Advanced

The tumor suppressor p53 and its response gene p21(WAF1/Cip1) are not markers of neuronal death following transient global cerebral ischemia

Tomasevic, Gregor LU ; Kamme, F. LU ; Stubberöd, P.; Wieloch, M. and Wieloch, Tadeusz LU (1999) In Neuroscience 90(3). p.781-792
Abstract

The tumor suppressor protein p53 is implicated in cell cycle arrest and DNA repair as well as in apoptosis. In the CNS, p53 has been associated with neuronal cell death following various insults, including cerebral ischemia. We investigated the expression of p53 messenger RNA and protein, and the messenger RNA expression of the p53-responsive gene p21(WAF1/Cip1), in specific hippocampal regions following 15 min of normothermic and neuroprotective hypothermic (33°C) global forebrain ischemia in the rat. Both p53 and p21(WAF1/Cip1) messenger RNAs were transiently induced in ischemia resistant regions following normo- and hypothermic ischemia. In the ischemia sensitive CA1 region, p53 and p21(WAF1/Cip1) messenger RNAs were up- regulated... (More)

The tumor suppressor protein p53 is implicated in cell cycle arrest and DNA repair as well as in apoptosis. In the CNS, p53 has been associated with neuronal cell death following various insults, including cerebral ischemia. We investigated the expression of p53 messenger RNA and protein, and the messenger RNA expression of the p53-responsive gene p21(WAF1/Cip1), in specific hippocampal regions following 15 min of normothermic and neuroprotective hypothermic (33°C) global forebrain ischemia in the rat. Both p53 and p21(WAF1/Cip1) messenger RNAs were transiently induced in ischemia resistant regions following normo- and hypothermic ischemia. In the ischemia sensitive CA1 region, p53 and p21(WAF1/Cip1) messenger RNAs were up- regulated throughout reperfusion following the normothermic insult. The p53 protein levels increased following the insult, most markedly in ischemia- resistant CA3 neurons after normothermic ischemia, and in the CA1 neurons following hypothermic ischemia. Concomitantly, the protein was translocated to nuclei. These findings indicate that p53 and p21(WAF1/Cip1) are not markers of neuronal death following global cerebral ischemia. Their rapid and transient induction correlates with cell survival, and suggests a possible role in DNA repair.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
keywords
Hippocampus, Hypothermia, Immunohistochemistry, In situ hybridization, p53, Rat
in
Neuroscience
volume
90
issue
3
pages
781 - 792
publisher
Elsevier
external identifiers
  • Scopus:0032893772
ISSN
0306-4522
DOI
10.1016/S0306-4522(98)00484-9
language
English
LU publication?
yes
id
f166cdbf-fd96-4dc1-822e-1b0f1ad1aba9
date added to LUP
2016-10-05 16:03:13
date last changed
2016-11-29 10:38:56
@misc{f166cdbf-fd96-4dc1-822e-1b0f1ad1aba9,
  abstract     = {<p>The tumor suppressor protein p53 is implicated in cell cycle arrest and DNA repair as well as in apoptosis. In the CNS, p53 has been associated with neuronal cell death following various insults, including cerebral ischemia. We investigated the expression of p53 messenger RNA and protein, and the messenger RNA expression of the p53-responsive gene p21(WAF1/Cip1), in specific hippocampal regions following 15 min of normothermic and neuroprotective hypothermic (33°C) global forebrain ischemia in the rat. Both p53 and p21(WAF1/Cip1) messenger RNAs were transiently induced in ischemia resistant regions following normo- and hypothermic ischemia. In the ischemia sensitive CA1 region, p53 and p21(WAF1/Cip1) messenger RNAs were up- regulated throughout reperfusion following the normothermic insult. The p53 protein levels increased following the insult, most markedly in ischemia- resistant CA3 neurons after normothermic ischemia, and in the CA1 neurons following hypothermic ischemia. Concomitantly, the protein was translocated to nuclei. These findings indicate that p53 and p21(WAF1/Cip1) are not markers of neuronal death following global cerebral ischemia. Their rapid and transient induction correlates with cell survival, and suggests a possible role in DNA repair.</p>},
  author       = {Tomasevic, Gregor and Kamme, F. and Stubberöd, P. and Wieloch, M. and Wieloch, Tadeusz},
  issn         = {0306-4522},
  keyword      = {Hippocampus,Hypothermia,Immunohistochemistry,In situ hybridization,p53,Rat},
  language     = {eng},
  number       = {3},
  pages        = {781--792},
  publisher    = {ARRAY(0x751fa20)},
  series       = {Neuroscience},
  title        = {The tumor suppressor p53 and its response gene p21(WAF1/Cip1) are not markers of neuronal death following transient global cerebral ischemia},
  url          = {http://dx.doi.org/10.1016/S0306-4522(98)00484-9},
  volume       = {90},
  year         = {1999},
}