Programming Skeletal Muscle Metabolic Flexibility in Offspring of Male Rats in Response to Maternal Consumption of Slow Digesting Carbohydrates during Pregnancy

被引:10
作者
Salto, Rafael [1 ]
Giron, Maria D. [1 ]
Manzano, Manuel [2 ]
Martin, Maria J. [2 ]
Vilchez, Jose D. [1 ]
Bueno-Vargas, Pilar [2 ]
Cabrera, Elena [1 ]
Perez-Alegre, Monica [3 ]
Andujar, Eloisa [3 ]
Rueda, Ricardo [2 ]
Lopez-Pedrosa, Jose M. [2 ]
机构
[1] Univ Granada, Sch Pharm, Dept Biochem & Mol Biol 2, Campus Cartuja, E-18071 Granada, Spain
[2] Abbott Labs, Abbott Nutr R&D, Granada 18004, Spain
[3] Univ Pablo de Olavide, Univ Sevilla, Ctr Andaluz Biol Mol & Med Regenerat, CABIMER,CSIC, Seville 41704, Spain
关键词
early programming; skeletal muscle; muscle differentiation; insulin-resistant pregnancy; metabolic flexibility; slow digesting carbohydrates; DIET; EXPRESSION; HEALTH; OBESE; ADIPOSITY; LACTATION; NUTRITION; OXIDATION; STATES; GLUT4;
D O I
10.3390/nu12020528
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 ;
摘要
Skeletal muscle plays a relevant role in metabolic flexibility and fuel usage and the associated muscle metabolic inflexibility due to high-fat diets contributing to obesity and type 2 diabetes. Previous research from our group indicates that a high-fat and rapid-digesting carbohydrate diet during pregnancy promotes an excessive adipogenesis and also increases the risk of non-alcoholic fatty liver disease in the offspring. This effect can be counteracted by diets containing carbohydrates with similar glycemic load but lower digestion rates. To address the role of the skeletal muscle in these experimental settings, pregnant rats were fed high-fat diets containing carbohydrates with similar glycemic load but different digestion rates, a high fat containing rapid-digesting carbohydrates diet (HF/RD diet) or a high fat containing slow-digesting carbohydrates diet (HF/SD diet). After weaning, male offspring were fed a standard diet for 3 weeks (weaning) or 10 weeks (adolescence) and the impact of the maternal HF/RD and HF/SD diets on the metabolism, signaling pathways and muscle transcriptome was analyzed. The HF/SD offspring displayed better muscle features compared with the HF/RD group, showing a higher muscle mass, myosin content and differentiation markers that translated into a greater grip strength. In the HF/SD group, metabolic changes such as a higher expression of fatty acids (FAT/CD36) and glucose (GLUT4) transporters, an enhanced glycogen content, as well as changes in regulatory enzymes such as muscle pyruvate kinase and pyruvate dehydrogenase kinase 4 were found, supporting an increased muscle metabolic flexibility and improved muscle performance. The analysis of signaling pathways was consistent with a better insulin sensitivity in the muscle of the HF/SD group. Furthermore, increased expression of genes involved in pathways leading to muscle differentiation, muscle mass regulation, extracellular matrix content and insulin sensitivity were detected in the HF/SD group when compared with HF/RD animals. In the HF/SD group, the upregulation of the ElaV1/HuR gene could be one of the main regulators in the positive effects of the diet in early programming on the offspring. The long-lasting programming effects of the HF/SD diet during pregnancy may depend on a coordinated gene regulation, modulation of signaling pathways and metabolic flexibility that lead to an improved muscle functionality. The dietary early programming associated to HF/SD diet has synergic and positive crosstalk effects in several tissues, mainly muscle, liver and adipose tissue, contributing to maintain the whole body homeostasis in the offspring.
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页数:21
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