Clinical relevance of depressed kynurenine pathway in episodic migraine patients: potential prognostic markers in the peripheral plasma during the interictal period

Background Altered glutamatergic neurotransmission and neuropeptide levels play a central role in migraine pathomechanism. Previously, we confirmed that kynurenic acid, an endogenous glutamatergic antagonist, was able to decrease the expression of pituitary adenylate cyclase-activating polypeptide 1...

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Published in:Journal of headache and pain 2021-12, Vol.22 (1), p.60-60, Article 60
Main Authors: Tuka, Bernadett, Nyári, Aliz, Cseh, Edina Katalin, Körtési, Tamás, Veréb, Dániel, Tömösi, Ferenc, Kecskeméti, Gábor, Janáky, Tamás, Tajti, János, Vécsei, László
Format: Article
Language:English
Subjects:
Acids
Anthranilic acid
Aura-without aura
Clinical features
Episodic migraine
Glutamatergic transmission
Headache
Interictal-ictal periods
Internal Medicine
Kynurenic acid
Medical prognosis
Medicine
Medicine & Public Health
Melatonin
Menstruation
Metabolism
Metabolites
Migraine
Neurology
Neuropeptides
Neurotoxicity
Neurotransmission
Pain Medicine
Picolinic acid
Pituitary adenylate cyclase-activating polypeptide
Plasma tryptophan metabolites: kynurenine-serotonin-melatonin pathways
Research Article
Serotonin
Tryptophan
Xanthurenic acid
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Summary:Background Altered glutamatergic neurotransmission and neuropeptide levels play a central role in migraine pathomechanism. Previously, we confirmed that kynurenic acid, an endogenous glutamatergic antagonist, was able to decrease the expression of pituitary adenylate cyclase-activating polypeptide 1–38, a neuropeptide with known migraine-inducing properties. Hence, our aim was to reveal the role of the peripheral kynurenine pathway (KP) in episodic migraineurs. We focused on the complete tryptophan (Trp) catabolism, which comprises the serotonin and melatonin routes in addition to kynurenine metabolites. We investigated the relationship between metabolic alterations and clinical characteristics of migraine patients. Methods Female migraine patients aged between 25 and 50 years ( n  = 50) and healthy control subjects ( n  = 34) participated in this study. Blood samples were collected from the cubital veins of subjects (during both the interictal/ictal periods in migraineurs, n  = 47/12, respectively). 12 metabolites of Trp pathway were determined by neurochemical measurements (UHPLC-MS/MS). Results Plasma concentrations of the most Trp metabolites were remarkably decreased in the interictal period of migraineurs compared to healthy control subjects, especially in the migraine without aura (MWoA) subgroup: Trp ( p  
ISSN:1129-2369
1129-2377
DOI:10.1186/s10194-021-01239-1