Comparison of Three Types of Mesenchymal Stem Cells (Bone Marrow, Adipose Tissue, and Umbilical Cord-Derived) as Potential Sources for Inner Ear Regeneration.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

In this review, we compared the potential of mesenchymal stem cells derived from bone marrow, adipose tissue and umbilical cord as suitable sources for regeneration of inner ear hair cells and auditory neurons. Our intensive literature search indicates that stem cells in some of adult mammalian tissues, such as bone marrow, can generate new cells under physiological and pathological conditions. Among various types of stem cells, bone marrow-derived mesenchymal stem cells are one of the most promising candidates for cell replacement therapy. Mesenchymal stem cells have been reported to invade the damaged area, contribute to the structural reorganization of the damaged cochlea and improve incomplete hearing recovery. We suggest that bone marrow-derived mesenchymal stem cells would be more beneficial than other mesenchymal stem cells.

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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