The fragile X mental retardation protein (FMRP) — missing or at low levels in people with fragile X syndrome — plays a key role in regulating chronic visceral pain, according to a study. Insufficient FMRP might explain some of the self-injurious behavior seen among people with fragile X syndrome. The study, “FMRP acts as a key messenger for visceral pain modulation,” was published in the journal Molecular Pain. Fragile X is characterized by intellectual and developmental…

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