RAW REHMANNIA RADIX POLYSACCHARIDE CAN EFFECTIVELY RELEASE PEROXIDATIVE INJURY INDUCED BY DUCK HEPATITIS A VIRUS|
Song, Meiyun; Chen, Yun; Du, Hongxu; Zhang, Shuaibing; Wang, Yixuan; Zeng, Ling; Yang, Jingjing; Shi, Jintong; Wu, Yi; Wang, Deyun; Hu, Yuanliang & Liu, Jiaguo
Background: Duck viral hepatitis (DVH), caused by duck hepatitis A virus (DHAV), is a fatal contagious infectious
disease which spreads rapidly with high morbidity and high mortality, and there is no effective clinical drug against
Materials and Methods: Raw Rehmannia Radix Polysaccharide (RRRP), Lycii Fructus polysaccharides and
Astragalus Radix polysaccharides were experimented in vitro and in vivo. Mortality rate, livers change, liver lesion
scoring, peroxidative injury evaluation indexes in vitro and in vivo, and hepatic injury evaluation indexes of optimal
one were detected and observed in this experiment.
Results: RRRP could reduce mortality with the protection rate about 20.0% compared with that of the viral control
(VC) group, finding that RRRP was the most effective against DHAV. The average liver scoring of the VC, blank
control (BC), RRRP groups were 3.5, 0, 2.1. Significant difference (P<0.05) appeared between any two groups,
demonstrating that it can alleviate liver pathological change. RRRP could make the hepatic injury evaluation indexes
similar to BC group while the levels of the VC group were higher than other two groups in general. The levels of SOD,
GSH-Px, CAT of RRRP group showed significant higher than that of VC group while the levels of NOS and MDA
showed the opposite tendency, thus, RRRP could release peroxidative injury.
Conclusion: RRRP was the most effective against duck hepatitis A virus (DHAV). RRRP could reduce mortality,
alleviate liver pathological change, down-regulate liver lesion score, release peroxidative injury and hepatic injury. The
antiviral and peroxidative injury releasing activity of RRRP for DHAV provided a platform to test novel drug strategies
for hepatitis A virus in human beings.
Raw Rehmannia Radix Polysaccharide; duck hepatitis A virus; peroxidative injury; hepatic injury