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

Elevated plasma IGF 1 levels in stags prevented from growing antlers.

We have previously shown that plasma IGF 1 concentration is positively correlated with the rate of antler growth and have proposed that IGF 1 is stimulatory for antler growth in the red deer stag. Therefore to partly resolve the question of whether the IGF 1 was of circulating or local origin in relation to its effect on antler growth, we surgically prevented stags from growing antlers. We recorded significantly elevated plasma levels of IGF 1 in the non-antlered stags compared with normal antlered stags during the antler growth periods. This result is consistent with a hypothesis that the antler is a target organ for IGF 1 and that prevention of antler growth removed a population of IGF 1 receptors. IGF 1 is already known to stimulate body growth but this work points strongly to the possibility that plasma IGF 1 may stimulate individual organ growth in an endocrine manner.[1]

References

  1. Elevated plasma IGF 1 levels in stags prevented from growing antlers. Suttie, J.M., Fennessy, P.F., Gluckman, P.D., Corson, I.D. Endocrinology (1988) [Pubmed]
 
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