A Ketogenic Diet Acts on Cortical But Not Subcortical Responsivity in Migraineurs
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|ClinicalTrials.gov Identifier: NCT03775252|
Recruitment Status : Completed
First Posted : December 13, 2018
Last Update Posted : December 13, 2018
A short ketogenic diet (KD) treatment can prevent migraine attacks and correct excessive cortical response. Here, investigators aim to prove if the KD-related changes of cortical excitability are primarily due to cerebral cortex activity or are modulated by the brainstem.
Through the stimulation of the right supraorbital division of the trigeminal nerve, there will be concurrently interictally recorded the nociceptive blink reflex (nBR) and the pain-related evoked potentials (PREP) in 18 migraineurs patients without aura before and after 1-month on KD, while in metabolic ketosis. nBR and PREP reflect distinct brain structures activation: the brainstem and the cerebral cortex respectively. It will be estimated nBR R2 component area-under-the-curve as well as PREP amplitude habituation as the slope of the linear regression between the 1st and the 2nd block of 5 averaged responses.
|Condition or disease||Intervention/treatment||Phase|
|Migraine Disorders||Dietary Supplement: Ketogenic diet||Not Applicable|
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||18 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Primary Purpose:||Basic Science|
|Official Title:||A Ketogenic Diet Normalizes Interictal Cortical But Not Subcortical Responsivity in Migraineurs|
|Actual Study Start Date :||January 1, 2017|
|Actual Primary Completion Date :||June 30, 2017|
|Actual Study Completion Date :||November 30, 2017|
Experimental: Ketogenic diet
Group of patients treated with ketogenic diet after the first neurophysiological screening.
Dietary Supplement: Ketogenic diet
Diet rich in fats and poor in carbohydrate, to induce metabolic ketosis
- Trigeminal neurophysiological changes (amplitude) [ Time Frame: one month ]Comparison before and during ketogenic diet of trigeminal neurophysiological features in a population of patients with migraine. In particular, the nociceptive blink reflex (nBR) and the trigeminal pain-related evoked potentials (PREPs) changes of amplitude between the baseline (pre-diet) and during the diet will be used as markers of ketones activity on neural modulation. The unit of measure of the amplitude of neurophysiological evoked responses are the micronVolts (1 volt X 10^-6).
- Trigeminal neurophysiological changes (latencies) [ Time Frame: one month ]Comparison before and during ketogenic diet of latencies of trigeminal neurophysiological evoked responses in a population of patients with migraine. In particular, the latency of evoked nociceptive blink reflex (nBR) and the trigeminal pain-related evoked potentials (PREPs) changes between the baseline (pre-diet) and during the diet. The unit of measure of the latency of the neurophysiological features are the milliseconds (1 sec X 10^-3).
- Trigeminal neurophysiological changes (slope) [ Time Frame: one month ]Comparison before and during ketogenic diet of the habituation slope of amplitudes of repeated responses to repetitive trigeminal painful electrical stimuli in a population of patients with migraine. A repetitive stimulus induces repetitive responses from the brainstem and cerebral cortex that physiologically have a decremental trend of amplitudes, also called habituation. On the contrary, in migraineurs, there is a deficit of habituation, i.e. a lack of decremental responses, both in nociceptive blink reflex (nBR) and the trigeminal pain-related evoked potentials (PREPs). The changes induced by ketogenic diet in habituation slope will be measured. The unit of measure of the slope is the radiant degree.
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Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03775252
|Policlinico Umberto I|
|Rome, Italy, 00161|
|Study Chair:||francesco Pierelli, MD||Sapienza University of Rome|