alexa Increased expression of Aquaporin-4 and its correlation with contrast enhancement and perilesional edema in brain tumors.
Neurology

Neurology

Journal of Spine

Author(s): Dua RK, Devi BI, Yasha TC

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Abstract INTRODUCTION: Aquaporins and astrocytes are important in maintaining water hemostasis in brain. Upregulation of AQP-4 has been described in conditions associated with brain edema. AIMS: To study the expression of aquaporin-4 in brain tumors and its correlation with contrast enhancement and perilesional edema. MATERIAL AND METHODS: 30 cases of brain tumors, both benign and malignant were included in the study to look for expression of AQP-4. RESULTS: AQP-4 expression was increased in brain tumors compared to normal brain but distribution and intensity of expression depend upon the type of tumor. A trend toward increased AQP-4 expression in enhancing lesions with perilesional edema was noticed. CONCLUSION: AQP-4 expression was seen in tumor tissue and perilesional reactive astrocytes in primary brain tumors, however only perilesional astrocytes showed positivity in secondary brain tumors. AQP-4 could be playing a role in alteration of blood-brain barrier leading to contrast enhancement and perilesional edema. Increased knowledge of Aquaporins may open new targeted therapy for brain edema. This article was published in Br J Neurosurg and referenced in Journal of Spine

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