The mechanism of cell-damaging reactive oxygen generation by colloidal fullerenes

Autophagy-mediated chemosensitization in cancer cells by fullerene C60 nanocrystal

“…Nano-C60 is known to produce ROS upon photoactivation. [38][39][40] Consistent with this, Nano-C60 prepared by us generated ROS in water, as detected by Electron Spin Resonance (ESR) (Fig. 6A).…”

Effect of platinum nanoparticles on morphological parameters of spring wheat seedlings in a substrate-plant system

“…Besides, flavonoids (vegetable polyphenols) have antioxidant properties and can neutralize free radicals produced by oxidative stress. NPs of some metals can induce active forms of oxygen, which cause significant damage to cell structures [17]. On the other hand, increasing content of flavonoids does not only indicate unfavorable processes going on but also the activation of mechanisms preventing destructive changes.…”

Assessment of the effect of nanomaterials on sediment-dwelling invertebrate Chironomus tentans larvae

“…The four different NMs concentrations were selected on the basis of a recent report by Markovic et al (2007) which indicated that concentrations of most common nanoparticles (NPs) could be expected to be present in natural waters in the range 1 to 10 µg/l and total NP concentrations may approach 100 µg/l, while values in sediment may be much higher. Hence, Klaine et al (2008) suggested that sediments, and therefore benthic, organisms are expected to be the main sinks and receptors of NPs in surface waters, since metals, for example, tend to sorb to small colloids that aggregate and settle out from the water column to the sediments (Sigg et al, 1994).…”