Rheumatoid arthritis (RA) and spondyloarthritis (SpA) are progressive inflammatory conditions that cause joint damage over time. Genetic factors play a role in both diseases, but they do not fully ...

It’s hard to be a fan of tryptophan these days. The essential amino acid oft-blamed for inducing sleepiness after ...

Tryptophan 2,3-dioxygenase (TDO), as a key rate-limiting enzyme, is widely involved in tryptophan metabolism and the regulation of various physiological and pathological processes. TDO activity can be ...