Abstract Title:

Hippocampal sclerosis in refractory temporal lobe epilepsy is associated with gluten sensitivity.

Abstract Source:

J Neurol Neurosurg Psychiatry. 2009 Jun;80(6):626-30. Epub 2009 Feb 24. PMID: 19244266

Abstract Author(s):

M Peltola, K Kaukinen, P Dastidar, K Haimila, J Partanen, A-M Haapala, M Mäki, T Keränen, J Peltola

Article Affiliation:

Medical school, University of Tampere, Tampere, Finland.

Abstract:

BACKGROUND: Previous studies have associated coeliac disease (CD) and gluten sensitivity (defined as the presence of anti-gliadin antibodies and positive immunogenetics) with cerebellar degeneration and epilepsy with occipital calcifications. Hippocampal sclerosis (HS) in temporal lobe epilepsy (TLE) is a potentially progressive disorder with unknown aetiology; however, autoimmunity has been implicated as one of the possible mechanisms leading to HS. The purpose of this study is to analyze CD-associated antibodies and gluten sensitivity in a well-characterised group of patients with refractory focal epilepsy.

METHODS: We measured anti-gliadin, anti-tissue-transglutaminase and anti-endomysium antibodies, and coeliac-type human leukocyte antigen (DQ2 and DQ8), in 48 consecutive patients with therapy-resistant, localisation-related epilepsy. The patients were categorised into the following three groups on the basis of ictal electro-clinical characteristics and the findings of high resolution MRI: TLE with HS (n = 16), TLE without HS (n = 16) and extratemporal epilepsy (n = 16). Patients with suspected CD or gluten sensitivity underwent duodenal biopsies.

RESULTS: Seven patients in total were gluten sensitive; all of these patients fell in the TLE with HS group. On the other hand, none of the TLE without HS patients or those with extratemporal epilepsy were gluten sensitive (p<0.0002). The results of duodenal biopsies showed that three of the seven gluten-sensitive patients had histological evidence of CD and four had inflammatory changes consistent with early CD without villous atrophy. Four of the patients with gluten sensitivity had evidence of dual pathology (HS+another brain lesion), whereas none of the remaining patients did (p<0.0002).

CONCLUSIONS: The present study demonstrates a previously unrecognised link between gluten sensitivity and TLE with HS. This association was very robust in this well-characterised group of patients; thus gluten sensitivity should be added to the list of potential mechanisms leading to intractable epilepsy and HS.

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