The diagnostic value of glucose transporter 1 level of erythrocyte membrane and glucose uptake rate of erythrocytes in glucose transporter type 1 deficiency syndrome
10.3760/cma.j.cn101070-20210409-00408
- VernacularTitle:红细胞膜表面葡萄糖转运蛋白1水平及红细胞葡萄糖摄取率在葡萄糖转运体1缺陷综合征中的诊断价值
- Author:
Lin WAN
1
;
Man WANG
;
Yulin SUN
;
Zhichao LI
;
Yuehao CHEN
;
Jiaxin WANG
;
Huimin YAN
;
Guang YANG
Author Information
1. 中国人民解放军总医院儿科医学部，北京 100853
- Keywords:
Glucose transporter 1 deficiency syndrome;
Glucose transporter 1 of erythrocyte membrane;
Flow cytometry
- From:
Chinese Journal of Applied Clinical Pediatrics
2022;37(10):733-737
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore new methods to assist the diagnosis of glucose transporter type 1 deficiency syndrome (GLUT1-DS).Methods:Sixteen children with epilepsy and/or movement disorder carrying the SLC2A1 mutation who admitted to Department of Pediatrics, the First Medical Center, Chinese People′s Liberation Army General Hospital and Department of Nutrition, Shanghai Deji Hospital from October 2019 to October 2020 were retrospectively analyzed.GLUT1-DS was diagnosed based on clinical phenotype, glucose level in CSF and/or genetic testing results.Forty-four healthy children who underwent physical examination in the First Medical Center, Chinese People′s Liberation Army General Hospital during the same period were selected as healthy control group.Glucose transporter 1 (GLUT1) level on the membrane surface of peripheral red blood cells and erythrocyte glucose uptake rate were measured by flow cytometry and glucose oxidase method, respectively.Their differences between groups were compared by the rank sum test.The receiver operating cha-racteristic (ROC) curve was plotted to assess their diagnostic value. Results:Sixteen children were diagnosed as GLUT1-DS.GLUT1 levels of 16 children with GLUT1-DS were significantly lower than those of healthy control group [17.96% (13.43%, 22.12%) vs.27.93% (24.76%, 34.30%), Z=5.249, P<0.001]. Area under curve (AUC) was 0.946, and weighted Kappa was 0.791 ( P<0.001). The erythrocyte glucose uptake was measured in 12 children with GLUT1-DS, which was significantly lower than that of healthy control group [23.14% (14.80%, 26.45%) vs.27.40% (24.61%, 32.82%), Z=2.366, P=0.018]. AUC and weighted Kappa were 0.724 and 0.344, respectively ( P<0.001), showing a poor consistency. Conclusions:GLUT1 level on the surface of human erythrocyte membrane measured by flow cytometry may be a new method to assist the diagnosis of GLUT1-DS.The erythrocyte glucose uptake rate test requires stricter experimental conditions and needs further investigation.
