A preliminary rat study compared human amniotic-fluid stem cells delivered as single cells versus spheres after pudendal-nerve injury. Approximately 150-micrometer spheres formed over 16-20 hours produced better leak-point pressure and intercontraction intervals than single cells.
Key findings
- Spheres formed for 16-20 hours had minimal core necrosis and were selected as optimal. Sphere-treated rats showed better LPP, ICI, bladder and sphincter architecture, and higher VEGF, IL-6, IL-8, IL-9, and MIP-1beta, while myf5, myoD, myogenin, and desmin did not show consistently stronger expression.
Why this matters globally
Three-dimensional cell organization may improve survival and cell-cell signaling, a relevant regenerative strategy. If mechanism and safety are confirmed, it could inform sphincter-repair research, but it remains far from patient treatment and involves substantial human-cell regulatory requirements.
Thai researcher contribution
A Shinawatra University-affiliated researcher participated in an international stem-cell and bioengineering collaboration, while the experimental program involved several institutions in Taiwan and elsewhere.
Limitations to consider
This is a preliminary animal study, not a human trial. The abstract does not report animal numbers, randomization, blinding, follow-up duration, or cell persistence. It also contains a tension between low/unchanged myogenic markers and a concluding phrase implying significant increases, requiring full-text clarification.
Verify the original sources
International Journal of Stem CellsRead the original article↗DOI: 10.15283/ijsc25121