Abstract
Titanium dioxide (TiO2) are among most frequently used nanoparticles (NPs). They are present in a variety of consumer products, including food industry in which they are employed as an additive. The potential toxic effects of these NPs on mammal cells have been extensively studied. However, studies regarding neurotoxicity and specific effects on neuronal systems are very scarce and, to our knowledge, no studies on human neuronal cells have been reported so far. Therefore, the main objective of this work was to investigate the effects of two types of TiO2 NPs, with different crystalline structure, on human SHSY5Y neuronal cells. After NPs characterization, a battery of assays was performed to evaluate the viability, cytotoxicity, genotoxicity and oxidative damage in TiO2 NP-exposed SHSY5Y cells. Results obtained showed that the behaviour of both types of NPs resulted quite comparable. They did not reduce the viability of neuronal cells but were effectively internalized by the cells and induced dose-dependent cell cycle alterations, apoptosis by intrinsic pathway, and genotoxicity not related with double strand break production. Furthermore, all these effects were not associated with oxidative damage production and, consequently, further investigations on the specific mechanisms underlying the effects observed in this study are required.
| Original language | English |
|---|---|
| Pages (from-to) | 352-361 |
| Number of pages | 10 |
| Journal | Food and Chemical Toxicology |
| Volume | 57 |
| DOIs | |
| Publication status | Published - Jul 2013 |
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Keywords
- Cytotoxicity
- Genotoxicity
- Nanoparticles
- SHSY5Y cells
- Titanium dioxide
ASJC Scopus subject areas
- Food Science
- Toxicology
Cite this
Comparative study on effects of two different types of titanium dioxide nanoparticles on human neuronal cells. / Valdiglesias, Vanessa; Costa, Carla; Sharma, Vyom; Kiliç, Gözde; Pásaro, Eduardo; Teixeira, João Paulo; Dhawan, Alok; Laffon, Blanca.
In: Food and Chemical Toxicology, Vol. 57, 07.2013, p. 352-361.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Comparative study on effects of two different types of titanium dioxide nanoparticles on human neuronal cells
AU - Valdiglesias, Vanessa
AU - Costa, Carla
AU - Sharma, Vyom
AU - Kiliç, Gözde
AU - Pásaro, Eduardo
AU - Teixeira, João Paulo
AU - Dhawan, Alok
AU - Laffon, Blanca
PY - 2013/7
Y1 - 2013/7
N2 - Titanium dioxide (TiO2) are among most frequently used nanoparticles (NPs). They are present in a variety of consumer products, including food industry in which they are employed as an additive. The potential toxic effects of these NPs on mammal cells have been extensively studied. However, studies regarding neurotoxicity and specific effects on neuronal systems are very scarce and, to our knowledge, no studies on human neuronal cells have been reported so far. Therefore, the main objective of this work was to investigate the effects of two types of TiO2 NPs, with different crystalline structure, on human SHSY5Y neuronal cells. After NPs characterization, a battery of assays was performed to evaluate the viability, cytotoxicity, genotoxicity and oxidative damage in TiO2 NP-exposed SHSY5Y cells. Results obtained showed that the behaviour of both types of NPs resulted quite comparable. They did not reduce the viability of neuronal cells but were effectively internalized by the cells and induced dose-dependent cell cycle alterations, apoptosis by intrinsic pathway, and genotoxicity not related with double strand break production. Furthermore, all these effects were not associated with oxidative damage production and, consequently, further investigations on the specific mechanisms underlying the effects observed in this study are required.
AB - Titanium dioxide (TiO2) are among most frequently used nanoparticles (NPs). They are present in a variety of consumer products, including food industry in which they are employed as an additive. The potential toxic effects of these NPs on mammal cells have been extensively studied. However, studies regarding neurotoxicity and specific effects on neuronal systems are very scarce and, to our knowledge, no studies on human neuronal cells have been reported so far. Therefore, the main objective of this work was to investigate the effects of two types of TiO2 NPs, with different crystalline structure, on human SHSY5Y neuronal cells. After NPs characterization, a battery of assays was performed to evaluate the viability, cytotoxicity, genotoxicity and oxidative damage in TiO2 NP-exposed SHSY5Y cells. Results obtained showed that the behaviour of both types of NPs resulted quite comparable. They did not reduce the viability of neuronal cells but were effectively internalized by the cells and induced dose-dependent cell cycle alterations, apoptosis by intrinsic pathway, and genotoxicity not related with double strand break production. Furthermore, all these effects were not associated with oxidative damage production and, consequently, further investigations on the specific mechanisms underlying the effects observed in this study are required.
KW - Cytotoxicity
KW - Genotoxicity
KW - Nanoparticles
KW - SHSY5Y cells
KW - Titanium dioxide
UR - http://www.scopus.com/inward/record.url?scp=84877322512&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84877322512&partnerID=8YFLogxK
U2 - 10.1016/j.fct.2013.04.010
DO - 10.1016/j.fct.2013.04.010
M3 - Article
C2 - 23597443
AN - SCOPUS:84877322512
VL - 57
SP - 352
EP - 361
JO - Food and Chemical Toxicology
JF - Food and Chemical Toxicology
SN - 0278-6915
ER -