Listar Microbiología por título
Mostrando ítems 939-958 de 1169
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Removal of pesticides and ecotoxicological changes during the simultaneous treatment of triazines and chlorpyrifos in biomixtures
(2017-09)Biopurification systems constitute a biological approach for the treatment of pesticide-containing wastewaters produced in agricultural activities, and contain an active core called biomixture. This work evaluated the ... -
Removal of pharmaceuticals, polybrominated flame retardants and UV-filters from sludge by the fungus Trametes versicolor in bioslurry reactor
(2012-09)Conventional wastewater treatments are inefficient in the removal of many organic pollutants. The pres ence of these contaminants in the final sludge represents a source of environmental pollution due to the increasing ... -
Resistencia a insecticidas en cepas de Aedes aegypti (Diptera: Culicidae) de tres distritos de la Región Pacífico Central de Costa Rica
(2018-12-30)Introducción: Aedes aegypti es vector de virus dengue, chikungunya y Zika en Costa Rica. Su alta incidencia y carencia de vacunas hacen del control vectorial, incluyendo el químico, la única alternativa para disminuir su ... -
Resistencia de Aedes Aegypti (Diptera: Culicidae) a insecticidas organofosforados y piretroides en la localidad de Orotina, Alajuela, Costa Rica
(2019)Objetivos: Determinar la resistencia de una cepa de Aedes. aegypti de Orotina a insecticidas organofosforados (temefós y malatión), y a piretroides (deltametrina, lambda cialotrina y cipermetrina). Métodos: La evaluación ... -
Resurrexit, sicut dixit, alleluia. Snake venomics from a 26-years old polyacrylamide focusing gel
(2012)A 26-year-old dried polyacrylamide gel, cast in presence of an immobilized pH gradient and containing focused proteins from the venoms of a northern black-tailed rattlesnake (Crotalus molossus molossus), and of a western ... -
Una revisión de la literatura acerca de la histoplasmosis: la micosis del viajero
(2021-08)La histoplasmosis es una enfermedad fúngica cosmopolita de tipo granulomatosa sistémica producida por un hongo dimórfico termonutricional conocido como Histoplasma capsulatum. A pesar de que la enfermedad se considera ... -
Rickettsia felis in Ctenocephalides felis from Guatemala and Costa Rica
(2012)Rickettsia felis is an emerging human pathogen associated primarily with the cat flea Ctenocephalides felis.In this study, we investigated the presence of Rickettsia felis in C. felis from Guatemala and Costa Rica. ... -
Role of collagens and perlecan in microvascular stability: exploring the mechanism of capillary vessel damage by snake venom metalloproteinases
(2011-12-08)Hemorrhage is a clinically important manifestation of viperid snakebite envenomings, and is induced by snake venom metalloproteinases (SVMPs). Hemorrhagic and non-hemorrhagic SVMPs hydrolyze some basement membrane (BM) and ... -
Role of cyclooxygenases in oedema-forming activity of bothropic venoms
(2007-04)The venoms of Bothrops asper (BaV) and Bothrops jararaca (BjV), two of the most medically important poisonous snakes of Latin America, cause pronounced oedema in the victims through poorly understood mechanisms. In the ... -
Role of enzymatic activity inmuscle damage and cytotoxicity induced by Bothrops asper Asp49 phospholipase A2 myotoxins: are there additional effector mechanisms involved?
(Peer Journal 2:e569; DOI 10.7717/peerj.569, 2014-09-16)Viperid venoms often contain mixtures of Asp49 and Lys49 PLA2 myotoxin isoforms, relevant to development of myonecrosis. Given their difference in catalytic activity, mechanistic studies on each type require highly ... -
Role of nitric oxide in the local and systemic pathophysiological effects induced by Bothrops asper snake venom in mice
(2006)Objective To assess the role of nitric oxide in the most relevant local and systemic manifestations in mice injected with the venom of the snake Bothrops asper. Mice were pretreated with nitric oxide synthase inhibitors, ... -
Role of the animal model on the pharmacokinetics of equine-derived antivenoms
(2013-08)Antivenom pharmacokinetics has been studied in heterologous models in which the animal species used as immunoglobulin source is different from that used as recipient. In these models, after intravenous administration of ... -
Role of the snake venom toxin jararhagin in proinflammatory pathogenesis: In vitro and in vivo gene expression analysis of the effects of the toxin
(2005-09)To assess the indirect effects of snake venom metalloproteinases (SVMP) on host tissue local necrosis, we investigated the effect of the SVMP jararhagin on the gene expression profiles of human fibroblasts in vitro and ... -
Role of TNF-α, IL-1β and IL-6 in the local tissue damage induced by Bothrops asper snake venom: an experimental assessment in mice
(2005-02)The role of the cytokines TNF-α, IL-1β and IL-6 in the acute local pathological effects induced by Bothrops asper snake venom was assessed in mice. Intramuscular injection of this venom induced increments in IL-1β and IL-6 ... -
Rotavirus en un servicio de neonatología: descripción de una epidemia
(Revista Médica del Hospital Nacional de Niños Dr. Carlos Sáenz Herrera: (2): 159-172, 1980)Durante una epidemia por rotavirus comprobada en la comunidad, se estudió la situación de los recién nacidos en un Servicio de Neonatología, demostrándose la ocurrencia de tres brotes consecutivos en un período de 10 ... -
Rotavirus y campylobacter fetus jejuni asociados a un brote de diarrea en terneros
(Revista de Biología Tropical 32 (2) 303-304, 1984-04-27)Rotaviruses and Campylobacter fetus jejuni are ubiquitous agents of diarrheal disease in animals and humans. Under natural conditions they do not seem to cross inter-species barriers; a zoonosis has not been documented for ... -
S-IgA cholera toxin and rotavirus antibody in human colostrum
(Acta Paediar Scand 68(3): 161-164. 1979, 1979)S-IgA cholera toxin and rotavirus antibody inhuman colostrum. Acta Paediatr Scand, 68: 161, 1979.—S-1gA antibodies against cholera toxin and rotavirus were assayed in 43 colostral samples by means of an enzyme-linked ... -
Salt/Sodium Intake Estimation in children and adolescents of Costa Rica
(2020)The objectives of this study were to estimate sodium intake and to identify the main dietary sources of this nutrient in young people. Cross-sectional study performed in 2685 students from 64 schools and high-schools of ... -
SARS-CoV-2 genomic surveillance in Costa Rica: Evidence of a divergent population and an increased detection of a spike T1117I mutation
(2021)Genome sequencing is a key strategy in the surveillance of SARS-CoV-2, the virus responsible for the COVID-19 pandemic. Latin America is the hardest-hit region of the world, accumulating almost 20% of COVID-19 cases ...