Electronic Supplementary Material Accompanying the manuscript, “Immediate neurological recovery following perispinal etanercept years after brain injury” An objective review of the peer-reviewed medical literature establishes that the biological plausibility of the rapid favorable neurological effects seen here and in others treated with perispinal etanercept is unequivocal, and supported by extensive literature[1]: 1. Published, peer-reviewed reports of improvement in cognition in humans following the use of etanercept or TNF antibodies by independent academic sources other than the present authors[26]; 2. Favorable results of etanercept and other recombinant TNF inhibitors in animal models of stroke, traumatic brain injury, Alzheimer’s disease, and neuropathic pain[5-31]; 3. Published, peer-reviewed reports of rapid, significant and sustained neurological and clinical improvement following perispinal etanercept in patients with chronic neurological dysfunction following stroke, traumatic brain injury, Alzheimer’s disease, sciatica and other forms of spinal pain[1, 32-45]; 4. Positron emission tomographic imaging data and data from direct pathological examination of brain tissue demonstrating chronic microglial activation in the brain following stroke and traumatic brain injury in humans that may last for years after a single brain injury[46-51]; 5. Etanercept’s demonstrated ability to reduce microglial activation in multiple experimental models, including in models of brain injury[18, 19, 22, 25, 52]; 6. Known effects of TNF on synaptic function[2, 37, 53-61]; 7. Known rapid effects of TNF on neuronal and synaptic function[59-64]; 8. Recognition in the scientific community of the therapeutic potential of perispinal etanercept for treatment of neurological disorders, as indicated by scientific citation[2, 3, 5, 6, 16, 17, 19, 20, 24, 28, 56, 65-103]; 9. Four randomized, clinical trials reporting favorable effects of etanercept for spinal neuropathic pain supporting earlier reports of the effectiveness of perispinal etanercept for these indications[34, 35, 104-107]; 10. A known anatomic pathway for carriage of etanercept following perispinal injection, the vertebral venous plexus(Figure 1)[1, 42, 108-112]. 1. 2. 3. 4. 5. 6. Tobinick, E., Deciphering the physiology underlying the rapid clinical effects of perispinal etanercept in Alzheimer's disease. Curr Alzheimer Res, 2012. 9(1): p. 99-109. Griffin, W.S., Perispinal etanercept: potential as an Alzheimer therapeutic. J Neuroinflammation, 2008. 5: p. 3. Bassi, E. and C. De Filippi, Beneficial neurological effects observed in a patient with psoriasis treated with etanercept. Am J Clin Dermatol, 2010. 11 Suppl 1: p. 44-5. Chen, Y.M., et al., Improvement of cognition, a potential benefit of anti-TNF therapy in elderly patients with rheumatoid arthritis. Joint Bone Spine, 2010. 77(4): p. 366-7. Elfferich, M.D., et al., Everyday cognitive failure in sarcoidosis: the prevalence and the effect of anti-TNF-alpha treatment. Respiration, 2010. 80(3): p. 212-9. Shi, J.Q., et al., Cognitive improvement with intrathecal administration of infliximab in a woman with Alzheimer's disease. J Am Geriatr Soc, 2011. 59(6): p. 1142-4. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. Feuerstein, G.Z., T. Liu, and F.C. Barone, Cytokines, inflammation, and brain injury: role of tumor necrosis factor-alpha. Cerebrovasc Brain Metab Rev, 1994. 6(4): p. 341-60. Nawashiro, H., D. Martin, and J.M. Hallenbeck, Neuroprotective effects of TNF binding protein in focal cerebral ischemia. Brain Res, 1997. 778(2): p. 265-71. Ignatowski, T.A., et al., Brain-derived TNFalpha mediates neuropathic pain. Brain Res, 1999. 841(1-2): p. 70-7. Knoblach, S.M., L. Fan, and A.I. Faden, Early neuronal expression of tumor necrosis factor-alpha after experimental brain injury contributes to neurological impairment. J Neuroimmunol, 1999. 95(1-2): p. 115-25. Sommer, C., et al., Etanercept reduces hyperalgesia in experimental painful neuropathy. J Peripher Nerv Syst, 2001. 6(2): p. 67-72. Wang, Q., et al., Beta-amyloid inhibition of long-term potentiation is mediated via tumor necrosis factor. Eur J Neurosci, 2005. 22(11): p. 2827-32. Medeiros, R., et al., Connecting TNF-alpha signaling pathways to iNOS expression in a mouse model of Alzheimer's disease: relevance for the behavioral and synaptic deficits induced by amyloid beta protein. J Neurosci, 2007. 27(20): p. 5394-404. Kaushal, V. and L.C. Schlichter, Mechanisms of microglia-mediated neurotoxicity in a new model of the stroke penumbra. J Neurosci, 2008. 28(9): p. 2221-30. Zanella, J.M., et al., Effect of etanercept, a tumor necrosis factor-alpha inhibitor, on neuropathic pain in the rat chronic constriction injury model. Spine (Phila Pa 1976), 2008. 33(3): p. 227-34. Giuliani, F., et al., Decreased behavioral impairments in an Alzheimer mice model by interfering with TNF-alpha metabolism. Brain Res Bull, 2009. 80(4-5): p. 302-8. Kato, K., et al., Distribution and tumor necrosis factor-alpha isoform binding specificity of locally administered etanercept into injured and uninjured rat sciatic nerve. Neuroscience, 2009. 160(2): p. 492-500. Marchand, F., et al., Effects of Etanercept and Minocycline in a rat model of spinal cord injury. Eur J Pain, 2009. 13(7): p. 673-81. Chio, C.C., et al., Therapeutic evaluation of etanercept in a model of traumatic brain injury. J Neurochem, 2010. 115(4): p. 921-9. Clark, I.A., L.M. Alleva, and B. Vissel, The roles of TNF in brain dysfunction and disease. Pharmacol Ther, 2010. 128(3): p. 519-48. Dogrul, A., et al., Systemic and spinal administration of etanercept, a tumor necrosis factor alpha inhibitor, blocks tactile allodynia in diabetic mice. Acta Diabetol, 2011. 48(2): p. 135-42. Shen, C.H., et al., Etanercept restores the antinociceptive effect of morphine and suppresses spinal neuroinflammation in morphine-tolerant rats. Anesth Analg, 2011. 112(2): p. 454-9. Watanabe, K., et al., Etanercept attenuates pain-related behavior following compression of the dorsal root ganglion in the rat. Eur Spine J, 2011. 20(11): p. 1877-84. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. Cheong, C.U., et al., Etanercept attenuates traumatic brain injury in rats by reducing brain TNF- alpha contents and by stimulating newly formed neurogenesis. Mediators Inflamm, 2013. 2013: p. 620837. Chio, C.C., et al., Etanercept attenuates traumatic brain injury in rats by reducing early microglial expression of tumor necrosis factor-alpha. BMC Neurosci, 2013. 14(1): p. 33. King, M.D., C.H. Alleyne, Jr., and K.M. Dhandapani, TNF-alpha receptor antagonist, R-7050, improves neurological outcomes following intracerebral hemorrhage in mice. Neurosci Lett, 2013. 542: p. 92-6. Lei, B., et al., Tumor necrosis factor alpha antagonism improves neurological recovery in murine intracerebral hemorrhage. J Neuroinflammation, 2013. 10(1): p. 103. Waters, R.J., et al., Cytokine gene polymorphisms and outcome after traumatic brain injury. J Neurotrauma, 2013. 30(20): p. 1710-6. Coelho, S.C., et al., Etanercept reduces thermal and mechanical orofacial hyperalgesia following inflammation and neuropathic injury. Eur J Pain, 2014. Martuscello, R.T., et al., Increasing TNF levels solely in the rat hippocampus produces persistent pain-like symptoms. Pain, 2012. 153(9): p. 1871-82. Barone, F.C., et al., Tumor necrosis factor-alpha. A mediator of focal ischemic brain injury. Stroke, 1997. 28(6): p. 1233-44. Tobinick, E.L., Targeted etanercept for treatment-refractory pain due to bone metastasis: two case reports. Clin Ther, 2003. 25(8): p. 2279-88. Tobinick, E.L., Targeted etanercept for discogenic neck pain: uncontrolled, openlabel results in two adults. Clin Ther, 2003. 25(4): p. 1211-8. Tobinick, E.L. and S. Britschgi-Davoodifar, Perispinal TNF-alpha inhibition for discogenic pain. Swiss Med Wkly, 2003. 133(11-12): p. 170-7. Tobinick, E. and S. Davoodifar, Efficacy of etanercept delivered by perispinal administration for chronic back and/or neck disc-related pain: a study of clinical observations in 143 patients. Curr Med Res Opin, 2004. 20(7): p. 1075-85. Tobinick, E., et al., TNF-alpha modulation for treatment of Alzheimer's disease: a 6-month pilot study. MedGenMed, 2006. 8(2): p. 25. Tobinick, E., Perispinal etanercept for treatment of Alzheimer's disease. Curr Alzheimer Res, 2007. 4(5): p. 550-2. Tobinick, E., Perispinal etanercept produces rapid improvement in primary progressive aphasia: identification of a novel, rapidly reversible TNF-mediated pathophysiologic mechanism. Medscape J Med, 2008. 10(6): p. 135. Tobinick, E.L. and H. Gross, Rapid improvement in verbal fluency and aphasia following perispinal etanercept in Alzheimer's disease. BMC Neurol, 2008. 8: p. 27. Tobinick, E.L. and H. Gross, Rapid cognitive improvement in Alzheimer's disease following perispinal etanercept administration. J Neuroinflammation, 2008. 5: p. 2. Tobinick, E., Tumour necrosis factor modulation for treatment of Alzheimer's disease: rationale and current evidence. CNS Drugs, 2009. 23(9): p. 713-25. Tobinick, E., Perispinal etanercept for neuroinflammatory disorders. Drug Discov Today, 2009. 14(3-4): p. 168-77. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61. Tobinick, E., Perispinal etanercept: a new therapeutic paradigm in neurology. Expert Rev Neurother, 2010. 10(6): p. 985-1002. Tobinick, E., Rapid improvement of chronic stroke deficits after perispinal etanercept: three consecutive cases. CNS Drugs, 2011. 25(2): p. 145-55. Tobinick, E., et al., Selective TNF inhibition for chronic stroke and traumatic brain injury: an observational study involving 629 consecutive patients treated with perispinal etanercept. CNS Drugs, 2012. 26(12): p. 1051-70. Pappata, S., et al., Thalamic microglial activation in ischemic stroke detected in vivo by PET and [11C]PK1195. Neurology, 2000. 55(7): p. 1052-4. Gentleman, S.M., et al., Long-term intracerebral inflammatory response after traumatic brain injury. Forensic Sci Int, 2004. 146(2-3): p. 97-104. Gerhard, A., et al., Evolution of microglial activation in patients after ischemic stroke: a [11C](R)-PK11195 PET study. Neuroimage, 2005. 24(2): p. 591-5. Folkersma, H., et al., Widespread and prolonged increase in (R)-(11)C-PK11195 binding after traumatic brain injury. J Nucl Med, 2011. 52(8): p. 1235-9. Ramlackhansingh, A.F., et al., Inflammation after trauma: microglial activation and traumatic brain injury. Ann Neurol, 2011. 70(3): p. 374-83. Johnson, V.E., et al., Inflammation and white matter degeneration persist for years after a single traumatic brain injury. Brain, 2013. 136(Pt 1): p. 28-42. Roh, M., et al., Etanercept, a widely used inhibitor of tumor necrosis factor-alpha (TNF-alpha), prevents retinal ganglion cell loss in a rat model of glaucoma. PLoS One, 2012. 7(7): p. e40065. Tancredi, V., et al., Tumor necrosis factor alters synaptic transmission in rat hippocampal slices. Neurosci Lett, 1992. 146(2): p. 176-8. Stellwagen, D. and R.C. Malenka, Synaptic scaling mediated by glial TNF-alpha. Nature, 2006. 440(7087): p. 1054-9. Santello, M. and A. Volterra, TNFalpha in synaptic function: switching gears. Trends Neurosci, 2012. 35(10): p. 638-47. Faingold, C.L., Chapter 7: Network Control Mechanisms: Cellular Inputs, Neuroactive Substances, and Synaptic Changes, in Neuronal Networks in Brain Function, CNS Disorders, and Therapeutics, C.L. Faingold and H. Blumenfeld, Editors. 2014, Elsevier. Bains, J.S. and S.H. Oliet, Glia: they make your memories stick! Trends Neurosci, 2007. 30(8): p. 417-24. Pickering, M., D. Cumiskey, and J.J. O'Connor, Actions of TNF-alpha on glutamatergic synaptic transmission in the central nervous system. Exp Physiol, 2005. 90(5): p. 663-70. Wheeler, D., et al., Tumor necrosis factor-alpha-induced neutral sphingomyelinase-2 modulates synaptic plasticity by controlling the membrane insertion of NMDA receptors. J Neurochem, 2009. 109(5): p. 1237-49. Youn, D.H., H. Wang, and S.J. Jeong, Exogenous tumor necrosis factor-alpha rapidly alters synaptic and sensory transmission in the adult rat spinal cord dorsal horn. J Neurosci Res, 2008. 86(13): p. 2867-75. Beattie, E.C., et al., Control of synaptic strength by glial TNFalpha. Science, 2002. 295(5563): p. 2282-5. 62. 63. 64. 65. 66. 67. 68. 69. 70. 71. 72. 73. 74. 75. 76. 77. 78. 79. Wang, Y., P4-266: Modification of synaptic plasticity by TNF and sphingomyelinase: Implications for cognitive impairment in Alzheimer's disease. Alzheimer's and Dementia, 2008. 4(4 Supplement): p. T749. Nygard, M., et al., Rapid nitric oxide-dependent effects of tumor necrosis factoralpha on suprachiasmatic nuclei neuronal activity. Neuroreport, 2009. 20(2): p. 213-7. Reynolds, J.L., T.A. Ignatowski, and R.N. Spengler, Effect of tumor necrosis factor-alpha on the reciprocal G-protein-induced regulation of norepinephrine release by the alpha2-adrenergic receptor. J Neurosci Res, 2005. 79(6): p. 77987. Siniscalchi, A., et al., Cerebral stroke injury: the role of cytokines and brain inflammation. J Basic Clin Physiol Pharmacol, 2014. Yoshiyama, Y., V.M. Lee, and J.Q. Trojanowski, Therapeutic strategies for tau mediated neurodegeneration. J Neurol Neurosurg Psychiatry, 2013. 84(7): p. 78495. Swardfager, W., et al., Interleukin-17 in post-stroke neurodegeneration. Neurosci Biobehav Rev, 2013. 37(3): p. 436-447. Starke, R.M., et al., Tumor Necrosis Factor-alpha Modulates Cerebral Aneurysm Formation and Rupture. Translational Stroke Research, 2013. 10.1007/s12975013-0287-9. Petzold, A. and A. Girbes, Pain management in neurocritical care. Neurocrit Care, 2013. 19(2): p. 232-56. Kaufman, E.L. and A. Carl, Biochemistry of Back Pain. The Open Spine Journal, 2013. 5: p. 12-18. Gajewski, P.D., et al., The functional tumor necrosis factor-alpha (308A/G) polymorphism modulates attentional selection in elderly individuals. Neurobiol Aging, 2013. 34(11): p. 2694 e1-2694 e12. Cunningham, E.L. and A.P. Passmore, Drug development in dementia. Maturitas, 2013. 76(3): p. 260-6. Clark, I.A. and B. Vissel, Treatment implications of the altered cytokine-insulin axis in neurodegenerative disease. Biochem Pharmacol, 2013. 86(7): p. 862-71. Camara, M.L., et al., TNF-alpha and its receptors modulate complex behaviours and neurotrophins in transgenic mice. Psychoneuroendocrinology, 2013. 38(12): p. 3102-14. Brambilla, L., F. Martorana, and D. Rossi, Astrocyte signaling and neurodegeneration: New insights into CNS disorders. Prion, 2013. 7(1): p. 28-36. Blaylock, R.L., Immunology primer for neurosurgeons and neurologists part 2: Innate brain immunity. Surg Neurol Int, 2013. 4: p. 118. Bai, L., et al., Elevated Plasma Levels of Soluble TNFRs and TACE Activity in Alzheimer's Disease Patients of Northern Han Chinese Descent. Curr Alzheimer Res, 2013. 10(1): p. 57-62. DanaAlliance, The 2007 Progress Report on Brain Research. Progress Report on Brain Research 2007, New York: Dana Press. Goldberg, R.J., International conference on Alzheimer's disease 2008: Summary of new research: perispinal etanercept improves primary progressive aphasia. Brown University Geriatric Psychopharmacology Update, 2008. 12(10): p. 4. 80. 81. 82. 83. 84. 85. 86. 87. 88. 89. 90. 91. 92. 93. 94. 95. 96. Ignatowski, T.A. and R.N. Spengler, II. Cytokines in the Brain, B. Cytokines in Brain Physiology: Cytokines in Synaptic Function, in NeuroImmune Biology, Vol. 6: Cytokines and the Brain, C. Phelps and E. Korneva, Editors. 2008, Elsevier: Amsterdam, The Netherlands. p. 111-144. Di Bona, D., et al., Systematic review by meta-analyses on the possible role of TNF-alpha polymorphisms in association with Alzheimer's disease. Brain Res Rev, 2009. 61(2): p. 60-8. Hu, N.W., et al., GluN2B subunit-containing NMDA receptor antagonists prevent A{beta}-mediated synaptic plasticity disruption in vivo. Proc Natl Acad Sci U S A, 2009. Beattie, M.S., A.R. Ferguson, and J.C. Bresnahan, AMPA-receptor trafficking and injury-induced cell death. Eur J Neurosci, 2010. 32(2): p. 290-7. Buchhave, P., et al., Soluble TNF receptors are associated with Abeta metabolism and conversion to dementia in subjects with mild cognitive impairment. Neurobiol Aging, 2010. 31(11): p. 1877-84. Labbate, L.A., Drugs for the Treatment of Dementia, in Handbook of Psychiatric Drug Therapy, 6th Edition, L.A. Labbate, Editor. 2010, Wolters Kluwer Health/Lippincott Williams & Wilkins: Philadelphia. p. 254-264. McNaull, B.B., et al., Inflammation and anti-inflammatory strategies for Alzheimer's disease--a mini-review. Gerontology, 2010. 56(1): p. 3-14. Shubayev, V.I., K. Kato, and R.R. Myers, Chapter 8: Cytokines in Pain, in Translational Pain Research: From Mouse to Man, L. Kruger and A.R. Light, Editors. 2010, CRC Press. Cavanagh, C., et al., Early molecular and synaptic dysfunctions in the prodromal stages of Alzheimer's disease: focus on TNF-alpha and IL-1Beta. Future Neurology, 2011. 6(6): p. 757-769. Esposito, E. and S. Cuzzocrea, Anti-TNF therapy in the injured spinal cord. Trends Pharmacol Sci, 2011. 32(2): p. 107-15. Frankola, K.A., et al., Targeting TNF-alpha to Elucidate and Ameliorate Neuroinflammation in Neurodegenerative Diseases. CNS Neurol Disord Drug Targets, 2011. 10(3): p. 391-403. Jiang, H., et al., Elevated CSF levels of TACE activity and soluble TNF receptors in subjects with mild cognitive impairment and patients with Alzheimer's disease. Molecular neurodegeneration, 2011. 6(1): p. 69. Rossi, D., F. Martorana, and L. Brambilla, Implications of gliotransmission for the pharmacotherapy of CNS disorders. CNS Drugs, 2011. 25(8): p. 641-58. Shi, J.Q., et al., Anti-TNF-alpha reduces amyloid plaques and tau phosphorylation and induces CD11c-positive dendritic-like cell in the APP/PS1 transgenic mouse brains. Brain Res, 2011. 1368: p. 239-47. Watanabe, K., et al., Etanercept attenuates pain-related behavior following compression of the dorsal root ganglion in the rat. Eur Spine J, 2011. Butchart, J. and C. Holmes, Systemic and Central Immunity in Alzheimer's Disease: Therapeutic Implications. CNS Neuroscience & Therapeutics, 2012. Clark, I., New hope for survivors of stroke and traumatic brain injury. CNS Drugs, 2012. 26(12): p. 1071-2. 97. 98. 99. 100. 101. 102. 103. 104. 105. 106. 107. 108. 109. 110. 111. Clark, I., et al., Tumor necrosis factor-induced cerebral insulin resistance in Alzheimer's disease links numerous treatment rationales. Pharmacol Rev, 2012. 64(4): p. 1004-26. Maudsley, S. and W. Chadwick, Progressive and unconventional pharmacotherapeutic approaches to Alzheimer's disease therapy. Curr Alzheimer Res, 2012. 9(1): p. 1-4. Ooi, L. and e. al., New Drugs Under Development for Alzheimer's Disease, in Advances in Alzheimer's Disease Management, S. Gauthier and P. Rosa-Neto, Editors. 2012. p. 58-67. Santello, M. and A. Volterra, TNF-alpha in synaptic function: switching gears. Trends Neurosci, 2012. 35(10): p. 638-47. Williams, M. and J.T. Coyle, Chapter 7: Historical perspectives on the discovery and development of drugs to treat neurological disorders, in Translational Neuroscience: Applications in Psychiatry, Neurology, and Neurodevelopmental Disorders, J.E. Barrett, J.T. Coyle, and M. Williams, Editors. 2012, Cambridge University Press: Cambridge, England. p. 129-148. Petzold, A. and A. Girbes, Pain Management in Neurocritical Care. Neurocrit Care, 2013. Watt, D., D.E. Budding, and L.F. Koziol, Chapter 17- Alzheimer's disease, in The Neuropsychology of Psychopathology, C.A. Noggle and R.S. Dean, Editors. 2013, Springer Publishing Company: New York, NY. p. 389-404. Cohen, S.P., et al., Randomized, double-blind, placebo-controlled, dose-response, and preclinical safety study of transforaminal epidural etanercept for the treatment of sciatica. Anesthesiology, 2009. 110(5): p. 1116-26. Freeman, B.J., et al., Randomized, Double-blind, Placebo-Controlled, Trial of Transforaminal Epidural Etanercept for the Treatment of Symptomatic Lumbar Disc Herniation. Spine (Phila Pa 1976), 2013. 38(23): p. 1986-94. Ohtori, S., et al., Epidural administration of spinal nerves with the tumor necrosis factor-alpha inhibitor, etanercept, compared with dexamethasone for treatment of sciatica in patients with lumbar spinal stenosis: a prospective randomized study. Spine (Phila Pa 1976), 2012. 37(6): p. 439-44. Sainoh, T., et al., Intradiscal Administration of Tumor Necrosis Factor-Alpha Inhibitor, Etanercept, Clinically Improves Intractable Discogenic Low Back Pain: A Prospective Randomized Study, in International Society for the Study of the Lumbar Spine 40th Annual Meeting. 2013: Scottsdale, Arizona. Gray, H. and T. Holmes, Anatomy, descriptive and surgical. 4th ed. 1866, London: Longmans, Green, and co. Groen, R.J., et al., Anatomical and pathological considerations in percutaneous vertebroplasty and kyphoplasty: a reappraisal of the vertebral venous system. Spine (Phila Pa 1976), 2004. 29(13): p. 1465-71. Netter, F.H., The Netter collection of medical illustrations: Nervous system Part II-- Spinal cord and peripheral motor and sensory systems. 2nd ed, ed. H.R. Jones, et al. Vol. 7. 2013, Philadelphia, PA: Elsevier Saunders. Tobinick, E. and C.P. Vega, The cerebrospinal venous system: anatomy, physiology, and clinical implications. MedGenMed, 2006. 8(1): p. 53. 112. Tobinick, E.L., K. Chen, and X. Chen, Rapid intracerebroventricular delivery of Cu-DOTA-etanercept after peripheral administration demonstrated by PET imaging. BMC Res Notes, 2009. 2: p. 28.