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A primeval mechanism of tolerance to desiccation based on glycolic acid saves neurons from ischemia in mammals by reducing intracellular calcium-mediated excitotoxicity
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A primeval mechanism of tolerance to desiccation based on glycolic acid saves neurons from ischemia in mammals by reducing intracellular calcium-mediated excitotoxicity
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A primeval mechanism of tolerance to desiccation based on glycolic acid saves neurons from ischemia in mammals by reducing intracellular calcium-mediated excitotoxicity
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Paper
A primeval mechanism of tolerance to desiccation based on glycolic acid saves neurons from ischemia in mammals by reducing intracellular calcium-mediated excitotoxicity
2021
Overview
Stroke is the second leading cause of death and disability worldwide. Current treatments, such as pharmacological thrombolysis or mechanical thrombectomy, re-open occluded arteries but do not protect against ischemia-induced damage that has already occurred before reperfusion or ischemia/reperfusion-induced neuronal damage. It has been shown that disrupting the conversion of glyoxal to glycolic acid (GA) results in a decreased tolerance to anhydrobiosis in C. elegans dauer larva, while GA itself can rescue this phenotype. During the process of desiccation/rehydration, a metabolic stop/start similar to the one observed during ischemia/reperfusion occurs. In this study, we tested the protective effect of GA in different ischemia models, including commonly used stroke models in mice and swine. Our results show that GA, given during reperfusion, strongly protects against ischemic damage and improves the functional outcome. We provide evidence that GA exerts its effect by counteracting the glutamate-dependent increase in intracellular calcium during excitotoxicity. These results suggest that GA treatment has the potential to reduce the mortality and disability caused by stroke in patients. Competing Interest Statement FP-M has a patent pending on the use of glycolic acid in ischemia. DG, PW, and MJ are co-owners of Ti-com, which performed swine experiments. All other authors declare no competing interests. Footnotes * New title, re-wrote the text after adding experiments in swine.
