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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Functional effects of milk bioactive peptides on skeletal muscle of rats

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Author(s):
Moura, Carolina Soares [1] ; Barboza Lollo, Pablo Christiano [1] ; Morato, Priscila Neder [1] ; Risso, Eder Muller [1] ; Amaya-Farfan, Jaime [1]
Total Authors: 5
Affiliation:
[1] Univ Campinas UNICAMP, Dept Food & Nutr, Prot Resources Lab, Fac Food Engn, 80 Monteiro Lobato St, BR-13083862 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Food Research International; v. 84, p. 18-25, JUN 2016.
Web of Science Citations: 4
Abstract

Whey protein hydrolysate (WPH) intake has shown to enhance heat shock proteins (HSPs). The presence of bioactive peptides has been suggested to affect the capacity of WPH to induce a HSP response. HSPs are responsible for maintaining normal cellular function and protecting cells from the damage induced by various stressors, including exercise. Bioactive peptides have been considered as food components that could be biofunctionality, however, studies focusing on potential bioactive peptides from WPH are still limited. The purpose of this study was to determine which WPH peptides could modulate the HSP response and other WPH abilities. Fifty-six male Wistar rats were divided into seven groups (n = 8): control, vehicle, Isoleucyl-leucine (lle-Leu), Leucyl-isoleucine (Leu-lle), Valyl-leucine (Val-Leu), Leucyl-valine (Leu-Val) and WPH. Each animal received 3 mmol/kg dose of peptide or WPH dissolved in water by oral gavage. Except for the control group, all groups were subjected to acute exercise for homeostasis alteration. Treadmill exercise has been established as a stimulus for an HSP response. The Leu-Val peptide increased the HSP70 and HSP25 muscle expression and restored the dihydrofolate reductase (DHFR) expression. lle-Leu increased the muscle and serum HSP70 levels, but did not change the HSP25. Leu-Val increased and restored the expression of antioxidant system components. All peptides enhanced the lipase expression and reduced the cholesterol and triacylglycerol levels. These results indicated that the Leu-Val peptide is most likely involved in the WPH-induced stimulation of the HSP upregulation and antioxidant response, including the protective mechanism (DHFR) associated with the HSP70 effect Additionally, the lle-Leu could also contribute to the WPH effect. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 13/06494-5 - Metabolic impact of dietary whey proteins, peptides and amino acids thereof on the heat-shock proteins (HSPs) and associated parameters in rats
Grantee:Jaime Amaya Farfan
Support Opportunities: Regular Research Grants
FAPESP's process: 13/02862-0 - Effect of whey proteins intake, peptides and amino acids in the heat shock proteins (HSPs) and related parameters in rats
Grantee:Carolina Soares de Moura
Support Opportunities: Scholarships in Brazil - Doctorate