Alberto Fernández de Arriba

Learn More
Microsomal semicarbazide-sensitive amine oxidase (SSAO) from bovine lung was shown to be inhibited by a number of hydrazine derivatives, but the mechanisms of inhibition were found to differ. Hydralazine behaved as an irreversible and partially time-dependent inhibitor with an IC50 value of 1 microM under the conditions used. Phenylhydrazine was found to be(More)
The therapeutic potential of drugs that block the induction of cyclooxygenase-2 has been emphasized. When two 4-trifluoromethyl salicylate derivatives [2-acetoxy-4-trifluoromethyl-benzoic acid (triflusal) and its deacetylated metabolite 2-hydroxy-4-trifluoromethylbenzoic acid (HTB)] were compared with aspirin and sodium salicylate as cyclooxygenase-2(More)
The lung has been shown to be potentially important in the metabolism of amines. Since SSAO has been demonstrated to be active towards some volatile short-chain aliphatic amines in other tissues, the current study determined the specificity and kinetic constants for the metabolism by bovine lung SSAO, of several aliphatic and aromatic amines some of which(More)
The behaviour of some beta-carboline derivatives as inhibitors of monoamine oxidase has been studied in bovine retina. Inhibition was found not to show any significant time dependence. Di- and tetrahydro-beta-carbolines were shown to behave as reversible and competitive inhibitors. In contrast, the fully unsaturated beta-carbolines harmane, harmine and(More)
The contribution of monoamine oxidase (MAO) A, MAO B and semicarbazide-sensitive amine oxidase (SSAO) to the metabolism of dopamine in the bovine retina was studied. These activities were present in the optic nerve, iris, choroid and bovine retina, but they were absent in the lens. SSAO activity towards dopamine was present in the choroid and the retina,(More)
UR-1505 is a novel pentafluoropropoxy derivative of salicylic acid, selected from a series of salicylate derivatives, according to their activity as inhibitors of T-lymphocyte activation. This study describes the anti-inflammatory activity of UR-1505 on trinitrobenzenesulphonic acid-induced colitis in rat, an experimental model that resembles to Crohn's(More)
The activities of MAO-A, MAO-B and the semicarbazide-sensitive amine oxidase (SSAO) were determined in bovine lens, retina, optic nerve, iris and epithelium. No activities were detected in lens but the SSAO activity was found to be rather evenly distributed in the other tissues. The SSAO activities determined with 1 microM benzylamine were about half those(More)
The semicarbazide-sensitive amine oxidase (SSAO) from bovine lung microsomes was activated in a temperature- and time-dependent process. This behaviour was observed when the enzyme was preincubated at 25 degrees C, 37 degrees C and 50 degrees C but not at 4 degrees C. This activation was only observed when benzylamine was used as substrate but not when(More)
  • 1