Efficacy of Cerebral Oxygen Saturation Monitoring for Perioperative Neurocognitive Disorder in Adult Non-cardiac Surgical Patients: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

Background: Perioperative neurocognitive disorders (PND) are common perioperative complications associated with various poor outcomes. Regional cerebral oxygen saturation (rSO2) monitoring is a non-invasive technique based on near-infrared spectroscopy detection. Due to the considerable controversy among currently published studies on the application of intraoperative rSO2 monitoring in adult patients undergoing elective non-cardiac surgery, this study aims to conduct a systematic review and meta-analysis to provide more comprehensive and robust evidence to support clinical decision-making.

Sevoflurane postconditioning alleviates hypoxic-ischemic brain damage in rats by inhibiting the endoplasmic reticulum stress PERK/ATF4/CHOP pathway.

Hypoxic-ischemic brain damage (HIBD) frequently induces cognitive impairments. Investigating the role of sevoflurane postconditioning (SPC) in HIBD, we conducted experiments involving HIBD modeling, SPC treatment, and interventions with the PERK inhibitor GSK2656157 or the PERK activator CCT020312, administered 30 min before modeling, followed by SPC treatment. Behavioral testing using the Morris water maze test and Neurological Deficiency Scale (NDS) was conducted.

Dexmedetomidine Protects SK-N-SH Nerve Cells from Oxidative Injury by Maintaining Iron Homeostasis.

Ferroptosis is characterized by the accumulation of iron-derived reactive oxygen species (ROS). Ferroptosis causes neuronal death in multiple neurological disorders. Dexmedetomidine (Dex), an extensively used anesthetic, has neuroprotective effects against ROS, but its effect on iron metabolism remains unknown.