Leucine and glycine dipeptides of porcine placenta ameliorate physical fatigue through enhancing dopaminergic systems.

Molecular Medicine Reports
Na-Ra HanHyun-Ja Jeong

Abstract

Fatigue is a common and serious health problem, and various dietary interventions have previously been employed to ameliorate fatigue. The aim of the current study was to investigate the anti‑fatigue effects of Danish porcine placenta (DPP) and its major dipeptides, including leucine‑glycine (LG) and glycine‑leucine (GL). The anti‑fatigue effects of orally administered DPP, LG and GL were determined using a treadmill exercise test and a forced swimming test (FST) in mice. Additionally, the anti‑inflammatory effects of DPP, LG and GL were investigated in activated splenocytes. The results demonstrated that oral treatment of mice with DPP, LG and GL increased the time to exhaustion during treadmill exercise. Furthermore, DPP, LG and GL enhanced the levels of dopamine, brain‑derived neurotrophic factor and phosphorylated-extracellular signal‑regulated kinase in the brains of mice with treadmill exercise‑induced exhaustive fatigue, and decreased levels of certain proinflammatory cytokines in the serum and spleen, as determined by ELISA and western blot analysis. Following treadmill exercise, commercial kits were employed to demonstrate that DPP, LG and GL reduced the levels of lactate dehydrogenase, lactate, creatine kinase, blood ...Continue Reading

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Citations

Jun 15, 2021·Journal of Agricultural and Food Chemistry·Xuan MaHongbo Hu

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