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Mesenchymal stem cell-derived conditioned medium (MSC-CM) contains bioactive factors that provide neuroprotection in cases of cerebral ischemia-reperfusion (IR) injury. This study aimed to compare the therapeutic potential of rat adipose-derived MSC-CM (rAD-MSC-CM) and chicken embryo liver-derived MSC-CM (cLD-MSC-CM) following global cerebral IR injury in male rats.
We harvested rAD-MSC-CM from the adipose tissue surrounding the epididymis of Wistar rats and cLD-MSC-CM from the liver tissue of 10-day-old chicken embryos. To induce global cerebral ischemia, we utilized a four-vessel occlusion (4VO) model in rats. After inducing ischemia, the conditioned media were administered via intravenous injection 30 minutes post-reperfusion. We evaluated the cognitive and non-cognitive functions of the animals using standard behavioral tests. Additionally, we assessed blood-brain barrier (BBB) permeability, brain water content (BWC), oxidative-antioxidative status, and conducted histopathological analyses of the hippocampal tissue in the IR rats.
Our findings demonstrated that treatment with both rAD-MSC-CM and cLD-MSC-CM significantly improved memory function, reduced anxiety- and depression-like behaviors, and enhanced exploratory activities. These behavioral improvements correlated with decreased BBB permeability and BWC, reduced oxidative stress, and mitigated histopathological changes in the hippocampal tissue.
Our findings suggest that both rAD-MSC-CM and cLD-MSC-CM offer protective benefits against IR injury, likely owing to their antioxidant properties.
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