Western-style diet changes murinometric and metabolic parameters of rat offspring in time-specific windows / A dieta do estilo ocidental altera parâmetros murinométricos e metabólicos da própria de rat em janelas específicas

Elizabeth do Nascimento, Giselia de Santana Muniz, Amanda Alves Marcelino da Silva, Raquel de Araújo Santana, Diogo Antonio Alves de Vasconcelos, Taisy Cinthia Ferro Cavalcante


The present study evaluated the effects of the western-style diet in the time-specific windows of rodents. Male Wistar rats were divided into three groups fed on a Control diet during all experimental period (CC); a western-style diet after lactation (CW); and a westernized diet throughout entire experimental period (WW). Body weight, food and energy intake, abdominal fat, glucose tolerance, biochemical parameters and serum hormones were evaluated. Higher body weight (CC=408.6±11.3g; CW=474.1±9.2g; WW=475.8±16.3g, p<0.001), increased abdominal fat (CC=12.6±0.8g; CW=34.1± 2.3g; WW=33.2± 2.4g, p<0.001), reduced food intake (CC=26.3±0.8g; CW=17.0±0.6; WW=18.4±0.9g, p<0.001), and similar energetic intake were found among the groups fed on the western-style diet regardless to the exposure time. Also, the area under the curves of glucose tolerance test, glucose, triacylglycerol, VLDL-c and total cholesterol blood levels were higher in the western-style diet groups compared to the control groups (p<0.01). However, levels of hormones were different according to specific windows of dietary exposure. The CW group showed higher corticosterone (CC=263.4± 109.1;CW= 339.9±16.6; WW=305.5±16.2ng/mL, p<0.001) and leptin levels (CC=8.2 0.7;CW=14.5 1.4;WW=9.1 0.7ng/mL p<0.001); and the WW group showed raised insulin levels (CC=6.7±0.3;CW=8.0±0.3;WW=10.5±0.8ng/mL, p<0.001). Then, the western-style diet enhanced signals of metabolic imbalance in both groups, but the outcomes varied according to the windows of dietary exposure.


Western-style diet; glucose tolerance, hyperinsulinemia, hyperleptinemia, abdominal fat, rats.

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DOI: https://doi.org/10.34117/bjdv6n7-470


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