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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.
Common side effects include eye discomfort, eye redness, taste changes, and blurry vision. [3] Serious side effects may include allergic reactions and heart failure. [3] Use is not recommended in those with asthma, a sulfonamide allergy, or a slow heart rate. [3] [7] Dorzolamide is a carbonic anhydrase inhibitor and timolol is a beta blocker. [3]
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.
Serious side effects include Steven Johnson syndrome. [3] Those allergic to sulfonamides may be allergic to dorzolamide. [3] [5] Use is not recommended in pregnancy or breastfeeding. [5] 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 ...
Topiramate selectively inhibits cytosolic (type II) and membrane-associated (type IV) forms of carbonic anhydrase. Its action on carbonic anhydrase isoenzymes may contribute to the drug's side effects, including its propensity to cause metabolic acidosis and calcium phosphate kidney stones.
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.
Inhibition of carbonic anhydrase in the ciliary processes of the eye decreases aqueous humor secretion and thus lowers the intraocular pressure in the anterior chamber, presumably by reducing the rate of formation of bicarbonate ions with subsequent reduction in sodium and fluid transport; this may alleviate the effects of open-angle glaucoma.
Carbonic anhydrase IX (CA9/CA IX) is an enzyme that in humans is encoded by the CA9 gene. [ 5 ] [ 6 ] [ 7 ] It is one of the 14 carbonic anhydrase isoforms found in humans and is a transmembrane dimeric metalloenzyme with an extracellular active site that facilitates acid secretion in the gastrointestinal tract. [ 8 ]