RESUMO
The SO2 adsorption-desorption capacity at room temperature and 1 bar of the metal-organic polyhedron MOP-CDC was investigated. In addition, the qualitative solid-state absorption-emission properties of this material (before and after SO2 exposure) were measured and tested, and it demonstrated remarkable capability for SO2 detection. Our results represent the first example of fluorimetric SO2 detection in a MOP.
Assuntos
Metais , AdsorçãoRESUMO
Anthocyanins are plant pigments derived from the phenylpropanoid pathway which are produced in many different species, contributing to defense against stresses by their antioxidant properties. Cultivated tomatoes cannot synthesize flavonoids; however, wild tomatoes such as Solanum chilense and Solanum lycopersicoides have anthocyanin pigmented skin. Other wild tomato species such as Solanum peruvianum have been poorly studied concerning anthocyanin accumulation in the fruit. This research is the first to address the regulation of anthocyanin biosynthesis mediated by drought stress and light radiation in S. peruvianum fruit. Transcript accumulation of SpAN2, encoding for a key MYB type transcription factor for the regulation of anthocyanin biosynthesis, was induced in the fruit of plants exposed to drought treatment. In addition, fruit peel accumulates a greater anthocyanin content in water deficit-treated plants. The expression of SpAN2 was also regulated according to sunlight exposure, reaching a higher expression during maximal daily UV radiation and under controlled UV-B treatments. Similar results were observed for the expression of the late flavonoid biosynthetic gene dihydroflavonol 4-reductase (SpDFR). These results suggest that SpAN2 and SpDFR are involved in anthocyanin biosynthesis under drought stress and UV radiation in S. peruvianum.
RESUMO
Se realizó una revisión bibliográfica sobre el papel que ejerce el tabaquismo como factor de riesgo de las periodontopatías. El periodo de búsqueda de la información estuvo comprendido entre los meses de septiembre 2011 a enero 2012. Se destacó la influencia que ejerce esta práctica en el desarrollo y gravedad de la enfermedad periodontal así como la relación del hábito de fumar con la gingivitis y la periodontitis. También se exploraron en esta revisión aspectos relacionados con el abandono del tabaquismo: las ventajas físicas, psicológicas, económicas inmediatas y a largo plazo que representa esta conducta, así como los procesos y los métodos que en la actualidad se explotan para su abandono.
Assuntos
Humanos , Masculino , Feminino , Doenças Periodontais/etiologia , Fumar/efeitos adversos , Abandono do Hábito de Fumar , Literatura de Revisão como AssuntoRESUMO
Se realizó un estudio observacional descriptivo transversal sobre los efectos farmacológicos del uso agudo de los anestésicos locales en 128 pacientes, atendidos en el servicio de Cirugía Bucal, del Hospital General Provincial Docente Roberto Rodríguez, de Morón; en el período de enero a diciembre del año 2005. En ellos, se precisaron los principales efectos farmacológicos de la Lidocaína al 2 por ciento con Epinefrina, la Lidocaína al 2 por ciento simple y la Mepivacaína al 3 por ciento simple, de modo que en todos los pacientes se logró el efecto anestésico local satisfactoriamente. Solo hubo un 1.6 por ciento de incidencia insatisfactoria, un 10.2 por ciento de iniciación deficiente y un 1.6 por ciento de anestesia dental no óptima. Los cambios cardiovasculares fueron las principales reacciones medicamentosas transoperatorias, mientras que el dolor local y la inflamación fueron los efectos indeseables más frecuentes en el postoperatorio. Ante las reacciones adversas, todos los pacientes recibieron tratamiento médico específico; y no hubo desenlaces fatales, ni secuelas, pues el 100 por ciento de los pacientes logró recuperarse satisfactoriamente de estos eventos.
A descriptive observational cross-sectional study on the pharmacologic effects of the abusive use of the local anesthetics was conducted in 128 patients, assisted at the service of Oral Surgery of the Robert Rodriguez provincial general teaching hospital of Morón City in the time period from January to December 2005. The main pharmacologic effects of Lidocaine (2%) in conjunction with Epinephrine; Lidocaine (2%) simple and Mepivacaine (3%) simple were analyzed, so that in all of the patients the local anesthetic effect was satisfactorily obtained. There was only (1.6%) of satisfactory incidence, (10.2%) of poor initiation and (1.6%) of no optimal dental anesthesia. The cardiovascular changes were the trans-operative adverse effects of drug interactions, whereas local pain and the inflammation were the more frequent undesirable effects in the postoperative period. For these adverse reactions, all the patients received specific medical treatment and there were no fatal outcomes, or sequelae, as (100%) of the patients managed to satisfactorily recover from these events.