Written from the studies on PubMed, searched on 12 Nov 2026. Every number below comes from a study listed under Sources. The text was written by AI from these studies; each sentence names the studies it comes from.
The claim
Posts say polylaminin, a lab-made form of a protein, can help people with spinal cord injury regain movement.
Where research stands
We found 3 published papers on polylaminin and spinal cord injury. They were published between 2010 and 2026. 1 of them is a study in people. In all, 8 people took part. None of them compared people who got it with a group that did not. 1 was a study in animals, and none was only in cells in the lab.
- 1In people
- 1In animals
- 0Only in the lab
What the studies found
Trials in people
The one study in people was small and was done in Brazil. [1] It had 8 patients with a new, complete spinal cord injury. [1] All 8 got the treatment. There was no group to compare with. [1] The main aim was to check safety, not whether it works. [1] 6 of the 8 improved. But with so few people and no comparison group, we cannot tell if the treatment or natural recovery caused it. [1]
Other studies in people
A letter replied to this study. We have no text for it, so we cannot say what it argues. [2]
In animals
A study in rats found that polylaminin improved movement. [3] After a full cut of the spinal cord, the walking score rose from 4.2 to 8.8 in treated rats. [3] The authors also saw nerve fibres growing across the cut. [3] Results in rats do not always hold in people. [3]
Verdict
The only test in people was very small and had no comparison group. [1] Rat results look promising, but they do not always hold in people, so the claim is unproven. [3]
Unproven means: it was only tested in animals or cells, or there is too little or mixed data from people. How we rate claims
What this means for you: A study in people is not proof that it helps you. Do not stop or change your medicines because of it. Ask your doctor before you start taking it.
Sources
- Intramedullary injection of polymerized laminin in acute traumatic spinal cord injury: a first-in-human pilot study.2026 · Spinal Cord · Study in people
- Letter in response to "Intramedullary injection of polymerized laminin in acute traumatic spinal cord injury: a first-in-human pilot study1".2026 · Spinal Cord · Other paper
- Polylaminin, a polymeric form of laminin, promotes regeneration after spinal cord injury.2010 · FASEB J · In animals