Lettuce is one of the most suitable plant species to grow indoor or in a Plant Factory with Artificial lighting (PFAL) system, due to its short height and the relatively low light saturation point. Red lettuces are highly cultivated in PFALs, highly appreciated for its unique pigmentation and antioxidant activity, especially, the anthocyanin content that gives it the red color. However, red lettuces cultivated with PFAL in controlled environments face the challenge of having low anthocyanin content due of the lack of ultraviolet (UV) light that is necessary for its production. In this study, two red-lettuce cultivars ‘Annapolis’ and ‘Salanova’ were grown in a plant factory with LEDs (light-emitting diode) and UV light treatments to compare their growth trajectory and nutritional characteristics. Other characteristics such as Fresh Weight (FW) and total leaf area were measured to evaluate the influence of UV light in the lettuce growth. The nutritional quality of lettuces was assessed by measuring anthocyanins and polyphenols contents using a microplate reader and their ascorbic acid content measured via a reflectometer. Fresh Weight (FW), leaf area and leaf thickness under the conditions of this study, showed no effect (p>0.05) on the plants growth with the incorporation of UV radiation. However, the incorporation of UV light increased the functional components in ‘Annapolis’ and ‘Salanova’ lettuces. The polyphenol and anthocyanins contents in both lettuce cultivars showed significant differences (p<0.05). For ascorbic acid content, a significant difference was found only for ‘Annapolis’ lettuce. The incorporation of UV light can increase the functional ingredients such as polyphenols and anthocyanins without growth suppression for ‘Salanova’ cultivar. UV light increased polyphenol and anthocyanins contents in both cultivars, making them suitable cultivars for PFAL under the growth conditions used in this experiment. These results taken together can be used to improve the accumulation of functional ingredients in red lettuces without growth suppression incorporating UV light and that could be suitable for production in PFALs.
Se presenta el caso de un paciente masculino de 8 meses, que es referido del Hospital de Sololá. Presentando historia de tos y fiebre crónica, iniciando tras la exposición a familiar positivo para tuberculosis. A la llegada al hospital, paciente se nota clínicamente enfermo, con presencia de roncus y sibilancias, asociadas a anemia y trombocitopenia. En estudios de imagen, lesiones sugestivas de tuberculosis posprimaria fueron apreciadas, por lo que se realizaron estudios microbiológicos, dando positivo para bacilos de tuberculosis. Llamó la atención, la rápida progresión de la enfermedad y la rara presentación para la edad del paciente.
Se presenta el caso de un paciente masculino de 1 mes de edad, conocido por la Unidad Nacional de Oftalmología, Guatemala, quien padece de criptoftalmos congénito bilateral y hallazgos compatibles con dacriocistitis. Por lo es referido para recibir el tratamiento correspondiente.
Listeria monocytogenes, es una bacteria saprófita, ampliamente distribuida en el ambiente y, por su gran capacidad de sobrevivir en temperaturas o pH extremos, capaz de contaminar una amplia variedad de comidas y bebidas. La infección por Listeria monocytogenes produce normalmente síntomas leves y autolimitados en la población general sana, aunque ha sido responsable de grandes brotes alimentarios con importantes consecuencias sociosanitarias. Se presenta caso de paciente recién nacido, producto de parto extrahospitalario, quien presentó sepsis por Listeria monocytogenes, en un hospital de referencia de tercer nivel.
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