Maximum dose, safety, tolerability and ketonemia after triheptanoin in glucose transporter type 1 deficiency (G1D).

Maximum dose, safety, tolerability and ketonemia after triheptanoin in glucose transporter type 1 deficiency (G1D).
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葡萄糖转运蛋白1型缺乏症(G1D)中三直霉素后的最大剂量,安全性,耐受性和酮症。

DOI:
10.1038/s41598-023-30578-z
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发表时间:
2023-03-01
期刊:
影响因子:
4.6
通讯作者:
Pascual, Juan M.
Pascual, Juan M.
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Malaga, Ignacio;Avila, Adrian;Primeaux, Sharon;Kallem, Raja Reddy;Roe, Charles R.;Putnam, William C.;Park, Jason Y.;Shinnar, Shlomo;Ahn, Chul;Pascual, Juan M.

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在能量代谢缺陷中,增强补偿性或补充中间代谢转变过程中丢失的碳是可取的。七碳庚酸的甘油三酯——三庚酸通过直接氧化或生成五碳酮体而发生倒转。在这种情况下,三庚酸可用于治疗葡萄糖转运蛋白1型缺乏性脑病(G1D)。1 g/Kg/天的口服三庚酸剂量提供了近35%的总热量摄入,并影响了G1D患者的癫痫和认知。这提供了建立最大剂量,可能更大剂量的动机。使用在肿瘤学中有用的3 + 3剂量发现方法,我们研究了3个年龄组:4-6岁、6.8-10岁和11-16岁。这使我们得出了每组的最大耐受剂量为每日卡路里摄入量的45%。通过血液分析方法确定其安全性。1例剂量限制性毒性发生在6名受试者中的1名,发生在所有组的胃肠道耐受性经常降低的中年人中。在另一组G1D受试者中测定三庚酸后的酮血症。其中,β-酮戊酸和β-羟戊酸浓度均显著升高,但变化不大。这些结果通过提供剂量和初始耐受性、安全性和酮体潜能,使三庚烷酸在G1D中进行严格的临床研究成为可能。ClinicalTrials.gov注册:NCT03041363,首次注册于2017年2月2日。
Augmentation of anaplerosis, or replenishment of carbon lost during intermediary metabolic transitions, is desirable in energy metabolism defects. Triheptanoin, the triglyceride of 7-carbon heptanoic acid, is anaplerotic via direct oxidation or 5-carbon ketone body generation. In this context, triheptanoin can be used to treat Glucose transporter type 1 deficiency encephalopathy (G1D). An oral triheptanoin dose of 1 g/Kg/day supplies near 35% of the total caloric intake and impacted epilepsy and cognition in G1D. This provided the motivation to establish a maximum, potentially greater dose. Using a 3 + 3 dose-finding approach useful in oncology, we studied three age groups: 4–6, 6.8–10 and 11–16 years old. This allowed us to arrive at a maximum tolerated dose of 45% of daily caloric intake for each group. Safety was ascertained via analytical blood measures. One dose-limiting toxicity, occurring in 1 of 6 subjects, was encountered in the middle age group in the context of frequently reduced gastrointestinal tolerance for all groups. Ketonemia following triheptanoin was determined in another group of G1D subjects. In them, β-ketopentanoate and β-hydroxypentanoate concentrations were robustly but variably increased. These results enable the rigorous clinical investigation of triheptanoin in G1D by providing dosing and initial tolerability, safety and ketonemic potential. ClinicalTrials.gov registration: NCT03041363, first registration 02/02/2017.
DOI: 10.1126/science.3945811
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