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Astrocytes respond to energetic demands by upregulating glycolysis, lactate production, and respiration. This study addresses the role of respiration and calcium regulation of respiration as part of the astrocyte response to the workloads caused by extracellular ATP and glutamate. Extracellular ATP (100 μM to 1 mM) causes a Ca2+‐dependent workload and fall of the cytosolic ATP/ADP ratio which acutely...
The ADP/ATP and ATP-Mg/Pi carriers are widespread among eukaryotes and constitute two systems to transport adenine nucleotides in mitochondria. ADP/ATP carriers carry out an electrogenic exchange of ADP for ATP essential for oxidative phosphorylation, whereas ATP-Mg/Pi carriers perform an electroneutral exchange of ATP-Mg for phosphate and are able to modulate the net content of adenine nucleotides...
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