NDLI: Transcortical Alterations in Na+-K+ ATPase and Microtubule-Associated Proteins Immunoreactivity in the Rat Cortical Atrophy Model Induced by Hypoxic Ischemia

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Transcortical Alterations in Na+-K+ ATPase and Microtubule-Associated Proteins Immunoreactivity in the Rat Cortical Atrophy Model Induced by Hypoxic Ischemia

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Transcortical Alterations in Na+-K+ ATPase and Microtubule-Associated Proteins Immunoreactivity in the Rat Cortical Atrophy Model Induced by Hypoxic Ischemia

Content Provider	PubMed Central
Author	Suh, Jun-gyo An, Sung-jin Park, Jae-bong Ryoo, Zae-young Lee, Jeong Woong Oh, Yang-seok Won, Moo Ho Kang, Tae-cheon
Copyright Year	2002
Abstract	To identify the chronological transcorticalchange in the contralateral hemispherefollowing ischemic insults, we investigated thechanges in microtubule associated protein(MAP) and Na+-K+ ATPase expressions in theperi-infarct zone and contralateral hemisphere,including the hippocampus. Two days afterhypoxic ischemia, Na+-K+ ATPase immunoreactivitywas significantly enhanced in thecontralateral cortex and was maintained up to 7days after ischemia, whereas Na+-K+ ATPase immunoreactivity in the peri- and infarct zoneswas unaffected by hypoxic ischemia. In contrast,2 to 7 days after ischemia, MAP1A and MAP2immunoreactivity in the ipsi- and contralateralcortex significantly decreased, whereas in layerV, MAP1 immunoreactivity obviously accumulatedin the neurons and their processes. In thehippocampus, 2 days after insults both MAP1Aand MAP2 immunoreactivity was significantlyreduced within the ipsi- and contralateralhippocampus. In the contralateral hippocampus,however, the distribution of MAP2 immunoreactivityrecovered to the sham level 7 daysafter ischemia, whereas MAP1A immunoreactiveaxons remained 2 months afterischemia. The results suggest that the unilateralelevation of Na+-K+ ATPase immunoreactivityreflects elevated neuronal activity. In addition,this asymmetric hyperexcitability might play animportant role in the recovery or thereorganization of the brain, accompanied bytranscortical changes in MAPs expression.
Related Links	http://dx.doi.org/10.1155/np.2002.135
Ending Page	146
Page Count	12
Starting Page	135
File Format	PDF
ISSN	20905904
e-ISSN	16875443
Journal	Neural Plasticity
Issue Number	3
Volume Number	9
Language	English
Publisher	Hindawi Publishing Corporation
Publisher Date	2002-01-01
Access Restriction	Open
Rights Holder	Hindawi Publishing Corporation
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Neurology Neurology (clinical)

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