Targeting classical but not neurogenic inflammation reduces peritumoral oedema in secondary brain tumours
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- 作者：Kate M. Lewis ; Elizabeth Harford-Wright ; Robert Vink ; Mounir N. Ghabriel
- 关键词：Brain metastases ; Cerebral oedema ; Substance P ; NK1 antagonist ; Blood&ndash ; brain barrier ; Dexamethasone
- 刊名：Journal of Neuroimmunology
- 出版年：2012
- 出版时间：15 September, 2012
- 年：2012
- 卷：250
- 期：1-2
- 页码：59-65
- 全文大小：908 K
文摘
Dexamethasone, the standard treatment for peritumoral brain oedema, inhibits classical inflammation. Neurogenic inflammation, which acts via substance P (SP), has been implicated in vasogenic oedema in animal models of CNS injury. SP is elevated within and outside CNS tumours. This study investigated the efficacy of NK1 receptor antagonists, which block SP, compared with dexamethasone treatment, in a rat model of tumorigenesis. Dexamethasone reverted normal brain water content and reduced Evans blue and albumin extravasation, while NK1 antagonists did not ameliorate oedema formation. We conclude that classical inflammation rather than neurogenic inflammation drives peritumoral oedema in this brain tumour model.