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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

The galanin antagonist M35 has intrinsic agonistic activity in the dorsal root ganglion.

The chimeric peptide M35 (galanin(1-3)-bradykinin(2-9)amide) is a high-affinity galanin receptor ligand which acts as a galanin receptor antagonist in many experimental models such as the flexor reflex and chronic constriction injury in rat. However, more recently there have been conflicting reports that M35 may act as a galanin receptor agonist in certain systems. Here we demonstrate that in the absence of endogenous galanin M35 has an agonistic effect, significantly enhancing neurite outgrowth from cultured adult mouse dorsal root ganglion neurons, albeit at a lower potency than galanin peptide itself. However, in the presence of galanin its agonistic activity is masked and thus it appears to act as a galanin receptor antagonist.[1]

References

  1. The galanin antagonist M35 has intrinsic agonistic activity in the dorsal root ganglion. Mahoney, S.A., Hosking, R., Wynick, D. Neuroreport (2003) [Pubmed]
 
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