PMID: 9165490Apr 1, 1997Paper

The effect of postmortem delay on the distribution of microtubule-associated proteins tau, MAP2, and MAP5 in the rat

Molecular and Chemical Neuropathology
E A IrvingD Dewar

Abstract

Breakdown or disruption of the cytoskeleton has been implicated in the neurodegenerative processes of a variety of diseases, including Alzheimer disease (AD) and stroke. Studies of such diseases in the human involve the use of postmortem brain tissue. Postmortem delay may vary considerably from a few hours to a few days, and within this period, a degree of cytoskeletal breakdown may occur. It is therefore crucial to examine alterations occurring in the cytoskeleton as a result of postmortem delay and subtract these from those caused by the disease. In this study, the distribution of tau, MAP2, and MAP5 immunohistochemistry was examined following postmortem intervals of 0-72 h in the rat cerebral cortex, corpus callosum, caudate nucleus, and hippocampus. Each microtubule-associated protein (MAP) underwent unique changes that were dependent both on postmortem interval and the brain region examined. Following long postmortem delays, some of the changes in these proteins were similar to those seen in rodent models of cerebral ischemia. These results demonstrate that MAPs are not stable during postmortem delay in the rat. Therefore, caution must be exercised when interpreting changes in MAPs in human postmortem tissue, especially in...Continue Reading

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Citations

Aug 26, 2006·Forensic Science International : Synergy·Ellen GelpiHerbert Budka
Oct 19, 2006·Brain Research·Ana D StanCarol A Tamminga
Apr 11, 2008·Journal of Neuroscience Methods·Barbara E LingwoodPaul B Colditz
Jan 30, 2004·Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism·Kazuhiko Nishino, Thaddeus S Nowak
May 8, 2001·Journal of Neuroscience Research·J J VielG J Brewer
Apr 3, 2007·Neurochemical Research·Gulyeter SerbestKathryn E Saatman

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