Listar Microbiología por procedencia "UCR::Vicerrectoría de Docencia::Salud::Facultad de Microbiología"
Mostrando ítems 1-20 de 306
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A cryptic palm-pitviper species (Squamata: Viperidae: Bothriechis) from the Costa Rican highlands, with notes on the variation within B. nigroviridis
(2016-07-15)Middle America is one of the most biodiverse regions in the world, harboring an exceptional number of rare and endemic species. This is especially true of Middle American cloud forests, where montane specialists occupy ... -
A fluorescence-activatable reporter of flavivirus NS2B–NS3 protease activity enables live imaging of infection in single cells and viral plaques
(2020-01-09)The genus Flavivirus in the family Flaviviridae comprises many medically important viruses, such as dengue virus (DENV), Zika virus (ZIKV), and yellow fever virus. The quest for thera- peutic targets to combat flavivirus ... -
A Fluorescent Real-Time Plaque Assay Enables Single-Cell Analysis of Virus-Induced Cytopathic Effect by Live-Cell Imaging
(2021-06-22)Conventional plaque assays rely on the use of overlays to restrict viral infection allowing the formation of distinct foci that grow in time as the replication cycle continues leading to countable plaques that are ... -
A geographical sampling method for surveys of mosquito larvae in an urban area using high-resolution satellite imagery
(2008-06-01)Entomological surveys in urban areas are often biased by selecting houses or locations with known high vector densities. A sampling strategy was developed for Puntarenas, Costa Rica, using high-resolution satellite imagery. ... -
A hybrid mathematical modeling approach of the metabolic fate of a fluorescent sphingolipid analogue to predict cancer chemosensitivity
(2018-06)Sphingolipid (SL) metabolism is a complex biological system that produces and transforms ceramides and other molecules able to modulate other cellular processes, including survival or death pathways key to cell fate ... -
A myotoxic Lys49 phospholipase A2-homologue is the major component of the venom of Bothrops cotiara from Misiones, Argentina
(2018-04-27)Bothrops cotiara is a pitviper found in Southeastern Brazil and, scarcely, in the Misiones province of Argentina. In contrast to considerable information available on the venom of the Brazilian snake population, that of ... -
A novel assay for detecting virus-specific antibodies triggering activation of Fcγ receptors
(2013-01-31)IgG responses are crucial in antiviral defence and instrumental for the serodiagnosis of infections. Fcγ receptors (FcγRs), which recognize the Fc-part of IgG, differ regarding their IgG binding affinity, IgG subclass ... -
A Novel Green Chemistry Method for Nonaqueous Extraction and High-Performance Liquid Chromatography Detection of First-, Second-, and Third-Generation Tetracyclines, 4-Epitetracycline, and Tylosin in Animal Feeds
(2012-06)Although tetracyclines and macrolides are common additives for animal nutrition, methods for their simultaneous determination in animal feeds are nonexistent. By coupling an organic extraction and solid-phase extraction ... -
A single exposure of sediment sulphate-reducing bacteria to oxytetracycline concentrations relevant to aquaculture enduringly disturbed their activity, abundance and community structure
(2015-05)Aim: although feed medicated with antibiotics is widely used in animal production to prevent and treat bacterial infections, the effect of these drugs on nontarget anaerobic bacteria is unknown. We aimed to clarify whether ... -
Acanthamoeba genotype T4 keratitis in a patient with Thygeson’s superficial punctate keratitis
(2017-01)A case of amoebic keratitis due to Acanthamoeba genotype T4 is reported. The patient is a 74-year old woman with Thygeson’s superficial punctate keratitis. Corneal scrapings were employed for the diagnosis, which included ... -
Accelerated biodegradation of selected nematicides in tropical crop soils from Costa Rica
(2014)Degradation and mineralization behavior of select ed nematicides was studied in soil samples from fields culti vated with banana, potato, and coffee. Degradation assays in most of the studied soils revealed shorter ... -
Aedes albopictus (Skuse) en la Región Huetar Atlántica de Costa Rica: estudios preliminares sobre ecología larval
(2012)Objetivo: Determinar las características de los hábitats larvales de Ae. albopictus y su culicidofauna asociada en la comunidad “La Primavera”. Métodos: Se realizó una encuesta larval en 20 de 28 casas ubicadas en un área ... -
Amebas de vida libre como agentes de encefalitis en el ser humano
(2014-07)Este artículo de revisión se enfoca en las amebas de vida libre, un tipo de protozoarios que habitan diferentes tipos de suelo y fuentes de agua. Estos organismos tienen dos estadios evolutivos: trofozoíto y quiste, siendo ... -
An electrophoretic study on phospholipase A2 isoenzymes in the venoms of Central American crotaline snakes
(1992)The number and isoelectric points of phospholipase A2 isoenzymes were studied in the venoms of 12 Central American crotaline snakes of the genera Bothrops, Crotalus, Lachesis and Agkistrodon. The study was carried out by ... -
An update on the detection and treatment of Rickettsia felis
(2012-05-22)Rickettsia felis was described as a human pathogen almost two decades ago, and human infection is currently reported in 18 countries in all continents. The distribution of this species is worldwide, determined by the ...