Quantitative Analysis of MAP2 Immunoreactivity in Human Neocortex of Three Patients Surviving After Brain Ischemia: Dedicated to Dr. Anders Hamberger

Authors: Akulinin, Victor A.1; Dahlstrom, Annica2

Source: Neurochemical Research, Volume 28, Number 2, February 2003 , pp. 373-378(6)

Publisher: Springer

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Transient global ischemia caused by cardiac arrest results in lesions that involve all brain structures. The aim of this study was to investigate the distribution of MAP2 immunoreactivity in neurons in the brain of patients surviving for various times after an ischemic incident, using confocal laser scanning microscopy. We performed a quantitative analysis of the distribution and density of MAP2-positive structures in human neocortical areas after survival times of 1 week, 3 months, and 1 year after the cardiac arrest. Three important observations were made in the present study: (i) in all human brain areas investigated (motor, temporal, frontal, and visual cortex) a decrease of MAP2 immunoreactivity was found; (ii) in all studied areas the most significant decrease in MAP2 was found in layers II–III, compared with layers V–VII; (iii) the decrease of MAP2 immunoreactivity in layers II–III was related to the duration of the postischemic period. The maximal decrease, by 66.3% (P < .05), in MAP2-positive pyramidal neurons, was observed in layers II–III in the motor cortex after 1 year of survival after cardiac arrest.

Keywords: Human neocortex; MAP2; cardiac arrest; confocal laser scanning microscopy; ischemia

Document Type: Research Article

DOI: http://dx.doi.org/10.1023/A:1022401922669

Affiliations: 1: Department of Histology, Embryology and Cell Biology, Omsk State Medical Academy, Lenin 1 Omsk 644099, Russia. akulinin@omsk-osma.ru, Email: akulinin@omsk-osma.ru 2: Department of Anatomy and Cell Biology, Goteborg University, Sweden

Publication date: February 1, 2003

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