Ketogenic diet improves seizures

This paper is part of NMJ's microbiome output 2018. Download the full edition here. Cover Wu Q, Wang H, Fan Yy, et al. Effects of a ketogenic diet on 52 children with pharmacores' -resistant epileptic encephalopathy: a clinical prospective study. Behavior of the brain. 2018; 8 (5): E00973. Design prospective clinical study objective to measure the effects of a ketogenic diet on children who suffer from drug-resistant epileptic seizures. Participants suffered from an initial group of 62 children with pharmacores'-resistant epileptic encephalopathy a 12-week ketogenic diet. Thirty of these 52 were male; The age ranged from 3 months to 7 years. With all ...
(Symbolbild/natur.wiki)

Ketogenic diet improves seizures

This paper is part of the 2018 microbiome output by NMJ. Download the full edition here.

reference

wu q, Wang h, fan yy, et al. Effects of a ketogenic diet on 52 children with pharmacores' -resistant epileptic encephalopathy: a clinical prospective study. behavior of the brain . 2018; 8 (5): E00973.

draft

prospective clinical study

objective

to measure the effects of a ketogenic diet on children who suffer from drug -resistant epileptic seizures

participant

52 children with pharmacores'-resistant epileptic encephalopathy ended a 12-week ketogenic diet of an initial group of 62 children. Thirty of these 52 were male; The age ranged from 3 months to 7 years. For all participants, a pharmaceutical -resistant epileptic encephalopathy had been diagnosed, they had taken 2 or more types of antiepileptics and, despite regular treatment, still had frequent seizures (> 4 seizures per month). All participants were Chinese.

Nutrition intervention

Nutritionists prepared ketogenic diets for each participant according to the modified Johns Hopkins program. The ratio of fat to non -fat was gradually increased from 0.5: 1.0 to 4.0: 1.0 within 1 to 2 months according to the specific circumstances of each patient. The recipes for the ketogenic diet were designed in such a way that they match the Chinese eating habits. All participants received ketogenic nutritional intervention.

study parameters evaluated

The participants were subjected to a whole series of laboratory tests that included routine chemical, urine, lipid, liver and urine profiles; Ultrasound, electrocardiogram and electroencephalogram studies; and close monitoring of glucose, ketone bodies, seizures and side effects during the study period.

The seizures were followed a month before the dietary intervention in order to maintain the basic measurement of the seizure. During the treatment phase, a parent or legal guardian led a diary about the occurrence of seizures. The frequency of seizure was compared in weeks 4, 12 and 24.

The UCLA has already awarded license rights to a start-up company that provides funds for the development of probiotic treatment of epilepsy.

Changes in the quality of the seizures were determined in week 4 and 12 using 4-hour EEGs. In order to compare the effects, a 4-hour EEG was carried out before the treatment and 3 months after the treatment was completed. The company development scale was used to evaluate the cognitive function according to the 12 treatment weeks.

The evaluation of changes in the heavy heavy heavy is complicated. Sales can change in type, frequency and intensity. These researchers used the angel classification system that describes the response to epilepsy treatments with the following classification system:

Grade 1: Complete remission after treatment

Grade II: Rare epileptic episodes that affect the function (90 % –100 % remission)

Grade III: Increases have improved (50 % fewer seizures)

Grade IV: No significant improvement

Primary result measurement

The treatment was considered effective if the patient's seizure activity was reduced by at least 50 %.

important knowledge

The treatment was considered effective at 29 of the 52 participants (56 %) at the end of 12-week treatment. With the responders, the effect of treatment was obvious in the first 2 weeks. In 15 of the cases, advantages were observed in the first week of treatment. At the end of the study, 14 participants (27 %) were free of seizure. A significant reduction in the number of seizures was observed in 9 cases (17 %). A reduction in the number of seizures by half or more was observed in 6 cases (11.5 %). In 23 cases (44 %), the treatment was considered not effective. Keep in mind that the yardstick for effectiveness was at least 50 %reducing the number of seizures compared to the initial value (angel classification grade III or higher).

practice implications

Why is this study on ketogenic nutrition and epilepsy contained in this special edition that contains articles about human biom? At first glance you might think that this article was accidentally inserted.

The ketogenic diet has proven to be effective in the treatment of seizures in childhood. 1 The ketogenic diet is anything but new, even if this idea of ​​using it as a strategy in medication -resistant cases. It is new that we have learned that the effects of ketogenic nutrition on epilepsy can be related to the intestinal effect.

The authors of the ketogenic nutrition study discussed here do not mention this in their discussion of results. In their discussion, they were not sure why the diet works for almost half of the participants. They suggested that the conversion of the brain to the use of ketones as an energy source or perhaps the calorie restriction itself could have something to do with the advantages.

The latest hypothesis for the ketogenic anticonvulsion effect is convincing enough to be presented here, even if the data comes from mouse attempts.

Earlier experiments with mice have shown that ketogenic diets prevent the development of epilepsy, 3 Improvement of the symptoms of autism, 4 Improvement of motor symptoms in Alzheimer's disease, 5 and the epileptic activity in the brain Reduce. 6

In the edition of May 24, 2018 Cell , Christine Olson and colleagues in the laboratory of Elaine Hsiao on the UCLA suggested that the ketogenic diet quickly changes the intestine in a certain way, so that protection against electrically induced seizures and spontaneous tonic-clonish seizures in 2 mouse models of epilepsy offers. 7

In this mouse study, the authors showed that the ketogenic diet of ketogenic mice, which were either raised in a germ -free environment or treated strongly with antibiotics, offered no protection against seizures. But the transplanting of the mice with populations of Akkermansia and parabacteroides bacteria gave protection against seizures.

olson et al. suggest that the high -fat, low -carbohydrate ketogenic diet shifts the intestinal, reduces diversity and increases the populations Akkermansia muciniphila and parabacteroid spp bacteria. This displacement of the bacterial populations then reduces the gamma glutamyl transpeptidase activity, which reduces the gamma-glutamyl amino acids in the blood, which in turn increases the gamma amino acid (GABA) level in the brain. Increased GABA in the brain offers protection against seizures.

The laboratory from HSIAO has produced a constant current of interesting research results in connection with the intestinal and its effects on the brain of mice and humans.

2013 HSIAO reported that changes in the microbiota and gastrointestinal barrier could be corrected in a mouse model for autism bacteroid fragilis . HSIAO believes that such a modification of the intestine of autism -like symptoms could reduce. It is generally recognized today that immune disorders and digestive problems are common diseases in children in the autism spectrum.

The UCLA has already awarded license rights to a start-up company that has the funds for the development of probiotic treatment of epilepsy. The idea is that the correct wording of bacteria modulates GABA and provides the neuroprotective effects of a ketogenic diet in a pill form. Swallowing a pill would be easier than following a ketogenic diet and carries fewer risks for side effects.

There can be other strategies to increase the intestinal populations of these bacteria. Metformin, a medication for the treatment of type 2 diabetes, apparently increases the populations of these two types of bacteria in mice. 12 Yang et al. reported in 2017 that the chronic application of metformin in mice has a certain anticonvulsant effect. 13 of consumption of certain "resistant strengths" that are supposed to achieve the colon can also increase the populations of these bacteria.

The relationships between different types of bacteria and diseases are far from understood. Both Akkermansia muciniphila and acinetobacter calcoaceticus were found four times more often in patients with multiple sclerosis (MS) than in healthy people parabacteroides distasonis is four times more common in healthy people than in patients with MS. Akkermansia and acinetobacter are associated with inflammatory reactions at MS, while parabacteroides seems to have an anti -inflammatory effect. fifteen This makes it more difficult to determine how we do the use of specific probiotics for a certain patient Mag.

The treatment of epilepsy may be on the verge of concentrating on the change in the intestinal native with a combination of probiotics, a ketogenic diet and a supplementation with resistant strengths. If this strategy actually increases the GABA level in the brain, we are now facing a long list of other possible therapeutic goals.

  1. Petermann mg. The ketogenic diet in epilepsy. Jama . 1925; 84 (26): 1979-1983.
  2. Holtkamp M. Pharmacotherapy for refractory and super refractory status epilepticus in adults. drugs . 2018; 78 (3): 307-326.
  3. Lusardi Ta, Akula KK, Coffman SQ, et al. The ketogenic diet prevents epileptogenesis and the progression of the disease in adult mice and rats. neuropharmacology . 2015; 99: 500-509.
  4. Ruskin DN, Svedova J., Cote JL, et al. The ketogenic diet improves the core symptoms of autism in BTBR mice. plus one . 2013; 8 (6): E65021.
  5. Brownlow ML, Benner L, D’Agostino D, Gordon Mn, Morgan D. Ketogenic diet improves motor performance, but not cognition in two mouse models of Alzheimer's pathology. plus one . 2013; 8 (9): E75713.
  6. Forero Quintero LS, Deitmer JW, Becker Hm. Reduction of epileptiform activity in ketogenic mice: the role of monocarboxylate transporters. Scientific Rep . 2017; 7 (1): 4900.
  7. olson ca, vuong he, yano jm, et al. The intestinal microbiota conveys the anti-attack effect of the ketogenic diet [published online ahead of print may 24, 2018]. cell .
  8. hsiao ey, mcbride sw, hsien s, et al. Microbiota modulate behavioral and physiological anomalies in connection with neurological developmental disorders. cell . 2013; 155 (7): 1451-1463.
  9. hsiao ey. Gastrointestinal problems in autism spectrum disorders. Harv Rev Psychiatry . 2014; 22 (2): 104-111.
  10. vuong He, Hsiao Ey. New roles for the intestinal microbioma in autism spectrum disorders. biopsychiatry . 2017; 81 (5): 411-423.
  11. Taylor NP. Bloom sags cash, Ucla technology for the treatment of epilepsy via the microbiome. https://www.fiercebiotech.com/biotech/bloom-bags-cash-ucla-tech-treat-epilepsy-via-microbiome. Published on May 24, 2018. Access on June 18, 2018.
  12. Lee H, Lee Y, Kim J, et al. The modulation of the intestinal microbiota by metformin improves the metabolic profiles for aged obese mice. intestinal microbe . 2017: 1-11.
  13. yang y, zhu b, Zheng f, et al. Chronic treatment with metformin facilitates the termination of the seizures. Biochem Biophys Res Commun . 2017; 484 (2): 450-455.
  14. Graf d, di Cagno R, Fåk f, et al. Contribution of nutrition to the composition of the human intestinal microbiota. Microb Ecol Health Dis . 2015; 26: 10.3402/Mehd.v26.26164.
  15. Cekanaviciute e, Yoo BB, Runia TF, et al. Human t-cells modulate intestinal bacteria of multiple sclerosis patients and make the symptoms aggravate in mouse models. Proc Natl Acad Sci . 2017; 114 (40): 10713-10718.