Naqvi Syeda Itrat Zahra, Kausar Humera, Afzal Arooj, Hashim Mariam, Mujahid Huma, Javed Maryam, Hano Christophe, Anjum Sumaira
Department of Biotechnology, Kinnaird College for Women, 92-Jail Road, Lahore 54000, Pakistan.
Institute of Biochemistry and Biotechnology, University of Veterinary & Animal Sciences, Lahore 54000, Pakistan.
J Funct Biomater. 2023 Apr 14;14(4):221. doi: 10.3390/jfb14040221.
Aflatoxins produced by some species of are considered secondary toxic fungal by-products in feeds and food. Over the past few decades, many experts have focused on preventing the production of aflatoxins by and also reducing its toxicity. Applications of various nanomaterials in preventing the production of these toxic aflatoxins have received a lot of attention recently. The purpose of this study was to ascertain the protective impact of -mediated silver nanoparticles (AgNPs) against -induced toxicity by exhibiting strong antifungal activity in in vitro (wheat seeds) and in vivo (Albino rats) settings. For the synthesis of AgNPs, the leaf extract of enriched with high phenolic (72.68 ± 2.13 mg GAE/g DW) and flavonoid (18.89 ± 0.31 mg QE/g DW) contents was used. Synthesized AgNPs were characterized by various techniques, including TEM, EDX, FT-IR, and XRD, which revealed that the particles were spherical in shape with no agglomeration and fine particle size in the range of 16-20 nm. In vitro antifungal activity of AgNPs was tested on wheat grains by inhibiting the production of toxic aflatoxins by . According to the results obtained from High-Performance Liquid Chromatography (HPLC) and Thin-Layer Chromatography (TLC) analyses, there was a correlation between the concentration of AgNPs and a decrease in the production of aflatoxin G1, B1, and G2. For in vivo antifungal activity, Albino rats were administrated with different doses of AgNPs in five groups. The results indicated that the feed concentration of 50 µg/kg feed of AgNPs was more effective in improving the disturbed levels of different functional parameters of the liver (alanine transaminase (ALT): 54.0 ± 3.79 U/L and aspartate transaminase (AST): 206 ± 8.69 U/L) and kidney (creatinine 0.49 ± 0.020 U/L and BUN 35.7 ± 1.45 U/L), as well as the lipid profile (LDL 22.3 ± 1.45 U/L and HDL 26.3 ± 2.33 U/L). Furthermore, the histopathological analysis of various organs also revealed that the production of aflatoxins was successfully inhibited by AgNPs. It was concluded that the harmful effects of aflatoxins produced by can be successfully neutralized by using -mediated AgNPs.
某些曲霉菌种产生的黄曲霉毒素被认为是饲料和食品中的次生有毒真菌副产物。在过去几十年里,许多专家致力于防止曲霉菌产生黄曲霉毒素,并降低其毒性。各种纳米材料在防止这些有毒黄曲霉毒素产生方面的应用最近受到了广泛关注。本研究的目的是通过在体外(小麦种子)和体内(白化大鼠)环境中展现出强大的抗真菌活性,确定曲霉菌介导的银纳米颗粒(AgNPs)对曲霉菌诱导的毒性的保护作用。为了合成AgNPs,使用了富含高酚类(72.68±2.13毫克没食子酸当量/克干重)和黄酮类(18.89±0.31毫克槲皮素当量/克干重)含量的曲霉菌叶提取物。合成的AgNPs通过多种技术进行表征,包括透射电子显微镜(TEM)、能量散射X射线光谱(EDX)、傅里叶变换红外光谱(FT-IR)和X射线衍射(XRD),结果表明颗粒呈球形,无团聚现象,粒径在16 - 20纳米范围内。通过抑制曲霉菌产生有毒黄曲霉毒素,在小麦籽粒上测试了AgNPs的体外抗真菌活性。根据高效液相色谱(HPLC)和薄层色谱(TLC)分析获得的结果,AgNPs浓度与黄曲霉毒素G1、B1和G2产量的降低之间存在相关性。对于体内抗真菌活性,将白化大鼠分为五组,给予不同剂量的AgNPs。结果表明,饲料中AgNPs浓度为50微克/千克饲料时,在改善肝脏(丙氨酸转氨酶(ALT):54.0±3.79 U/L和天冬氨酸转氨酶(AST):206±8.69 U/L)和肾脏(肌酐0.49±0.020 U/L和尿素氮35.7±1.45 U/L)不同功能参数的紊乱水平以及脂质谱(低密度脂蛋白22.3±1.45 U/L和高密度脂蛋白26.3±2.33 U/L)方面更有效。此外,对各种器官的组织病理学分析还表明,AgNPs成功抑制了黄曲霉毒素的产生。得出的结论是,使用曲霉菌介导的AgNPs可以成功中和曲霉菌产生的黄曲霉毒素的有害影响。