Active MMP-9 Levels May Serve as Marker of Behavior, Mood in Fragile X
An enzyme called matrix metalloproteinase 9 (MMP-9) is found at higher levels in the blood of people with fragile X syndrome than healthy people and may correlate with more aberrant behavior and anxiety-related symptoms, a study reported. Researchers determined total levels of MMP-9 and of its active form, but…