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Papers of the Week
Cholesterol-dependent LXR transcription factor activity represses pronociceptive effects of estrogen in sensory neurons and pain induced by myelin basic protein fragments.
Authors
Hullugundi SK, Dolkas J, Chernov AV, Yaksh TL, Eddinger KA, Angert M, Catroli GF, Strongin AY, Dougherty PM, Li Y, Quehenberger O, Armando A, Shubayev VIAbstract
A bioactive myelin basic protein (MBP) fragment, comprising MBP, is released in sciatic nerve after chronic constriction injury (CCI). Intraneural injection (IN) of MBP in an intact sciatic nerve is sufficient to induce persistent neuropathic pain-like behavior via robust transcriptional remodeling at the injection site and ipsilateral dorsal root ganglia (DRG) and spinal cord. The sex (female)-specific pronociceptive activity of MBP associates with sex-specific changes in cholesterol metabolism and activation of estrogen receptor (ESR)1 signaling.