Department of Physiology, College of Medicine and Health Sciences, PO Box # 17666, United Arab Emirates University, Al Ain 17666, UAE.
Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, PO Box # 17666, United Arab Emirates University, Al Ain 17666, UAE.
Int J Mol Sci. 2018 Nov 28;19(12):3776. doi: 10.3390/ijms19123776.
Acetaminophen (APAP), which is also known as paracetamol or -acetyl--aminophenol is a safe and potent drug for fever, pain and inflammation when used at its normal therapeutic doses. It is available as over-the-counter drug and used by all the age groups. The overdose results in acute liver failure that often requires liver transplantation. Current clinical therapy for APAP-induced liver toxicity is the administration of -acetyl-cysteine (NAC), a sulphydryl compound an approved drug which acts by replenishing cellular glutathione (GSH) stores in the liver. Over the past five decades, several studies indicate that the safety and efficacy of herbal extracts or plant derived compounds that are used either as monotherapy or as an adjunct therapy along with conventional medicines for hepatotoxicity have shown favorable responses. Phytochemicals mitigate necrotic cell death and protect against APAP-induced liver toxicityby restoring cellular antioxidant defense system, limiting oxidative stress and subsequently protecting mitochondrial dysfunction and inflammation. Recent experimental evidences indicat that these phytochemicals also regulate differential gene expression to modulate various cellular pathways that are implicated in cellular protection. Therefore, in this review, we highlight the role of the phytochemicals, which are shown to be efficacious in clinically relevant APAP-induced hepatotoxicity experimental models. In this review, we have made comprehensive attempt to delineate the molecular mechanism and the cellular targets that are modulated by the phytochemicals to mediate the cytoprotective effect against APAP-induced hepatotoxicity. In this review, we have also defined the challenges and scope of phytochemicals to be developed as drugs to target APAP-induced hepatotoxicity.
对乙酰氨基酚(APAP),又称扑热息痛或 N-乙酰-对氨基苯酚,在正常治疗剂量下,是一种安全有效的解热、镇痛和抗炎药物。它是一种非处方药,适用于所有年龄段。过量使用会导致急性肝衰竭,通常需要进行肝移植。目前,APAP 诱导的肝毒性的临床治疗方法是给予 -乙酰半胱氨酸(NAC),这是一种含巯基的化合物,是一种已批准的药物,通过补充肝脏细胞内谷胱甘肽(GSH)的储存而起作用。在过去的五十年中,有几项研究表明,草药提取物或植物衍生化合物作为单一疗法或与常规药物联合用于肝毒性的安全性和有效性已经显示出良好的反应。植物化学物质通过恢复细胞抗氧化防御系统、限制氧化应激,从而减轻坏死性细胞死亡并预防 APAP 诱导的肝毒性,保护线粒体功能障碍和炎症。最近的实验证据表明,这些植物化学物质还调节差异基因表达,以调节与细胞保护相关的各种细胞途径。因此,在本综述中,我们强调了植物化学物质的作用,这些物质在临床相关的 APAP 诱导的肝毒性实验模型中被证明是有效的。在本综述中,我们全面尝试描绘了植物化学物质调节的分子机制和细胞靶点,以介导对 APAP 诱导的肝毒性的细胞保护作用。在本综述中,我们还定义了将植物化学物质开发为药物以针对 APAP 诱导的肝毒性的挑战和范围。
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