Objective: The purpose of the work was to investigate new synthetic compounds imidazolinone-based sulfonamide derivatives as potent and selective enyzme inhibitors. A number synthesized their inhibitory action against acetylcholine esterase (AChE), human (h) carbonic anhydrase (CA) isoforms I II were investigated. Material Method: identity has been confirmed by HRMS, 1H NMR, 13C NMR. pharmacolo...

In vivo experiments were conducted on spiny dogfish (Squalus acanthias) and rainbow trout (Oncorhynchus mykiss) in sea water to determine the potential role of externally oriented or gill boundary layer carbonic anhydrase in carbon dioxide excretion. This was accomplished by assessing pH changes in expired water using a stopped-flow apparatus. In dogfish, expired water was in acid-base disequil...

Homogeneous carbonic anhydrase has been prepared from the erythrocytes of single comb, white Leghorn hens (Gallus domesticus). The procedure involved chloroformethanol precipitation of the hemoglobin, gel filtration of the resulting extract on a Sephadex G-75 column, and ion exchange chromatography of the pooled active fractions from the Sephadex column by salt gradient elution on carboxymethyl...

1. Gill, kidney and blood levels of acetazolamide-sensitive esterase (carbonic anhydrase) activity were estimated at acclimation temperature and at a common temperature (25 degrees C) in rainbow trout acclimated to 2, 10 and 18 degrees C. Plasma levels of sodium, potassium and chloride were also examined for possible acclimatory variations. 2. Plasma sodium and chloride levels, and the sodium:c...

Carbonic anhydrase 2 regulates acid-base homeostasis, and recent findings have indicated a correlation between cellular control of acid-base status and the innate defense of the kidney. Mice deficient in carbonic anhydrase 2 (Car2(-/-) mice) have metabolic acidosis, impaired urine acidification, and are deficient in normal intercalated cells. The objective of the present study was to evaluate t...

The ability of rat liver zinc-thionein to donate its metal to the apo-enzymes of the zinc enzymes horse liver alcohol dehydrogenase, yeast aldolase, thermolysin, Escherichia coli alkaline phosphatase and bovine erythrocyte carbonic anhydrase was investigated. Zinc-thionein was as good as, or better than, ZnSO(4), Zn(CH(3)CO(2))(2) or Zn(NO(3))(2) in donating its zinc to these apo-enzymes. Apo-(...

Brinzolamide and dorzolamide are highly specific topical carbonic anhydrase inhibitors (CAIs). They lower intraocular pressure (IOP) by reducing the rate of aqueous humour formation without serious side effects. Although systemic CAIs are the most potent medications for lowering intraocular pressure for conditions with ocular hypertension, many cases with adverse systemic reactions have been re...

Inhibitors of carbonic anhydrase (CA) have complex effects on respiration. Many cells and tissues that are involved in the control of breathing contain various isoforms of CA, e.g., red cells, carotid bodies, lung and brain capillary endothelial cells, muscle and neurons closely associated with central chemoreceptors. 1-9 In human and cats, low intravenous doses of acetazolamide have both stimu...