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2.
Mem. Inst. Invest. Cienc. Salud (Impr.) ; 4(1): 46-48, jun. 2006. tab
Article in Spanish | LILACS | ID: lil-481991

ABSTRACT

La intoxicación por colchicina es una entidad poco común, pero que constituye una emergencia toxicológica extremadamente grave que pone en riesgo la vida del paciente. La intoxicación puede ocurrir por ingestión de tabletas de drogas que contienen colchicina o por ingesta de Colchicumautumnale, que florece en otoño en el Pirineo y es erróneamente colectado en lugar de Alliumursinum. La sobredosis debe ser reconocida tempranamente ya que el abordaje terapéutico debe ser llevado a cabo lo más rápido posible, para lograr un efecto beneficioso para el paciente. En este trabajo se presenta un caso de intoxicación con 50mg de colchicina como tentativa suicida, que evoluciona con falla multiorgánica y posterior buena evolución clínica que genera su alta a los diez días del ingreso al hospital. La falta de relación entre la alta dosis ingerida y la buena evolución de la paciente podrían explicarse por la existencia de polimorfismos en las enzimas involucradas en el metabolismo de esta droga.


Subject(s)
Colchicine/toxicity , Poisoning , Toxicity
3.
Virus Res ; 48(2): 157-63, 1997 May.
Article in English | MEDLINE | ID: mdl-9175254

ABSTRACT

The in vitro evolution of Foot and mouth disease virus (FMDV) A/81/Castellanos/Arg/87 (A/Castellanos/87) was studied by partial biological and biochemical characterization of viral populations selected after 25 passages on secondary fetal bovine kidney cell monolayers. These passages were performed in the presence or absence of immune pressure exerted in the form of antiviral polyclonal serum. While the viral populations passaged in the absence of immune pressure acquired characteristics such as antigenic heterogeneity, VP1 amino acid modification and plaque size reduction, the populations selected after immune pressure also presented both neutralizing resistance and attenuation for suckling mice. The comparison with other previously studied FMDV strains suggests that FMDV A/Castellanos/87 adopts a differential response to immunological pressure and other selective forces. In addition, the sequencing analysis of viral selected populations shows a restriction in the number and type of amino acid replacements tolerated by FMDV capsid proteins.


Subject(s)
Aphthovirus/genetics , Amino Acid Sequence , Animals , Animals, Newborn , Antigenic Variation/immunology , Antigens, Viral/chemistry , Antigens, Viral/genetics , Antigens, Viral/immunology , Aphthovirus/immunology , Aphthovirus/pathogenicity , Base Sequence , Capsid/chemistry , Capsid/genetics , Capsid/immunology , Capsid Proteins , Cattle , Cell Line , Epitopes/chemistry , Epitopes/genetics , Evolution, Molecular , Mice , Sequence Analysis, DNA
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