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Serotonergic functioning in children with oppositional defiant disorder: a sumatriptan challenge study.

Heddeke Snoek¹, Stephanie H M van Goozen, Walter Matthys

¹Department of Child and Adolescent Psychiatry, B01-201, University Medical Center Utrecht, PO Box 85500, Utrecht 3508 GA, The Netherlands.

Biological Psychiatry

|April 18, 2002

Summary

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Children with oppositional defiant disorder (ODD) show heightened sensitivity in their postsynaptic serotonin 5-HT(1B/1D) receptors. This heightened sensitivity may be linked to impulsive aggression and altered stress responses.

Area of Science:

Neuroscience
Child Psychiatry
Pharmacology

Background:

Central serotonergic function disturbances are linked to impulsive aggression.
Specific serotonin 5-HT(1B) receptors are implicated in impulsive aggressive behavior.
Oppositional defiant disorder (ODD) in children warrants investigation into receptor functioning.

Purpose of the Study:

To investigate serotonin 5-HT(1B/1D) receptor functioning in children diagnosed with ODD.
To explore the relationship between receptor function and impulsive aggression in this population.

Main Methods:

Examined growth hormone (GH) response to sumatriptan (a 5-HT(1B/1D) agonist) in 20 children with ODD and 15 normal controls (NC).
Assessed stress response by measuring salivary cortisol levels.

Related Experiment Videos

GH and cortisol levels were monitored following sumatriptan administration.

Main Results:

Children with ODD exhibited a significantly stronger GH response to sumatriptan compared to NC.
NC children showed a significant cortisol increase post-injection, indicating a stress response.
The ODD group did not display a similar cortisol increase, suggesting altered stress reactivity.

Conclusions:

The findings suggest enhanced functional sensitivity of postsynaptic 5-HT(1B/1D) receptors in children with ODD.
This heightened receptor sensitivity may contribute to the neurobiological underpinnings of ODD and associated behaviors.