机构地区:[1]郑州大学附属儿童医院,河南省儿童医院郑州儿童医院河南省儿童神经发育工程研究中心,河南郑州450018 [2]北京大学第一医院儿童医学中心,北京102600 [3]山东第一医科大学附属省立医院小儿内分泌科,山东济南250021 [4]郑州大学附属儿童医院,河南省儿童医院郑州儿童医院内分泌与遗传代谢科,河南郑州450018 [5]郑州大学附属儿童医院,河南省儿童医院郑州儿童医院新生儿疾病诊疗中心,河南郑州450018 [6]上海交通大学医学院附属新华医院小儿内分泌遗传代谢科,上海200092 [7]复旦大学附属儿科医院肝病科,上海201102 [8]武汉儿童医院遗传代谢内分泌科,湖北武汉430015 [9]广州医科大学附属广州市妇女儿童医疗中心遗传与内分泌科,广东广州510623 [10]国家医疗保障研究院华科基地,湖北武汉430030
出 处:《罕少疾病杂志》2024年第6期1-3,共3页Journal of Rare and Uncommon Diseases
基 金:国家重点研发计划(2021YFC2700903,2022YFC2703401);国家自然科学基金(82000850)。
摘 要:目的 单纯型甲基丙二酸血症、丙酸血症和异戊酸血症是经典的有机酸血症,严重患者肝脏N-乙酰谷氨酸合成不足,尿素循环受阻,导致高氨血症等代谢危象,急性期快速降氨、纠正代谢性酸中毒是防治代谢性脑病的关键。本研究主要目的是分析卡谷氨酸在防治单纯型甲基丙二酸血症、丙酸血症和异戊酸血症所致高氨血症的有效性和安全性。方法 研究对象为来自全国七家医院的22例合并高氨血症的单纯型甲基丙二酸血症、丙酸血症和异戊酸血症患者,分为急性.代谢危象组和稳定期使用组,口服卡谷氨酸,监测血氨.及病情变化,观察卡谷氨酸的安全性和有效性。结果 22例患者中男14例,女8例,中位年龄为185个月,中位体重为9kg,既往平均每年代谢危象发作.31次,其中14例患MMUT基因缺陷所致单纯型甲基.丙二酸血症,7例患丙酸血症,1例患异戊酸血症。14例为急性代谢危象组,平均每年代谢危象发作3l5次,8例为稳定期使用.组,平均每年代谢危象发作26次l。急性代谢危象组卡.谷氨酸平均治疗剂量为85稳定期使用组卡谷氨酸平均治疗剂量为14L,平均随访时间为55天。服用卡谷氨酸后,所有患者食欲均改善,体重增加,未发生不良事件。结论 卡谷氨酸对有机酸血症代谢危象合并高氨血症及稳定期长期治疗有良好的有效性和安全性。Objective Isolated methylmalonic acidemia,propionic acidemia and isovaleric acidemia are classic organic acidemias.In severe cases,urea cycle defect occurs due to insufficient synthesis of liver N-acetylglutamate resulting in hyperammonemia and metabolic crisis.Rapid reduction of ammonia and correction of metabolic acidosis are keys in the treatment of metabolic encephalopathy.The main purpose of this study was to investigate the effectiveness and safety of carglumic acid in the prevention and treatment of hyperammonemia caused by isolated methylmalonic acidemia,propionic acidemia and isovaleric acidemia.MethodsThe study included 22 patients of isolated methylmalonic acidemia,propionic acidemia and isovaleric acidemia with hyperammonemia from seven hospitals of China.They were divided into acute metabolic crisis group and long-term observation group.All patients received oral carglumic acid.Their blood ammonia levels,the safety and efficacy of carglumic acid were monitored.ResultsAmong 22 patients,14 were male and 8 were female,with a median age of 18.5 months and a median weight of 9 kg.The average annual frequency of metabolic crisis was 3.1 times.14 patients had isolated methylmalonic acidemia caused by MMUT gene defects.Seven patients had propionic acidemia.One patient had isovaleric acidemia.The average annual frequency of decompensation attack of 14 patients in the acute metabolic crisis group were 3.5 times.The average annual acute metabolic decompensations of 8 cases in the long-term observation group were 2.6 times.The average doses of carglumic acid in the acute metabolic crisis group was 85.9 mg/(kg·d).Their average blood ammonia level was 175.3μmol/L before treatment.At an average period of 28.9 hours after treatment,their blood ammonia level decreased to 45.8μmol/L.Their average treatment duration was 3.3 days.The average doses of carglumic acid in the long-term management group was 14.4 mg/(kg·d).Before treatment,their average blood ammonia level was 69.8μmol/L.After treatment,the blood ammonia
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