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Cytokines are inflammatory mediators found in the circulation after surgery. Newborns have less protection against oxidation and are very susceptible to free radical oxidative damage. Melatonin has been reported recently to reduce oxidative stress in neonates with sepsis, asphyxia, and respiratory distress. The aim of this study has been to determine if melatonin would lower interleukin (IL)-6, IL-8, tumor necrosis factor alpha (TNF-α) and nitrite/nitrate (NOx) levels and modify serum inflammation parameters, improving the clinical course of surgical neonates.

Ten newborns (group 1), 5 with surgical malformations and respiratory distress (group 1a) and 5 with isolated abdominal surgical malformations (group 1b) received a total of 10 doses of melatonin (10 mg/kg) at defined times interval for 72 hours. The treatment was started within 3 hours after the end of surgery. Ten …