케톤생성식이요법에 의한 연령 - 의존성 케토시스에 대한 연구
A Study on the Age-Dependent Ketosis Induced by the Ketogenic Diet
김동욱, 문진수, 장현오, 박희동, 김재문, 정기영, 채수안, 박호진,
소속 상세정보
김동욱 ( Kim Dong-Wook )
인제대학교 의과대학 일산백병원 소아과학교실
문진수 ( Moon Jin-Soo )
인제대학교 의과대학 일산백병원 소아과학교실
장현오 ( Jang Hyun-Oh )
인제대학교 의과대학 일산백병원 소아과학교실
박희동 ( Park Hee-Dong )
충남대학교 의과대학 신경과학교실
김재문 ( Kim Jae-Moon )
충남대학교 의과대학 신경과학교실
정기영 ( Jung Ki-Young )
충남대학교 의과대학 신경과학교실
채수안 ( Chae Soo-Ahn )
중앙대학교 의과대학 소아과학교실
박호진 ( Park Ho-Jin )
을지대학교 의과대학 소아과학교실
KMID : 0877220030070020108
Abstract
Purpose：Ketogenic diet (KD) remains a therapy in search of explanation although it is an established treatment for patients with intractable epilepsy. It has been clinically proven more efficacious at younger ages, presumably because of the enhanced ability of the immature brain to extract and utilize ketone bodies. The study was designed to investigate whether ketosis induced by the KD is agedependent.
Methods：A KD ([fat]：[protein+carbohydrate] ratio of 4.3：1) was administered to male Sprague-Dawley rats for 3 weeks, while control animals were fed a standard rodent chow. Dietary treatment was initiated at either postnatal 3 or 12 weeks. Blood β-hydroxybutyrate (BHB) levels were assayed from blood obtained via the tail vein with the Keto-SiteTM reflectance meter and test cards on treatment day 21.
Results：Blood BHB levels in the KD-treated group were significantly higher than those in the control group in 3 week-old rats (4.18±0.62 [n=30] vs. 0.27±0.02 [n=30] mM, respectively; p<0.0001) and 12 week-old rats (0.86±0.06 [n=30] vs. 0.22±0.02 [n=30] mM, respectively; p<0.0001). In the KD-treated groups, blood BHB levels of 3 week-old animals were significantly higher than those of 12 week-old ones (p<0.0001), whereas in the control groups, no significant differences in blood BHB levels between the two age groups (p>0.05).
Conclusions：The present study demonstrates that the KD induces more severe ketosis in younger rats. Age-dependent differences in the degree of ketosis induced by the KD may explain that the diet is clinically more efficacious at younger ages.
키워드
Ketogenic diet;β-Hydroxybutyrate;Ketosis;Age;Epilepsy;Rat
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