Altered serum levels of kynurenine metabolites in patients affected by cluster headache

DSpace/Manakin Repository

Altered serum levels of kynurenine metabolites in patients affected by cluster headache

Citable link to this page

 

 
Title: Altered serum levels of kynurenine metabolites in patients affected by cluster headache
Author: Curto, Martina; Lionetto, Luana; Negro, Andrea; Capi, Matilde; Perugino, Francesca; Fazio, Francesco; Giamberardino, Maria Adele; Simmaco, Maurizio; Nicoletti, Ferdinando; Martelletti, Paolo

Note: Order does not necessarily reflect citation order of authors.

Citation: Curto, Martina, Luana Lionetto, Andrea Negro, Matilde Capi, Francesca Perugino, Francesco Fazio, Maria Adele Giamberardino, Maurizio Simmaco, Ferdinando Nicoletti, and Paolo Martelletti. 2016. “Altered serum levels of kynurenine metabolites in patients affected by cluster headache.” The Journal of Headache and Pain 17 (1): 27. doi:10.1186/s10194-016-0620-2. http://dx.doi.org/10.1186/s10194-016-0620-2.
Full Text & Related Files:
Abstract: Background: The reported efficacy of memantine in the treatment of patients with cluster headache (CH) suggests that NMDA receptors are involved in mechanisms of nociceptive sensitization within the trigeminal system associated with CH. NMDA receptors are activated or inhibited by neuroactive compounds generated by tryptophan metabolism through the kynurenine pathway. In the accompanying manuscript, we have found that serum levels of all kynurenine metabolites are altered in patients with chronic migraine. Here, we have extended the study to patients affected by episodic or chronic CH as compared to healthy controls. Method We assessed serum levels of kynurenine (KYN), kynurenic Acid (KYNA), anthranilic acid (ANA), 3-hydroxy-anthranilic acid (3-HANA), 3-hydroxykynurenine (3-HK), xanthurenic acid (XA), quinolinic acid (QUINA), tryptophan (Trp) and 5-hydroxyindolacetic acid (5-HIAA) by means of a liquid chromatography/tandem mass spectrometry (LC/MS-MS) method in 21 patients affected by CH (15 with episodic and 6 with chronic CH), and 35 age-matched healthy subjects. Patients with psychiatric co-morbidities, systemic inflammatory, endocrine or neurological disorders, and mental retardation were excluded. Results: LC/MS-MS analysis of kynurenine metabolites showed significant reductions in the levels of KYN (-36 %), KYNA (-34 %), 3-HK (-51 %), 3-HANA (-54 %), XA (-25 %), 5-HIAA (-39 %) and QUINA (-43 %) in the serum of the overall population of patients affected by CH, as compared to healthy controls. Serum levels of Trp and ANA were instead significantly increased in CH patients (+18 % and +54 %, respectively). There was no difference in levels of any metabolite between patients affected by episodic and chronic CH, with the exception of KYN levels, which were higher in patients with chronic CH. Conclusion: The reduced levels of KYNA (an NMDA receptor antagonist) support the hypothesis that NMDA receptors are overactive in CH. A similar reduction in KYNA levels was shown in the accompanying manuscript in patients affected by chronic migraine. The reduced levels of XA, a putative analgesic compound, may contribute to explain the severity of pain attacks in CH. These data, associated with the data reported in the accompanying manuscript, supports a role for the kynurenine pathway in the pathophysiology of chronic headache disorders.
Published Version: doi:10.1186/s10194-016-0620-2
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4801826/pdf/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:26859945
Downloads of this work:

Show full Dublin Core record

This item appears in the following Collection(s)

 
 

Search DASH


Advanced Search
 
 

Submitters