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Prolactin and seizure activity
Insights
Elevated prolactin levels after seizures were observed in children, particularly following tonic-clonic and complex partial seizures. This hormonal response was not seen in other seizure types or non-epileptic events.
Area of Science:
- Pediatric Neurology
- Endocrinology
Background:
- Prolactin is a hormone with a role in various physiological processes.
- Seizures can trigger neuroendocrine responses.
Observation:
- This study investigated prolactin secretion in children experiencing different seizure types and non-epileptic attacks.
- Prolactin levels were measured post-event in pediatric patients.
Findings:
- Children with tonic-clonic seizures (8/10) and complex partial seizures (3/5) showed significantly elevated postictal prolactin levels (>500 mU/l).
- Modest prolactin elevations were noted in two children with complex partial seizures.
- Other seizure types, including absence and myoclonic seizures, and non-epileptic attacks did not result in significant prolactin increases.
Implications:
- Postictal prolactin elevation may serve as a biomarker to differentiate epileptic seizures from non-epileptic events in children.
- Further research is warranted to understand the diagnostic utility and underlying mechanisms of prolactin response in pediatric epilepsy.
Abstract:
Prolactin secretion after tonic-clonic seizures (10 patients), complex partial seizures (five) and non-epileptic attacks (three) was studied in a group of children aged between 0.3 and 14 years. Seven patients with other subcategories of seizure disorders were also studied. Eight children with tonic-clonic seizures exhibited post ictal concentrations of prolactin greater than 500 mU/l. One of the children, who responded on one occasion, did not do so on another. Three children with complex partial seizures had post ictal prolactin concentrations greater than 500 mU/l, while in two the increased values were more modest (390 mU/l and 420 mU/l). The timing of the peak post ictal prolactin concentration varied from less than 20 minutes to a prolonged plateau for three hours. Other seizure types--simple partial with motor signs (2), absence seizure (1), myoclonic seizure (1), minor epileptic status (3) (with one exception), and non-epileptic attacks (3) were not associated with post ictal concentrations greater than 500 mU/l.