mRNA expression levels of thioredoxin system in livers of different groups. (A) Liver Txnrd1 mRNA expression level; (B) Liver Txnrd3 mRNA expression level; (C) Liver Txn1 mRNA expression level; (D) Liver Txn2 mRNA expression level. Compared with normal group (p < 0.05) *, compared with Alco group (p < 0.05) #. Txnrd1: thioredoxin reductase 1; Txnrd3: thioredoxin reductase 3; Txn1: thioredoxin 1; Txn2: thioredoxin 2. Normal: normal saline-fed; Alco: alcohol-fed group; A12-L: alcohol-fed with live B. animalis A12 cells group, A12-D: alcohol-fed with dead B. animalis A12 cells group, A12-P: alcohol-fed with B. animalis A12 freeze-dried power group, M18-6-L: alcohol-fed with live L. salivarius M18-6 cells group, and M18-6-D: alcohol-fed with dead L. salivarius M18-6 cells group.