The possible role of hypoxia in the formation of axonal bulbs.

Abstract:

AIMS:To assess the possible role of hypoxia in the formation of axonal bulbs. METHODS:Study material comprised sections from 28 brains showing evidence of cerebral hypoxia with no history of head injury, four with a history of head trauma but no evidence of hypoxic change, eight with a history of head trauma and hypoxic change, and four from control brains originally described as "diffuse axonal injury." These were subjected to microwave antigen retrieval and immunohistochemistry using monoclonal antibodies to beta amyloid precursor protein (beta APP), glial fibrillary acid protein (GFAP), and CD68-PGM1. RESULTS:Positive staining for beta APP was seen in all four controls, all four cases of head injury only, seven of eight cases of head injury and hypoxic changes, and 12 of 28 cases of hypoxia without history of head injury; 22 of 25 cases who had been ventilated showed positive staining. The majority of cases showed evidence of cerebral swelling. CONCLUSIONS:Axonal bulbs staining positively for beta APP may occur in the presence of hypoxia and in the absence of head injury. The role of hypoxia, raised intracranial pressure, oedema, shift effects, and ventilatory support in the formation of axonal bulbs is discussed. The presence of axonal bulbs cannot necessarily be attributed to shearing forces alone.

journal_name

J Clin Pathol

authors

Kaur B,Rutty GN,Timperley WR

doi

10.1136/jcp.52.3.203

keywords:

subject

Has Abstract

pub_date

1999-03-01 00:00:00

pages

203-9

issue

3

eissn

0021-9746

issn

1472-4146

journal_volume

52

pub_type

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