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在动物模型中,嵌入银纳米颗粒可减轻二乙基亚硝胺(DEN)诱导的肝细胞癌发生,降低氧化应激和促炎标志物水平。

Amelioration of diethylnitrosamine (DEN)-induced hepatocellular carcinogenesis in animal models knockdown oxidative stress and proinflammatory markers by embedded silver nanoparticles.

作者信息

Singh Deepika, Singh Manvendra, Yadav Ekta, Falls Neha, Komal Ujendra, Dangi Deependra Singh, Kumar Vikas, Verma Amita

机构信息

Department of Pharmaceutical Science, Faculty of Health Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences Allahabad 211007 India.

HMFA Institute of Engineering & Technology Handia Allahabad 211007 India.

出版信息

RSC Adv. 2018 Feb 12;8(13):6940-6953. doi: 10.1039/c7ra12775h. eCollection 2018 Feb 9.

Abstract

In hepatocellular carcinoma (HCC), primary liver cancer is primarily responsible for inflammation-related cancer as more than 90% of HCCs emerge with regard to hepatic damage and inflammation. Tenacious inflammation is known to advance and intensify liver tumours. Nanomaterials, for example, silver nanoparticles synthesized from plant-derived materials have shown great outcomes in reducing the pre-cancerous nodules and have anticancer properties. The aim of the present investigation was to biosynthesize, characterize and evaluate the anticancer activity of nanoparticles-embedded extract (MLAgNPs) on an experimental model of hepatic cancer in rats. contains a high amount of flavonoids and other phenolic derivative. The silver nanoparticles synthesized by were characterized by various instruments, including UV-Vis spectrophotometry, X-ray beam diffraction, field-emission scanning electron microscopy with energy dispersive X-ray analysis, transmission electron microscopy and Fourier transform infrared spectroscopy. Liver cancer was induced to 36 Wistar rats by a single dose of diethylnitrosamine (DEN) (200 mg kg BW). Hepatic cancer by MLAgNPs dose-dependently limited macroscopical variation compared with the DEN-induced hepatic cancer groups. The serum and liver were taken to measure the antioxidant parameters, proinflammatory cytokines and for a histopathological study. Serum hepatic and serum non-hepatic along with inflammatory cytokines were also assessed. Reduction in the levels of proinflammatory cytokines, namely tumour necrosis factor-α, interleukin-6, interleukin-1β, nuclear factor kappa beta (NF-κB), and improved membrane-bound enzyme activity were also detected. It was found that minor morphological anomalies were identified in the histopathology analysis in the MLAgNPs-treated groups. It could be concluded that silver nanoparticles introduce an extraordinary potential for use as adjuvants in hepatic cancer treatment because of their antioxidant abilities and ability to diminish inflammation in liver tissue by attenuating the NF-κB pathway.

摘要

在肝细胞癌(HCC)中,原发性肝癌主要是炎症相关癌症,因为超过90%的肝细胞癌是在肝脏损伤和炎症的基础上发生的。已知持续性炎症会促进和加剧肝肿瘤。例如,由植物源材料合成的银纳米颗粒等纳米材料在减少癌前结节方面显示出良好效果,并具有抗癌特性。本研究的目的是生物合成、表征并评估包埋纳米颗粒的提取物(MLAgNPs)对大鼠肝癌实验模型的抗癌活性。该提取物含有大量黄酮类化合物和其他酚类衍生物。通过多种仪器对合成的银纳米颗粒进行了表征,包括紫外可见分光光度法、X射线束衍射、带能谱X射线分析的场发射扫描电子显微镜、透射电子显微镜和傅里叶变换红外光谱。通过单次给予二乙基亚硝胺(DEN)(200 mg/kg体重)诱导36只Wistar大鼠患肝癌。与DEN诱导的肝癌组相比,MLAgNPs剂量依赖性地限制了宏观变化。采集血清和肝脏样本以测量抗氧化参数、促炎细胞因子,并进行组织病理学研究。还评估了血清肝脏和血清非肝脏指标以及炎症细胞因子。还检测到促炎细胞因子水平降低,即肿瘤坏死因子-α、白细胞介素-6、白细胞介素-1β、核因子κB(NF-κB),并且膜结合酶活性得到改善。发现在MLAgNPs治疗组的组织病理学分析中识别出轻微的形态异常。可以得出结论,银纳米颗粒因其抗氧化能力以及通过减弱NF-κB途径减少肝组织炎症的能力,在肝癌治疗中作为佐剂具有巨大潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16c9/9078335/5d51763c349a/c7ra12775h-f1.jpg

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