Prolactin in headache and migraine: A systematic review of clinical studies

Author:

Al-Karagholi Mohammad Al-Mahdi1ORCID,Kalatharan Veberka1ORCID,Ghanizada Hashmat1,Gram Christian1,Dussor Gregory2,Ashina Messoud13

Affiliation:

1. Danish Headache Center, Department of Neurology, Rigshospitalet– Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Glostrup, Denmark.

2. School of Behavioral and Brain Sciences, Center for Advanced Pain Studies, The University of Texas at Dallas, Richardson, USA.

3. Danish Headache Knowledge Center on Headache Disorders, Rigshospitalet – Glostrup, Glostrup, Denmark.

Abstract

Objective To systemically review clinical studies investigating the role of prolactin and its receptors in headache and migraine. Background Migraine prevalence is more common in women compared to men. As prolactin is a crucial regulator of the hypothalamus-pituitary-gonadal axis, prolactin and its receptors might contribute to signaling mechanisms underlying migraine. Methods In this systematic review, we searched PubMed and EMBASE with the terms: prolactin, hyperprolactinemia, macroprolactinemia, hypoprolactinemia, migraine, headache, head pain and trigeminal pain pathway for clinical studies investigating prolactin signaling in headache and migraine. Two reviewers independently screened 841 articles for population, intervention, comparison, outcome, and study design. Studies were restricted to the English language and were excluded if they had a nonexperimental methodology. Results Nineteen clinical studies met the inclusion criteria and were included in the qualitative and quantitative analysis. The main findings were that serum prolactin levels were found to be higher in individuals with migraine compared to healthy controls, and prolactinomas (prolactin-secreting pituitary adenomas) were correlated with higher incidence of headache in otherwise healthy individuals and migraine attacks in individuals with migraine. Conclusion Considerable evidence suggests a key role of prolactin and its receptors in migraine pathophysiology. Further randomized and placebo-controlled clinical studies targeting prolactin signaling are needed to further clarify influences of prolactin in migraine attack initiation.

Publisher

SAGE Publications

Subject

Neurology (clinical),General Medicine

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