In vivo antioxidant activity of polysaccharide fraction from Porphyra haitanesis (Rhodephyta) in aging mice.
Sulfated polysaccharide fraction F2 from Porphyra haitanesis (Rhodephyta) showed inhibitory effect on the in vitro lipid peroxidation. In the present study, the age-related changes in the antioxidant enzyme activity, lipid peroxidation, and total antioxidant capacity (TAOC) in different organs in mice were investigated and the in vivo antioxidant effect of F2 in aging mice was checked. Increased endogenous lipid peroxidation and decreased TAOC were observed in aging mice. Intraperitoneal administration of F2 significantly decreased the lipid peroxidation in a dose-dependent manner. F2 treatment increased TAOC and the activity of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in all the organs tested in aging mice. It is concluded that the sulfated polysaccharide fraction F2 can be used in compensating the decline in TAOC and the activities of antioxidant enzymes and thereby reduces the risks of lipid peroxidation.
Zhang
Quanbin
Q
Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China.
Li
Ning
N
Zhou
Gefei
G
Lu
Xiaolan
X
Xu
Zuhong
Z
Li
Zhien
Z
D000375:Aging / Q000187:drug effects* / Q000378:metabolism; D000704:Analysis of Variance; D000818:Animals; D000975:Antioxidants / Q000378:metabolism / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D005979:Glutathione Peroxidase / Q000378:metabolism; D015227:Lipid Peroxidation / Q000187:drug effects*; D008315:Malondialdehyde / Q000378:metabolism; D051379:Mice; D010936:Plant Extracts / Q000494:pharmacology*; D011134:Polysaccharides / Q000494:pharmacology*; D044664:Porphyra; D013482:Superoxide Dismutase / Q000378:metabolism
D000975:Antioxidants; D010936:Plant Extracts; D011134:Polysaccharides; D008315:Malondialdehyde; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase