Expressions of intestinal alpha-defensin-5, beta-defensin-2 in acute liver failure
10.3760/cma.j.issn.2095-428X.2019.07.008
- VernacularTitle:肠道α-防御素-5、β-防御素-2在急性肝衰竭时的表达
- Author:
Lijuan TENG
1
;
Shuangjie LI
;
Wenxian OUYANG
Author Information
1. 南华大学儿科学院
- Keywords:
Alpha-defensin-5;
Beta-defensin-2;
Antimicrobial peptides;
Lipopolysaccharide;
D-galactosamine;
Acute liver failure
- From:
Chinese Journal of Applied Clinical Pediatrics
2019;34(7):510-512
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the dynamic changes in intestinal alpha-defensin-5 (RD-5),beta-defensin-2 (BD-2) mRNA after acute liver failure(ALF),and to explore their role in ALF.Methods A total of 60 C57BL5 mice were divided into 4 groups by means of random number table method:normal control group,ALF group,E.coli via gavage group and ALF + E.coli via gavage group.Intraperitoneal injection of D-galactosamine (500 mg/kg) and lipopolysaccharide(10 μg/kg) to make the model,in addition,ALF mice were fed with E.coli,and the observation time was 6 hours,12 hours,and 24 hours after modeling,and each time point had 6 specimens.Real-time PCR was used to test the RD-5 mRNA and BD-2 mRNA levels in the ileum tissue.Results The levels of RD-5 and BD-2 showed dynamic change in the experiment of ALF.Compared with the levels of RD-5 and BD-2(11.25 ±0.74,23.86 ±0.39) of the normal control group,the levels of RD-5 and BD-2 in ALF group and E.coli via gavage group increased at 6 hours after modeling(14.19 ±0.39,26.79 ± 0.36 and 12.57 ± 0.68,26.45 ± 0.85),and the differences were significant(all P＜0.05);at 12 hours after modeling,the RD-5 and BD-2 reached to the maximum concentration(15.76 ±0.33,29.10 ± 0.61 and 12.90 ± 0.96,27.42 ± 0.71),and the differences were statistically signi-ficant (all P ＜ 0.05).The degree of elevation of BD-2 was higher than RD-5.Later,they gradually declined.Conclusions RD-5 and BD-2 may play an important role in the pathogenesis of intestinal endotoxemia in experimental ALF.
