Browsing Artículos Científicos by Title
Now showing items 321-340 of 598
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Hipoadrenocorticismo canino: un reto diagnóstico
(Universidad Nacional, Costa Rica, 2017)El hipoadrenocorticismo, o enfermedad de Addison, representa un gran desafío diagnóstico por su similitud con varias patologías, tanto en su presentación clínica como en los hallazgos de laboratorio. Se recibió ... -
Histopathological findings of infections caused by canine distemper virus, Trypanosoma cruzi, and other parasites in two free-ranging White-nosed Coatis Nasua narica (Carnivora: Procyonidae) from Costa Rica
(Zoo Outreach Organisation, 2021-01-26)Canine distemper virus (CDV) causes systemic infections and immunosuppression in carnivores, which subsequently makes animals highly susceptible to opportunistic infections. Although Trypanosoma cruzi infects procyonids, ... -
Host life history strategy, species diversity, and habitat influence Trypanosoma cruzi vector infection in changing landscapes
(PLOS Neglected Tropical Diseases, 2012-11-15)Background: Anthropogenic land use may influence transmission of multi-host vector-borne pathogens by changing diversity, relative abundance, and community composition of reservoir hosts. These reservoir hosts may have ... -
Hot temperatures can force delayed mosquito outbreaks via sequential changes in Aedes aegypti demographic parameters in autocorrelated environments
(Elsevier B.V, 2014)Aedes aegypti L. (Diptera: Culicidae) is a common pantropical urban mosquito, vector of dengue, Yellow Fever and chikungunya viruses. Studies have shown Ae. aegypti abundance to be associated with envi ronmental fluctuations, ... -
Human Brucella melitensis infections in southern Vietnam
(European Society of Clinical Microbiology and Infectious Diseases, 2017-06-29)Brucellosis is a collective term for infections caused by small Gram-negative coccobacilli belonging to genus Brucella. This genus incorporates the well-described animal pathogens Brucella melitensis, Brucella abortus, ... -
Human neutrophils are resistant to Clostridioides difficile toxin B
(Elsevier, 2022-03-21)Objective: The main objective of this study was to evaluate the glucosyltransferase activity of C. difficile TcdB on the activity of human PMNs. Methods: To better understand the interaction between PMNs and TcdB, PMNs ... -
Hydroxycinnamic acid derivatives as antioxidant food and its implications on management and prevention of Diabetes mellitus
(International Journal of Advanced Research and Development, 2020-07-03)Antioxidant rich foods have been widely used as defenders of the body against excessive oxidative damage and preventing different chronic diseases among them, the Diabetes. In the food industry, the synthetic antioxidants ... -
Identification and antimicrobial susceptibility of obligate anaerobic bacteria from clinical samples of animal origin
(Anaerobe, 2015-09-14)The etiology of veterinary infectious diseases has been the focus of considerable research, yet relatively little is known about the causative agents of anaerobic infections. Susceptibility studies have documented the ... -
If You're Not Confused, You're Not Paying Attention: Ochrobactrum Is Not Brucella
(American Society for Microbiology, 2023-07-03)Bacteria of the genus Brucella are facultative intracellular parasites that cause brucellosis, a severe animal and human disease. Recently, a group of taxonomists merged the brucellae with the primarily free-living, ... -
Ileitis y colitis piogranulomatosa en un mono ardilla (Saimiri oerstedii) asociada con Prosthenorchis elegans
(Universidad Nacional, Costa Rica, 2012-09-16)Un mono ardilla (Saimiri oerstedii), adulto, macho con paresis posterior fue remitido al Laboratorio de Pa- tología de la Escuela de Medicina Veterinaria de la Universidad Nacional. El mono presentaba peritonitis, adherencias ... -
Impacto de la Pandemia por SARS-CoV2 sobre la Educación
(Universidad Nacional, Costa Rica, 2020-12-01)Se describe el impacto de la pandemia por SARS-CoV2 sobre la educación y se propone algunos escenarios donde la Universidad Nacional puede contribuir a mitigar el daño y a participar en la construcción del escenario ... -
In search of a bacterial spedes definition
(Universidad de Costa Rica., 1997)The bacterial species concept was examined within the framework of plant and animal associated a-2 proteobacteria, taking into consideration the phylogenetic, taxonomic and biological approaches as well as the microbiologists' ... -
In vitro activity of thienyl-2-nitropropene compounds against Trypanosoma cruzi
(Memórias do Instituto Oswaldo Cruz, 2009-11)The in vitro activity of four 2-nitropropene derivatives, 1-(3-benzothienyl)-2-nitropropene (N1), 1-(3-thienyl)-2- nitropropene (N2), 1-(5-bromo-2-thienyl)-2-nitropropene (N3) and 1-(4-bromo-2-thienyl)-2-nitropropene (N4), ... -
In vivo animal models confrm an increased virulence potential and pathogenicity of the NAP1/RT027/ST01 genotype within the Clostridium difcile MLST Clade 2
(BioMed Central, 2020-09-22)Background: Based on MLST analyses the global population of C. difcile is distributed in eight clades, of which Clade 2 includes the “hypervirulent” NAP1/RT027/ST01 strain along with various unexplored sequence types ... -
In vivo proteolytic degradation of the Escherichia coli acyltransferase HlyC
(The American Society for Biochemistry and Molecular Biology, 2001-05-18)Escherichia coli hemolysin (HlyA) is the prototype toxin of a major family of exoproteins produced by Gram-negative bacteria known as “repeats in toxins.” Only fatty acid-acylated HlyA molecules at residues Lys564 and ... -
In-vitropredatory activity of nematophagous fungi from Costa Rica with potential use for controlling sheep and goat parasitic nematodes
(Universidad de Costa Rica., 2011-03)In tropical and subtropical regions of the world, parasitic diseases are a main cause of losses in live-stock productivity. The increased acquired resistence to anthelmintics by gastrointestinal nematodes, requires biological ... -
Increased adult Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae) abundance in a dengue transmission hotspot, compared to a coldspot, within Kaohsiung City, Taiwan
(MDPI, 2018-08-13)The assumption that vector abundance differences might drive spatial and temporal heterogeneities in vector-borne disease transmission is common, though data supporting it is scarce. Here, we present data from two common ... -
Indian Ocean Dipole and Rainfall Drive a Moran Effect in East Africa Malaria Transmission
(Oxford University Press, 2012-06-15)Background. Patterns of concerted fluctuation in populations—synchrony—can reveal impacts of climatic variability on disease dynamics. We examined whether malaria transmission has been synchronous in an area with a common ... -
Indian Ocean Dipole drives malaria resurgence in East African highlands
(SCIENTIFIC REPORTS, 2012-02-16)Malaria resurgence in African highlands in the 1990s has raised questions about the underlying drivers of the increase in disease incidence including the role of El-Nin ̃o-Southern Oscillation (ENSO). However, climatic ... -
Indices de similitud entre taxocenosis de t1ebótomos (Diptera: Psychodidae) en un área endémica de leishmaniasis cutánea en Costa Rica
(Universidad de Costa Rica, 1993-12-01)A comparison of diversity between eight Costa Rican taxocenosis of phlebotorninae sandflies was made with the Sorensen sirnilarity coefficient. Sites Agua Blanca-Chirraca (C = 0.68), Ceiba Este-Chirraca (C = 0.66), La ...