Abstract
Background: The present research has been undertaken to study the therapeutic potential of mesenchymal stem cells (MSCs) for the treatment of neuroinflammation-induced cognitive disorders. Methods: Either umbilical cord or adipose MSCs were injected into mice treated with lipopolysaccharide. The mice were studied in behavioral tests, and their brains were examined by means of immunohistochemistry, electron microscopy and sandwich ELISA. Results: MSCs, introduced either intravenously or intraperitoneally, restored episodic memory of mice disturbed by inflammation, normalized nAChR and Aβ1-42 levels and stimulated proliferation of neural progenitor cells in the brain. The effect of MSCs was observed for months, whereas that of MSC-conditioned medium was transient and stimulated an immune reaction. SDF-1α potentiated the effects of MSCs on the brain and memory. Conclusion: MSCs of different origins provide a long-term therapeutic effect in the treatment of neuroinflammation-induced episodic memory impairment.
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