Serum prolactin in seizure disorders

Area of Science:

• Pediatric Neurology
• Clinical Biochemistry
• Epileptology

Background:

• Distinguishing epileptic seizures from seizure-like events in children is clinically challenging.
• Prolactin (PL) levels have been investigated as a potential biomarker for epileptic seizures.
• Understanding the post-ictal prolactin response is crucial for accurate diagnosis in pediatric neurology.

Purpose of the Study:

• To determine the post-ictal prolactin (PL) response in various seizure types and seizure-like events in children.
• To correlate prolactin levels with the duration of post-ictal periods.
• To assess the diagnostic utility of elevated prolactin for identifying epileptic seizures.

Main Methods:

• Patients were categorized into groups based on seizure type: generalized tonic-clonic, complex partial, simple partial seizures (Group I), febrile convulsions (Group II), and seizure mimics (Group III).
• A control group (Group IV) was included for comparison.
• Blood samples were collected within 2 hours post-event, and prolactin levels were measured.

Main Results:

• Significantly elevated prolactin levels were observed exclusively in Group I (epileptic seizures).
• Peak prolactin levels occurred within 10 minutes, returning to baseline by 100 minutes post-seizure.
• Elevated prolactin demonstrated 64% sensitivity and 98% specificity for epileptic seizures.

Conclusions:

• A high prolactin level within 100 minutes post-event is indicative of a generalized or complex partial epileptic seizure in children.
• Prolactin serves as a valuable, highly specific biomarker for differentiating epileptic seizures from other conditions.
• This finding aids in the accurate diagnosis and management of pediatric seizure disorders.