1. Polysaccharides from Hemp Seed Protect against Cyclophosphamide-Induced Intestinal Oxidative Damage via Nrf2-Keap1 Signaling Pathway in Mice
- Author
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Zhou Yufang, Wan-Zheng Ai, Zhong-Shan Zhang, Zheng-Shun Wen, Xing-Wei Xiang, Ming Du, Ran Xue, and Tian-Yi Zhou
- Subjects
0301 basic medicine ,Male ,Aging ,02 engineering and technology ,Biochemistry ,chemistry.chemical_compound ,Malondialdehyde ,Spectroscopy, Fourier Transform Infrared ,chemistry.chemical_classification ,Mice, Inbred ICR ,Kelch-Like ECH-Associated Protein 1 ,biology ,medicine.diagnostic_test ,Chemistry ,Glutathione peroxidase ,Monosaccharides ,General Medicine ,021001 nanoscience & nanotechnology ,Catalase ,medicine.anatomical_structure ,Jejunum ,Organ Specificity ,Inactivation, Metabolic ,Seeds ,0210 nano-technology ,Research Article ,Signal Transduction ,Article Subject ,NF-E2-Related Factor 2 ,Spleen ,Ileum ,Protective Agents ,Superoxide dismutase ,03 medical and health sciences ,Western blot ,Polysaccharides ,medicine ,Animals ,Cyclophosphamide ,Cannabis ,Glutathione Peroxidase ,QH573-671 ,Superoxide Dismutase ,Body Weight ,Cell Biology ,KEAP1 ,Molecular biology ,Oxidative Stress ,030104 developmental biology ,biology.protein ,Cytology - Abstract
Hemp seed has been used as a traditional oriental medicine and health food in China for centuries. Polysaccharides from hemp seed (HSP) exhibit important properties of intestinal protection, but there are limited data on the specific underlying mechanism. The primary objective of this study was to investigate the protective effect of HSP on intestinal oxidative damage induced by cyclophosphamide (Cy) in mice. The results showed that pretreatment with HSP significantly increased the average daily gain, thymus index, spleen index, superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) activity in serum and ileal homogenate and significantly reduced malondialdehyde (MDA) content in ileal homogenate. In addition, the expression levels of SOD, GSH-Px, Nrf2, heme oxidase-1 (HO-1), and quinoneoxidoreductase-1 (NQO1) mRNA in ileal homogenate were significantly increased. Western blot results showed that HSP significantly upregulated the expression of Nrf2 protein and downregulated the expression of Keap1 protein in the ileum. Collectively, our findings indicated that HSP had protective effects on intestinal oxidative damage induced by Cy in mice, and its mechanism might be related to the activation of Nrf2-Keap1 signaling pathway.
- Published
- 2020