Chloe Alexandre, Giulia Miracca, Victor Duarte Holanda, Ashley Sharma, Kamila Kourbanova, Ashley Ferreira, Maíra A Bicca, Xiangsunze Zeng, Victoria A Nassar, Seungkyu Lee, Satvinder Kaur, Sridevi V Sarma, Pierre Sacré, Thomas E Scammell, Clifford J Woolf, Alban Latremoliere
Spontaneous pain, a major complaint of patients with neuropathic pain, has eluded study because there is no reliable marker in either preclinical models or clinical studies. Here, we performed a comprehensive electroencephalogram/electromyogram analysis of sleep in several mouse models of chronic pain: neuropathic (spared nerve injury and chronic constriction injury), inflammatory (Freund's complete adjuvant and carrageenan, plantar incision) and chemical pain (capsaicin). We find that peripheral axonal injury drives fragmentation of sleep by increasing brief arousals from non-rapid eye movement sleep (NREMS) without changing total sleep amount...
April 17, 2024: Science Translational Medicine