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

Increased plasma kynurenine and its relationship to neopterin and tryptophan in Tourette's syndrome.

Fasting plasma levels of tryptophan, kynurenine and the pteridines, neopterin and tetrahydrobiopterin were measured in seven patients with Gilles de la Tourette syndrome ( GTS) and 10 healthy controls. Plasma kynurenine was significantly elevated in the GTS patients. The lowest patient value was higher than the highest control value. Values for tryptophan, neopterin and tetrahydrobiopterin were similar in TS patients and controls. However, in TS patients only, there was a significant negative correlation between tryptophan and neopterin and a significant positive correlation between kynurenine and neopterin when controlling for tryptophan. This finding indicates that activation of cellular immune processes is a possible explanation for the rise in plasma kynurenine.[1]

References

  1. Increased plasma kynurenine and its relationship to neopterin and tryptophan in Tourette's syndrome. Rickards, H., Dursun, S.M., Farrar, G., Betts, T., Corbett, J.A., Handley, S.L. Psychological medicine. (1996) [Pubmed]
 
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