Evidence map›Paper›PMID 33648550›Full record

ArticleNutrition & metabolism2021

Differential ketogenic diet-induced shift in CSF lipid/carbohydrate metabolome of pediatric epilepsy patients with optimal vs. no anticonvulsant response: a pilot study.

Susan A Masino, David N Ruskin, Natalie R Freedgood, Marie Lindefeldt, Maria Dahlin

Open access · goldAbstract read
In one paragraph

Article in Nutrition & metabolism, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Pooled it
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  4. Observational
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  7. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 2 countries.

Susan A MasinoDepartment of Psychology and Neuroscience Program, Trinity College, Hartford, CT, 06106, USA.ORCID https://orcid.org/0000-0003-4237-4900
David N RuskinDepartment of Psychology and Neuroscience Program, Trinity College, Hartford, CT, 06106, USA. david.ruskin@trincoll.edu.ORCID https://orcid.org/0000-0002-9935-3855
Natalie R FreedgoodDepartment of Psychology and Neuroscience Program, Trinity College, Hartford, CT, 06106, USA.ORCID https://orcid.org/0000-0003-2854-4221
Marie LindefeldtNeuropediatric Department, Astrid Lindgren Children's Hospital, Karolinska Hospital, Stockholm, Sweden.
Maria DahlinNeuropediatric Department, Astrid Lindgren Children's Hospital, Karolinska Hospital, Stockholm, Sweden.ORCID https://orcid.org/0000-0002-8044-4693
Hartford Financial Services (United States)Karolinska University Hospital · SE

Funding

The Role of Adenosine in Ketogenic Diet TherapyR01NS065957 · NINDS · TRINITY COLLEGE · PI BOISON, DETLEV, GEIGER, JONATHAN DAVID · 2010 to 2021
$3.9M
Metabolic therapy to relieve pain: ketogenic diet and adenosineR15AT008742 · NCCIH · TRINITY COLLEGE · PI David Nathaniel Ruskin · 2015 to 2026
$1.8M
Ketogentic diet-induced changes in the cerebrospinal fluid: biomarkers and mechanismsR15NS066392 · NINDS · TRINITY COLLEGE · PI MASINO, SUSAN A · 2010 to 2015
$583k
National Institutes of Health (US) NS065957NCCIH NIH HHS R15 AT008742NIH HHS AT008742NIH HHS NS066392NINDS NIH HHS R01 NS065957NINDS NIH HHS R15 NS066392
6 · The paper itself

Abstract

backgroundThe low carbohydrate, high fat ketogenic diet can be an effective anticonvulsant treatment in some pediatric patients with pharmacoresistant epilepsy. Its mechanism(s) of action, however, remain uncertain. Direct sampling of cerebrospinal fluid before and during metabolic therapy may reveal key changes associated with differential clinical outcomes. We characterized the relationship between seizure responsiveness and changes in lipid and carbohydrate metabolites.

methodsWe performed metabolomic analysis of cerebrospinal fluid samples taken before and during ketogenic diet treatment in patients with optimal response (100% seizure remission) and patients with no response (no seizure improvement) to search for differential diet effects in hallmark metabolic compounds in these two groups. Optimal responders and non-responders were similar in age range and included males and females. Seizure types and the etiologies or syndromes of epilepsy varied but did not appear to differ systematically between responders and non-responders.

resultsAnalysis showed a strong effect of ketogenic diet treatment on the cerebrospinal fluid metabolome. Longitudinal and between-subjects analyses revealed that many lipids and carbohydrates were changed significantly by ketogenic diet, with changes typically being of larger magnitude in responders. Notably, responders had more robust changes in glucose and the ketone bodies β-hydroxybutyrate and acetoacetate than non-responders; conversely, non-responders had significant increases in fructose and sorbose, which did not occur in responders.

conclusionsThe data suggest that a differential and stronger metabolic response to the ketogenic diet may predict a better anticonvulsant response, and such variability is likely due to inherent biological factors of individual patients. Strategies to boost the metabolic response may be beneficial.

Indexed as

AcetoacetateAnticonvulsantCerebrospinal fluidGlucoseKetogenic dietPediatric epilepsyβ-hydroxybutyrate

Identifiers

PMID33648550
PMCPMC7923458
OpenAlexW3134386913

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.