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Revista Brasileira de Ciências do Esporte

versão impressa ISSN 0101-3289versão On-line ISSN 2179-3255

Resumo

SOUZA, Romeu Rodrigues de et al. Glutamine supplementation influences the secretory apparatus in the right atrial cardiomyocytes of resistance trained aged rats. Rev. Bras. Ciênc. Esporte [online]. 2019, vol.41, n.3, pp.331-337.  Epub 16-Set-2019. ISSN 0101-3289.  https://doi.org/10.1016/j.rbce.2018.08.005.

We investigated the effects of glutamine supplementation on the secretory apparatus of natriuretic peptides in atrial cardiomyocytes of aged rats undergoing resistance training. Two groups of resistance-trained rats were studied: resistance trained, and resistance trained and supplemented with glutamine group. Both groups of rats were trained to climb a 1.1 m vertical ladder with weights tied to their tail. The cardiomyocytes from resistance trained and supplemented rats showed increased density and sectional area of natriuretic peptides granules, higher relative volumes of the mitochondria, endoplasmic reticulum, Golgi complex and nuclear euchromatin, and nuclear pore density compared with resistance trained rats. In conclusion, glutamine supplementation caused hypertrophy of the secretory apparatus in the cardiomyocytes of aged rats undergoing resistance training.

Palavras-chave : Atrial muscle cells; Amino acid supplementation; Anaerobic training; Natriuretic peptide.

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