Abstract:
:Peripheral noxious stimulation leads to phosphorylation and thereby activation of the transcription factor CREB in the spinal cord. CREB phosphorylation occurs mainly at serine 133, but the phosphorylation site at serine 142 may also be important. We investigated the impact of spinal CREB protein levels and phosphorylation at Ser142 on the nociceptive behaviour in rat and mouse models of inflammatory nociception. Downregulation of total CREB protein in the rat spinal cord by antisense-oligonucleotides resulted in antinociceptive effects. After peripheral noxious stimulation CREB was phosphorylated in the spinal cord at serine 133 and 142 indicating a potential role of both residues in nociceptive processing. However, Ser142 mutant mice developed equal behavioural correlates of hyperalgesia as wild-type mice in different inflammatory models. Thus, our data confirm that CREB is essential for spinal nociceptive processing. However, prevention of phosphorylation only at serine 142 is not sufficient to modulate the nociceptive response.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Niederberger E,Ehnert C,Gao W,Coste O,Schmidtko A,Popp L,Gall CV,Korf HW,Tegeder I,Geisslinger Gdoi
10.1016/j.bbrc.2007.07.148subject
Has Abstractpub_date
2007-10-12 00:00:00pages
75-80issue
1eissn
0006-291Xissn
1090-2104pii
S0006-291X(07)01643-9journal_volume
362pub_type
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