Author: María Cristina García de la Peña

Cambios estacionales en la concentración de azúcares solublesen órganos perennes de nogal [(Carya illinoiensis(Wangenh.) Koch)]

Seasonal changes in soluble sugar concentration in pecan perennial organs(Carya illinoiensis[Wangenh.] Koch)

Luis Manuel Valenzuela Núñez EDWIN AMIR BRICEÑO CONTRERAS JUAN RAMON ESPARZA RIVERA María Cristina García de la Peña GEREMIAS RODRIGUEZ BAUTISTA (2019)

El transporte de azúcares de tejidos de asimilación a tejidos de reserva determina el crecimiento o el almacenamiento reproductivo vegetal. El objetivo fue determinar las concentraciones de azúcares solubles en nogal pecanero crecidos en una huerta ubicada en Torreón, Coahuila, durante las etapas de producción y letargo. Se tomaron muestras de raíz, tallo, rama y brote emitido del año (crecimiento anual) en cuatro árboles adultos. Durante el letargo se observaron mayores concentraciones de azúcares solubles que durante la etapa de producción. La raíz y los brotes anuales tuvieron concentraciones similares, más altas que los otros dos órganos. La menor concentración se encontró siempre en las ramas. El tallo presentó una concentración similar a las ramas durante la etapa de producción, mientras que, en la etapa de letargo, el tallo tuvo mayor concentración de azúcares que las ramas. A pesar de que la raíz presenta las mayores concentraciones de azúcares solubles, el tallo, por su tamaño, acumula la mayor cantidad de azúcares totales a nivel de todo el árbol. Se estimó que el porcentaje de los azúcares solubles del total del carbono contenido en la biomasa representa un valor porcentual de 66%

Transport of sugars from assimilation tissues to reserve tissues determines growth or reproductive storage. The objective wasto determine the concentrations of soluble sugars in pecan tree grown in an orchard located in Torreón, Coahuila, during the stages of production and dormancy. Samples of root, stem, branch, and bud emitted from the year (annual growth) were taken from fouradult trees. During the dormancy higher concentrations of soluble sugars were observed than during the production stage. Rootand annual outbreaks had similar concentrations, higher than the other two organs. The lowest concentration was always found in branches. Stem had a concentration similar to the branches during the production stage, while in the dormant stage, the stem had ahigher concentration of sugars than the branches. Although the root has the highest concentrations of soluble sugars, the stem, by its size, accumulates the greatest amount of total sugars in the whole tree. It was estimated that the percentage ofsolublesugars of the total carbon contained in the biomass represents a percentage value of 66%.

Article

CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA Carbohidratos Frutales Fenología Carbono Carya illinoiensis Carbohydrates Fruit trees Phenology Carbon Carya illinoiensis

Comparison of quality of life among community-dwelling older adults with the frailty phenotype

SERGIO SANCHEZ GARCIA KATIA GALLEGOS CARRILLO María Claudia Espinel Bermúdez SVETLANA VLADISLAVOVNA DOUBOVA ROSALINDA SANCHEZ ARENAS María del Carmen García Peña Antoni Salvà SILVIA CRISTINA BRISEÑO FABIAN (2017)

Purpose: To compare the perception of the quality of life (QOL) of community-dwelling older adults with the phenotype of frailty.

Methods: Cross-sectional analysis of baseline data of the ""Cohort of Obesity, Sarcopenia and Frailty of Mexican Older Adults"" (COSFOMA). Operationalization of frailty was carried out using the phenotype as follows: weight loss, self-report of exhaustion, low physical activity, slow gait, and weakness. QOL was measured using two scales: World Health Organization Quality of Life of Older Adults (WHOQOL-OLD), which is a specific instrument for the elderly population, and Short Form-36 Health Survey (SF-36), a generic instrument to evaluate the QOL related to health. One-way analyses of variance were conducted to assess the differences among the three phenotypes of frailty and QOL perception.

Results: There were 1252 older adult participants who were analyzed; 11.2% (n = 140) had frailty, 50.3% (n = 630) pre-frailty and 38.5% (n = 482) were not frail. The mean (±SD) total score of the WHOQOL-OLD according to the phenotype of frailty was 60.3 (13.9) for those with frailty, 67.4 (12.7) pre-frailty and 72.4 (11.2) not frail (ANOVA, p < 0.001). The mean (±SD) of the SF-36 of the physical and mental component measures the sum, 38.9 (9.9) and 41.9 (11.3) with frailty, 45.7 (9.1) and 46.6 (9.8) pre-frailty, and 49.6 (7.3) and 49.4 (7.9) not frail, respectively (ANOVA, p < 0.001).

Conclusions: Frailty is observed in 1/10 community-dwelling older adults. Those with frailty and pre-frailty had a lower perception of QOL compared with those who were not frail.

Article

MEDICINA Y CIENCIAS DE LA SALUD Ciencias médicas Ciencias clínicas Geriatría Condiciones patológicas, signos y síntomas Procesos patológicos Fragilidad Personas mayores Envejecimiento Calidad de vida Geriatrics Pathological conditions, signs and symptoms Pathologic Processes Frailty Aging Quality of life