of Michigan Health System, in Ann Arbor. According to Forbes.com,
Ahmed isolated cells called synovial fibroblasts from the joints of patients with rheumatoid arthritis. These cells form a lining of tissue surrounding the capsule of the joints.
In patients with rheumatoid arthritis, this lining is inflamed, leading to long-term joint damage and chronic pain. About 2.1 million Americans have rheumatoid arthritis, according to the Arthritis Foundation.
Ahmed's team next cultured these cells and exposed them to the active ingredient in green tea, a compound named epigallocatechin-3-gallate (EGCG). Next, the cells were stimulated with a protein of the immune system known to play a role in causing joint degradation in rheumatoid arthritis. The protein is called cytokine interleukin-1 beta or IL-1B.
"IL-1B is a major player in mediating cartilage degradation," Ahmed explained.
In an earlier study, Ahmed's team found that fibroblasts pretreated with EGCG and then stimulated with cytokine IL-1B were better able to block IL-1B's ability to produce damaging proteins and enzymes. Those proteins and enzymes can infiltrate the joints and cause the cartilage breakdown seen in people with rheumatoid arthritis.
In the more recent study, the researchers focused on whether EGCG had the ability to block the activity of two potent molecules, IL-6 and cyclooxygenase-2 (Cox-2), which also play a role in breaking down bone in an RA joint.
The two molecules were suppressed by the EGCG, Ahmed's team found. While he said it is difficult to quantify exactly the effect of the suppression, the EGCG "blocked them significantly," he said.
According to Ahmed, it is still too early to recommend green tea to treat rheumatoid arthritis, but it is definitely a good base of information to support further exploration.
Ahmed also recommended drinking 3 to 4 eight ounce cups of green tea a day to keep blood levels more constant.
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