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Intestinal flora imbalance results in altered bacterial translocation and liver function in rats with experimental cirrhosis

Background/purpose The intestinal microflora plays a major role in human health. Intestinal flora imbalances are seen in clinical settings, such as cirrhosis, in which bacterial translocation (BT) results in migration of bacteria or bacterial products from the intestinal lumen to extraintestinal sites. In this study, we explored the effect of alterations in gut flora on BT and liver function in cirrhotic rats. Methods In this study, we used a carbon tetrachloride-induced cirrhotic rat model to compare the abundance of major aerobic and anaerobic bacterial species in healthy and cirrhotic rats. We used antibiotic (norfloxacin) and different probiotic treatments to change the status of gut flora in the cirrhotic rats and evaluated BT, liver function, and endotoxemia in the different models. Results We found higher levels of Enterobacteriaceae in cirrhotic rats when compared with healthy rats. Bifidobacteria treatment resulted in lower levels of Enterobacteriaceae along with increased levels of Lactobacillus when compared with the normal saline group. Both Bifidobacteria and Enterococcus treatments resulted in lower endotoxin levels than in the normal saline group. Conclusion Gut flora imbalances in cirrhotic rats result in significant changes in BT and liver function in cirrhotic rats.