Buscar
Mostrando ítems 1-10 de 444
Diversas formas de navegar el mundo: El aprendizaje en tiempos de la neurociencia
(2018-10)
Los presentes desafíos en la educación respecto a cómo las personas aprenden, han llevado a la necesidad de integrar información de distintas disciplinas. Si bien el conocimiento neurocientífico genera altas expectativas, ...
Enfermedad de Chagas en Costa Rica: Estudio comparativo en dos épocas diferentes
Chagas disease in Costa Rica: comparative studyin two different stages
(2006)
Para actualizar la situación de la Enfermedad de Chagas en Costa Rica se realizó un estudio serológico y epidemiológico parcial en 4 zonas de riesgo en el país. Un total de 1.561 estudiantes de 6 a 12 años fueron estudiados ...
Zoonotic Agents in Feral Pigeons (Columba livia) from Costa Rica: Possible Improvements to Diminish Contagion Risks
(2018-01)
Most studies on zoonotic agents in pigeons have been conducted in the Palearctic region, but the scarcity of data is notorious in the Neotropical region, where these birds can breed all year around and are in close contact ...
Evaluation of the quality of natural products for the preparation of chamomile and mint tea in Costa Rica
(2017)
In this study, the quality and safety of chamomile and mint tea marketed in Costa Rica were evaluated. Physical and chemical analyses, the presence of toxic substances and pathogenic microorganisms were carried out, to ...
Differential effect of environment enrichment and social isolation on depressive-like behavior, spontaneous activity and serotonin and norepinephrine concentration in prefrontal cortex and ventral striatum
(2008)
Dawley rats were reared from weaning in either social isolation, standard laboratory conditions, or environmental enrichment. Open-field activity
was assessed at postnatal days 37, 65, 93 and 107 and 1 h before the last ...
Proteomic profile of the venom of three dark-colored Tityus (Scorpiones: Buthidae) from the tropical rainforests of Costa Rica
(2023)
Objective: We aimed to elucidate the potential differences in the venom peptide sequences of three Tityus species
from Costa Rican rainforests: T. jaimei, T. championi and T. dedoslargos, compared to T. cf. asthenes ...
Maternal behavior as an early modulator of neurobehavioral offspring responses by Sprague-Dawley rats
(2013)
Maternal care plays an important role as an early modeler of neurodevelopment and brain function,
and its effects remain until adulthood. Such modeling or programming has shown to influence the
stress response and ...
Acanthamoeba genotype T4 keratitis in a patient with Thygeson’s superficial punctate keratitis
Queratitis por Acanthamoeba genotipo T4 en un paciente con queratitis punteada de Thygeson
(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 ...
Depletion of complement enhances the clearance of Brucella abortus in mice
(2018)
Brucellosis is a bacterial disease of animals and humans. Brucella abortus
barely activates the innate immune system at the onset of infection, and this
bacterium is resistant to the microbicidal action of complement. ...
Structure of myotoxin-II, a catalytically inactive Lys49 phospholipase A2 homologue from Atropoides nummifer venom
(2006)
Lys49 snake-venom phospholipase A2 (PLA2) homologues are highly myotoxic
proteins which, although lacking catalytic activity, possess the ability to disrupt
biological membranes, inducing significant muscle-tissue loss ...