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Carnitine deficiency: Risk factors and incidence in children with epilepsy.

Abstract：

BACKGROUND:Carnitine deficiency is relatively common in epilepsy; risk factors reportedly include combination antiepileptic drug (AED) therapy with valproic acid (VPA), young age, intellectual disability, diet and enteral or parenteral feeding. Few studies have examined the correlation between each risk factor and carnitine deficiency in children with epilepsy. We examined the influence of these risk factors on carnitine deficiency, and identified a formula to estimate plasma free carnitine concentration in children with epilepsy. METHODS:Sixty-five children with epilepsy and 26 age-matched controls were enrolled. Plasma carnitine concentrations were measured using an enzyme cycling assay, and correlations were sought with patients' other clinical characteristics. RESULTS:Carnitine deficiency was found in approximately 17% of patients with epilepsy and was significantly associated with carnitine-free enteral formula only by tube feeding, number of AEDs taken (independent of VPA use), body weight (BW), body height and Gross Motor Function Classification System (GMFCS) score. Stepwise multiple linear regression analysis indicated that carnitine concentration (in μmol/L) could be accurately estimated from a formula that does not require blood testing: 42.44+0.14×(BW in kg)-18.16×(feeding)-3.19×(number of AEDs), where feeding was allocated a score of 1 for carnitine-free enteral formula only by tube feeding and 0 for taking food orally (R(2)=0.504, P<0.001). CONCLUSIONS:Carnitine-free enteral formula only by tube feeding, multiple AED treatment and low BW are risk factors for carnitine deficiency in children with epilepsy. l-carnitine should be administered to children at risk of deficiency to avoid complications. Treatment decisions can be informed using an estimation formula that does not require blood tests.

journal_name

Brain Dev

journal_title

Brain & development

authors

Fukuda M,Kawabe M,Takehara M,Iwano S,Kuwabara K,Kikuchi C,Wakamoto H,Morimoto T,Suzuki Y,Ishii E

doi

10.1016/j.braindev.2014.12.004

subject

Has Abstract

pub_date

2015-09-01 00:00:00

pages

790-6

issue

8

eissn

0387-7604

issn

1872-7131

pii

S0387-7604(14)00289-7

journal_volume

37

pub_type

杂志文章

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