Loeffler, Jutta M.; Ringer, Ralph; Hablützel, Martin; Täuber, Martin G.; Leib, Stephen L. (2001). The free radical scavenger alpha-phenyl-tert-butyl nitrone aggravates hippocampal apoptosis and learning deficits in experimental pneumococcal meningitis. Journal of infectious diseases, 183(2), pp. 247-252. Cary, N.C.: The University of Chicago Press 10.1086/317921
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The effect of adjuvant therapy with the radical scavenger alpha-phenyl-tert-butyl nitrone (PBN; 100 mg/kg given intraperitoneally every 8 h for 5 days) on brain injury and learning function was evaluated in an infant rat model of pneumococcal meningitis. Meningitis led to cortical necrotic injury (median, 3.97% [range, 0%-38.9%] of the cortex), which was reduced to a median of 0% (range, 0%-30.9%) of the cortex (P<.001) by PBN. However, neuronal apoptosis in the hippocampal dentate gyrus was increased by PBN, compared with that by saline (median score, 1.15 [range, 0.04-1.73] vs. 0.31 [range, 0-0.92]; P<.001). Learning function 3 weeks after cured infection, as assessed by the Morris water maze, was decreased, compared with that in uninfected control animals (P<.001). Parallel to the increase in hippocampal apoptosis, PBN further impaired learning in infected animals, compared with that in saline-treated animals (P<.02). These results contrast with those of an earlier study, in which PBN reduced cortical and hippocampal neuronal injury in group B streptococcal meningitis. Thus, in pneumococcal meningitis, antioxidant therapy with PBN aggravates hippocampal injury and learning deficits.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > Service Sector > Institute for Infectious Diseases |
UniBE Contributor: |
Täuber, Martin G., Leib, Stephen |
Subjects: |
500 Science > 570 Life sciences; biology 600 Technology > 610 Medicine & health |
ISSN: |
0022-1899 |
ISBN: |
11110643 |
Publisher: |
The University of Chicago Press |
Language: |
English |
Submitter: |
Factscience Import |
Date Deposited: |
04 Oct 2013 15:00 |
Last Modified: |
05 Dec 2022 14:18 |
Publisher DOI: |
10.1086/317921 |
PubMed ID: |
11110643 |
Web of Science ID: |
000165987700011 |
BORIS DOI: |
10.7892/boris.25744 |
URI: |
https://boris.unibe.ch/id/eprint/25744 (FactScience: 60856) |
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