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pH measurement as quality control on human postmortem brain tissue: A Study of the BrainNet Europe Consortium.
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2009 (English)In: Neuropathology and Applied Neurobiology, ISSN 0305-1846, E-ISSN 1365-2990, Vol. 35, no 3, 329-337 p.Article in journal (Refereed) Published
Abstract [en]

Aims: Most brain diseases are complex entities. Although animal models or cell culture experiments mimic some disease aspects, human postmortem brain tissue remains essential to advance our understanding of brain diseases using biochemical and molecular techniques. Postmortem artifacts must be properly understood, standardized, and either eliminated or factored into such experiments. Here we examine the influence of several pre- and postmortem factors on pH, and discuss the role of pH as a biochemical marker for brain tissue quality. Methods: We assessed brain tissue pH in 339 samples from 116 brains provided by 8 different European and 2 Australian brain bank centres. We correlated brain pH with tissue source, postmortem delay, age, gender, freezing method, storage duration, agonal state, or and brain ischaemia. Results: Our results revealed that only prolonged agonal state and ischaemic brain damage influenced brain tissue pH next to repeated freeze/thaw cycles. Conclusions: pH measurement in brain tissue is a good indicator of premortem events in brain tissue and it signals limitations for postmortem investigations.

Place, publisher, year, edition, pages
2009. Vol. 35, no 3, 329-337 p.
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Clinical Laboratory Medicine
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URN: urn:nbn:se:uu:diva-171347DOI: 10.1111/j.1365-2990.2008.01003a.xPubMedID: 19055525OAI: oai:DiVA.org:uu-171347DiVA: diva2:510633
Available from: 2012-03-17 Created: 2012-03-17 Last updated: 2016-05-13

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Alafuzoff, Irina
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