Deletion of the p53 tumor suppressor gene improves neuromotor function but does not attenuate regional neuronal cell loss following experimental brain trauma in mice.
(2010) In Journal of Neuroscience Research 88(15). p.3414-3423- Abstract
- Deletion of the tumor suppressor gene p53 has been shown to improve the outcome in experimental models of focal cerebral ischemia and kainate-induced seizures. To evaluate the potential role of p53 in traumatic brain injury, genetically modified mice lacking a functional p53 gene (p53(-/-), n = 9) and their wild-type littermates (p53(+/+), n = 9) were anesthetized and subjected to controlled cortical impact (CCI) experimental brain trauma. After brain injury, neuromotor function was assessed by using composite neuroscore and rotarod tests. By 7 days posttrauma, p53(-/-) mice exhibited significantly improved neuromotor function, in the composite neuroscore (P = 0.002) as well as in two of three individual tests, when compared with... (More)
- Deletion of the tumor suppressor gene p53 has been shown to improve the outcome in experimental models of focal cerebral ischemia and kainate-induced seizures. To evaluate the potential role of p53 in traumatic brain injury, genetically modified mice lacking a functional p53 gene (p53(-/-), n = 9) and their wild-type littermates (p53(+/+), n = 9) were anesthetized and subjected to controlled cortical impact (CCI) experimental brain trauma. After brain injury, neuromotor function was assessed by using composite neuroscore and rotarod tests. By 7 days posttrauma, p53(-/-) mice exhibited significantly improved neuromotor function, in the composite neuroscore (P = 0.002) as well as in two of three individual tests, when compared with brain-injured p53(+/+) animals. CCI resulted in the formation of a cortical cavity (mean volume = 6.1 mm(3)) 7 days postinjury in p53(+/+) as well as p53(-/-) mice. No difference in lesion volume was detected between the two genotypes (P = 0.95). Although significant cell loss was detected in the ipsilateral hippocampus and thalamus of brain-injured animals, no differences between p53(+/+) and p53(-/-) mice were detected. Although our results suggest that lack of the p53 gene results in augmented recovery of neuromotor function following experimental brain trauma, they do not support a role for p53 acting as a mediator of neuronal death in this context, underscoring the complexity of its role in the injured brain. (Less)
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https://lup.lub.lu.se/record/1711426
- author
- Tomasevic, Gregor LU ; Raghupathi, Ramesh ; Scherbel, Uwe ; Wieloch, Tadeusz LU and McIntosh, Tracy K
- organization
- publishing date
- 2010
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Neuroscience Research
- volume
- 88
- issue
- 15
- pages
- 3414 - 3423
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- wos:000283609900019
- pmid:20890990
- scopus:78649396818
- pmid:20890990
- ISSN
- 1097-4547
- DOI
- 10.1002/jnr.22491
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Laboratory for Experimental Brain Research (013041000), Neurosurgery (013026000)
- id
- cd7378ed-be0e-4f8e-a79c-6918cf01572c (old id 1711426)
- alternative location
- http://www.ncbi.nlm.nih.gov/pubmed/20890990?dopt=Abstract
- date added to LUP
- 2016-04-04 09:19:06
- date last changed
- 2022-01-29 17:16:59
@article{cd7378ed-be0e-4f8e-a79c-6918cf01572c,
abstract = {{Deletion of the tumor suppressor gene p53 has been shown to improve the outcome in experimental models of focal cerebral ischemia and kainate-induced seizures. To evaluate the potential role of p53 in traumatic brain injury, genetically modified mice lacking a functional p53 gene (p53(-/-), n = 9) and their wild-type littermates (p53(+/+), n = 9) were anesthetized and subjected to controlled cortical impact (CCI) experimental brain trauma. After brain injury, neuromotor function was assessed by using composite neuroscore and rotarod tests. By 7 days posttrauma, p53(-/-) mice exhibited significantly improved neuromotor function, in the composite neuroscore (P = 0.002) as well as in two of three individual tests, when compared with brain-injured p53(+/+) animals. CCI resulted in the formation of a cortical cavity (mean volume = 6.1 mm(3)) 7 days postinjury in p53(+/+) as well as p53(-/-) mice. No difference in lesion volume was detected between the two genotypes (P = 0.95). Although significant cell loss was detected in the ipsilateral hippocampus and thalamus of brain-injured animals, no differences between p53(+/+) and p53(-/-) mice were detected. Although our results suggest that lack of the p53 gene results in augmented recovery of neuromotor function following experimental brain trauma, they do not support a role for p53 acting as a mediator of neuronal death in this context, underscoring the complexity of its role in the injured brain.}},
author = {{Tomasevic, Gregor and Raghupathi, Ramesh and Scherbel, Uwe and Wieloch, Tadeusz and McIntosh, Tracy K}},
issn = {{1097-4547}},
language = {{eng}},
number = {{15}},
pages = {{3414--3423}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Journal of Neuroscience Research}},
title = {{Deletion of the p53 tumor suppressor gene improves neuromotor function but does not attenuate regional neuronal cell loss following experimental brain trauma in mice.}},
url = {{http://dx.doi.org/10.1002/jnr.22491}},
doi = {{10.1002/jnr.22491}},
volume = {{88}},
year = {{2010}},
}