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    Investigation of Neuroprotective Efficacy of Dexpanthenol in an Experimental Head Injury Model
    (Korean Neurosurgical Soc, 2024) Karatoprak, Durmus E.; Engin, Recai; Sahin, Sarp; Iclek, Ismail; Durak, Mehmet A.
    Objective : Dexpanthenol (DXP), which has known neuroprotective effects, has been shown to be beneficial in various experimental models and ischaemic diseases. The aim of this study was to investigate the possible neuroprotective effects of DXP in a traumatic brain injury (TBI) model. Methods : Thirty-six Wistar-Albino female rats, approximately 6 months old, weighing 220-285 g were used. All rats were subjected to closed head trauma by dropping a weight of 350 g on the parietal region from a height of 50 cm at an angle of 180 degrees in the prepared head trauma model setup. The rats were divided into four groups as control (group 1), trauma (group 2), trauma + DXP (group 3), and DXP (group 4). In group 3, DXP was administered intraperitoneally at a dose of 500 mg/kg for six times at 30 minutes, 6, 12, 24, 36, and 48 hours. In group 4, DXP was administered intraperitoneally simultaneously with group 3 without causing head trauma. Blood samples were taken from all rats 72 hours later for biochemical examination. After blood samples were taken, rats were decapitated under general anaesthesia. Cerebral tissue samples were taken from decapitated rats for immunohistochemical and histopathological examination. Results : Cytokine markers were found to be increased in posttraumatic brain tissue. Malondialdehyde and glutathione reductase levels were lower in group 3 compared to group 2. In addition, superoxide dismutase, glutathione peroxidase and catalase levels were significantly higher in group 3 compared to group 2. In histological evaluation, congestion in the piamater layer, cell infiltration, vascular congestion, hemorrhage and neuronal degeneration were significantly decreased in group 3 compared to group 2. DXP seems to be beneficial in neurological recovery in terms of histological and oxidative changes after head trauma in rats. Conclusion : DXP should be further evaluated for its possible therapeutic effect in TBI.
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    Investigation of the Effects of Dexpanthenol on Brain Tissue in Experimental Global Cerebral Ischemia-Reperfusion Injury
    (Turkish Neurosurgical Soc, 2025) Sahin, Sarp; Engin, Recai; Karatoprak, Durmus Emre; Iclek, Ismail; Onal, Selami Cagatay
    AIM: To investigate the protective and therapeutic effects of dexpanthenol in experimental global cerebral ischemia-reperfusion injury. MATERIAL and METHODS: Thirty-two female Wistar-Albino rats were used, and the rats were divided into four groups (sham, sschaemia reperfusion [IR], IR+dexpantol [IR+DXP] and DXP+IR), with eight animals in each group. At the end of 72 hours of reperfusion, the rats were decapitated after performing the rotarod and accelerrod tests, their brain tissues were removed and histopathologically examined, and superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione (GSH), and malonyldialdehyde (MDA) levels were evaluated. RESULTS: In this study, motor skill functions deteriorated in the ischemia-reperfusion (IR) group compared to the sham group, while significant improvements were observed in both the IR+DXP and DXP+IR groups (p<0.05). There were no notable differences in CAT, SOD, and GPx enzyme levels among the groups (p>0.05); however, malondialdehyde (MDA) levels increased in the IR group and decreased significantly in the IR+DXP group (p<0.05). Similarly, glutathione (GSH) levels were lower in the IR group but higher in the IR+DXP group (p<0.05). Neuronal degeneration also significantly increased in the IR group but decreased in the IR+DXP group (p<0.05). CONCLUSION: Overall, these findings suggest that dexpanthenol has a neuroprotective effect, particularly when administered during reperfusion, effectively improving motor skills and reducing neuronal damage.