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The drug is occasionally used on an intermittent basis to prevent seizures in catamenial epilepsy. [10] The sulfur-containing antiseizure and antimigraine drug topiramate is a weak inhibitor of carbonic anhydrase, particularly subtypes II and IV. [11] Whether carbonic anhydrase inhibition contributes to its clinical activity is not known.
Sultiame (or sulthiame) is a sulfonamide and inhibitor of the enzyme carbonic anhydrase. It is used as an anticonvulsant and in recent studies showed promise in reducing sleep disordered breathing and other symptoms of obstructive sleep apnea (OSA).
Dorzolamide is a human carboanydrase II inhibitor. [11] Inhibition of carboanhydrase in the ciliary processes of the eye decreases aqueous humor secretion supposedly by decreasing the formation rate of bicarbonate ions. [12] This results in reduction in both sodium and fluid transport. Timolol is a non-selective beta-adrenergic antagonist. [13]
It is a carbonic anhydrase inhibitor and works by decreasing the production of aqueous humor. [3] Dorzolamide was approved for medical use in the United States in 1994. [3] It is available as a generic medication. [5] In 2022, it was the 201st most commonly prescribed medication in the United States, with more than 2 million prescriptions. [6] [7]
For example, carbonic anhydrase produces acid in the stomach lining. In the kidney, the control of bicarbonate ions influences the water content of the cell. The control of bicarbonate ions also influences the water content in the eyes. Inhibitors of carbonic anhydrase are used to treat glaucoma, the excessive build-up of water in the eyes.
Dichlorphenamide as a carbonic anhydrase inhibitor is used for the treatment of acute angle closure glaucoma. While Dichlorphenamide does contain two sulfate groups within the structure, it falls under the class of a first generation carbonic anhydrase Inhibitor.
Acetazolamide is a carbonic anhydrase inhibitor, hence causing the accumulation of carbonic acid. [12] Carbonic anhydrase is an enzyme found in red blood cells and many other tissues that catalyses the following reaction: [26] H 2 CO 3 ⇌ H 2 O + CO 2. hence lowering blood pH, by means of the following reaction that carbonic acid undergoes: [27]
Brinzolamide is a carbonic anhydrase inhibitor (specifically, carbonic anhydrase II). Carbonic anhydrase is found primarily in erythrocytes (but also in other tissues including the eye). It exists as a number of isoenzymes, the most active of which is carbonic anhydrase II (CA-II).