Técnicas no-farmacológicas en el manejo del comportamiento ante el tratamiento odontológico del niño

Introducción: Muchas veces la experiencia del niño encuentra la manera de responder ante un problema de una forma más verosímil, siendo más real que se concentre la atención en la clínica del niño. Objetivo: Determinar la efectividad de esas técnicas en el control de la ansiedad en niños ante el tratamiento estomatológico. Métodos: La investigación fue de carácter experimental y cuantitativo, se tomó una población muestral de 16 niños de 6-11 años de edad. Los cuales fueron hechos para la intervención con técnicas no farmacológicas. Resultados: Después de realizado en análisis, se utilizó la prueba t de Student, que constituyó el 56,25 % de los niños del grupo experimental y el 50 % del grupo control se encontraron en el rango de edad de 8-9 años, 31,25 % y 37,5 % entre 6-7 años y el 12,50 % en ambos grupos de 10-11 años respectivamente; a diferencia del grupo control que el 75 % de los niños, presentaban alta ansiedad, y el 68,75 % estaban en una ansiedad moderada. Conclusiones: Las técnicas no farmacológicas son efectivas en el manejo de los comportamientos en la consulta odontológica, a diferencia en niños del grupo control sin esta intervención disminuyen a nivel moderado.

Introduction: Many times the experience of the child finds a way to respond to a problem in a more credible way, being more real than the attention of the child's clinic is combined. Objective: To determine the effectiveness of these techniques in the control of anxiety in children before dental treatment. Methods: It was an experimental and quantitative subject; a sample population of 16 children from 6 to 11 years of age was taken. Which were made for intervention with non-pharmacological techniques. Results: After the analysis, the t-Student test was used, which is 56.25 % of the children of the experimental group and 50 % of the control group are in the age range of 8 to 9 years, 31.25% and 37.5% between 6 to 7 years and 12.50 % in both groups from 10 to 11 years respectively; unlike the control group, 75 % of the children before the care presented high anxiety, after which 68.75 % presented moderate anxiety. Conclusions: Non-pharmacological techniques are effective in managing behaviors in the dental office, unlike children in the control group without this intervention, they decrease to a moderate level.

Habitat-islands in the coastal Atacama Desert: loss of functional redundancy, but not of functional diversity, with decreased precipitation.

BACKGROUND AND AIMS: Aridity is increasing in many regions of the world, but microclimatic conditions may buffer plant communities from the direct effects of decreased precipitation, creating habitat islands. However, reduced precipitation can also impact these communities indirectly by decreasing the suitability of the surrounding habitat, thus limiting incoming propagules and increasing the chances of population decline and species loss. We test whether decreased precipitation results in loss of species and functional diversity within habitat islands, evaluating in particular whether declines in species diversity and abundance are less likely to result in loss of functional diversity if species/individual loss is stochastic (i.e. independent of species/individual traits) and communities/populations are functionally redundant. METHODS: Lomas communities are discrete plant communities embedded in the Atacama Desert, maintained by the microclimatic conditions created by fog. We recorded species and functional diversity in six Lomas communities along a 500 km long precipitation gradient in northern Chile. Functional traits were measured in 20 individuals per species, in those species that accounted for approx. 75 % of the abundance at each site. We calculated functional diversity and functional redundancy of the community, and intraspecific functional variation. KEY RESULTS: Decreased precipitation was associated with lower species diversity and lower species abundances. However, no traits or functional strategies increased or decreased consistently with precipitation, suggesting stochastic species/individual loss. Species with stress-tolerant strategies were predominant in all sites. Although species diversity decreased with decreasing precipitation, functional diversity remained unchanged. Lower functional redundancy in the drier sites suggests that mainly functionally redundant species were lost. Likewise, intraspecific functional variation was similar among communities, despite the lower species abundance in drier sites. CONCLUSIONS: Decreased precipitation can impact habitat island communities indirectly by decreasing the suitability of the surrounding habitat. Our results support the idea that a stochastic loss of species/individuals from functionally redundant communities and populations does not result in loss of functional diversity.

[Description of an acidic peptidase, insensitive to classical inhibitors, in protein extracts of Trypanosoma cruzi, from a rural area of Venezuela, where Chagas disease is endemic]. / Una peptidasa ácida, insensible a inhibidores clásicos, en extractos proteicos de Trypanosoma cruzi, proveniente de una zona rural de Venezuela, endémica para la enfermedad de Chagas.

Through two peptidase assay methods, one in liquid-phase and another, in gel-phase (gel zymography), an acid peptidase was detected in protein crude extracts of epimastigotes of Trypanosoma cruzi, from a rural area of Venezuela where Chagas disease is endemic. The peptidase shows activity at a pH range between 2.0 and 2.9. Under the experimental conditions described, the acid peptidase was insensitive to usual concentrations of peptidase inhibitors of the types: serine, cysteine, aspartic and metallopeptidases. Nevertheless, like porcine pepsin at pH 2.9, the peptidase was inhibited in the presence of 5mM DTT.

Una peptidasa ácida, insensible a inhibidores clásicos, en extractos proteicos de Trypanosoma cruzi, proveniente de una zona rural de Venezuela, endémica para la enfermedad de Chagas / Description of an acidic peptidase, insensitive to classical inhibitors, in protein extracts of Trypanosoma cruzi, from a rural area of Venezuela, where Chagas disease is endemic

Mediante dos métodos de ensayo de peptidasas, uno en fase líquida y otro en fase gel (zimografía en geles), se detectó una peptidasa, en extractos proteicos crudos de epimastigotes de Trypanosoma cruzi, provenientes de un área rural de Venezuela endémica para el mal de Chagas. La peptidasa mostró actividad en el intervalo de pH comprendido entre 2,0 y 2,9. Bajo las condiciones experimentales descritas, la peptidasa resultó insensible a concentraciones usuales de inhibidores clásicos de peptidasas de tipo: serina, cisteína, metalo-peptidasas y aspártico. No obstante, a semejanza de la pepsina porcina a pH 2,9, la peptidasa es inhibida en presencia de 5mM DTT.

Through two peptidase assay methods, one in liquid-phase and another, in gel-phase (gel zymography), an acid peptidase was detected in protein crude extracts of epimastigotes of Trypanosoma cruzi, from a rural area of Venezuela where Chagas disease is endemic. The peptidase shows activity at a pH range between 2.0 and 2.9. Under the experimental conditions described, the acid peptidase was insensitive to usual concentrations of peptidase inhibitors of the types: serine, cysteine, aspartic and metallo-peptidases. Nevertheless, like porcine pepsin at pH 2.9, the peptidase was inhibited in the presence of 5mM DTT.