1
|
Drew NM, Kuempel ED, Pei Y, Yang F. A quantitative framework to group nanoscale and microscale particles by hazard potency to derive occupational exposure limits: Proof of concept evaluation. Regul Toxicol Pharmacol 2017; 89:253-267. [PMID: 28789940 PMCID: PMC5875420 DOI: 10.1016/j.yrtph.2017.08.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/18/2017] [Accepted: 08/03/2017] [Indexed: 11/28/2022]
Abstract
The large and rapidly growing number of engineered nanomaterials (ENMs) presents a challenge to assessing the potential occupational health risks. An initial database of 25 rodent studies including 1929 animals across various experimental designs and material types was constructed to identify materials that are similar with respect to their potency in eliciting neutrophilic pulmonary inflammation, a response relevant to workers. Doses were normalized across rodent species, strain, and sex as the estimated deposited particle mass dose per gram of lung. Doses associated with specific measures of pulmonary inflammation were estimated by modeling the continuous dose-response relationships using benchmark dose modeling. Hierarchical clustering was used to identify similar materials. The 18 nanoscale and microscale particles were classified into four potency groups, which varied by factors of approximately two to 100. Benchmark particles microscale TiO2 and crystalline silica were in the lowest and highest potency groups, respectively. Random forest methods were used to identify the important physicochemical predictors of pulmonary toxicity, and group assignments were correctly predicted for five of six new ENMs. Proof-of-concept was demonstrated for this framework. More comprehensive data are needed for further development and validation for use in deriving categorical occupational exposure limits.
Collapse
Affiliation(s)
- Nathan M Drew
- National Institute for Occupational Safety and Health (NIOSH), Nanotechnology Research Center (NTRC), Cincinnati, OH 45226, USA.
| | - Eileen D Kuempel
- National Institute for Occupational Safety and Health (NIOSH), Nanotechnology Research Center (NTRC), Cincinnati, OH 45226, USA
| | - Ying Pei
- West Virginia University, Department of Industrial and Management System Engineering, Morgantown, WV 26506, USA
| | - Feng Yang
- West Virginia University, Department of Industrial and Management System Engineering, Morgantown, WV 26506, USA
| |
Collapse
|
2
|
Vordos N, Giannakopoulos S, Gkika DA, Nolan JW, Kalaitzis C, Bandekas DV, Kontogoulidou C, Mitropoulos AC, Touloupidis S. Kidney stone nano-structure - Is there an opportunity for nanomedicine development? Biochim Biophys Acta Gen Subj 2017; 1861:1521-1529. [PMID: 28130156 DOI: 10.1016/j.bbagen.2017.01.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 01/15/2017] [Accepted: 01/21/2017] [Indexed: 12/22/2022]
Abstract
BACKGROUND Kidney stone analysis techniques are well-established in the field of materials characterization and provide information for the chemical composition and structure of a sample. Nanomedicine, on the other hand, is a field with an increasing rate of scientific research, a big budget and increasingly developing market. The key scientific question is if there is a possibility for the development of a nanomedicine to treat kidney stones. MAJOR CONCLUSIONS The main calculi characterization techniques such as X-ray Diffraction and Fourier Transform Infrared Spectroscopy can provide information about the composition of a kidney stone but not for its nanostructure. On the other hand, Small Angle X-ray Scattering and Nitrogen Porosimetry can show the nanostructural parameters of the calculi. The combination of the previously described parameters can be used for the development of nano-drugs for the treatment of urolithiasis, while no such nano-drugs exist yet. GENERAL SIGNIFICANCE In this study, we focus on the most well-known techniques for kidney stone analysis, the urolithiasis management and the search for possible nanomedicine for the treatment of kidney stone disease. We combine the results from five different analysis techniques in order to represent a three dimensional model and we propose a hypothetical nano-drug with gold nanoparticles. This article is part of a Special Issue entitled "Recent Advances in Bionanomaterials" Guest Editor: Dr. Marie-Louise Saboungi and Dr. Samuel D. Bader.
Collapse
Affiliation(s)
- N Vordos
- Hephaestus Advanced Laboratory, Eastern Macedonia and Thrace Institute of Technology, 65404, St. Lucas, Kavala, Greece; Department of Electrical Engineering, Eastern Macedonia and Thrace Institute of Technology.
| | - S Giannakopoulos
- Department of Urology, School of Medicine, Democritus University of Thrace, University Hospital of Alexandroupolis, Dragana, 68100 Alexandroupolis, Greece
| | - D A Gkika
- University of Antwerp, Applied Economics, Department of Engineering Management, Antwerp, Belgium
| | - J W Nolan
- Hephaestus Advanced Laboratory, Eastern Macedonia and Thrace Institute of Technology, 65404, St. Lucas, Kavala, Greece.
| | - Ch Kalaitzis
- Department of Urology, School of Medicine, Democritus University of Thrace, University Hospital of Alexandroupolis, Dragana, 68100 Alexandroupolis, Greece
| | - D V Bandekas
- Department of Electrical Engineering, Eastern Macedonia and Thrace Institute of Technology
| | - C Kontogoulidou
- University of Piraeus, Department of Business Administration, Piraeus, Greece
| | - A Ch Mitropoulos
- Hephaestus Advanced Laboratory, Eastern Macedonia and Thrace Institute of Technology, 65404, St. Lucas, Kavala, Greece
| | - S Touloupidis
- Department of Urology, School of Medicine, Democritus University of Thrace, University Hospital of Alexandroupolis, Dragana, 68100 Alexandroupolis, Greece
| |
Collapse
|