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Aimed to investigate in an animal model the efficacy of humic acid by showing its antioxidant and anti-apoptotic effect comparing with the histopathological and neurological outcomes for the hypoxic-ischemic brain injury. 28 Wistar-Albino rats who were on the 7th postnatal day and weighting between 9 and 19 g randomly divided into four groups with developed HIE model under the gas anesthesia. 20 mg/kg and 10 mg/kg intraperitoneal HA were given to Group I and II respectively. Saline was given to Group III and the sham group was Group IV. The brain tissues were stained with cresyl-violet histochemistry for grading neuronal cell injury and caspase immunohistochemistry. The neuronal cell injury was statistically lower in all neuroanatomical lands in HA treatment groups. The degree of ischemia was significantly smaller in HA groups. Caspase-3 immunoreactivity was decreased in the HA groups compared with the saline group. When the groups were compared, there were no serious neuronal injury in Group I. This is the first study which investigates the role of HA in HIE model. HA reduces apoptosis and neuronal injury in cerebral tissue of the rats. This findings suggest that HA may be viable protective agent against HIE.

Effect of humic acid on oxidative stress and neuroprotection in hypoxic-ischemic brain injury: part 1