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. 2006 Apr 5;12(3):329–336. doi: 10.1111/j.1750-3639.2002.tb00447.x

Neuronal Apoptosis in the Dentate Gyrus in Humans with Subarachnoid Hemorrhage and Cerebral Hypoxia

Roland Nau MD 1,✉, Sabine Haase 1, Stephanie Bunkowski 1, Wolfgang Brück MD 2
PMCID: PMC8095980  PMID: 12146801

Abstract

Apoptosis of dentate granule cells is a typical feature of several animal models of disease. In 20 autopsy cases of subarachnoid hemorrhage (SAH) and global cerebral hypoxia caused by protracted shock or respiratory failure, we evaluated by light microscopy and in situ tailing whether this pattern of neuronal damage also occurs in humans. In subarachnoid hemorrhage, 4.0/mm2 (0–13.0/mm2) a poptotic neurons were observed in the dentate gyrus, in cerebral hypoxia 3.6/mm2 (0–19.9/mm2) (p>0.05), and in 10 aged‐matched control cases dying rapidly from non‐neurological diseases 0/mm2 (0–0/mm2) (median [range]) (p<0.001 versus SAH and hypoxia). Neuronal apoptosis in the dentate gyrus was most frequent, when death occurred later than 24 hours and less than 11 days after disease onset. Neuronal damage in the hippocampus was always necrotic. It was more severe in hypoxia than in SAH (median neuronal damage score 3 [range: 0–3] versus 0 [0–3], p<0.001).

Apoptosis appears to be the predominant mechanism of death in dentate granule cells irrespective of the underlying disease, whereas neuronal death in the hippocampus generally is of necrotic morphology.

Full Text

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(For a perspective on cell death mechanisms, see article by Graeber & Moran, p. 385)

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