Lions Mane helps nerve damaged rats
http://www.ncbi.nlm.nih.gov/pubmed/23510212
So it is shown that reishi - reduces NF-kappaB.
There is a good article on Lions Mane i just found. it also should reduce nf-kappab a little bit? But lions mane is shown to increase Nerve growth factor...
http://examine.com/supplements/Yamabushitake/
Links that talk about how reducing NF-kappaB with different drugs, improves recovery significantly.
Inhibition of astroglial nuclear factor κB reduces inflammation and improves functional recovery after spinal cord injury
http://jem.rupress.org/content/202/1/145.short
Inhibition of intracellular signaling pathways NF-κB and MEK1/2 attenuates neuropathic pain development and enhances morphine analgesia
http://www.sciencedirect.com/science/article/pii/S1734114014001960
Protective effects and anti-apoptotic role of nerve growth factor on spinal cord neurons in sciatic nerve-injured rats
http://www.maneyonline.com/doi/abs/10.1179/1743132814Y.0000000333
Montelukast Attenuates Neuropathic Pain Through Inhibiting p38 Mitogen-Activated Protein Kinase and Nuclear Factor-Kappa B in a Rat Model of Chronic Constriction Injury
Curcumin (turmeric) is shown to help inflammation... bottom most links. Note: i don't know a trusted source for Curcumin... and not sure how they were taking it... and you need to take it with fat and pepper to absorb enough of it).
Curcumin promotes the spinal cord repair via inhibition of glial scar formation and inflammation
http://www.sciencedirect.com/science/article/pii/S0304394013010616
Stem Cell Therapy and Curcumin Synergistically Enhance Recovery from Spinal Cord Injury
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0088916
Anti-inflammatory effects of curcumin in experimental spinal cord injury in rats