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Abstract Title:

Ketogenic diets in the treatment of epilepsy.

Abstract Source:

Curr Pharm Des. 2017 Aug 9. Epub 2017 Aug 9. PMID: 28799513

Abstract Author(s):

Maurizio Elia, Joerg Klepper, Baerbel Leiendecker, Hans Hartmann

Article Affiliation:

Maurizio Elia

Abstract:

BACKGROUND: Although a larger number of antiepileptic drugs became available in the last decades, epilepsy remains drug-resistant in approximately a third of patients. Ketogenic diet (KD), first proposed at the beginning of the last century, is complex and has anticonvulsant effects, yet not completely understood. Over the last decades, different types of ketogenic diets (KDs) have been developed, namely classical KD and modified Atkins diet (MAD). They offer an effective alternative for children and adults with drug-resistant epilepsies.

METHODS: We review several papers on KDs as an adjunctive treatment of refractory epilepsy of children and adults, discussing its efficacy and adverse events. Because of the heterogenous, uncontrolled nature of the studies, we analyzed all studies individually, without a meta-analysis.

RESULTS: KDs may be considered first choice treatment in some specific metabolic conditions, such as glucose-transporter type 1 and pyruvate dehydrogenase deficiencies, and mitochondrial complex I defects. Preliminary findings indicate that KDs may be specifically effective in some epileptic syndromes, such as West syndrome, severe myoclonic epilepsy of infancy, myoclonic-astatic epilepsy, febrile infection related epileptic syndrome, and drug-resistant idiopathic generalized epilepsies or refractory status epilepticus. Short term adverse events are usually mild in both children and adults, including gastrointestinal symptoms, hyperlipidemia, and hypercalciuria; potential long term adverse effects include nephrolitiasis, decreased bone density, and liver steatosis. Possible atherosclerotic effects remain a concern. Patients on KDs should be carefully monitored in specialized centers during initiation, maintenance and withdrawal periods, in order to minimize such adverse events, and to improve compliance. Although the majority of KD trials on children and adults with drug-resistant epilepsies are open-label, uncontrolled studies based on small samples, an increasing number of randomized controlled trials have provided better quality evidence on its efficacy in recent years.

CONCLUSION: There is a need for future randomized clinical trials aimed to confirm the efficacy of KDs in specific epileptic syndromes, and to provide further information about some practical unsolved problems, i.e. for how long KD treatment should be continued.

Study Type : Review

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Sayer Ji
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