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Pharmacological Inhibition of Carbonic Anhydrases with a Positively Charged Pyridinium Sulfonamide Phenocopies the Neuroprotective Effects of Genetic Ablation in a Murine Setting of Oxygen/glucose Deprivation Followed by Re-oxygenation and Is...

Abstract

Carbonic anhydrases constitute a family of metalloenzymes vital for maintaining acid-base balance and regulating pH in physio-pathological processes. These findings suggest carbonic anhydrases as potential therapeutic targets for treating pH-associated disorders, including cerebral ischemia, to mitigate hypoxia- and reoxygenation-induced neuronal damage. A focus on carbonic anhydrase IX showed that ischemic stress altered subcellular distributions of this enzyme in rodent neuronal populations. Given the enzyme's canonical membrane localization, we implemented pharmacological inhibition using a membrane-impermeant sulfonamide inhibitor in neuronal models of brain ischemia. The treatments exerted neuroprotective effects on neurons from knockout mice. Moreover, administration of the sulfonamide inhibitor to rats subjected to transient middle cerebral artery occlusion decreased infarct volumes and improved neurological deficits. Our results support the involvement of carbonic anhydrase IX in postischemic damage and pave the way for possible pharmacological interventions with selective inhibitors in the management of brain ischemia.

References
1.
Kniep E, Roehlecke C, Ozkucur N, Steinberg A, Reber F, Knels L . Inhibition of apoptosis and reduction of intracellular pH decrease in retinal neural cell cultures by a blocker of carbonic anhydrase. Invest Ophthalmol Vis Sci. 2006; 47(3):1185-92. DOI: 10.1167/iovs.05-0555. View

2.
Sisalli M, Secondo A, Esposito A, Valsecchi V, Savoia C, Di Renzo G . Endoplasmic reticulum refilling and mitochondrial calcium extrusion promoted in neurons by NCX1 and NCX3 in ischemic preconditioning are determinant for neuroprotection. Cell Death Differ. 2014; 21(7):1142-9. PMC: 4207481. DOI: 10.1038/cdd.2014.32. View

3.
Lemon N, Canepa E, Ilies M, Fossati S . Carbonic Anhydrases as Potential Targets Against Neurovascular Unit Dysfunction in Alzheimer's Disease and Stroke. Front Aging Neurosci. 2021; 13:772278. PMC: 8635164. DOI: 10.3389/fnagi.2021.772278. View

4.
Rusciano G, Sasso E, Capaccio A, Zambrano N, Sasso A . Revealing membrane alteration in cellsoverexpressing CA IX and EGFR by Surface-Enhanced Raman Scattering. Sci Rep. 2019; 9(1):1832. PMC: 6372785. DOI: 10.1038/s41598-018-37997-3. View

5.
Di Cesare Mannelli L, Micheli L, Carta F, Cozzi A, Ghelardini C, Supuran C . Carbonic anhydrase inhibition for the management of cerebral ischemia: in vivo evaluation of sulfonamide and coumarin inhibitors. J Enzyme Inhib Med Chem. 2015; 31(6):894-9. DOI: 10.3109/14756366.2015.1113407. View