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Circadian variations of proopiocortin-related peptides in children with migraine
Insights
Prepubertal children with common migraine exhibit elevated levels of B-lipotropin (BLPH), ACTH, and B-endorphin (BEP) compared to healthy peers. These findings distinguish pediatric migraine from adult headache forms.
Area of Science:
- Neuroendocrinology
- Pediatric Neurology
- Pain Research
Background:
- Migraine is a common neurological disorder in children.
- The role of proopiomelanocortin (POMC)-related peptides in pediatric migraine is not well understood.
- Previous studies in adults suggest altered opioid levels in severe headache forms.
Purpose of the Study:
- To investigate basal and diurnal variations of POMC-derived peptides and cortisol in prepubertal children with common migraine.
- To compare peptide levels in migraineurs with healthy controls.
- To differentiate the neuroendocrine profile of pediatric migraine from adult headache conditions.
Main Methods:
- Plasma levels of B-lipotropin (BLPH), B-endorphin (BEP), ACTH, and cortisol were measured.
- Measurements were taken at basal and throughout-the-day (morning and evening) time points.
- A cohort of seven prepubertal children with common migraine and six healthy volunteers were studied.
Main Results:
- Children with migraine showed significantly higher plasma levels of BLPH, ACTH, and BEP compared to healthy controls.
- Cortisol levels were comparable between the groups.
- While peptide levels decreased from morning to evening in both groups, the reduction was less pronounced in migraineurs.
Conclusions:
- Prepubertal migraine is associated with elevated proopiomelanocortin-related peptide levels.
- These findings suggest a distinct neuroendocrine profile in pediatric migraine.
- The observed peptide elevations may be linked to chronic stress or other underlying mechanisms, differentiating it from adult headache presentations.
Abstract:
Basal and throughout-the-day variations of B-lipotropin (BLPH), B-endorphin (BEP), ACTH and cortisol plasma levels were studied in seven prepubertal children who had been affected by common migraine for periods of 6-26 months and in six healthy volunteers. Despite normal cortisol concentrations, children with migraine show higher BLPH (15.1 +/- 2.7 fmol/ml, M +/- SE), ACTH (25 +/- 2.7) and BEP (9.1 +/- 1.1) levels than controls. In both groups of children, evening values (8 p.m.) were significantly lower than morning values, but in migraineurs the decrease of the three peptides was less. The raised proopiocortin-related peptide plasma levels found in children suffering from migraine cannot be explained at present, although the discomfort experienced by the patients may create a situation of chronic stress which could explain such a finding. Whatever the explanation is, these findings differentiate prepubertal migraine from the most severe forms of headache occurring in adult life where lower than normal opioid levels have been demonstrated.