School of Engineering and Physical Sciences, Heriot Watt University, Edinburgh, UK.
School of Medical Sciences, Bangor University, Bangor, UK.
J Toxicol Environ Health B Crit Rev. 2020 May 18;23(4):137-176. doi: 10.1080/10937404.2020.1751756. Epub 2020 Apr 23.
The liver is one of the most important multi-functional organs in the human body. Amongst various crucial functions, it is the main detoxification center and predominantly implicated in the clearance of xenobiotics potentially including particulates that reach this organ. It is now well established that a significant quantity of injected, ingested or inhaled nanomaterials (NMs) translocate from primary exposure sites and accumulate in liver. This review aimed to summarize and discuss the progress made in the field of hepatic nanotoxicology, and crucially highlight knowledge gaps that still exist.Key considerations include studies clearly demonstrate that low-solubility NMs predominantly accumulate in the liver macrophages the Kupffer cells (KC), rather than hepatocytes.KCs lining the liver sinusoids are the first cell type that comes in contact with NMs . Further, these macrophages govern overall inflammatory responses in a healthy liver. Therefore, interaction with of NM with KCs appears to be very important.Many acute studies demonstrated signs of toxicity induced by a variety of NMs. However, acute studies may not be that meaningful due to liver's unique and unparalleled ability to regenerate. In almost all investigations where a recovery period was included, the healthy liver was able to recover from NM challenge. This organ's ability to regenerate cannot be reproduced . However, recommendations and evidence is offered for the design of more physiologically relevant models.Models of hepatic disease enhance the NM-induced hepatotoxicity.The review offers a number of important suggestions for the future of hepatic nanotoxicology study design. This is of great significance as its findings are highly relevant due to the development of more advanced , and models aiming to improve physiologically relevant toxicological testing strategies and bridging the gap between and experimentation.
肝脏是人体最重要的多功能器官之一。在各种关键功能中,肝脏是主要的解毒中心,主要参与清除可能包括到达该器官的微粒的外来物质。现在已经证实,大量注射、摄入或吸入的纳米材料(NMs)从最初的暴露部位转移并在肝脏中积累。本综述旨在总结和讨论肝纳米毒理学领域的进展,并着重强调仍然存在的知识空白。关键考虑因素包括:研究清楚地表明,低溶解度的 NMs 主要积聚在肝脏巨噬细胞库弗细胞(KC)中,而不是肝细胞中。KC 排列在肝窦中,是与 NMs 首先接触的细胞类型。此外,这些巨噬细胞控制着健康肝脏的整体炎症反应。因此,NM 与 KC 的相互作用似乎非常重要。许多急性研究表明,各种 NMs 会引起毒性迹象。然而,由于肝脏具有独特且无与伦比的再生能力,急性研究可能并不那么有意义。在几乎所有包含恢复期的研究中,健康的肝脏都能够从 NM 挑战中恢复。这种器官的再生能力无法复制。然而,为更符合生理的 模型的设计提供了建议和证据。肝疾病模型增强了 NM 诱导的肝毒性。该综述为肝纳米毒理学研究设计的未来提供了一些重要建议。由于开发了更先进的、 旨在改进生理相关毒理学测试策略并缩小 和 实验之间差距的模型,因此这具有重要意义。
J Toxicol Environ Health B Crit Rev. 2020-4-23
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