Impact of magnetite iron oxide nanoparticles on wheat ( Triticum aestivum L.) development: Evaluation of oxidative damage

2016 ◽  
Vol 131 ◽  
pp. 77-88 ◽  
Author(s):  
María Florencia Iannone ◽  
María Daniela Groppa ◽  
María Elisa de Sousa ◽  
Marcela Beatriz Fernández van Raap ◽  
María Patricia Benavides
2018 ◽  
Vol 38 (1) ◽  
pp. 122-131 ◽  
Author(s):  
Naveen Sundaria ◽  
Manoj Singh ◽  
Prateek Upreti ◽  
Ravendra P. Chauhan ◽  
J. P. Jaiswal ◽  
...  

Author(s):  
Natalia Fernández-Bertólez ◽  
Carla Costa ◽  
Maria João Bessa ◽  
Margriet Park ◽  
Marie Carriere ◽  
...  

2019 ◽  
Vol 173 ◽  
pp. 156-164 ◽  
Author(s):  
Afzal Hussain ◽  
Shafaqat Ali ◽  
Muhammad Rizwan ◽  
Muhammad Zia ur Rehman ◽  
Muhammad Farooq Qayyum ◽  
...  

2018 ◽  
Vol 5 (1) ◽  
pp. 103-114 ◽  
Author(s):  
Seung Mook Lee ◽  
Pavan M. V. Raja ◽  
Gibran L. Esquenazi ◽  
Andrew R. Barron

The increase in global production of nanomaterials has raised concern as to their possible effects on plants that could ultimately affect the human population.


2016 ◽  
Vol 68 (1) ◽  
pp. 41-50 ◽  
Author(s):  
Erdal Sonmez ◽  
Elanur Aydin ◽  
Hasan Turkez ◽  
Elvan Özbek ◽  
Basak Togar ◽  
...  

With the development of nanotechnology and the wide use of iron oxide nanoparticles, it has become necessary to assess the potential adverse biological effects of magnetite. This study investigated the cytotoxicity, genotoxicity and oxidative damage of different concentrations of magnetite (0 to 1000 mg/L) in human whole blood cultures. After supplementation of magnetite, the blood samples were incubated for 72 h. Cell viability was assessed by the 3-(4,5-dimethyl-thiazol-2-yl) 2,5-diphenyltetrazolium bromide (MTT) and lactate dehydrogenase (LDH) release assays. The total antioxidant capacity (TAC) and total oxidant status (TOS) were determined to evaluate the dose-dependent effects of magnetite on the oxidant/antioxidant balance and to evaluate the potential oxidative injury due to increased oxidative stress. Genotoxicity was estimated by by the sister chromatid exchange (SCE), micronuclei (MN) and chromosome aberration (CA) assays and determination of 8-oxo-2-deoxyguanosine (8-OH-dG) levels. The results of MTT and LDH assays showed that the higher concentrations of magnetite (100, 150, 300, 500 and 1000 mg/L) decreased cell viability. Concentrations of magnetite higher than 10 mg/L increased TOS levels and decreased TAC levels in human blood cells. Increasing concentrations of magnetite caused significant increases in MN, SCE and CA rates and 8-OH-dG levels. The obtained results showed that magnetite exerted dose-dependent effects on oxidative damage, genotoxicity and cytotoxicity in human blood cells.


2018 ◽  
Vol 6 (10) ◽  
Author(s):  
Hosam Zaghloul ◽  
Doaa A. Shahin ◽  
Ibrahim El- Dosoky ◽  
Mahmoud E. El-awady ◽  
Fardous F. El-Senduny ◽  
...  

Antisense oligonucleotides (ASO) represent an attractive trend as specific targeting molecules but sustain poor cellular uptake meanwhile superparamagnetic iron oxide nanoparticles (SPIONs) offer stability of ASO and improved cellular uptake. In the present work we aimed to functionalize SPIONs with ASO targeting the mRNA of Cyclin B1 which represents a potential cancer target and to explore its anticancer activity. For that purpose, four different SPIONs-ASO conjugates, S-M (1–4), were designated depending on the sequence of ASO and constructed by crosslinking carboxylated SPIONs to amino labeled ASO. The impact of S-M (1–4) on the level of Cyclin B1, cell cycle, ROS and viability of the cells were assessed by flowcytometry. The results showed that S-M3 and S-M4 reduced the level of Cyclin B1 by 35 and 36%, respectively. As a consequence to downregulation of Cyclin B1, MCF7 cells were shown to be arrested at G2/M phase (60.7%). S-M (1–4) led to the induction of ROS formation in comparison to the untreated control cells. Furthermore, S-M (1–4) resulted in an increase in dead cells compared to the untreated cells and SPIONs-treated cells. In conclusion, targeting Cyclin B1 with ASO-coated SPIONs may represent a specific biocompatible anticancer strategy.


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