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Decreased cerebrospinal fluid hypocretin‐1 (orexin A) in patients after repetitive generalized tonic–clonic seizures
Author(s) -
Rejdak Konrad,
Papuć Ewa,
Grieb Paweł,
Stelmasiak Zbigniew
Publication year - 2009
Publication title -
epilepsia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.687
H-Index - 191
eISSN - 1528-1167
pISSN - 0013-9580
DOI - 10.1111/j.1528-1167.2008.01990.x
Subject(s) - cerebrospinal fluid , status epilepticus , orexin , epilepsy , anesthesia , medicine , orexin a , convulsion , pathophysiology , psychology , neuropeptide , psychiatry , receptor
Summary The effects of seizures on the hypocretin/orexin system have not yet been investigated in epileptic patients. The present study aimed to assay hypocretin‐1 in the cerebrospinal fluid (CSF) of patients after generalized tonic–clonic (GTC) seizures. Study groups consisted of 21 patients after GTC seizures and 19 controls. Diagnostic lumbar puncture was performed in control and epileptic patients within 48 h after the GTC seizures. Hypocretin‐1 levels were measured in unextracted CSF samples, using a standardized commercial radioimmunoassay. There was a significant overall difference in median CSF hypocretin‐1 concentrations between controls and patients with GTC patients (p < 0.001). The lowest concentrations were noted in a subgroup of patients with repetitive GTC seizures (RS) compared to those with a single GTC seizure (SS) (p > 0.05) or controls (p < 0.001). The current results suggest that the hypocretin‐1 system deficiency contributes to the complex pathophysiology of repetitive GTC seizures and status epilepticus (SE) and could be associated with typical somnolence after seizure attacks.