Division of Hepatology and Pancreatology, Department of Internal Medicine, Aichi Medical University, Nagakute, Aichi, 480-1195, Japan.
J Gastroenterol. 2018 Mar;53(3):362-376. doi: 10.1007/s00535-017-1415-1. Epub 2017 Dec 16.
Nonalcoholic fatty liver disease (NAFLD) is the most prevalent liver disease worldwide, and there is no approved pharmacotherapy. The efficacy of vitamin E and pioglitazone has been established in nonalcoholic steatohepatitis (NASH), a progressive form of NAFLD. GLP-1RA and SGLT2 inhibitors, which are currently approved for use in diabetes, have shown early efficacy in NASH, and also have beneficial cardiovascular or renal effects. Innovative NASH therapies include four main pathways. The first approach is targeting hepatic fat accumulation. Medications in this approach include modulation of peroxisome proliferator-activator receptors (e.g., pemafibrate, elafibranor), medications targeting farnesoid X receptor axis [obeticholic acid; OCA)], inhibitors of de novo lipogenesis (aramchol, ACC inhibitor), and fibroblast growth factor-21 analogues. A second target is oxidative stress, inflammation, and apoptosis. This class of drug includes apoptosis signaling kinase 1 (ASK1) inhibitor and emricasan (an irreversible caspase inhibitor). A third target is intestinal microbiomes and metabolic endotoxemia. Several agents are in ongoing trials, including IMMe124, TLR4 antagonist, and solithromycin (macrolide antibiotics). The final target is hepatic fibrosis, which is strongly associated with all-cause or liver-related mortality in NASH. Antifibrotic agents are a cysteine-cysteine motif chemokine receptor-2/5 antagonist (cenicriviroc; CVC) and galectin 3 antagonist. Among a variety of medications in development, four agents such as OCA, elafibranor, ASK1 inhibitor, and CVC are currently being evaluated in an international phase 3 trial for the treatment of NASH. Within the next few years, the availability of therapeutic options for NASH will hopefully curb the rising trend of NASH-related diseases.
非酒精性脂肪性肝病(NAFLD)是全球最常见的肝脏疾病,目前尚无批准的药物治疗方法。维生素 E 和吡格列酮已被证实可用于治疗非酒精性脂肪性肝炎(NASH),这是一种进展性的 NAFLD 形式。GLP-1RA 和 SGLT2 抑制剂目前已被批准用于治疗糖尿病,它们在 NASH 中的早期疗效已得到证实,同时还具有有益的心血管或肾脏作用。创新的 NASH 治疗方法包括四条主要途径。第一种方法是针对肝脂肪堆积。该方法中的药物包括过氧化物酶体增殖物激活受体调节剂(如 pemafibrate、elafibranor)、法尼醇 X 受体轴药物[奥贝胆酸(OCA)]、从头合成脂肪生成抑制剂(aramchol、ACC 抑制剂)和成纤维细胞生长因子-21 类似物。第二种方法是针对氧化应激、炎症和细胞凋亡。这一类药物包括凋亡信号激酶 1(ASK1)抑制剂和 emricasan(一种不可逆的半胱天冬酶抑制剂)。第三种方法是针对肠道微生物组和代谢性内毒素血症。几种药物正在进行临床试验,包括 IMMe124、TLR4 拮抗剂和 solithromycin(大环内酯类抗生素)。最后一种方法是针对肝纤维化,肝纤维化与 NASH 的全因或肝脏相关死亡率密切相关。抗纤维化药物是半胱氨酸-半胱氨酸基趋化因子受体 2/5 拮抗剂(cenicriviroc;CVC)和半乳糖凝集素 3 拮抗剂。在开发中的各种药物中,OCA、elafibranor、ASK1 抑制剂和 CVC 这四种药物目前正在一项国际 3 期临床试验中评估用于治疗 NASH。在未来几年内,NASH 的治疗选择有望遏制 NASH 相关疾病的上升趋势。