alexa Regulation on energy metabolism and protection on mitochondria of Panax ginseng polysaccharide.
Gastroenterology

Gastroenterology

Journal of Liver

Author(s): Li XT, Chen R, Jin LM, Chen HY, Li XT, Chen R, Jin LM, Chen HY

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Abstract Panax ginseng C A Meyer (PG) is one of the most popular qi-invigorating herbal medicine and has been used to promote health, vitality, and longevity in China. Although PG has been used in traditional Chinese medicine for millennia, its qi-invigorating activities still lack convincing evidence. We investigated the effects of Panax ginseng polysaccharide (PGP) on energy metabolism and mitochondrial protection. The chronic hypoxia model was set up. Lipid peroxidation product malondialdehyde (MDA) was assayed by thiobarbituric acid (TBA) colorimetry. Mice liver mitochondria were isolated by differential centrifugation. The spectrophotometric method was used to measure the swelling of mitochondria. The levels of adenosine triphosphate (ATP), adenosine diphosphate (ADP) and adenosine monophosphate (AMP) in liver cells were determined by reversed-phase high performance liquid chromatography (RP-HPLC), adenylate energy charge (AEC), total adenylate pool (TAP), ATP/ADP and ATP/AMP ratio were calculated. The creatine kinase (CK) activities in mice skeletal muscle were determined by a commercial monitoring kit. The result showed that PGP could inhibit mitochondrial injury and swelling induced by Fe(2+)-L-Cys in a concentration-dependent manner. PGP which was administered by oral gavage daily for 10 days could inhibit the formation of MDA in mice brain, increase levels of ATP, ADP, TAP and AEC, ratio of ATP/ADP and ATP/AMP in liver cells, increase CK activities in mice skeletal muscle under chronic hypoxia condition. These results indicate that PGP protect mitochondria by inhibiting mitochondrial swelling, and improving energy metabolism. PGP functions as a preventive antioxidant by increasing CK activities. Therefore, PGP had the pharmaceutical activities of antihypoxia, antioxidation and improving energy status. This article was published in Am J Chin Med and referenced in Journal of Liver

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