| Journal: | Revista médica del Hospital General de México |
| Database: | PERIÓDICA |
| System number: | 000439516 |
| ISSN: | 0185-1063 |
| Authors: | Pérez Pacheco, Argelia1 Salazar Nieva, Laura B2 García Valenzuela, Augusto3 Mendoza García, Emma R4 Martínez Tovar, Adolfo5 Olarte Carrillo, Irma5 Márquez Islas, Roberto1 |
| Institutions: | 1Hospital General de México, Unidad de Investigación y Desarrollo Tecnológico, Ciudad de México. México 2Universidad Nacional Autónoma de México, Facultad de Ciencias, Ciudad de México. México 3Universidad Nacional Autónoma de México, Instituto de Ciencias Aplicadas y Tecnología, Ciudad de México. México 4Hospital General de México, Laboratorio de Hematología Especial, Ciudad de México. México 5Hospital General de México, Laboratorio de Biología Molecular, Ciudad de México. México |
| Year: | 2020 |
| Season: | Ene-Mar |
| Volumen: | 83 |
| Number: | 1 |
| Pages: | 20-25 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | The osmotic fragility (OF) test is one of the most suitable procedures to determine the resistance of the erythrocyte membrane under conditions of osmotic stress. One of the most frequent clinical uses of the FO test is the diagnosis of hereditary conditions that affect erythrocytes: thalassemia and spherocytosis. Both conditions induce red blood cells (RBCs) to be prone to swelling and then lyse under osmotic stress faster than those RBCs without any pathology. Since the standard OF test is time consuming and needs specialized equipment, a fast, accessible, and reliable technique is necessary to determine the OF. Objective: The objective of the study was to evaluate an alternative technique to determine the OF of erythrocytes by refractive index (RI) measurements. The method consists of measuring the real part of the RI of dilutions of whole blood samples with hypotonic solutions at different NaCl concentrations, ranging from 0% to 0.9% using a standard Abbe refractometer. Materials and methods: An experimental study was carried out with volunteers who went to the General Hospital of Mexico “Eduardo Liceaga.” Peripheral blood samples from 12 healthy volunteers were used through the standard blood draw procedure and stored in a heparinized vacutainer tube. Results and conclusions: The proposed technique that uses an Abbe refractometer to measure the infrared of different solutions of whole blood and hypotonic solutions to determine the OF curve has proven to be simpler and more robust than the standard method based on the measurement of light absorption in dilutions of hemolyzed blood. The determination of the OF of erythrocytes rapidly and straightforwardly can be useful in the detection of specific pathologies |
| Disciplines: | Medicina |
| Keyword: | Hematología, Diagnóstico, Eritrocitos, Membrana eritrocitaria, Fragilidad osmótica, Indice de refracción, Refractometría |
| Keyword: | Hematology, Diagnosis, Erythrocytes, Erythrocyte membrane, Osmotic fragility, Refraction index, Refractometry |
| Full text: | https://www.hospitalgeneral.mx/frame_esp.php?id=49 |
