Toxicity of Titanium Dioxide Nanoparticles to Tadpoles of Asian Common Toad (Duttaphrynus melanostictus) Following Short Term and Chronic Exposures

2021 ◽  
Author(s):  
K. M. Sudesh Ruvinda ◽  
Asoka Pathiratne
Keyword(s):  
Titanium Dioxide ◽  
Titanium Dioxide Nanoparticles ◽  
Common Toad ◽  
Short Term ◽  
Duttaphrynus Melanostictus

Effect of Short-Term Exposure to Titanium Dioxide Nanoparticles on Intestinal Absorption of Glucose by Ex Vivo Everted Rat Gut Sac Model

2021 ◽  
Vol 21 (9) ◽  
pp. 4586-4595
Author(s):  
Yun Wang ◽  
Zhangjian Chen ◽  
Shi Chen ◽  
Lin Zhuo ◽  
Lin Zhao ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Small Intestine ◽  
Intestinal Absorption ◽  
Titanium Dioxide Nanoparticles ◽  
Food Additives ◽  
Daily Intake ◽  
Intestinal Lumen ◽  
Sugar Uptake ◽  
Short Term ◽  
Short Term Exposure

Titanium dioxide nanoparticles (TiO2 NPs) as food additives were widely found in various foodrelated products, especially in high-sugar foods. The daily intake of TiO2 NPs in the diet may therefore expose the small intestine to TiO2 NPs and affect its physiological functions, including the absorption of nutrients. It is speculated that TiO2 may cause serious health hazards by increasing sugar uptake. To explore this possibility, transport of glucose from small intestine was studied using an everted gut sac model prepared from small intestine of young healthy male SD rats. The translocation of TiO2 NPs and the morphological changes of small intestine were also observed after exposure of intestinal lumen to TiO2 NPs for 2 h. The results showed that TiO2 NPs can enter into enterocyte but hardly cross the intestinal epithelium. No change on microstructure of gut epithelia and expression of glucose transporter was found, and there is no obvious impact on intestinal absorption and metabolism of glucose. These results suggest that short-term exposure to TiO2 NPs has little influence on intestinal absorption of glucose. More attention should be paid to the chronic effect of dietary consumption of TiO2 NPs on nutrient absorption.

Oral, short-term exposure to titanium dioxide nanoparticles in Sprague-Dawley rat: focus on reproductive and endocrine systems and spleen

2013 ◽  
Vol 8 (6) ◽  
pp. 654-662 ◽  
Author(s):  
Roberta Tassinari ◽  
Francesco Cubadda ◽  
Gabriele Moracci ◽  
Federica Aureli ◽  
Marilena D’Amato ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Titanium Dioxide Nanoparticles ◽  
Sprague Dawley ◽  
Short Term ◽  
Sprague Dawley Rat ◽  
Short Term Exposure

Hemocyte responses of Dreissena polymorpha following a short-term in vivo exposure to titanium dioxide nanoparticles: Preliminary investigations

2012 ◽  
Vol 438 ◽  
pp. 490-497 ◽  
Author(s):  
Nicolas Couleau ◽  
Didier Techer ◽  
Christophe Pagnout ◽  
Stéphane Jomini ◽  
Laurent Foucaud ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Dreissena Polymorpha ◽  
Titanium Dioxide Nanoparticles ◽  
Short Term

Insight into the short-term effect of titanium dioxide nanoparticles on active ammonia oxidizing microorganisms in a full-scale wastewater treatment plant: a DNA-stable isotope probing study

RSC Advances ◽  
2016 ◽  
Vol 6 (77) ◽  
pp. 73421-73431 ◽  
Author(s):  
Jing-Feng Gao ◽  
Xiao-Yan Fan ◽  
Xin Luo ◽  
Kai-Ling Pan
Keyword(s):  
Titanium Dioxide ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Titanium Dioxide Nanoparticles ◽  
Treatment Plant ◽  
Stable Isotope Probing ◽  
Term Effect ◽  
Ammonia Oxidizing Bacteria ◽  
Short Term ◽  
Insight Into

Ammonia-oxidizing bacteria (AOB) and archaea (AOA) are two distinct ammonia-oxidizing microorganisms (AOMs) responsible for nitrification in wastewater treatment plants (WWTPs).

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