Many cell types have significant negative resting membrane potentials (RMPs) resulting from the activity of potassium-selective and chloride-selective ion channels. In excitable cells, such as neurones, rapid changes in membrane permeability underlie the generation of action potentials. Chondrocytes
Role of membrane potential in the regulation of lectin-induced calcium uptake
✍ Scribed by Erwin W. Gelfand; Roy K. Cheung; Sergio Grinstein
- Publisher
- John Wiley and Sons
- Year
- 1984
- Tongue
- English
- Weight
- 754 KB
- Volume
- 121
- Category
- Article
- ISSN
- 0021-9541
No coin nor oath required. For personal study only.
✦ Synopsis
Human peripheral blood mononuclear cells were obtained following Ficoll-Hypaque gradient centrifugation (Cheung et al., 1982a). T lymphocytes were obtained following E-rosette enrichment as described (Cheung et al., 1982a). Greater than 95% of the cells obtained in this way were identified as T lymphocytes.
Media
Normal phosphate-buffered saline (PBS) was prepared as described (Cheung et al., 198213). Where indicated, the NaCl was isoosmotically substituted by KCl, RbCl, CsCI,
📜 SIMILAR VOLUMES
Na-free Ringer (sucrose Ringer) K-free sucrose Saline Isotonic sucrose Ringer 5 mM K-Ringer 30 mM K-Ringer "C
## Abstract The nucleated red blood cells of the Winter Flounder __Pseudopleuronectes americanus__ demonstrate a volume regulatory response subsequent to osmotic perturbation. The net water movements associated with the response are secondary to net inorganic cation flux. The increased net cation f
## Abstract The Na^+^‐dependent accumulation of α‐aminoisobutyric acid (AIB), measured in normal growing and quiescent (serum‐deprived) HSWP cells (human diploid fibroblast), was found to be twofold higher (AIB~in~/AIB~out~ = 20–25) under the normal growing conditions. Serum stimulation of quiescen
## Abstract The total membrane fraction of a chick embryo fibroblast (CEF) homogenate accumulates calcium in an energy‐dependent manner. This activity can be dissociated into azide‐sensitive and azide‐insensitive components. The azide‐sensitive component of calcium uptake is believed to represent m
## Abstract Reticulocytes suspended in low ionic strength media such as isotonic sucrose solution efficiently take up non‐transferrin‐bound iron and utilize it for heme synthesis. The present study was undertaken to determine how such media facilitate iron utilization by the cells. The effects of c