Listar Microbiología por título
Mostrando ítems 240-259 de 1169
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Cleavage of the NH2-Terminal Octapeptide of Bothrops asper Myotoxic Lysine-49 Phospholipase A2 Reduces Its Membrane-Destabilizing Effect
(1994-08)Bothrops asper myotoxin II was cleaved with cyanogen bromide to determine the role of NH2-terminal amino acid residues in its ability to destabilize negatively charged liposomes and to induce myonecrosis. After treatment, ... -
Clinical and laboratory alterations in horses during immunization with snake venoms for the production of polyvalent (Crotalinae) antivenom
(1997-01)Six horses were immunized with the venoms of Bothrops asper, Crotalus durissus durissus and Lachesis muta stenophrys for the production of polyvalent (Crotalinae) antivenom. During the immunization, clinical and laboratory ... -
Clinical profiles at the time of diagnosis of COVID-19 in Costa Rica during the pre-vaccination period using a machine learning approach
(2021)Background: The clinical manifestations of COVID-19 disease, caused by the SARS-CoV-2 virus, define a large spectrum of symptoms that are mainly dependent on the human host conditions. In Costa Rica, almost 319 000 cases ... -
Cloning, purification and characterization of nigrelysin, a novel actinoporin from the sea anemone Anthopleura nigrescens
(2019)Actinoporins constitute a unique class of pore-forming toxins found in sea anemones that being secreted as soluble monomers are able to bind and permeabilize membranes leading to cell death. The interest in these proteins ... -
Clostridium perfringens Phospholipase C, an Archetypal Bacterial Virulence Factor, induces the Formation of Extracellular Traps by Human Neutrophils
(2023)Neutrophil extracellular traps (NETs) are networks of DNA and various microbicidal proteins, released to the extracellular space to kill invading microorganisms and prevent their dissemination. However, a NETs excess is ... -
CMV-encoded Fcγ receptors: modulators at the interface of innate and adaptive immunity
(2014-10-07)The constant region of IgG antibodies mediates antiviral activities upon engaging host Fcγ receptors (FcγRs) expressed by a variety of immune cells, such as antibody-dependent cellullar cytotoxcity (ADCC) executed by natural ... -
Coinfecciones bacterianas asociadas a la infección por el virus SARS-CoV-2 y su efecto en la resistencia antimicrobiana
(2023-07)El virus del SARS-CoV-2 con su consecuente cuadro clínico de COVID-19, surgió en China a finales del 2019. En marzo del 2020 se declaró pandemia y se extendió por aproximadamente tres años. En los casos severos de enfermedad ... -
Combined venom gland cDNA sequencing and venomics of the New Guinea small-eyed snake, Micropechis ikaheka
(2014-10-14)The venom arsenal of the New Guinea small-eyed snake, Micropechis ikaheka, was investigated by a joint cDNA sequencing and venomics approach. Twenty-seven full-length DNA sequences encoding novel venom proteins were recovered ... -
Combined venomics, venom gland transcriptomics, bioactivities, and antivenomics of two Bothrops jararaca populations from geographic isolated regions within the Brazilian Atlantic rainforest
(2016-03-01)Bothrops jararaca is a slender and semi-arboreal medically relevant pit viper species endemic to tropical and subtropical forests in southern Brazil, Paraguay, and northern Argentina (Misiones). Within its geographic range, ... -
Combustibles forestales superficiales y riesgo de incendio en dos estadios de sucesión secundaria y bosques primarios en el Parque Nacional Palo Verde, Costa Rica
(2015-06-22)Se cuantificó el combustible forestal superficial de los árboles en pie y del mantillo orgánico. También, se caracterizó la composición florística, en tres tratamientos de estadios sucesionales, de 10-25 años (29,88 ha) ... -
Community richness of amphibian skin bacteria correlates with bioclimate at the global scale
(2019)Animal-associated microbiomes are integral to host health, yet key biotic and abiotic factors that shape host-associated microbial communities at the global scale remain poorly understood. We investigated global patterns ... -
Comparación de dos tubos de extracción de sangre en la determinación bioquímica de 21 analitos: tubo con gel separador Hongyu Medical® y tubo sin gel separador Vacuette®
(2020-12-16)Algunos componentes de los tubos de extracción de sangre pueden generar interferencia en los análisis rutinarios, de ahí la importancia de validar dichos materiales antes de ser implementados en el uso clínico. Se realizó ... -
Comparación de los resultados obtenidos en el Panel de Neumonía Filmarray® de BIOFIRE®, el Gram y el cultivo bacteriano, en muestras de aspirado de tubo endotraqueal, provenientes de pacientes críticos con COVID-19, en el Hospital México del 2020 al 2021
(2023)La neumonía es una enfermedad del tracto respiratorio inferior que puede tener como agente etiológico diferentes microorganismos. Dentro de las neumonías nosocomiales, se encuentra la neumonía asociada a la ventilación ... -
Comparación de pruebas utilizadas para el diagnóstico de aspergilosis invasiva en el laboratorio del Hospital Calderón Guardia de enero del 2019 a junio del 2020: ELISA para la detección de galactomanano y PCR en tiempo real
(2021-06-01)La aspergilosis invasiva (AI) permanece en los últimos años como la principal causa de muerte por enfermedad fúngica invasiva (Pemán & Salavert, 2012). El diagnóstico definitivo de la AI se realiza por medio de una biopsia ... -
Comparación entre inmunización pasiva e inmunización activa como procedimiento para controlar los envenenamientos producidos por la serpiente Bothrops asper (terciopelo) en un modelo canino
(2020)Los accidentes ofídicos en animales domésticos son un problema importante para la garantía del bienestar animal en Costa Rica. En este trabajo se comparó la inmunización pasiva por administración de antivenenos con la ... -
Comparative biochemical characterization of Viperidae snake venoms from Perú reveals two compositional patterns of phospholipase A2 expression
(2020)Snake species within the Bothrops complex (sensu lato) are of medical relevance in Latin America, but knowledge on their venom characteristics is limited, or even unavailable, for some taxa. Perú harbors 17 species of pit ... -
Comparative proteomic analysis of the venom of the taipan snake, Oxyuranus scutellatus, from Papua New Guinea and Australia: Role of neurotoxic and procoagulant effects in venom toxicity
(2012-04-03)The venom proteomes of populations of the highly venomous taipan snake, Oxyuranus scutellatus, from Australia and Papua New Guinea (PNG), were characterized by reverse-phase HPLC fractionation, followed by analysis of ...