Jump to main content
Jump to site search

Issue 7, 2017
Previous Article Next Article

Protective effects of fraction 4a of polysaccharides isolated from Lycium barbarum against KBrO3-induced renal damage in rats

Author affiliations

Abstract

Potassium bromate (KBrO3) is widely used as a food additive and is a major by-product of water disinfection. The aim of this study was to investigate the protective effects of fraction 4a of polysaccharides isolated from Lycium barbarum (LBP-4a) against renal damage induced by KBrO3 in rats and to determine the relevant mechanisms behind these effects. Male Wistar rats were divided into a normal control group, a KBrO3 control group, and LBP-4a(L) and LBP-4a(H) groups. With the exception of the normal control group, the rats in the other three groups were administered KBrO3 by intraperitoneal injection to induce renal damage. Before the induction of renal damage, rats in the LBP-4a(L) and LBP-4a(H) groups were pretreated with 50 mg per kg b.w. or 100 mg per kg b.w. LBP-4a, respectively, by intragastric administration. Clinical biochemical parameters and markers of oxidative damage were also determined. Treatment by administration of LBP-4a prior to challenge with KBrO3 prevented increases in the levels of nitrite, creatinine, urea nitrogen and uric acid in serum and increased the activities of antioxidant enzymes in kidney tissues. A comet assay and FCS results showed that pretreatment with LBP-4a also alleviated DNA damage and decreases in mitochondrial membrane potentials in renal cells. Histological studies further supported the above results and showed extensive renal damage in animals treated with KBrO3 and greatly reduced tissue injury in groups pretreated with LBP-4a. In conclusion, LBP-4a exhibited protective effects against renal damage induced by KBrO3, and the mechanism was closely correlated with a reduction in levels of lipid peroxidation and an increase in the activities of antioxidant enzymes in kidney tissues, which alleviated DNA damage and increased mitochondrial membrane potentials in renal cells. These observations provide the background for the further development of LBP-4a as a protective agent for use in the treatment of renal damage.

Graphical abstract: Protective effects of fraction 4a of polysaccharides isolated from Lycium barbarum against KBrO3-induced renal damage in rats

Back to tab navigation

Publication details

The article was received on 19 Dec 2016, accepted on 14 Jun 2017 and first published on 14 Jun 2017


Article type: Paper
DOI: 10.1039/C6FO01818A
Citation: Food Funct., 2017,8, 2566-2572
  •   Request permissions

    Protective effects of fraction 4a of polysaccharides isolated from Lycium barbarum against KBrO3-induced renal damage in rats

    J. Li, M. Shi, B. Ma, Y. Zheng, R. Niu and K. Li, Food Funct., 2017, 8, 2566
    DOI: 10.1039/C6FO01818A

Search articles by author

Spotlight

Advertisements