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Robert E. Ayer and Alexander Zouros

Encephalocraniocutaneous lipomatosis (ECCL) is a rare neurocutaneous syndrome whose hallmark lesions are benign lipomas of the brain and spinal cord. The authors present a case of a male infant with ECCL who had extensive brainstem and spinal cord lipomas. The management of this patient's hydrocephalus, cervicomedullary compression, tethered cord, and scoliosis over the course of his first 2 years of life is described. This case report and review of the literature is presented to provide a synopsis of the problems likely to be encountered by neurosurgeons who treat patients with this syndrome.

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Robert E. Ayer, Nazanin Jafarian, Wanqiu Chen, Richard L. Applegate II, Austin R. T. Colohan and John H. Zhang

Object

Intracranial surgery causes cortical injury from incisions, hemorrhage, retraction, and electrocautery. The term “surgical brain injury” (SBI) has been developed to categorize this injury inherent to the procedure. Neuroinflammation plays a significant role in SBI. Traditional antiinflammatory therapies are often limited by their immunosuppressive side effects and poor CNS penetration. This study uses mucosal tolerance to develop an immune system that is tolerant to brain myelin basic protein (MBP) so that inflammation can be suppressed in a timely and site-specific manner following surgical disruption of the blood-brain barrier.

Methods

A standard SBI model using CD57 mice was used. Nasopharyngeal mucosa was exposed to vehicle, ovalbumin, or MBP to develop mucosal tolerance to these antigens. Immunological tolerance to MBP was confirmed in vivo through hypersensitivity testing. Neurological scores, cerebral edema, and interleukin (IL)–1β and transforming growth factor (TGF)–β1 cytokine levels were measured 48 hours postoperatively.

Results

Hypersensitivity testing confirmed the development of immune tolerance to MBP. Myelin basic protein–tolerant mice demonstrated reduced neurological injury, less cerebral edema, decreased levels of IL-1β, and increased levels of TGFβ1 following SBI.

Conclusions

Developing preoperative immunological tolerance to brain antigens through mucosal tolerance provides neuroprotection, reduces brain edema, and modulates neuroinflammation following SBI.