Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Hema L. Puppala"'
Autor:
Qingbo Zhang, Yue Hu, Caitlin M. Masterson, Wonhee Jang, Zhen Xiao, Arash Bohloul, Daniel Garcia-Rojas, Hema L. Puppala, George Bennett, Vicki L. Colvin
Publikováno v:
iScience, Vol 25, Iss 7, Pp 104475- (2022)
Summary: Silver nanomaterials have potent antibacterial properties that are the foundation for their wide commercial use as well as for concerns about their unintended environmental impact. The nanoparticles themselves are relatively biologically ine
Externí odkaz:
https://doaj.org/article/3ee5ca1ebe2247158d5896e4aff31fab
Publikováno v:
Environmental Toxicology and Chemistry. 33:2716-2723
The increased bioavailability of nanoparticles engineered for good dispersion in water may have biological and environmental impacts. To examine this issue, the authors assessed the biological effects in nematodes as they relate to exposure to silver
Publikováno v:
Nano Letters. 12:4271-4275
For nearly a decade, researchers have debated the mechanisms by which AgNPs exert toxicity to bacteria and other organisms. The most elusive question has been whether the AgNPs exert direct "particle-specific" effects beyond the known antimicrobial a
Autor:
Hema L. Puppala, Arjun Prakash, Huiguang Zhu, Vicki L. Colvin, Elizabeth Q. Contreras, Seung Soo Lee
Publikováno v:
Chemistry of Materials. 24:424-432
Nanocrystalline ceria is an interesting inorganic material for biological application that can exhibit antioxidant properties due to facile electron transfer between cerium(III) and cerium(IV). In this work, ceria nanocrystals with uniform and tunabl
Publikováno v:
Environmental toxicology and chemistry. 33(12)
The increased bioavailability of nanoparticles engineered for good dispersion in water may have biological and environmental impacts. To examine this issue, the authors assessed the biological effects in nematodes as they relate to exposure to silver
Autor:
Phuc Nguyen, Laura Segatori, Minjung Cho, Seung Soo Lee, Vicki L. Colvin, Huiguang Zhu, Hema L. Puppala, Wensi Song
Publikováno v:
ACS nano. 7(11)
This work examines the effect of nanocrystal diameter and surface coating on the reactivity of cerium oxide nanocrystals with H2O2 both in chemical solutions and in cells. Monodisperse nanocrystals were formed in organic solvents from the decompositi
Publikováno v:
Environmental toxicology and chemistry. 32(10)
The most persistent question regarding the toxicity of silver nanoparticles (AgNPs) is whether this toxicity is due to the nanoparticles themselves or the silver ions (Ag(+)) they release. The present study investigates the role of surface coating an
Toxicity of quantum dots and cadmium salt to Caenorhabditis elegans after multigenerational exposure
Autor:
Elizabeth Q. Contreras, Huiguang Zhu, Weiwei Zhong, Vicki L. Colvin, Gabriela Escalera, Hema L. Puppala, Minjung Cho
Publikováno v:
Environmental sciencetechnology. 47(2)
To fully understand the biological and environmental impacts of nanomaterials requires studies that address both sublethal end points and multigenerational effects. Here, we use a nematode to examine these issues as they relate to exposure to two dif