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b-Ionone Modulates the Expression of miRNAs and Genes Involved in the Metastatic Phenotype of Microdissected Persistent Preneoplastic Lesions in Rats Submitted to Hepatocarcinogenesis
(2016)MicroRNAs (miRNAs) are post-transcriptional gene expression regulators which expression is frequently altered in hepatocellular carcinoma (HCC). b-ionone (bI) is noted for its ability to inhibit persistent preneoplastic ... -
Backbone Flexibility Controls the Activity and Specificity of a Protein−Protein Interface: Specificity in Snake Venom Metalloproteases
(2010-07-09)Protein-protein interfaces have crucial functions in many biological processes. The large interaction areas of such interfaces show complex interaction motifs. Even more challenging is the understanding of (multi)specificity ... -
Bacterial communities in residential wastewater treatment plants are physiologically adapted to high concentrations of quaternary ammonium compounds
(2023-08-28)Benzalkonium chloride (BAC) is a quaternary ammonium compound (QAC) widely used as the active ingredient of disinfectants. Its excessive discharge into wastewater is constant and in high concentrations, likely affecting ... -
Bacterial Sphingomyelinases and Phospholipases as Virulence Factors
(2016-06-15)Bacterial sphingomyelinases and phospholipases are a heterogeneous group of esterases which are usually surface associated or secreted by a wide variety of Gram-positive and Gram-negative bacteria. These enzymes hydrolyze ... -
Bacterias multirresistentes a los antibióticos aisladas de niños hospitalizados de "alto riesgo"
(Revista Médica del Hospital Nacioanl de Niños Dr. Carlos Sáenz, 1978)Between January and September, 1977, 43 strains of Klebslella-Enterobac-ter, 17 of Pseudomonas and 6 of Escherlchla coli —all resistant to several drugs—were isolated from 66 children hospitalized in the National Children's ... -
Bactericidal activity of Lys49 and Asp49 myotoxic phospholipases A2 from Bothrops asper snake venom: synthetic Lys49 myotoxin II-(115-129)-peptide identifies its bactericidal region
(1998)Mammalian group-II phospholipases A2 (PLA2) of inflammatory fluids display bactericidal properties, which are dependent on their enzymatic activity. This study shows that myotoxins II (Lys49) and III (Asp49), two group-II ... -
Bactericidal and anti-endotoxic properties of short cationic peptides derived from a snake venom Lys49 phospholipase A2
(2005)The activities of short synthetic, nonhemolytic peptides derived from the C-terminal region of myotoxin II, a catalytically inactive phospholipase A2 homologue present in the venom of the snake Bothrops asper, have been ... -
Bacteriemia por Staphylococcus aureus. Un abordaje inicial simplificado
(2017-11)El Staphylococcus aureus es un germen causante de infecciones severas que ponen en riesgo la vida de los pacientes. La bacteriemia constituye una infecciones, con un abordaje y tratamiento que a menudo resultan complejo La ... -
Bacteriemias asociadas a accesos venosos en hemodiálisis
(2023)Resumen ejecutivo Antecedentes: debido a su estado de inmunocompromiso, los pacientes en hemodiálisis tienen mayor riesgo de infección con respecto a la población en general y con enfermedad renal crónica. La infección ... -
Baja endemicidad de parásitos intestinalesen tres distritos de Puriscal
(1985)A study of the prevalence of intestinal parasites among 44 family units (198 individuals) in three Costa Rican rural districts was conducted by the Institute for Health Research (INISA). A very low prevalence of all ... -
Barreras y facilitadores relacionados con el diagnóstico de la lepra en Costa Rica
(2020-06)Objetivo: analizar barreras y facilitadores relacionados con el diagnóstico de la lepra en Costa Rica, desde la perspectiva de la persona con la enfermedad y en el contexto de la vida cotidiana. Métodos: se llevó a cabo ... -
Base de datos para "Las ecuaciones predictoras de frecuencia cardiaca máxima no superan prueba clave de validación externa"
(2023-11-30)Las ecuaciones de frecuencia cardiaca máxima (FCmax) se han utilizado por su fácil obtención y practicidad, en comparación con las pruebas de esfuerzo. Sin embargo, la ecuación más conocida “220-edad” presenta baja fiabilidad ... -
Bases fisiológicas de la analgesia: Desde la modulación periférica hasta la regulación cortical
(2020)La analgesia ha sido un objetivo terapéutico a lo largo de los años, y se ha estudiado con énfasis en la capacidad propia del organismo de hacer sentir alivio parcial o total del dolor ante la presencia de estímulos ... -
Bases moleculares del reconocimiento de antígenos
(1999)Aunque todos los organismos pertenecientes al reino animal poseen una serie de mecanismos inmunitarios que persiguen mantener su integridad y rechazar la invasión de material foráneo, solo los vertebrados cuentan con un ... -
Bases teórico-conceptuales para el análisis de inequidades sociales en salud: una discusión
(2019-09)Las Inequidades Sociales en Salud (ISS) continúan representando un gran reto para la salud pública en los diferentes países del mundo. Por su parte, el estudio, análisis y generación de conocimiento en esta materia ha sido ... -
Behavioral and neurochemical characterization of maternal care effects on juvenile Sprague–Dawley rats
(2013)Maternal care represents a major constituent of early life environment and has the potential to modulate critical neurobehavioral responses to stress. The aim of the present study was to determine the effects of naturally ... -
Behavioral asymmetries and recovery in rats with different degrees of unilateral striatal dopamine depletion
(1994-11)A detailed behavioral analysis during the first postoperative week was performed in rats which had sustained various degrees of unilateral neostriatal dopamine (DA) lesions by administration of the neurotoxin 6-hydroxydopamine ...