Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Republic of Korea.
Food Standard Research Center, Korea Food Research Institute, Jeollabuk-do 55365, Republic of Korea.
Biomed Res Int. 2020 Sep 12;2020:7929610. doi: 10.1155/2020/7929610. eCollection 2020.
This study investigated if intestinal (CD) causes liver injury. Four-week-old male C3H/HeN mice were treated with phosphate-buffered solution (control), CD, diethylnitrosamine (DEN) to induce liver injury with PBS (DEN+PBS), and DEN with CD (DEN+CD) for nine weeks. After sacrifice, livers and mesenteric lymph nodes (MLNs) were removed and bacterial translocation, transcriptomes, and proteins were analysed. CD was found in 20% of MLNs from the control and DEN+PBS groups, in 30% of MLNs from the CD group, and in 75% of MLNs from the DEN+CD groups, which had injured livers. Also, CD was detected in 50% of the livers in the DEN+CD group with CD-positive MLNs. Elevated , , , , , , , and expressions were observed in the CD and DEN+CD groups as compared to the control and DEN+PBS groups. Protein levels of IL-6 and HMGB1 were higher in the CD and DEN+CD groups than in the control and DEN+PBS groups. These results indicate that intestinal CD can initiate and aggravate liver injury, and the mechanism of pathogenesis for liver injury should be investigated in further studies.
本研究旨在探讨肠道(CD)是否会导致肝脏损伤。将 4 周龄雄性 C3H/HeN 小鼠用磷酸盐缓冲液(对照)、CD、二乙基亚硝胺(DEN)处理 9 周,以诱导肝脏损伤并用 PBS(DEN+PBS)和 DEN 加 CD(DEN+CD)处理。处死小鼠后,取出肝脏和肠系膜淋巴结(MLN),分析细菌易位、转录组和蛋白质。在对照和 DEN+PBS 组的 20%的 MLN 中发现 CD,在 CD 组的 30%的 MLN 中发现 CD,在 DEN+CD 组的 75%的 MLN 中发现 CD,且 DEN+CD 组的肝脏受损。此外,在 DEN+CD 组的 CD 阳性 MLN 中检测到 50%的肝脏存在 CD。与对照和 DEN+PBS 组相比,CD 和 DEN+CD 组中、、、、、、和的表达水平升高。CD 和 DEN+CD 组的 IL-6 和 HMGB1 蛋白水平高于对照和 DEN+PBS 组。这些结果表明,肠道 CD 可引发和加重肝脏损伤,应在进一步的研究中探讨其发病机制。