Echevarría Ibargüengoitia J L, Jasso Gutiérrez L, Baca Rodríguez L C, Díaz Benssunsen S
Bol Med Hosp Infant Mex. 1978 May-Jun;35(3):409-14.
A direct method was used to study the concentration of intraerythrocytic sodium and postassium in 21 prematures with adequate weight for their gestational age and in 24 small for their gestational age. Intraerythrocytic potassium showed to be less, while sodium turned out to be greater in the group of prematures small for their gestational age when compared with those with adequates weight. No significant differences were found between concentrations of serum sodium and potassium in both groups. These results are in close relationship with the findings of potassium in the muscular cell and in the leukocytes of infants with protein-calorie malnutrition and may show importance in terms of the flow of ions through the erythrocytic membrane.
采用直接法研究了21例与胎龄相称体重的早产儿和24例小于胎龄儿的红细胞内钠和钾浓度。与体重相称的早产儿组相比，小于胎龄早产儿组的红细胞内钾含量较低，而钠含量较高。两组血清钠和钾浓度之间未发现显著差异。这些结果与蛋白质-热量营养不良婴儿的肌肉细胞和白细胞中钾的研究结果密切相关，可能在离子通过红细胞膜的流动方面具有重要意义。
