MKP-1 induced in rat brain after electroconvulsive shock is independent of regulation of 42- and 44-kDa MAPK activity.
Biochem Biophys Res Commun
; 249(3): 692-6, 1998 Aug 28.
Article
in En
| MEDLINE
| ID: mdl-9731199
ABSTRACT
Electroconvulsive shock (ECS) activates MAPKs in rat brain and also induces immediate early genes. We investigated whether ECS induces MKP-1, a specific MAPK phosphatase and an immediate early gene, for feedback regulation of MAPK activity. ECS induced MKP-1 in the cortex, but MAPK activity returned to its basal level before MKP-1 protein increased, within 10 min of ECS. MKP-1 protein amount peaked 1 hr after ECS. MKP-1 induced did not lower the basal level of MAPK activity or attenuate MAPK activation by second ECS. MAPK activation in cerebellum was very weak, but the MKP-1 induction was faster and more prominent than in the cortex. These results suggest that ECS induces MKP-1 in various rat brain regions, however, the induction may not be related to the activation of MAPK and the MKP-1 induced may be independent of the regulation of MAPK activity after ECS.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Brain
/
Protein Tyrosine Phosphatases
/
Immediate-Early Proteins
/
Calcium-Calmodulin-Dependent Protein Kinases
/
Phosphoprotein Phosphatases
/
Cell Cycle Proteins
/
Electroshock
Limits:
Animals
Language:
En
Journal:
Biochem Biophys Res Commun
Year:
1998
Document type:
Article