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Ketosis Ameliorates Renal Cyst Growth in Polycystic Kidney Disease.
Cell Metabolism ( IF 27.7 ) Pub Date : 2019-10-17 , DOI: 10.1016/j.cmet.2019.09.012
Jacob A Torres 1 , Samantha L Kruger 1 , Caroline Broderick 1 , Tselmeg Amarlkhagva 1 , Shagun Agrawal 1 , John R Dodam 2 , Michal Mrug 3 , Leslie A Lyons 2 , Thomas Weimbs 1
Affiliation  

Mild reduction in food intake was recently shown to slow polycystic kidney disease (PKD) progression in mouse models, but whether the effect was due to solely reduced calories or some other aspect of the diet has been unclear. We now show that the benefit is due to the induction of ketosis. Time-restricted feeding, without caloric reduction, strongly inhibits mTOR signaling, proliferation, and fibrosis in the affected kidneys in a PKD rat model. A ketogenic diet had a similar effect and led to regression of renal cystic burden. Acute fasting in rat, mouse, and feline models of PKD results in rapid reduction of cyst volume, while oral administration of the ketone β-hydroxybutyrate (BHB) in rats strongly inhibits PKD progression. These results suggest that cystic cells in PKD are metabolically inflexible, which could be exploited by dietary interventions or supplementation with BHB, representing a new therapeutic avenue to treat PKD.

中文翻译:


酮症可改善多囊肾病的肾囊肿生长。



最近,在小鼠模型中,轻度减少食物摄入量被证明可以减缓多囊肾病 (PKD) 的进展,但尚不清楚这种效果是否仅仅是由于热量减少或饮食的其他方面所致。我们现在表明,这种益处是由于酮症的诱导。在 PKD 大鼠模型中,限时喂养且不减少热量,可强烈抑制受影响肾脏的 mTOR 信号传导、增殖和纤维化。生酮饮食也有类似的效果,并导致肾囊性负担的消退。在 PKD 的大鼠、小鼠和猫模型中,急性禁食会导致囊肿体积迅速缩小,而在大鼠中口服酮 β-羟基丁酸酯 (BHB) 会强烈抑制 PKD 的进展。这些结果表明 PKD 中的囊性细胞代谢不灵活,可以通过饮食干预或补充 BHB 来利用,这代表了治疗 PKD 的新治疗途径。
更新日期:2019-11-09
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