Limits...
Organization of research team for nano-associated safety assessment in effort to study nanotoxicology of zinc oxide and silica nanoparticles.

Kim YR, Park SH, Lee JK, Jeong J, Kim JH, Meang EH, Yoon TH, Lim ST, Oh JM, An SS, Kim MK - Int J Nanomedicine (2014)

Bottom Line: Currently, products made with nanomaterials are used widely, especially in biology, bio-technologies, and medical areas.Different sizes of zinc oxide and silica NPs were purchased and coated with citrate, L-serine, and L-arginine in order to modify surface charges (eight different NPs), and each of the NPs were characterized by various techniques, for example, zeta potentials, scanning electron microscopy, and transmission electron microscopy.Several limitations were encountered in the RT-NASA project, and they are discussed for consideration for improvements in future studies.

View Article: PubMed Central - PubMed

Affiliation: Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, South Korea.

ABSTRACT
Currently, products made with nanomaterials are used widely, especially in biology, bio-technologies, and medical areas. However, limited investigations on potential toxicities of nanomaterials are available. Hence, diverse and systemic toxicological data with new methods for nanomaterials are needed. In order to investigate the nanotoxicology of nanoparticles (NPs), the Research Team for Nano-Associated Safety Assessment (RT-NASA) was organized in three parts and launched. Each part focused on different contents of research directions: investigators in part I were responsible for the efficient management and international cooperation on nano-safety studies; investigators in part II performed the toxicity evaluations on target organs such as assessment of genotoxicity, immunotoxicity, or skin penetration; and investigators in part III evaluated the toxicokinetics of NPs with newly developed techniques for toxicokinetic analyses and methods for estimating nanotoxicity. The RT-NASA study was carried out in six steps: need assessment, physicochemical property, toxicity evaluation, toxicokinetics, peer review, and risk communication. During the need assessment step, consumer responses were analyzed based on sex, age, education level, and household income. Different sizes of zinc oxide and silica NPs were purchased and coated with citrate, L-serine, and L-arginine in order to modify surface charges (eight different NPs), and each of the NPs were characterized by various techniques, for example, zeta potentials, scanning electron microscopy, and transmission electron microscopy. Evaluation of the "no observed adverse effect level" and systemic toxicities of all NPs were performed by thorough evaluation steps and the toxicokinetics step, which included in vivo studies with zinc oxide and silica NPs. A peer review committee was organized to evaluate and verify the reliability of toxicity tests, and the risk communication step was also needed to convey the current findings to academia, industry, and consumers. Several limitations were encountered in the RT-NASA project, and they are discussed for consideration for improvements in future studies.

No MeSH data available.


Related in: MedlinePlus

The entire system and research direction for the establishment of reliable nanotoxicity data.Abbreviation: PWG, pathology working group.
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f3-ijn-9-003: The entire system and research direction for the establishment of reliable nanotoxicity data.Abbreviation: PWG, pathology working group.

Mentions: Figure 3 illustrates the research directions and progression of the entire system. First, the peer review committee, classified by professional fields, was recommended and invited to review the reports from various toxicity tests to ensure the reliability of the three tests, which include the 90-day repeated administration toxicity test, genetic toxicity test, and reproduction toxicity test. These lengthy investigations were performed at the Korea Testing and Research Institute (Seoul, Korea) with approval of and in accordance with the principles of Good Laboratory Practice.


Organization of research team for nano-associated safety assessment in effort to study nanotoxicology of zinc oxide and silica nanoparticles.

Kim YR, Park SH, Lee JK, Jeong J, Kim JH, Meang EH, Yoon TH, Lim ST, Oh JM, An SS, Kim MK - Int J Nanomedicine (2014)

The entire system and research direction for the establishment of reliable nanotoxicity data.Abbreviation: PWG, pathology working group.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4279765&req=5

f3-ijn-9-003: The entire system and research direction for the establishment of reliable nanotoxicity data.Abbreviation: PWG, pathology working group.
Mentions: Figure 3 illustrates the research directions and progression of the entire system. First, the peer review committee, classified by professional fields, was recommended and invited to review the reports from various toxicity tests to ensure the reliability of the three tests, which include the 90-day repeated administration toxicity test, genetic toxicity test, and reproduction toxicity test. These lengthy investigations were performed at the Korea Testing and Research Institute (Seoul, Korea) with approval of and in accordance with the principles of Good Laboratory Practice.

Bottom Line: Currently, products made with nanomaterials are used widely, especially in biology, bio-technologies, and medical areas.Different sizes of zinc oxide and silica NPs were purchased and coated with citrate, L-serine, and L-arginine in order to modify surface charges (eight different NPs), and each of the NPs were characterized by various techniques, for example, zeta potentials, scanning electron microscopy, and transmission electron microscopy.Several limitations were encountered in the RT-NASA project, and they are discussed for consideration for improvements in future studies.

View Article: PubMed Central - PubMed

Affiliation: Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, South Korea.

ABSTRACT
Currently, products made with nanomaterials are used widely, especially in biology, bio-technologies, and medical areas. However, limited investigations on potential toxicities of nanomaterials are available. Hence, diverse and systemic toxicological data with new methods for nanomaterials are needed. In order to investigate the nanotoxicology of nanoparticles (NPs), the Research Team for Nano-Associated Safety Assessment (RT-NASA) was organized in three parts and launched. Each part focused on different contents of research directions: investigators in part I were responsible for the efficient management and international cooperation on nano-safety studies; investigators in part II performed the toxicity evaluations on target organs such as assessment of genotoxicity, immunotoxicity, or skin penetration; and investigators in part III evaluated the toxicokinetics of NPs with newly developed techniques for toxicokinetic analyses and methods for estimating nanotoxicity. The RT-NASA study was carried out in six steps: need assessment, physicochemical property, toxicity evaluation, toxicokinetics, peer review, and risk communication. During the need assessment step, consumer responses were analyzed based on sex, age, education level, and household income. Different sizes of zinc oxide and silica NPs were purchased and coated with citrate, L-serine, and L-arginine in order to modify surface charges (eight different NPs), and each of the NPs were characterized by various techniques, for example, zeta potentials, scanning electron microscopy, and transmission electron microscopy. Evaluation of the "no observed adverse effect level" and systemic toxicities of all NPs were performed by thorough evaluation steps and the toxicokinetics step, which included in vivo studies with zinc oxide and silica NPs. A peer review committee was organized to evaluate and verify the reliability of toxicity tests, and the risk communication step was also needed to convey the current findings to academia, industry, and consumers. Several limitations were encountered in the RT-NASA project, and they are discussed for consideration for improvements in future studies.

No MeSH data available.


Related in: MedlinePlus