Jaime Kravzov

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Kynurenine (KYN) is the precursor of kynurenic acid (KYNA), an endogenous antagonist of the glycine site of the NMDA (N-methyl-D-aspartate) receptor. Probenecid (PROB), blocks the excretion of KYNA from the extracellular fluid. KYNA antagonizes the toxic action of quinolinic acid (QUIN), an endogenous NMDA receptor agonist. In this study, we tested the(More)
We tested the ability of dapsone (4,4'-diamino-diphenyl sulfone) to attenuate kainic acid-induced seizures. We observed that 9.375 and 12.5 mg/kg doses of dapsone administered 30 min before a single kainic acid (10 mg/kg) i.p. injection were able to decrease the time of electroencephalographic seizures by 52% and 82%, respectively, as compared with rats(More)
This study investigated the effects of chronic administration of thalidomide on three different neoplasms of ectodermic origin in rodents: 1) chemically induced tumors of the nervous system of rats by transplacental exposure to ethylnitrosourea; 2) transplanted RPMI-1846 melanoma in hamsters and 3) transplanted C6 glioblastoma in rats. No effects were seen(More)
In the present work we established a relationship between some physicochemical properties of two different batches of Prussian blue (PB) and their in vivo efficacy as an antidote against thallium poisoning. The physicochemical properties studied were crystallite size and thallium-adsorbing capacity. One of the batches was synthesized and the other was(More)