NDLI: Multiple Intracranial Metastatic Tumor Case Report and Aquaporin Water Channel-Related Research

Content Provider	Springer Nature Link
Author	Zhao, Bin Wang, Hailiang Wang, Xiaoke Zhao, Hongmei Liu, Jun
Copyright Year	2014
Abstract	This case report deals with multiple intracranial metastatic tumors and studies of expression and regulation characteristics of aquaporins (AQPs) of cerebellar metastatic tumor and brain tissue surrounding tumor. In this work, we try to understand the role of abnormal expression of AQPs in formation and elimination of brain edema and provide new ideas for the treatment of brain edema induced by tumor. The work involves resection of intracranial occupying lesions to get cerebellar metastatic tumor organization. Total RNA was extracted, RT-PCR was done, and immunohistochemical staining was done to study the expression and regulation characteristics of AQPs. We found that AQP4 had a high expression in the peritumoral brain tissue and no expression in the center of brain metastasis tumor organization. Around the tumor tissue, the AQP4 staining was junior in the more distant region from tumor and it added significantly in close to the tumor tissue region. It demonstrated that the AQP4 expression was upregulated, obviously with the distance drawing near gradually to tumor tissue. In addition, stained AQP1 was not observed on cerebellar metastatic tumor and peritumoral brain microvascular endothelial cells. The phenomenon that AQP4 had an increased expression in the surrounding region of cerebellar metastatic tumor and, moreover, increased significantly in the region next to the cerebellar metastatic tumor tightly is probably related to the formation of peritumoral brain edema and plays an important role in cytotoxic brain edema mechanism. AQP1 was not expressed on cerebellar metastatic tumor and peritumoral brain tissue microvascular endothelial cells, and this may be an important factor that the peritumoral interstitial brain edema is removed ineffectively to cause ‘small tumor, big edema.’
Starting Page	1015
Ending Page	1021
Page Count	7
File Format	PDF
ISSN	10859195
Journal	Cell Biochemistry and Biophysics
Volume Number	71
Issue Number	2
e-ISSN	15590283
Language	English
Publisher	Springer US
Publisher Date	2014-10-24
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aquaporin water channel (AQP) Cerebellar metastatic tumor Brain edema Gene expression Immunohistochemistry Biochemistry Pharmacology/Toxicology Biotechnology Cell Biology Biophysics and Biological Physics
Content Type	Text
Resource Type	Article
Subject	Cell Biology Medicine Biochemistry Biophysics

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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