Water transport in human red cells: effects of ‘non-inhibitory’ sulfhydryl reagents
| Autor: | Adriana Hodaˆrnaˇu, Victor I. Pop, Gheorge Benga, Victoria Borza, John M. Wrigglesworth, Octavian Popescu |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Cell Membrane Permeability
Erythrocytes Magnetic Resonance Spectroscopy Water transport Chemistry DTNB Sulfhydryl Reagents Cell Biophysics Water Dithionitrobenzoic Acid Cell Biology Ethylmaleimide Biochemistry Red blood cell medicine.anatomical_structure Permeability (electromagnetism) Reagent Sulfhydryl reagent medicine Humans heterocyclic compounds |
| Zdroj: | Biochimica et Biophysica Acta (BBA) - Biomembranes. 1061:309-312 |
| ISSN: | 0005-2736 |
| DOI: | 10.1016/0005-2736(91)90297-l |
| Popis: | The water diffusional permeability of human red blood cells following exposure to various sulfhydryl group (SH) reagents have been studied using a nuclear magnetic resonance technique. Exposure of red blood cells up to 12 mM N -ethylmaleimide (NEM) or 10 mM 5,5′-dithio-bis(2-nitrobenzoic acid) (DTNE) alone does not affect water diffusion. In contrast, when DTNB treatment follows a preincubation of the cells with NEM, a small (18% at 37°C) but significant inhibition of water permeability occurs. The NEM and DTNB treatment of the cells caused no change of the cell shape and volume or of the cell water volume. Consequently, the inhibition observed after NEM and DTNB treatment has a real significance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|