Metabolismo e integrazione della glutammina nello sport

  • Vinicius Fernandes Cruzat Mestre e doutorando pelo Departamento de Alimentos e Nutrição Experimental, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo
  • Mariana Lindenberg Alvarenga Mestranda pelo Departamento de Alimentos e Nutrição Experimental, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo
  • Julio Tirapegui Professor, Doutor associado do Departamento de Alimentos e Nutrição Experimental, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo
Parole chiave: Glutammina, Esercizi fisici, Supplementazione, Sistema immune, Sistema antiossidante

Abstract

La glutammina è un amminoacido considerato condizionatamente essenziale, perché, sebbene l'organismo possa sintetizzarlo, in condizioni di stress metabolico, che comprende esercizi fisici intensi e prolungati o estenuanti, può verificarsi un deficit della sua concentrazione. Donazione di azoto per la formazione degli acidi nucleici, equilibrio acido-base, amminogenesi, apporto di substrato energetico e aiuto nella sintesi di proteine ​​e antiossidanti intracellulari sono alcune delle funzioni e destinazioni in cui è coinvolta la glutammina. In questo senso, la riduzione della disponibilità di glutammina può influenzare una varietà di funzioni, tra cui la quantità di infortuni, il sistema immunitario, il sistema antiossidante e l'infiammazione indotta dall'esercizio fisico. L'integrazione di glutammina è un fatto noto nella nutrizione clinica. Tuttavia, come integratore alimentare per sportivi, suscita ancora grande interesse, poiché, per via orale, la glutammina in forma libera viene parzialmente metabolizzata dagli enterociti. Un'alternativa per superare la barriera intestinale è l'uso di dipeptidi di glutammina, come L-alanil-L-glutammina. La combinazione, tuttavia, di altri aminoacidi, come la L-alanina, anche in forma libera, può in qualche modo influenzare il metabolismo e gli effetti della supplementazione di glutammina. Nonostante ciò, le quantità e il frazionamento degli integratori che coinvolgono la glutammina ei possibili meccanismi coinvolti devono essere studiati meglio.

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Pubblicato
2012-01-13
Come citare
Cruzat, V. F., Alvarenga, M. L., & Tirapegui, J. (2012). Metabolismo e integrazione della glutammina nello sport. RBNE - Giornale Brasiliano Di Nutrizione Sportiva, 4(21). Recuperato da https://www.rbne.com.br/index.php/rbne/article/view/185
Sezione
Articoli Scientifici - Original