School of Nursing, Jinan University, No. 601 Huangpu Avenue West, Guangzhou, Guangdong, 510632, China.
School of Traditional Chinese Medicine, Jinan University, No. 601 Huangpu Avenue West, Guangzhou, Guangdong, 510632, China.
Probiotics Antimicrob Proteins. 2019 Mar;11(1):175-185. doi: 10.1007/s12602-017-9378-3.
The aim of this study was to investigate how the effects of compound probiotics modulate the gut microbiota, short-chain fatty acid (SCFA), body composition, serum and liver lipids, and inflammatory markers in non-alcoholic fatty liver disease (NAFLD) rats. Twenty-four male SD rats were randomly divided into 3 groups: normal control group (standard feed), high-fat diet (HFD) feeding group (83% standard feed + 10% lard oil + 1.5% cholesterol + 0.5% cholate + 5% sucrose), and compound probiotics intervention group (HFD + 0.6 g × kg × d compound probiotics). The microbial population was assessed by 16S rDNA amplification and sequence analysis. Body composition, serum and liver lipids, serum inflammatory markers, colonic SCFAs, and relative proteins were assessed. The results showed that compound probiotics significantly reduced body weight, visceral and total fat mass, and the levels of hepatic TC and TG and serum TG, FFA, ALT, LPS, IL-1β, and IL-18 (P < 0.05). The proportions of TM7 phylum (0.06 vs 1.57%, P < 0.05) clearly increased, while that of Verrucomicrobia phylum (5.69 vs 2.61%, P < 0.05) clearly decreased. Compound probiotics also increased the representation of Ruminococcus genus (0.95 vs 1.83%, P < 0.05), while the proportion of Veillonella genus decreased (0.10 vs 0.03%, P < 0.05). The levels of colonic SCFAs and GPR43, NLRP3, ASC, and CASPASE-1 proteins also changed significantly (P < 0.05). Compound probiotics modulated gut microbiota, SCFAs, and their receptor GPR43 in NAFLD rats. These changes might inhibit lipid deposition and chronic metabolic inflammation in response to the insult of HFD.
本研究旨在探讨复合益生菌对非酒精性脂肪性肝病(NAFLD)大鼠肠道微生物群、短链脂肪酸(SCFA)、体成分、血清和肝脏脂质以及炎症标志物的影响。将 24 只雄性 SD 大鼠随机分为 3 组:正常对照组(标准饲料)、高脂饮食(HFD)喂养组(83%标准饲料+10%猪油+1.5%胆固醇+0.5%胆酸钠+5%蔗糖)和复合益生菌干预组(HFD+0.6 g×kg×d 复合益生菌)。通过 16S rDNA 扩增和序列分析评估微生物群。评估体成分、血清和肝脏脂质、血清炎症标志物、结肠 SCFAs 和相对蛋白。结果显示,复合益生菌显著降低了大鼠体重、内脏和总脂肪量以及肝 TC 和 TG 及血清 TG、FFA、ALT、LPS、IL-1β和 IL-18 的水平(P<0.05)。TM7 门的比例(0.06 对 1.57%,P<0.05)明显增加,而 Verrucomicrobia 门的比例(5.69 对 2.61%,P<0.05)明显降低。复合益生菌还增加了 Ruminococcus 属的代表(0.95 对 1.83%,P<0.05),而 Veillonella 属的比例下降(0.10 对 0.03%,P<0.05)。结肠 SCFA 和 GPR43、NLRP3、ASC 和 CASPASE-1 蛋白的水平也发生了显著变化(P<0.05)。复合益生菌调节了 NAFLD 大鼠的肠道微生物群、SCFAs 及其受体 GPR43。这些变化可能抑制了 HFD 刺激下的脂质沉积和慢性代谢性炎症。