title: Juglone prevents metabolic endotoxemia-induced hepatitis and neuroinflammation via suppressing TLR4/NF-κB signaling pathway in high-fat diet rats.
abstract: Juglone as a natural production mainly extracted from green walnut husks of Juglans mandshurica has been defined as the functional composition among a series of compounds. It showed powerful protective effect in various diseases by inhibiting inflammation and tumor cells growth. However, studies on its anti-inflammatory effect based on high-fat diet-induced hepatitis and neuroinflammation are still not available. In this regard, we first investigated whether juglone suppresses high-fat diet-stimulated liver injury, hypothalamus inflammation and underlying mechanisms by which they may recover them. SD rats were orally treated with or without high-fat diet, 0.25 mg/kg or 1 mg/kg juglone for 70 days. Subsequently, blood, hypothalamus and liver tissue were collected for different analysis. Also, the primary astrocytes were isolated and used to analyze the inhibitory effect of juglone in vitro. Analysis of inflammatory cytokines declared that the inhibition of TNF-α, IL-1β and IL-6 could be carried by juglone in response to high-fat diet rats. Meanwhile, TLR4 expression and NF-kappa activity also have been confirmed to be the key link in the development of hepatitis and nerve inflammation. The activation was significantly suppressed in treatment group as compared with model. These results indicated that juglone prevents high-fat diet-induced liver injury and nerve inflammation in mice through inhibition of inflammatory cytokine secretion, NF-kappa B activation and endotoxin production.
authors.affiliation: College of Aerospace Science and Engineering, National Univ. of Defense Technology, Changsha, Hunan 430000, China. Electronic address: pxh8410@163.com.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Peng
authors.affiliation: College of Aerospace Science and Engineering, National Univ. of Defense Technology, Changsha, Hunan 430000, China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Nie
authors.affiliation: College of Aerospace Science and Engineering, National Univ. of Defense Technology, Changsha, Hunan 430000, China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Wu
authors.affiliation: College of Aerospace Science and Engineering, National Univ. of Defense Technology, Changsha, Hunan 430000, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Huang
authors.affiliation: College of Aerospace Science and Engineering, National Univ. of Defense Technology, Changsha, Hunan 430000, China.
authors.forename: Yuqiang
authors.initials: Y
authors.lastname: Cheng
mesh_terms: D000818:Animals; D000893:Anti-Inflammatory Agents / Q000494:pharmacology; D001253:Astrocytes / Q000187:drug effects / Q000378:metabolism; D016207:Cytokines / Q000096:biosynthesis / Q000235:genetics; D059305:Diet, High-Fat / Q000009:adverse effects; D019446:Endotoxemia / Q000150:complications* / Q000378:metabolism; D006520:Hepatitis, Animal / Q000378:metabolism / Q000473:pathology / Q000517:prevention & control*; D007031:Hypothalamus / Q000187:drug effects / Q000378:metabolism / Q000473:pathology; D007249:Inflammation / Q000378:metabolism / Q000517:prevention & control*; D008070:Lipopolysaccharides / Q000633:toxicity; D008297:Male; D051379:Mice; D016328:NF-kappa B / Q000378:metabolism*; D009285:Naphthoquinones / Q000494:pharmacology*; D009422:Nervous System Diseases / Q000378:metabolism / Q000517:prevention & control; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D051381:Rats; D017207:Rats, Sprague-Dawley; D015398:Signal Transduction / Q000187:drug effects; D051197:Toll-Like Receptor 4 / Q000378:metabolism*
chemical_list: D000893:Anti-Inflammatory Agents; D016207:Cytokines; D008070:Lipopolysaccharides; D016328:NF-kappa B; D009285:Naphthoquinones; D012333:RNA, Messenger; C495347:Tlr4 protein, rat; D051197:Toll-Like Receptor 4; C005134:juglone
keywords: Hepatitis; Hypothalamus inflammation; Juglone; NF-kappa B; Toll-like receptor 4