Difference between revisions of "Sartor 2004 Gen Physiol Biophys"
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|topics=Respiration; OXPHOS; ETS Capacity, Aerobic and Anaerobic Metabolism | |topics=Respiration; OXPHOS; ETS Capacity, Aerobic and Anaerobic Metabolism | ||
|instruments=Oxygraph-2k | |instruments=Oxygraph-2k | ||
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Revision as of 11:35, 20 October 2010
| Sartor P, Madec F, Garcia L, Dejean L, Beauvoit B, Dufy B, Rigoulet M (2004) Interactions between intracellular chloride concentrations, intracellular pH and energetic status in rat lactotrope cells in primary culture. Gen. Physiol. Biophys. 23: 195-208. |
Sartor P, Madec F, Garcia L, Dejean L, Beauvoit B, Dufy B, Rigoulet M (2004) Gen. Physiol. Biophys.
Abstract: Rat lactotrope cells in primary cultures have a higher intracellular Cl− concentration ([Cl−]i) than that predicted by a passive distribution across the membrane. This suggests that active cellular mechanisms ensure this ionic equilibrium. In this study, we examined the interactions between pHi, [Cl−]i regulation and cell energetics. We analyzed: 1. the interactions between extracellular Cl−concentrations, [Cl−]i and cellular energy; 2. the influence of [Cl−]i on respiratory chain function; 3. the correlation with glycolysis and; 4. the role played by pHi in these cellular mechanisms. We show that low [Cl−]i decreases ATP cell content, ATP/ADP ratio and modify phosphorylative oxidations. ATP production is rather due to the anaerobic pathway of the glucose metabolism than the aerobic one and depends also on other metabolic substrates among which glutamine probably has a special role. Finally, pHi appears as a determinant in the balance between aerobic and anaerobic pathways. These results are discussed in relation to the role of Cl− in normal and pathological (effect of hypoxia on mature and immature neurons) cell situations. • Keywords: Rat lactotrope cells, Cell energetics, Aerobic and anaerobic pathways, pHi, [Cl−]i
Labels:
Stress:Hypoxia Organism: Rat
Preparation: Intact Cell; Cultured; Primary"Intact Cell; Cultured; Primary" is not in the list (Intact organism, Intact organ, Permeabilized cells, Permeabilized tissue, Homogenate, Isolated mitochondria, SMP, Chloroplasts, Enzyme, Oxidase;biochemical oxidation, ...) of allowed values for the "Preparation" property.
Regulation: Respiration; OXPHOS; ETS Capacity"Respiration; OXPHOS; ETS Capacity" is not in the list (Aerobic glycolysis, ADP, ATP, ATP production, AMP, Calcium, Coupling efficiency;uncoupling, Cyt c, Flux control, Inhibitor, ...) of allowed values for the "Respiration and regulation" property., Aerobic and Anaerobic Metabolism"Aerobic and Anaerobic Metabolism" is not in the list (Aerobic glycolysis, ADP, ATP, ATP production, AMP, Calcium, Coupling efficiency;uncoupling, Cyt c, Flux control, Inhibitor, ...) of allowed values for the "Respiration and regulation" property.
HRR: Oxygraph-2k
