Effect of probiotics on non-alcoholic fatty liver disease / 国际药学研究杂志

Non-alcoholic fatty liver disease (NAFLD)is a common chronic liver disease. It covers a spectrum of liver diseases that range from hepatic steatosis to steatohepatitis and cirrhosis. The increase in its prevalence is linked to obesity and type 2 diabetes. More evidence shows a relation between overgrowth of gut microbiota with NAFLD and non-alcoholic steatohepatitis (NASH). Recently,many studies indicate that probiotics have very good effcts on improving NAFLD. Probiotics have been seen as a new way of treating NAFLD. But probiotics as treatment of NAFLD still need substantiation through more trials with a larger sample size and with longer-term clinical follow-up. Therefore,the research progress in probiotics treatment on animal experiments and clinical trials in NAFLD is reviewed in order to further understand the role of probiotics treatment,and provide the basis for the treatment of NAFLD.

Instability of anthocyanin composition under different subculture conditions during long-term suspension cultures of Vitis vinifera L. var. Gamay Fréaux / 生物工程学报

The instability of secondary metabolite production is a ubiquitous problem in plant cell culture. In order to understand the instability in plant cell culture, we investigated anthocyanin accumulation in suspension cultures of Vitis vinifera, as a model system, in our laboratory. Not only the anthocyanin contents but also its composition exhibited instability along with the long-term subculture. New methods were developed to indicate the instability of plant cell culture. Both the definition of instability coefficient (delta) and the application of factor scores were the first time in this field. To examine the effects of culture conditions on instability of anthocyanin biosynthesis, different subculture cycles and inoculum sizes had been investigated. Subculture cycle and inoculum size were both environmental cues driving the instability. Compared with subculture cycle, inoculum size was more effective in working on the instability of anthocyanin accumulation. Among all the conditions investigated in our study, (6.5 d, 2.00 g), (7 d, 2.00 g), (7.5 d, 2.00 g), (7 d, 1.60 g) and (7 d, 2.40 g), the condition of 7 d-subculture cycle together with 1.60 g-inoculum size was the best one to keep the stable production of anthocyanins.