Moscow surgeons attempt spinal cord transplant in adult patient

Surgeons have attempted a spinal cord transplant in Moscow, placing a section of donor tissue into an adult patient who had suffered an injury three years earlier.

Key Clinical Takeaways:
• A 12-hour spinal cord transplant involving Chinese colleagues was performed, according to a statement on the hospital’s website citing Moscow mayor Sergei Sobyanin.
• The procedure involved transplanting a section of spinal cord from a brain-dead donor into the recipient.
• Independent neuroscientists have raised safety questions regarding the lack of published peer-reviewed evidence and animal data rigor.

Surgeons Attempt the Transplant Operation in Moscow

The procedure took place in Moscow, involving Chinese colleagues, according to statements from Ren. The recipient had suffered an injury three years prior to the operation. Moscow mayor Sergei Sobyanin and hospital officials released public statements confirming the 12-hour surgery, though no formal clinical results or neurological assessments have been published.

Historical Barriers Facing Nervous System Repair

Trauma to the central nervous system presents unique biological hurdles that prevent normal tissue regeneration. Slow regrowth of nerve cells can mean other body systems have altered their functions – or even broken down entirely – while waiting for disrupted signals.

Prior Proposals and Animal Experiments Involving Polyethylene Glycol

The concept of transplanting a donor spinal cord was outlined in a 2021 editorial co-authored by Ren, Italian neurosurgeon Sergio Canavero, and Korean neurologist C-Yoon Kim. Canavero previously gained international attention for proposing a human head transplant, a procedure that was never successfully demonstrated. While PEG-based repair of nervous tissue has shown experimental backing in animal studies—such as a recent test where pigs with freshly cut spinal cords regained the ability to stand and walk on all four limbs after receiving a gel treatment—critics question whether those findings apply to chronic human injuries where surrounding biological systems have already adapted to paralysis.

Scientists Warn of Risks and Suggest Alternative Therapies

University of Southampton neuroscientist Melissa Andrews questioned the rigor of the animal evidence supporting the procedure, warning that human experimentation carries substantial risks of severe surgical burdens and infections. Other medical approaches are currently undergoing clinical evaluation. Stem cell therapies utilize a patient’s own tissues to assist in repair without the complication of donor rejection. Meanwhile, digital technology has achieved functional milestones, such as a 2023 brain-spine interface that enabled a man with a chronic spinal cord injury to stand and climb stairs, and a 2024 trial testing electrical stimulation through the skin during rehabilitation.

Whether the recipient will regain any function remains entirely unconfirmed, as no peer-reviewed documentation has been released to substantiate the claims made by the surgical team.

Disclaimer: The information provided in this article is for educational and scientific communication purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider regarding any medical condition, diagnosis, or treatment plan.