Persona:
Pellón Suárez de Puga, Ricardo

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0000-0002-4099-7621
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Pellón Suárez de Puga
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Ricardo
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2019 - 201912020 - 20233
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Autor: Paz Regidor, Ana María de × search.filters.applied.f.itemDepartamento: Psicología Básica I ×

Resultados de la búsqueda

Mostrando 1 - 4 de 4
  • Miniatura
    Publicación
    Socialization, and its modulation by sex, on the development and recovery of activity-based anorexia in rats
    (Elsevier, 2023-07-17) Martínez Herrada, Antonio; Paz Regidor, Ana María de; Pellón Suárez de Puga, Ricardo
    The activity-based anorexia (ABA) animal model has been used in the laboratory to study the role of excessive physical activity in the manifestation of anorexia nervosa (AN) in humans. Factors of social context are crucial in human health and the emergence of many psychological disorders, which have also been observed in studies using different mammal species that, like human beings, set their lives in groups. In the present study, the animals’ social condition was manipulated to observe the effect of socialization in ABA development, and the possible different influence of the variable sex on the phenomenon. Eighty Wistar Han rats were distributed into four male and four female groups with 10 subjects each, manipulating social conditions (group housing or social isolation) and physical activity (access or not to a running wheel). Throughout the procedure, all groups had food restricted to 1 h/day during the light period. Furthermore, ABA experimental groups with access to the running wheel had two periods of access to the wheel of 2 h each, one before and the other after the food period. In this experiment, socialized rats were less vulnerable to weight loss during the procedure, although there were no differences between the ABA groups. Moreover, social enrichment was shown to be an enabling variable of the animals’ recovery after their withdrawal from the procedure, with this effect being more pronounced in females. The results in this study suggest the need to further in the analysis of the role of socialization in the development of ABA.
  • Miniatura
    Publicación
    Activity-Based Anorexia
    (Springer, 2020) Paz Regidor, Ana María de; Vidal García, Pedro; Pellón Suárez de Puga, Ricardo; Springer
  • Miniatura
    Publicación
    La anorexia nerviosa vista desde los modelos de conducta animal
    (Universidad Nacional Autónoma de México, 2023-12-14) Paz Regidor, Ana María de; Pellón Suárez de Puga, Ricardo; Universidad Nacional Autónoma de México
    El modelo de anorexia basada en actividad (ABA) es una herramienta privilegiada investigación de la anorexia nerviosa (AN) con un análogo animal de laboratorio. A raíz del auge de las neurociencias, su utilización como herramienta para tratar de esclarecer los posibles factores desencadenantes y de susceptibilidad del trastorno, se ha extendido profusamente hacia áreas biomédicas, trasladando el nivel de explicación a los mecanismos fisiológicos y neurobiológicos involucrados en el proceso. Sin embargo, esto no se ha traducido en un consenso generalizado sobre las causas de la AN, ni en los enfoques terapéuticos y farmacológicos más efectivos para su tratamiento. Quizás sea prudente ahora dar un paso atrás y reflexionar sobre la propia validez y pertinencia del modelo, preguntándose qué es lo que modeliza. En esta suerte de vuelta a los orígenes, se pone el foco en la manipulación de la entrega de comida, el acceso a la actividad y las condiciones del ambiente externo e interno de los animales. Se revitaliza igualmente el enfoque teórico que destaca la funcionalidad de las conductas observadas en ABA en el marco amplio de las conductas inducidas por la ocurrencia intermitente de eventos reforzantes.
  • Miniatura
    Publicación
    Exercise, diet, and the reinforcing value of food in an animal model of anorexia nervosa
    (SAGE, 2019) Paz Regidor, Ana María de; Vidal García, Pedro; Pellón Suárez de Puga, Ricardo; SAGE
    Activity-based anorexia (ABA) develops when laboratory rats are subjected to a single meal per day and have access to an activity wheel for the remaining time. Here, we studied the contribution of exercise and diet to the reinforcing value of food during ABA development. Three groups of eight adult male Wistar rats were used: an ABA group with 21.5 hr (then 22 hr) of wheel access and 1 hr (then 30 min) of food access, a control group with the same time exposure to food but without exercise, and a yoked group to the ABA in terms of weight loss. Rats were daily tested on a progressiveratio schedule to measure their motivation for food. ABA rats gradually reduced their body weight more than the food control group. Animals steadily increased their breaking points in parallel to losses in body weight, but no significant differences were found between groups. Adult rats can develop ABA, but their loss in weight neither resulted in a decrease of food intake nor in the motivation to obtain it.