Effect of Ginkgo biloba on liver injury of arsenic poisoning rats caused by corn flour baked by high-arsenic coal
10.3760/cma.j.issn.2095-4255.2017.05.005
- VernacularTitle:银杏叶片对高砷煤烘玉米粉致大鼠肝损害的干预作用
- Author:
Maolin YAO
;
Aihua ZHANG
;
Chun YU
;
Yuyan XU
;
Yong HU
- Keywords:
Arsenic poisoning;
Ginkgo biloba;
Rats;
Liver injury;
Oxidative damage
- From:
Chinese Journal of Endemiology
2017;36(5):333-337
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effects and the possible mechanism of Gingko biloba on liver injury due to arsenic poisoning in rats,and to provide experimental evidence for prevention and treatment of arsenic poisoning.Methods The corn powder baked by high arsenic coal was served as the main raw material to make feed containing arsenic.Forty healthy Wistar rats were randomly divided into 5 groups according to their body weights,including control group A,arsenic poisoning group,control group B,natural recovery group and Ginkgo biloba treatment group,eight rats in each group,half male and half female.The control group A rats were fed with normal diet ad libitum for 3.0 months;the arsenic poisoning group rats were freely given feed containing arsenic (100 mg/kg) for 3.0 months;the control group B rats were fed with normal diet ad libitum for 4.5 months;the natural recovery group rats were freely given arsenic (100 mg/kg) feed for 3.0 months,and then given a normal diet for 1.5 months;Ginkgo biloba treatment rats ingested arsenic feed for 3.0 months,and then give Ginkgo biloba solution (25 mg/kg) orally,6 d/week for 1.5 months,then back to normal diet.The content of arsenic in urine,liver,as well as the liver function indices [alanine aminotransferase (ALT),aspartate transaminase (AST),total bile acids (TBA),gamma glutamyl aminopeptidase (GGT),glutathione S-transferase (GSTs)] and the oxidative stress indexes [superoxide dismutase (SOD),glutathione peroxidase (GPx),thiol (-SH),malondialdehyde （MDA)] of liver homogenate,were measured.Results The arsenic content of urine and liver (geometric mean) of the rats in arsenic poisoning group (2 991.24 μg/g Cr,4.29 μg/g) were significantly higher than those in control group A (91.59 μg/g Cr,1.00 μg/g).Urinary arsenic and liver arsenic levels of rats in natural recovery and Ginkgo biloba treatment groups (467.39,334.48 μg/g Cr;,3.15,1.88 μg/g) were higher than those in control group B (99.54 μg/g Cr,0.85 μg/g).The arsenic contents of urine of the rats in natural recovery group,the arsenic contents of urine and liver of rats of Ginkgo biloba treatment group were all lower than those in arsenic poisoning group.The differences were significant (all P ＜ 0.05).The activity/contents of AST,TBA,GGT,GSTs of rats in arsenic poisoning group [(212.88 ± 29.76) U/L,(19.19 ± 4.33) μmol/L,(1.73 ± 0.50) U/L,(196.21 ± 47.38) U/L] were all significantly higher than those in control group A [(142.63 ± 24.20) U/L,(6.23 ± 2.95) μmol/L,(0.77 ± 0.32) U/L,(142.86 ± 28.58) U/L].The activity/contents of TBA,GGT,GSTs in natural recovery group were (17.07 ± 3.92) μ,mol/L,(1.47 ± 0.57) U/L and (178.06 ± 27.37) U/L;and the contents of TBA in Ginkgo biloba treatment group were (13.60 ± 3.00) μmol/L;which were all higher than those in control group B [(7.55 ± 2.45) μmol/L,(0.74 ± 0.51) U/L,(145.17 ± 28.59) U/L].The activity of AST in natural recovery group [(137.44 ± 23.20) U/L],the activity/contents of AST,TBA,GGT and GSTs in Ginkgo biloba treatment group[(129.63 ± 31.25) U/L,(13.60 ± 3.00) μmol/L,(1.15 ± 0.48) U/L,(155.64 ± 20.79) U/L,respectively] were all lower than those in arsenic poisoning group.The content of TBA in Ginkgo biloba treatment group was lower than that of natural recovery group.The differences of those indexes were all significant (all P ＜ 0.05).The activity/contents of SOD,GPx and-SH in arsenic poisoning group [(46.34 ± 11.39),(275.16 ± 92.00) U/mg prot and (0.08 ± 0.02) μmol/mg prot] were all significantly lower than those in control group A [(75.52 ± 8.72),(1 351.01 ± 395.96) U/mg prot,(0.13 ± 0.01) μmol/mg prot].The activity of SOD and GPx in natural recovery group [(42.44 ± 9.58),(694.87 ± 187.01) U/mg prot] were all lower than those in control group B [(68.17 ± 11.11),(1 342.80 ± 185.04) U/mg prot].The activity of GPx in natural recovery group,the activity/contents of SOD,GPx,-SH in Ginkgo biloba treatment group [(63.90 ± 10.44),(1 283.28 ± 373.87) U/mg prot,(0.12-± 0.02) μmol/mg prot] were all higher than those in arsenic poisoning group.The contents of SOD,GPx,-SH in Ginkgo biloba treatment group were higher than those of natural recovery group.The content of MDA in arsenic poisoning group [(3.05 ± 0.94) nmol/mg prot] was higher than that in control group A [(1.67 ± 0.55) nmol/mg prot].The content of MDA of rats in natural recovery and Ginkgo biloba treatment groups were (2.22 ± 0.93),(1.77 ± 0.37) nmol/mg prot,which were lower than those in the arsenic poisoning group.The differences of the above indexes were all significant (all P ＜ 0.05).Conclusion Ginkgo biloba can reduce the accumulation of arsenic in the liver and ameliorate lipid peroxidation,relieve liver injury effectively in rats caused by coal-burning arsenic.
