To investigate the effects of blackcurrant on lipid metabolism and intestinal flora in High-Fat Diet mice.

A total of 150 C57BL/6J mice aged 7-8 weeks were selected, with half male and half female. Twelve mice were randomly selected and fed a normal diet as a blank control group. The other mice were fed a high-fat diet for 8 weeks, and the mice with successful obesity modeling were selected and randomly grouped according to gender. The 60 mice were divided into four groups, including high-fat（normal saline）, low-dose（1 250 mg/（kg·d））, medium-dose（2 500 mg/（kg·d））, and high-dose（5 000 mg/（kg·d））, with six mice in each group. The subjects were given continuous gavage for 10 weeks. To evaluate the effect of the intervention and explore the possible mechanism of the intervention. The results were described by (). Differences between groups were tested by ANOVA (α=0.05).

There were significant differences in liver weight, liver coefficient and kidney weight between ND female group and HFD female group and each subject group (P<0.05). The subcutaneous fat mass, perirenal fat mass, perirenal fat mass, and mesenteric fat mass in the ND male group were significantly different from those in the HFD male group and the LOW male group (P<0.05). The subcutaneous fat mass, perirenal fat mass and uterine fat mass of ND female mice were significantly different from those of HFD female group and LOW female group (P<0.05). There were significant differences in TC, TG, HDL-C and LDL-C between the ND male group and the HFD male group and the HIGH male group (P<0.05), and there were significant differences in TG and LDL-C between the ND female group and the HFD female group, the LOW female group and the HIGH female group (P<0.05). There was a significant difference in ALT among the groups (P<0.05). The cells of the liver tissue and adipose tissue in the ND group were intact, and the cells in the HFD group had large fat vacuoles, and the cells in each test group tended to return to normal levels. There was a significant difference in β-diversity among the four groups (P<0.01). The changes in the abundance of Firmicutes, Bacteroidota, and Verrucomicrobiota were also observed (P<0.05).

Blackcurrant can reduce body fat and visceral fat, regulating blood lipid metabolism, protect liver function and regulate intestinal flora.