Plasma calcitonin gene‐related peptide (CGRP) in migraine and endometriosis during the menstrual cycle

Bianca Raffaelli, Lucas Hendrik Overeem, Jasper Mecklenburg, Maxi Dana Hofacker, Henriette Knoth, Claus Peter Nowak, Claus Nowak, Lars Neeb, Andreas D. Ebert, Andreas Dietmar Ebert, Jalid Sehouli, Sylvia Mechsner, Uwe Reuter
Annals of clinical and translational neurology · 2021 · vol. 8(6) , pp. 1251–1259 · doi:10.1002/acn3.51360 · PMID:33934575 · W3157692223
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Plasma calcitonin gene-related peptide (CGRP) levels changed differently during the menstrual cycle between healthy women and those with migraine, endometriosis, or both, suggesting altered CGRP regulation in the comorbidity group.

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Abstract

OBJECTIVE: Migraine, endometriosis, and the comorbidity of both are frequent pain disorders of special relevance for women. The neuropeptide calcitonin gene-related peptide (CGRP) is critically involved in migraine, and circumstantial evidence suggests a role in endometriosis. We assessed CGRP levels at different times of menstrual cycle in four groups: healthy women, women with migraine or endometriosis and with the comorbidity of both. METHODS: Women with episodic migraine and women with a histologically confirmed endometriosis were recruited from specialized centers. For CGRP determination with a commercial enzyme immunoassay kit, cubital vein blood samples were collected on menstrual cycle day 2 ± 2 (during menstruation) and on day 15 ± 2 (periovulatory period). The primary endpoint of the study was the absolute difference of CGRP plasma levels between the menstrual and the periovulatory phase of all study groups. Groups were compared using nonparametric test procedures. RESULTS: A total of 124 women were included in the study. The change of CGRP plasma levels between menstruation and the periovulatory period was different between groups (p = 0.007). Women with comorbid migraine and endometriosis showed an increase of CGRP in the menstrual phase of +6.32 (interquartile range, IQR -3.64-13.60) compared to the periovulatory time, while healthy controls had a decrease of -10.14 (-22.54-0.91, p = 0.004). CGRP levels were different in the periovulatory phase among groups (p = 0.008), with highest values in healthy controls. INTERPRETATION: CGRP levels change significantly during the menstrual cycle. Different patterns in women with the comorbidity point to a deviant regulation of CGRP release.

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Condition tags

mesh:D004715endometriosis

MeSH descriptors

Calcitonin Gene-Related Peptide Endometriosis Menstrual Cycle Migraine Disorders Peptide Fragments Adult Calcitonin Gene-Related Peptide Comorbidity Endometriosis Endometriosis Female Humans Longitudinal Studies Menstrual Cycle Migraine Disorders Migraine Disorders Peptide Fragments

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