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Alyami NM, Alobadi H, Maodaa S, Alothman NS, Almukhlafi H, Yaseen KN, Alnakhli ZA, Alshiban NM, Elnagar DM, Rady A, Alharthi WA, Almetari B, Almeer R, Alarifi S, Ali D. Determination of dose- and time-dependent hepatotoxicity and apoptosis of Lanthanum oxide nanoparticles in female Swiss albino mice. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:17124-17139. [PMID: 38334922 DOI: 10.1007/s11356-024-32209-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 01/22/2024] [Indexed: 02/10/2024]
Abstract
Nanosized lanthanum oxide particles (La2O3) are commonly utilized in various industries. The potential health risks associated with La2O3 nanoparticles, cytotoxic effects at varying doses and time intervals, and the mechanisms behind their induction of behavioral changes remain uncertain and necessitate further investigation. Therefore, this study examined in vivo hepatotoxicity, considering the quantity (60, 150, and 300 mg/kg) and time-dependent induction of reactive oxygen species (ROS) over one week or 21 days. The mice received intraperitoneal injections of three different concentrations in Milli-Q water. Throughout the experiments, no physical changes or weight loss were observed among the groups. However, after 21 days, only the highest concentration showed signs of anxiety in the activity cage (p < 0.05). Subsequently, all animals treated with La2O3 NPs exhibited a significant loss of learning and memory recall using the Active Avoidances test, after 21 days (p < 0.001). Markers for anti-reactive oxygen species (ROS) such as superoxide dismutase (SOD) were significantly upregulated in response to all concentrations of NPs after seven days compared to the control group. This was confirmed by a significant increase in glutathione peroxidase (Gpx1) and pro-apoptotic Caspase-3 expression at the lowest and highest doses. Additionally, both transcription and protein levels of the anti-apoptotic BCL-2 surpassed P53 protein in a dosage-dependent manner, indicating activation of the primary anti-apoptosis pathway. After 21 days, P53 levels exceeded BCL-2 protein levels, confirming a significant loss of BCL-2 mRNA, particularly at the 300 mg/kg concentration. Furthermore, a higher transcription level of Caspase-3, SOD, and Gpx1 was observed, with the highest values detected at the 300 mg/kg concentration, indicating the activation of cell death. Histopathological analysis of the liver illustrated apoptotic bodies resulting from La2O3 NP concentration. The investigation revealed multiple inflammatory foci, cytoplasmic degeneration, steatosis, and DNA fragmentation consistent with increased damage over time due to higher concentrations. Blood samples were also analyzed to determine liver enzymatic changes, including alkaline phosphatase (ALP), alanine transaminase (ALT), aspartate aminotransferase (AST), and lipid profiles. The results showed significant differences among all La2O3 NP concentrations, with the most pronounced damage observed at the 300 mg/kg dose even after 21 days. Based on an animal model, this study suggests that La2O3 hepatotoxicity is likely caused by the size and shape of nanoparticles (NPs), following a dose and time-dependent mechanism that induces the production of reactive oxygen species and behavioral changes such as anxiety and memory loss.
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Affiliation(s)
- Nouf M Alyami
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia.
| | - Hussah Alobadi
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Saleh Maodaa
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Norah S Alothman
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Hanouf Almukhlafi
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Khadijah N Yaseen
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Zainab A Alnakhli
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Noura M Alshiban
- Advanced Diagnostics and Therapeutics Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh, 11442, Saudi Arabia
| | - Doaa M Elnagar
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Ahmed Rady
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Wed A Alharthi
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Bader Almetari
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Rafa Almeer
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Saud Alarifi
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Daoud Ali
- Department of Zoology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
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Jiang Z, Wang Y, Yu H, Yao N, Shen J, Li Y, Zhang H, Bai X. Efficient degradation of N-nitrosopyrrolidine using CoFe-LDH/AC particle electrode via heterogeneous Fenton-like reaction. CHEMOSPHERE 2023; 313:137446. [PMID: 36464019 DOI: 10.1016/j.chemosphere.2022.137446] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/28/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
With the rapid development of drinking water disinfection technology, extensive attentions are paid to the nitrogenous disinfection by-products (N-DBPs) that has strong carcinogenicity, thus their degradation becomes important for the health of human beings. In this work, for the first time, CoFe-LDH material used as particle electrode is proposed to treat trace N-nitrosopyrrolidine (NPYR) in a three-dimensional aeration electrocatalysis reactor (3DAER). The factors on the degradation efficiency and energy consumption of NPYR are systematically investigated, and the results of radical quenching experiments show that the degradation of NPYR is completed by combining with ·OH, ·O2and direct oxidation together. CoFe-LDH particle electrode plays a vital role in generating ·OH via heterogeneous ‾Fenton-like reaction. Moreover, the adsorbed saturated CoFe-LDH particle electrode can be regenerated by electrochemical action to induce further recycle adsorption and form in-situ electrocatalysis. This work pave a way for the removal of NPYR with high efficiency, low energy conservation and environmental protection.
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Affiliation(s)
- Zhuwu Jiang
- School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China.
| | - Yuchang Wang
- School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China
| | - Hai Yu
- School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China
| | - Ning Yao
- School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China
| | - Jyunhong Shen
- School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China
| | - Yan Li
- School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China
| | - HongYu Zhang
- School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China
| | - Xue Bai
- School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China.
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Huber EA, Cerreta JM. Mechanisms of cell injury induced by inhaled molybdenum trioxide nanoparticles in Golden Syrian Hamsters. Exp Biol Med (Maywood) 2022; 247:2067-2080. [PMID: 35757989 PMCID: PMC9837300 DOI: 10.1177/15353702221104033] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Molybdenum trioxide nanoparticles (MoO3 NPs) are extensively used in the biomedical, agricultural, and engineering fields that may increase exposure and adverse health effects to the human population. The purpose of this study is to evaluate a possible molecular mechanism leading to cell damage and death following pulmonary exposure to inhaled MoO3 NPs. Animals were separated into four groups: two control groups exposed to room air or aerosolized water and two treated groups exposed to aerosolized MoO3 NPs with a concentration of 5 mg/m3 NPs (4 h/day for eight days) and given a one-day (T-1) or seven-day (T-7) recovery period post exposure. Pulmonary toxicity was evaluated with total and differential cell counts. Increases were seen in total cell numbers, neutrophils, and multinucleated macrophages in the T-1 group, with increases in lymphocytes in the T-7 group (*P < 0.05). To evaluate the mechanism of toxicity, protein levels of Beclin-1, light chain 3 (LC3)-I/II, P-62, cathepsin B, NLRP3, ASC, caspase-1, interleukin (IL)-1β, and tumor necrosis factor-α (TNF-α) were assessed in lung tissue. Immunoblot analyses indicated 1.4- and 1.8-fold increases in Beclin-1 in treated groups (T-1 and T-7, respectively, *P < 0.05), but no change in protein levels of LC3-I/II in either treated group. The levels of cathepsin B were 2.8- and 2.3-fold higher in treated lungs (T-1 and T-7, respectively, *P < 0.05), the levels of NLRP3 had a fold increase of 2.5 and 3.6 (T-1 *P < 0.05, T-7 **P < 0.01, respectively), and the levels of caspase-1 indicated a 3.8- and 3.0-fold increase in treated lungs (T-1 and T-7, respectively, *P < 0.05). Morphological changes were studied using light and electron microscopy showing alterations to airway epithelium and the alveoli, along with particle internalization in macrophages. The results from this study may indicate that inhalation exposure to MoO3 NPs may interrupt the autophagic flux and induce cytotoxicity and lung injury through pyroptosis cell death and activation of caspase-1.
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Perumal AB, Nambiar RB, Moses J, Anandharamakrishnan C. Nanocellulose: Recent trends and applications in the food industry. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107484] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Jogaiah S, Paidi MK, Venugopal K, Geetha N, Mujtaba M, Udikeri SS, Govarthanan M. Phytotoxicological effects of engineered nanoparticles: An emerging nanotoxicology. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 801:149809. [PMID: 34467935 DOI: 10.1016/j.scitotenv.2021.149809] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 08/11/2021] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
Recent innovations in the field of nanoscience and technology and its proficiency as a part of inter-disciplinary science has set an eclectic display in innumerable branches of science, a majority in aliened health science of human and agriculture. Modern agricultural practices have been shifting towards the implementation of nanotechnology-based solutions to combat various emerging problems ranging from safe delivery of nutrients to sustainable approaches for plant protection. In these processes, engineered nanoparticles (ENPs) are widely used as nanocarriers (to deliver nutrients and pesticides) due to their high permeability, efficacy, biocompatibility, and biodegradability properties. Even though the constructive nature of nanoparticles (NPs), nanomaterials (NMs), and other modified or ENPs towards sustainable development in agriculture is referenced, the darker side i.e., eco-toxicological effects is still not covered to a larger extent. The overwhelming usage of these trending NMs has led to continuous persistence in the ecosystem, and their interface with the biotic and abiotic community, degradation lanes and intervention, which might lead to certain beneficial or malefic effects. Metal oxide NPs and polymeric NPs (Alginate, chitosan, and polyethylene glycol) are the most used ENPs, which are posing the nature of beneficial as well as environmentally concerning hazardous materials depending upon their fate and persistence in the ecosystem. The cautious usage of NMs in a scientific way is most essential to harness beneficial aspects of NMs in the field of agriculture whilst minimizing the eco-toxicological effects. The current review is focused on the toxicological effects of various NMs on plant physiology and health. It details interactions of plant intracellular components between applied/persistent NMs, which have brought out drastic changes in seed germination, crop productivity, direct and indirect interaction at the enzymatic as well as nuclear levels. In conclusion, ENPs can pose as genotoxicants that may alter the plant phenotype if not administered appropriately.
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Affiliation(s)
- Sudisha Jogaiah
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, Karnataka 580003, India.
| | - Murali Krishna Paidi
- AcSIR, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Gijubhai Badheka Marg, Bhavnagar, Gujarat 364002, India
| | - Krishnan Venugopal
- Department of Biochemistry, Vivekanandha College of Arts & Sciences for Women, Elayampalayam, Tiruchengode 637 205, Namakkal Dist., Tamilnadu, India
| | - Nagaraja Geetha
- Nanobiotechnology Laboratory, Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysuru 570006, Karnataka, India
| | - Muhammad Mujtaba
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Espoo FI-00076, Finland; Institute of Biotechnology, Ankara University, Ankara 06110, Turkey
| | - Shashikant Shiddappa Udikeri
- Agricultural Research Station, Dharwad Farm, University of Agricultural Sciences, Dharwad 580005, Karnataka, India
| | - Muthusamy Govarthanan
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, South Korea.
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Toxicological studies and some functional properties of carboxymethylated cellulose nanofibrils as potential food ingredient. Int J Biol Macromol 2021; 190:887-893. [PMID: 34534583 DOI: 10.1016/j.ijbiomac.2021.09.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 08/30/2021] [Accepted: 09/10/2021] [Indexed: 12/22/2022]
Abstract
Carboxymethylated cellulose nanofibrils (CNF) with different carboxyl contents (0, 0.36, 0.72 and 1.24 mmol/g) were prepared and characterized via morphology, diameter distribution, zeta potential, structural features, rheological properties, suspension stability, and thermal properties. The results of toxicological studies of ingested CNF via in vitro and in vivo models were present. In vitro studies used an epithelial-like cell line (Caco-2) to assess the effects of a 24 h incubation with CNF, in which no significant cytotoxicity was observed. In vivo studies were evaluated in mice gavage once per day for 8 weeks with 1% or 3.5% w/w suspension of CNF in water. Blood and serum were collected for analysis. No significant differences in hematology, and serum markers were observed between controls and mice given CNF suspensions. Weight, food intake and feces were recorded for growing development and nutrient retention in feces was measured for investigation of functional properties of CNFs. Mice given CNF suspensions gained a significant increment in fecal fat but a reduction in food intake and weight compared to controls. These findings suggested that CNFs are non-toxic and have potentials in behaving as food additives or supplements to reduce caloric intake.
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Guo Z, DeLoid GM, Cao X, Bitounis D, Sampathkumar K, Woei Ng K, Joachim Loo SC, Philip D. Effects of ingested nanocellulose and nanochitosan materials on carbohydrate digestion and absorption in an in vitro small intestinal epithelium model. ENVIRONMENTAL SCIENCE. NANO 2021; 8:2554-2568. [PMID: 34840801 PMCID: PMC8622715 DOI: 10.1039/d1en00233c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Nanoscale materials derived from natural biopolymers like cellulose and chitosan have many potentially useful agri-food and oral drug delivery applications. Because of their large and potentially bioactive surface areas and other unique physico-chemical properties, it is essential when evaluating their toxicological impact to assess potential effects on the digestion and absorption of co-ingested nutrients. Here, the effects of cellulose nanofibers (CNF), cellulose nanocrystals (CNC), and chitosan nanoparticles (Chnp) on the digestion and absorption of carbohydrates were studied. Starch digestion was assessed by measuring maltose released during simulated digestion of starch solutions. Glucose absorption was assessed by measuring translocation from the resulting digestas across an in vitro transwell tri-culture model of the small intestinal epithelium and calculating the area under the curve increase in absorbed glucose, analogous to the glycemic index. At 1% w/w, CNF and Chnp had small but significant effects (11% decrease and 14% increase, respectively) and CNC had no effect on starch hydrolysis during simulated digestion of a 1% w/w rice starch solution. In addition, at 2% w/w CNC had no effect on amylolysis in 1% solutions of either rice, corn, or wheat starch. Similarly, absorption of glucose from digestas of starch solutions (i.e., from maltose), was unaffected by 1% w/w CNF or CNC, but was slightly increased (10%, p<0.05) by 1% Chnp, possibly due to the slightly higher maltose concentration in the Chnp-containing digestas. In contrast, all of the test materials caused sharp increases (~1.2, 1.5, and 1.6 fold for CNC, CNF, and Chnp, respectively) in absorption of glucose from starch-free digestas spiked with free glucose at a concentration corresponding to complete hydrolysis of 1% w/w starch. The potential for ingested cellulose and chitosan nanomaterials to increase glucose absorption could have important health implications. Further studies are needed to elucidate the mechanisms underlying the observed increases and to evaluate the potential glycemic effects in an intact in vivo system.
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Affiliation(s)
- Zhongyuan Guo
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Glen M DeLoid
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Xiaoqiong Cao
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Dimitrios Bitounis
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Kaarunya Sampathkumar
- School of Materials Science and Engineering, Nanyang Technological University 50 Nanyang Avenue 639798, Singapore, Singapore
| | - Kee Woei Ng
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
- School of Materials Science and Engineering, Nanyang Technological University 50 Nanyang Avenue 639798, Singapore, Singapore
- Skin Research Institute of Singapore, 8A Biomedical Grove, #06-06 Immunos, 138648, Singapore
- Environmental Chemistry and Materials Centre, Nanyang Environment & Water Research Institute, 1 Cleantech Loop, CleanTech One, Singapore 637141
| | - Say Chye Joachim Loo
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
- School of Materials Science and Engineering, Nanyang Technological University 50 Nanyang Avenue 639798, Singapore, Singapore
| | - Demokritou Philip
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
- School of Materials Science and Engineering, Nanyang Technological University 50 Nanyang Avenue 639798, Singapore, Singapore
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Xiao Z, Yue L, Wang C, Chen F, Ding Y, Liu Y, Cao X, Chen Z, Rasmann S, Wang Z. Downregulation of the photosynthetic machinery and carbon storage signaling pathways mediate La 2O 3 nanoparticle toxicity on radish taproot formation. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:124971. [PMID: 33429308 DOI: 10.1016/j.jhazmat.2020.124971] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/18/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
The molecular and physiological mechanisms of how rare earth oxide nanoparticles (NPs) alter radish (Raphanus sativus L.) taproot formation and cracking were investigated in the present study. We compared plants that received suspensions of 10, 50, 100, 300 mg L-1 of La2O3 NPs, 300 m L-1 La2O3 bulk-particles (BPs), 0.8 m L-1 La3+, or only water for six days during their tuber formation period. 100 and 300 mg L-1 La2O3 NPs exposure decreased storage root biomass by 38% and 60%, respectively, and they both induced visible root cracking. Physiological analyses showed that La2O3 NPs exposure (>100 mg L-1) significantly inhibited leaf net photosynthetic rate, cell wall pectin synthesis of both storage root epidermis and xylem parenchyma tissues, but increased the contents of cellulose and hemicellulose 1 in root epidermis cell walls. Moreover, transcriptome analysis further found that La2O3 NPs changed root cell wall structure by down-regulating core genes involved in cell wall pectin and IAA biosynthesis, which coincided with the observed La2O3 NPs-induced root cracking. Our results revealed the molecular mechanisms related to cell wall carbohydrate metabolism in response to NPs stress, providing a step forward for understanding the causes of NPs phytotoxicity on edible plant taproot formation and cracking.
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Affiliation(s)
- Zhenggao Xiao
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Le Yue
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Chuanxi Wang
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Feiran Chen
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Ying Ding
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Yinglin Liu
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Xuesong Cao
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Zhe Chen
- Institute of Tropical Fruit Trees, Hainan Academy of Agricultural Science, Haikou 571100, China
| | - Sergio Rasmann
- Institute of Biology, University of Neuchâtel, Rue-Emile-Argand 11, 2000 Neuchâtel, Switzerland
| | - Zhenyu Wang
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China.
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Zheng R, Zhang H. Regulation of Electronic Properties of Metal Oxide Nanoparticles to Reveal Their Toxicity Mechanism and Safe‐by‐Design Approach. Adv Biol (Weinh) 2021. [DOI: 10.1002/adbi.202000220] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Runxiao Zheng
- Laboratory of Chemical Biology Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street, Jilin Changchun 130022 P. R. China
- School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230052 P. R. China
| | - Haiyuan Zhang
- Laboratory of Chemical Biology Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street, Jilin Changchun 130022 P. R. China
- School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230052 P. R. China
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Microbacterium sp. MRS-1, a potential bacterium for cobalt reduction and synthesis of less/non-toxic cobalt oxide nanoparticles (Co3O4). BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2020. [DOI: 10.1186/s43088-020-00070-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Abstract
Background
Detoxification of heavy metal pollutants in wastewater has become a serious problem to surrounding environment. This research was conducted to utilize a potential heavy metal-resistant bacterium for the remediation of cobalt metal and simultaneous synthesis of cobalt oxide nanoparticles in the form of powder for various industrial applications. Metal oxide nanoparticles have great applications in electrochemical devices such as supercapacitors, biosensors, and batteries.
Method
A heavy metal-resistant bacterium Microbacterium sp. MRS-1 isolated from electroplating industrial effluent reduced cobalt ions from an initial concentration of 200 mg/L to 26 mg/L were analyzed by atomic absorption spectroscopy. Instrumental analysis of bacterially synthesized Co3O4 has been characterized. Cytotoxicity of synthesized nanoparticles was assessed by MTT assay.
Results
Microbacterium sp. MRS-1 isolated from electroplating industrial effluent was found to be suitable for cobalt oxide nanoparticles as it showed tolerance towards high concentration of metal. The nutrient broth containing metal solution and Microbacterium sp. MRS-1 showed color change from light pink to dark pink indicated the formation of extracellular nanoparticles. It also converted soluble cobalt salts into less soluble cobalt oxide nanoparticles outside the cell which allows easy recovery of nanoparticles without the destruction of cells and simultaneous detoxification of toxic metal ions. Electron microscopic imaging verified that nanoparticles were predominantly surrounding the bacterial cells and SEM imaging revealed that the produced particles were in the range of 10–100 nm in size. XRD spectrum exhibited 2θ values were corresponding to cubic face-centered cobalt oxide (Co3O4) nanoparticles.
Conclusion
The present study investigated new prospective for eco-friendly detoxification of toxic heavy metal Co from metal-polluted sites and the production of cobalt oxide nanoparticles in powder form for clinical and other industrial applications.
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Guo NL, Bello D, Ye Q, Tagett R, Chanetsa L, Singh D, Poh TY, Setyawati MI, Chotirmall SH, Ng KW, Demokritou P. Pilot deep RNA sequencing of worker blood samples from Singapore printing industry for occupational risk assessment. NANOIMPACT 2020; 19:100248. [PMID: 33511305 PMCID: PMC7840153 DOI: 10.1016/j.impact.2020.100248] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Several engineered nanomaterials (ENMs) are used in toner-based printing equipment (TPE) including laser printers and photocopiers to improve toner performance. High concentration of airborne nanoparticles due to TPE emissions has been documented in copy centers and chamber studies. Recent animal inhalation studies by our group suggested exposure to laser printer-emitted nanoparticles (PEPs) increased cardiovascular risk by impairing ventricular performance and inducing hypertension and arrhythmia, consistent with global transcriptomic and metabolomic profiling results. There has been no genome-wide transcriptomic analysis of workers exposed to TPE emissions to systematically assess the occupational exposure health risks. In this pilot study, deep RNA sequencing of blood samples of workers in two printing companies in Singapore was performed. The genome-scale analysis of the blood samples from TPE exposed workers revealed perturbed transcriptional activities related to inflammatory and immune responses, metabolism, cardiovascular impairment, neurological diseases, oxidative stress, physical morphogenesis/deformation, and cancer, when compared with the control peers (office workers). Many of these disease risks associated with particle inhalation exposures in such work environments were consistent with the observation from the PEPs rat inhalation studies. In particular, the cell adhesion molecules (CAMs) was a top significantly perturbed pathway in blood samples from exposed workers compared with the office workers in both companies. The protein expression of sICAM was verified in plasma of exposed workers, showing a positive correlation with daily average nanoparticle concentration in indoor air measured in these two companies. Larger scale genomic and molecular epidemiology studies in copier operators are warranted in order to assess potential risks from such particulate matter exposures.
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Affiliation(s)
- Nancy Lan Guo
- West Virginia University Cancer Institute/School of Public Health, West Virginia University, Morgantown, WV 26506
- Correspondence: ; Tel: 1-304-293-6455
| | - Dhimiter Bello
- Department of Biomedical and Nutritional Sciences, Zuckerberg College of Health Sciences, University of Massachusetts, Lowell, MA 01854
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA
| | - Qing Ye
- Lane Department of Computer Science and Electrical Engineering, Statler College of Engineering and Mineral Resources, West Virginia University, Morgantown, WV 26506
| | - Rebecca Tagett
- BRCF Bioinformatics Core, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Lucia Chanetsa
- Department of Biomedical and Nutritional Sciences, Zuckerberg College of Health Sciences, University of Massachusetts, Lowell, MA 01854
| | - Dilpreet Singh
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA
| | - Tuang Yeow Poh
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Magdiel Inggrid Setyawati
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Sanjay H. Chotirmall
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Kee Woei Ng
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
- Environmental Chemistry and Materials Center, Nanyang Environment & Water Research Institute, Singapore 637141, Singapore
| | - Philip Demokritou
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
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12
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Yuan L, Li Q, Bai D, Shang X, Hu F, Chen Z, An T, Chen Y, Zhang X. La 2O 3 Nanoparticles Induce Reproductive Toxicity Mediated by the Nrf-2/ARE Signaling Pathway in Kunming Mice. Int J Nanomedicine 2020; 15:3415-3431. [PMID: 32523341 PMCID: PMC7236057 DOI: 10.2147/ijn.s230949] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Accepted: 04/14/2020] [Indexed: 12/12/2022] Open
Abstract
Purpose Lanthanum oxide (La2O3) nanoparticles (NPs) have been widely used in catalytic and photoelectric applications, but the reproductive toxicity is still unclear. This study evaluated the reproductive toxicity of two different-sized La2O3 particles in the testes. Materials and Methods Fifty Kunming mice were randomly divided into five groups. Mice were treated with La2O3 NPs by repeated intragastric administration for 90 days (control, nano-sized with 5, 10, 50 mg/kg BW and micro-sized with 50 mg/kg BW). Mice in the control group were treated with de-ionised water without La2O3 NPs. Sperm parameters, testicular histopathology, TEM assessment, hormone assay and nuclear factor erythroid 2-related factor 2 (Nrf-2) pathway were performed and evaluated. Results The body weight of mice treated with La2O3 NPs or not had no difference; sperm parameters and histological assessment showed that La2O3 NPs could induce reproductive toxicity in the testicle. Serum testosterone and gonadotropin-releasing hormone (GnRH) in the NH (nano-sized with 50 mg/kg BW) group were markedly decreased relative to control group, and an increase of luteinizing hormone (LH) in NH group was detected . Additionally, transmission electron microscopy revealed that the ultrastructural abnormalities induced by La2O3 NPs were more severe than La2O3 MPs in the testes. Furthermore, La2O3 NPs treatment inhibited the translocation of nuclear factor erythroid 2-related factor 2 (Nrf-2) from the cytoplasm into the nucleus as well as the expression of downstream genes NAD(P)H quinone oxidoreductase1 (NQO1), hemeoxygenase 1 (HO-1) and (glutathione peroxidase) GSH-Px, thus abrogating Nrf-2-mediated defense mechanisms against oxidative stress. Conclusions The results of this study demonstrated that La2O3 NPs improved the spermatogenesis defects in mice. La2O3 NPs inhibited Nrf-2/ARE signaling pathway that resulted in apoptosis in the mice testes.
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Affiliation(s)
| | | | | | | | | | - Zhenfei Chen
- Environmental Monitoring Center Tang Shan, Tangshan 063210, Hebei, People's Republic of China
| | | | - Yajing Chen
- College of Pharmacy of North China University of Science and Technology, Tangshan 063210, Hebei, People's Republic of China
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13
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Khare S, DeLoid GM, Molina RM, Gokulan K, Couvillion SP, Bloodsworth KJ, Eder EK, Wong AR, Hoyt DW, Bramer LM, Metz TO, Thrall BD, Brain JD, Demokritou P. Effects of ingested nanocellulose on intestinal microbiota and homeostasis in Wistar Han rats. NANOIMPACT 2020; 18:100216. [PMID: 32190784 PMCID: PMC7080203 DOI: 10.1016/j.impact.2020.100216] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Micron scale cellulose materials are "generally regarded as safe" (GRAS) as binders and thickeners in food products. However, nanocellulose materials, which have unique properties that can improve food quality and safety, have not received US-Food and Drug Administration (FDA) approval as food ingredients. In vitro and in vivo toxicological studies of ingested nanocellulose revealed minimal cytotoxicity, and no subacute in vivo toxicity. However, ingested materials may modulate gut microbial populations, or alter aspects of intestinal function not elucidated by toxicity testing, which could have important health implications. Here, we report the results of studies conducted in a rat gavage model to assess the effects of ingested cellulose nanofibrils (CNF) on the fecal microbiome and metabolome, intestinal epithelial expression of cell junction genes, and ileal cytokine production. Feces, plasma, and ilea were collected from Wistar Han rats before and after five weeks of biweekly gavages with water or cream, with or without 1% CNF. CNF altered microbial diversity, and diminished specific species that produce short chain fatty acids, and that are associated with increased serum insulin and IgA production. CNF had few effects on the fecal metabolome, with significant changes in only ten metabolites of 366 measured. Exposure to CNF also altered expression of epithelial cell junction genes, and increased production of cytokines that modulate proliferation of CD8 T cells. These perturbations likely represent initiation of an adaptive immune response, however, no associated pathology was seen within the duration of the study. Additional studies are needed to better understand the health implications of these changes in long term.
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Affiliation(s)
- Sangeeta Khare
- Division of Microbiology, National Center for Toxicological Research, U.S. Food & Drug Administration, Jefferson, AR 72079, USA
| | - Glen M. DeLoid
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Ramon M. Molina
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Kuppan Gokulan
- Division of Microbiology, National Center for Toxicological Research, U.S. Food & Drug Administration, Jefferson, AR 72079, USA
| | - Sneha P. Couvillion
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Kent J. Bloodsworth
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Elizabeth K. Eder
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Allison R. Wong
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, USA
| | - David W. Hoyt
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Lisa M. Bramer
- Computing & Analytics Division, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99352, USA
| | - Thomas O. Metz
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Brian D. Thrall
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Joseph D. Brain
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Philip Demokritou
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
- corresponding author: Philip Demokritou,
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14
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Yuan L, Bai D, Meng L, Wang H, Sun Z, An T, Chen Z, Deng X, Zhang X. Effects of intragastric administration of La 2O 3 nanoparticles on mouse testes. J Toxicol Sci 2020; 45:411-422. [DOI: 10.2131/jts.45.411] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Lu Yuan
- College of Public Health, North China University of Science and Technology, China
| | - Disi Bai
- College of psychology, North China University of Science and Technology, China
| | - Lijun Meng
- Department of Environmental and Chemical Engineering, Tangshan University, China
| | - Hong Wang
- College of psychology, North China University of Science and Technology, China
| | - Zhaoyu Sun
- College of psychology, North China University of Science and Technology, China
| | - Tianyang An
- College of Ji Tang, North China University of Science and Technology, China
| | - Zhenfei Chen
- Environmental Monitoring Center of Tang Shan, China
| | - Xuenan Deng
- Department of Social science, Tangshan Normal University, China
| | - Xiujun Zhang
- College of Public Health, North China University of Science and Technology, China
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15
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Guo NL, Poh TY, Pirela S, Farcas MT, Chotirmall SH, Tham WK, Adav SS, Ye Q, Wei Y, Shen S, Christiani DC, Ng KW, Thomas T, Qian Y, Demokritou P. Integrated Transcriptomics, Metabolomics, and Lipidomics Profiling in Rat Lung, Blood, and Serum for Assessment of Laser Printer-Emitted Nanoparticle Inhalation Exposure-Induced Disease Risks. Int J Mol Sci 2019; 20:E6348. [PMID: 31888290 PMCID: PMC6940784 DOI: 10.3390/ijms20246348] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 12/12/2019] [Accepted: 12/13/2019] [Indexed: 12/13/2022] Open
Abstract
Laser printer-emitted nanoparticles (PEPs) generated from toners during printing represent one of the most common types of life cycle released particulate matter from nano-enabled products. Toxicological assessment of PEPs is therefore important for occupational and consumer health protection. Our group recently reported exposure to PEPs induces adverse cardiovascular responses including hypertension and arrythmia via monitoring left ventricular pressure and electrocardiogram in rats. This study employed genome-wide mRNA and miRNA profiling in rat lung and blood integrated with metabolomics and lipidomics profiling in rat serum to identify biomarkers for assessing PEPs-induced disease risks. Whole-body inhalation of PEPs perturbed transcriptional activities associated with cardiovascular dysfunction, metabolic syndrome, and neural disorders at every observed time point in both rat lung and blood during the 21 days of exposure. Furthermore, the systematic analysis revealed PEPs-induced transcriptomic changes linking to other disease risks in rats, including diabetes, congenital defects, auto-recessive disorders, physical deformation, and carcinogenesis. The results were also confirmed with global metabolomics profiling in rat serum. Among the validated metabolites and lipids, linoleic acid, arachidonic acid, docosahexanoic acid, and histidine showed significant variation in PEPs-exposed rat serum. Overall, the identified PEPs-induced dysregulated genes, molecular pathways and functions, and miRNA-mediated transcriptional activities provide important insights into the disease mechanisms. The discovered important mRNAs, miRNAs, lipids and metabolites may serve as candidate biomarkers for future occupational and medical surveillance studies. To the best of our knowledge, this is the first study systematically integrating in vivo, transcriptomics, metabolomics, and lipidomics to assess PEPs inhalation exposure-induced disease risks using a rat model.
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Affiliation(s)
- Nancy Lan Guo
- West Virginia University Cancer Institute/School of Public Health, West Virginia University, Morgantown, WV 26506, USA;
| | - Tuang Yeow Poh
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore; (T.Y.P.); (S.H.C.); (S.S.); (D.C.C.)
| | - Sandra Pirela
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, T. H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA; (S.P.); (K.W.N.); (P.D.)
| | - Mariana T. Farcas
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA; (M.T.F.); (Y.Q.)
| | - Sanjay H. Chotirmall
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore; (T.Y.P.); (S.H.C.); (S.S.); (D.C.C.)
| | - Wai Kin Tham
- Singapore Phenome Centre, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 636921, Singapore; (W.K.T.); (S.S.A.)
| | - Sunil S. Adav
- Singapore Phenome Centre, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 636921, Singapore; (W.K.T.); (S.S.A.)
| | - Qing Ye
- West Virginia University Cancer Institute/School of Public Health, West Virginia University, Morgantown, WV 26506, USA;
| | - Yongyue Wei
- Key Lab for Modern Toxicology, Department of Epidemiology and Biostatistics and Ministry of Education (MOE), School of Public Health, Nanjing Medical University, Nanjing 210029, China;
| | - Sipeng Shen
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore; (T.Y.P.); (S.H.C.); (S.S.); (D.C.C.)
| | - David C. Christiani
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore; (T.Y.P.); (S.H.C.); (S.S.); (D.C.C.)
| | - Kee Woei Ng
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, T. H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA; (S.P.); (K.W.N.); (P.D.)
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
- Environmental Chemistry and Materials Centre, Nanyang Environment & Water Research Institute, Singapore 637141, Singapore
| | - Treye Thomas
- Office of Hazard Identification and Reduction, U.S. Consumer Product Safety Commission, Rockville, MD 20814, USA;
| | - Yong Qian
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA; (M.T.F.); (Y.Q.)
| | - Philip Demokritou
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, T. H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA; (S.P.); (K.W.N.); (P.D.)
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16
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DeLoid GM, Cao X, Molina RM, Silva DI, Bhattacharya K, Ng KW, Loo SCJ, Brain JD, Demokritou P. Toxicological effects of ingested nanocellulose in in vitro intestinal epithelium and in vivo rat models. ENVIRONMENTAL SCIENCE. NANO 2019; 6:2105-2115. [PMID: 32133146 PMCID: PMC7055654 DOI: 10.1039/c9en00184k] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Cellulose is widely used as a thickener and filler in foods and drugs. It has been designated "generally regarded as safe" (GRAS). Nanocellulose (NC) has many additional potential applications designed to improve food quality and safety, but has not yet been designated as GRAS. Here we present results of toxicological studies of ingested NC in physiologically relevant in vitro and in vivo systems. In vitro studies employed a gastrointestinal tract simulator to digest two widely-used forms of NC, nanocellulose fibrils (CNF) and cellulose nanocrystals (CNC), at 0.75 and 1.5% w/w, in a fasting diet as well as in a standardized food model based on the average American diet. A triculture model of small intestinal epithelium was used to assess effects of a 24-hour incubation with the digested products (digesta) on cell layer integrity, cytotoxicity and oxidative stress. Other than a 10% increase over controls in reactive oxygen species (ROS) production with 1.5% w/w CNC, no significant changes in cytotoxicity, ROS or monolayer integrity were observed. In vivo toxicity was evaluated in rats gavaged twice weekly for five weeks with 1% w/w suspensions of CNF in either water or cream. Blood, serum, lung, liver, kidney, and small intestine were collected for analysis. No significant differences in hematology, serum markers or histology were observed between controls and rats given CNF suspensions. These findings suggest that ingested NC has little acute toxicity, and is likely non-hazardous when ingested in small quantities. Additional chronic feeding studies are required to assess long term effects, and potential detrimental effects on the gut microbiome and absorbance of essential micronutrients. These studies are underway, and their outcome will be reported in the near future.
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Affiliation(s)
- Glen M. DeLoid
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
- corresponding authors: Philip Demokritou, , Glen M. DeLoid,
| | - Xiaoqiong Cao
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Ramon M. Molina
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Daniel Imbassahy Silva
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Kunal Bhattacharya
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Kee Woei Ng
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
- Environmental Chemistry and Materials Centre, Nanyang Environment & Water Research Institute, 1 Cleantech Loop, CleanTech One, Singapore 637141
| | - Say Chye Joachim Loo
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
| | - Joseph D. Brain
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Philip Demokritou
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
- corresponding authors: Philip Demokritou, , Glen M. DeLoid,
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17
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Ertuğrul H, Yalçın B, Güneş M, Kaya B. Ameliorative effects of melatonin against nano and ionic cobalt induced genotoxicity in two in vivo Drosophila assays. Drug Chem Toxicol 2019; 43:279-286. [DOI: 10.1080/01480545.2019.1585444] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Havva Ertuğrul
- Faculty of Sciences, Department of Biology, Akdeniz University, Antalya, Turkey
| | - Burçin Yalçın
- Faculty of Sciences, Department of Biology, Akdeniz University, Antalya, Turkey
| | - Merve Güneş
- Faculty of Sciences, Department of Biology, Akdeniz University, Antalya, Turkey
| | - Bülent Kaya
- Faculty of Sciences, Department of Biology, Akdeniz University, Antalya, Turkey
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18
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Zhang T, Gaffrey MJ, Thrall BD, Qian WJ. Mass spectrometry-based proteomics for system-level characterization of biological responses to engineered nanomaterials. Anal Bioanal Chem 2018; 410:6067-6077. [PMID: 29947897 PMCID: PMC6119095 DOI: 10.1007/s00216-018-1168-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 05/17/2018] [Accepted: 05/28/2018] [Indexed: 12/21/2022]
Abstract
The widespread use of engineered nanomaterials or nanotechnology makes the characterization of biological responses to nanomaterials an important area of research. The application of omics approaches, such as mass spectrometry-based proteomics, has revealed new insights into the cellular responses of exposure to nanomaterials, including how nanomaterials interact and alter cellular pathways. In addition, exposure to engineered nanomaterials often leads to the generation of reactive oxygen species and cellular oxidative stress, which implicates a redox-dependent regulation of cellular responses under such conditions. In this review, we discuss quantitative proteomics-based approaches, with an emphasis on redox proteomics, as a tool for system-level characterization of the biological responses induced by engineered nanomaterials. Graphical abstract ᅟ.
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Affiliation(s)
- Tong Zhang
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Matthew J Gaffrey
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Brian D Thrall
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Wei-Jun Qian
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA.
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19
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Ganguly P, Breen A, Pillai SC. Toxicity of Nanomaterials: Exposure, Pathways, Assessment, and Recent Advances. ACS Biomater Sci Eng 2018; 4:2237-2275. [DOI: 10.1021/acsbiomaterials.8b00068] [Citation(s) in RCA: 154] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Priyanka Ganguly
- Nanotechnology and Bio-Engineering Research Group, Department of Environmental Science, School of Science, Institute of Technology Sligo, Ash Lane, Sligo F91 YW50, Ireland
- Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology Sligo, Ash Lane, Sligo F91 YW50, Ireland
| | - Ailish Breen
- Nanotechnology and Bio-Engineering Research Group, Department of Environmental Science, School of Science, Institute of Technology Sligo, Ash Lane, Sligo F91 YW50, Ireland
- Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology Sligo, Ash Lane, Sligo F91 YW50, Ireland
| | - Suresh C. Pillai
- Nanotechnology and Bio-Engineering Research Group, Department of Environmental Science, School of Science, Institute of Technology Sligo, Ash Lane, Sligo F91 YW50, Ireland
- Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology Sligo, Ash Lane, Sligo F91 YW50, Ireland
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20
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Cappellini F, Hedberg Y, McCarrick S, Hedberg J, Derr R, Hendriks G, Odnevall Wallinder I, Karlsson HL. Mechanistic insight into reactivity and (geno)toxicity of well-characterized nanoparticles of cobalt metal and oxides. Nanotoxicology 2018; 12:602-620. [DOI: 10.1080/17435390.2018.1470694] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
| | - Yolanda Hedberg
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Chemistry, Division of Surface and Corrosion Science, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Sarah McCarrick
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Jonas Hedberg
- Department of Chemistry, Division of Surface and Corrosion Science, KTH Royal Institute of Technology, Stockholm, Sweden
| | | | | | - Inger Odnevall Wallinder
- Department of Chemistry, Division of Surface and Corrosion Science, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Hanna L. Karlsson
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
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21
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Guo C, Buckley A, Marczylo T, Seiffert J, Römer I, Warren J, Hodgson A, Chung KF, Gant TW, Smith R, Leonard MO. The small airway epithelium as a target for the adverse pulmonary effects of silver nanoparticle inhalation. Nanotoxicology 2018; 12:539-553. [PMID: 29750584 DOI: 10.1080/17435390.2018.1465140] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Experimental modeling to identify specific inhalation hazards for nanomaterials has in the main focused on in vivo approaches. However, these models suffer from uncertainties surrounding species-specific differences and cellular targets for biologic response. In terms of pulmonary exposure, approaches which combine 'inhalation-like' nanoparticulate aerosol deposition with relevant human cell and tissue air-liquid interface cultures are considered an important complement to in vivo work. In this study, we utilized such a model system to build on previous results from in vivo exposures, which highlighted the small airway epithelium as a target for silver nanoparticle (AgNP) deposition. RNA-SEQ was used to characterize alterations in mRNA and miRNA within the lung. Organotypic-reconstituted 3D human primary small airway epithelial cell cultures (SmallAir) were exposed to the same spark-generated AgNP and at the same dose used in vivo, in an aerosol-exposure air-liquid interface (AE-ALI) system. Adverse effects were characterized using lactate, LDH release and alterations in mRNA and miRNA. Modest toxicological effects were paralleled by significant regulation in gene expression, reflective mainly of specific inflammatory events. Importantly, there was a level of concordance between gene expression changes observed in vitro and in vivo. We also observed a significant correlation between AgNP and mass equivalent silver ion (Ag+) induced transcriptional changes in SmallAir cultures. In addition to key mechanistic information relevant for our understanding of the potential health risks associated with AgNP inhalation exposure, this work further highlights the small airway epithelium as an important target for adverse effects.
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Affiliation(s)
- Chang Guo
- a Centre for Radiation, Chemical and Environmental Hazards , Public Health England , Oxfordshire , UK.,b The National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Health Impact of Environmental Hazards at King's College London in partnership with Public Health England (PHE) in collaboration with Imperial College London , London , UK
| | - Alison Buckley
- a Centre for Radiation, Chemical and Environmental Hazards , Public Health England , Oxfordshire , UK.,b The National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Health Impact of Environmental Hazards at King's College London in partnership with Public Health England (PHE) in collaboration with Imperial College London , London , UK
| | - Tim Marczylo
- a Centre for Radiation, Chemical and Environmental Hazards , Public Health England , Oxfordshire , UK.,b The National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Health Impact of Environmental Hazards at King's College London in partnership with Public Health England (PHE) in collaboration with Imperial College London , London , UK
| | - Joanna Seiffert
- c Airways Disease, National Heart & Lung Institute, Imperial College , London , UK
| | - Isabella Römer
- a Centre for Radiation, Chemical and Environmental Hazards , Public Health England , Oxfordshire , UK.,b The National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Health Impact of Environmental Hazards at King's College London in partnership with Public Health England (PHE) in collaboration with Imperial College London , London , UK
| | - James Warren
- a Centre for Radiation, Chemical and Environmental Hazards , Public Health England , Oxfordshire , UK
| | - Alan Hodgson
- a Centre for Radiation, Chemical and Environmental Hazards , Public Health England , Oxfordshire , UK
| | - Kian Fan Chung
- c Airways Disease, National Heart & Lung Institute, Imperial College , London , UK
| | - Timothy W Gant
- a Centre for Radiation, Chemical and Environmental Hazards , Public Health England , Oxfordshire , UK.,b The National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Health Impact of Environmental Hazards at King's College London in partnership with Public Health England (PHE) in collaboration with Imperial College London , London , UK
| | - Rachel Smith
- a Centre for Radiation, Chemical and Environmental Hazards , Public Health England , Oxfordshire , UK.,b The National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Health Impact of Environmental Hazards at King's College London in partnership with Public Health England (PHE) in collaboration with Imperial College London , London , UK
| | - Martin O Leonard
- a Centre for Radiation, Chemical and Environmental Hazards , Public Health England , Oxfordshire , UK.,b The National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Health Impact of Environmental Hazards at King's College London in partnership with Public Health England (PHE) in collaboration with Imperial College London , London , UK
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22
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Chalbot MCG, Pirela SV, Schifman L, Kasaraneni V, Oyanedel-Craver V, Bello D, Castranova V, Qian Y, Thomas T, Kavouras IG, Demokritou P. Synergistic effects of engineered nanoparticles and organics released from laser printers using nano-enabled toners: potential health implications from exposures to the emitted organic aerosol. ENVIRONMENTAL SCIENCE. NANO 2017; 4:2144-2156. [PMID: 30197786 PMCID: PMC6121699 DOI: 10.1039/c7en00573c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Recent studies have shown that engineered nanoparticles (ENPs) are incorporated into toner powder used in printing equipment and released during their use. Thus, understanding the functional and structural composition and potential synergistic effects of this complex aerosol and released gaseous co-pollutants is critical in assessing their potential toxicological implications and risks. In this study, toner powder and PEPs were thoroughly examined for functional and molecular composition of the organic fraction and the concentration profile of 16 Environmental Protection Agency (EPA)-priority polycyclic aromatic hydrocarbons (PAH) using state of the art analytical methods. Results show significant differences in abundance of non-exchangeable organic hydrogen of toner powder and PEPs, with a stronger aromatic spectral signature in PEPs. Changes in structural composition of PEPs are indicative of radical additions and free-radical polymerization favored by catalytic reactions, resulting in formation of functionalized organic species. Particularly, accumulation of aromatic carbons with strong styrene-like molecular signatures on PEPs is associated with formation of semivolatile heavier aromatic species (i.e., PAHs). Further, the transformation of low molecular weight PAHs in the toner powder to high molecular weight PAHs in PEPs was documented and quantified. This may be a result of synergistic effects from catalytic metal/metal oxide ENPs incorporated into the toner and the presence/release of semi-volatile organic species (SVOCs). The presence of known carcinogenic PAHs on PEPs raises public health concerns and warrants further toxicological assessment.
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Affiliation(s)
- Marie-Cecile G Chalbot
- Department of Environmental Health Sciences, University of Alabama at Birmingham, Birmingham, Alabama
| | - Sandra V Pirela
- Department of Environmental Health, Center for Nanotechnology and Nanotoxicology, T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
| | - Laura Schifman
- Department of Civil and Environmental Engineering, University of Rhode Island, Kingston, Rhode Island
| | - Varun Kasaraneni
- Department of Civil and Environmental Engineering, University of Rhode Island, Kingston, Rhode Island
| | - Vinka Oyanedel-Craver
- Department of Civil and Environmental Engineering, University of Rhode Island, Kingston, Rhode Island
| | - Dhimiter Bello
- Department of Environmental Health, Center for Nanotechnology and Nanotoxicology, T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
| | - Vincent Castranova
- Department of Pharmaceutical Sciences/School of Pharmacy, West Virginia University, Morgantown, West Virginia
| | - Yong Qian
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia
| | - Treye Thomas
- U.S. Consumer Product Safety Commission, Office of Hazard Identification and Reduction, Rockville, Maryland
| | - Ilias G Kavouras
- Department of Environmental Health Sciences, University of Alabama at Birmingham, Birmingham, Alabama
| | - Philip Demokritou
- Department of Environmental Health, Center for Nanotechnology and Nanotoxicology, T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
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23
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Mercer RR, Scabilloni JF, Wang L, Battelli LA, Antonini JM, Roberts JR, Qian Y, Sisler JD, Castranova V, Porter DW, Hubbs AF. The Fate of Inhaled Nanoparticles: Detection and Measurement by Enhanced Dark-field Microscopy. Toxicol Pathol 2017; 46:28-46. [PMID: 28929951 DOI: 10.1177/0192623317732321] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Assessing the potential health risks for newly developed nanoparticles poses a significant challenge. Nanometer-sized particles are not generally detectable with the light microscope. Electron microscopy typically requires high-level doses, above the physiologic range, for particle examination in tissues. Enhanced dark-field microscopy (EDM) is an adaption of the light microscope that images scattered light. Nanoparticles scatter light with high efficiency while normal tissues do not. EDM has the potential to identify the critical target sites for nanoparticle deposition and injury in the lungs and other organs. This study describes the methods for EDM imaging of nanoparticles and applications. Examples of EDM application include measurement of deposition and clearance patterns. Imaging of a wide variety of nanoparticles demonstrated frequent situations where nanoparticles detected by EDM were not visible by light microscopy. EDM examination of colloidal gold nanospheres (10-100 nm diameter) demonstrated a detection size limit of approximately 15 nm in tissue sections. EDM determined nanoparticle volume density was directly proportional to total lung burden of exposed animals. The results confirm that EDM can determine nanoparticle distribution, clearance, transport to lymph nodes, and accumulation in extrapulmonary organs. Thus, EDM substantially improves the qualitative and quantitative microscopic evaluation of inhaled nanoparticles.
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Affiliation(s)
- Robert R Mercer
- 1 Pathology and Physiology Research Branch, HELD, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA.,2 Department of Physiology and Pharmacology, West Virginia University, Morgantown, West Virginia, USA
| | - James F Scabilloni
- 1 Pathology and Physiology Research Branch, HELD, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA
| | - Liying Wang
- 3 Allergy and Clinical Immunology Branch, HELD, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA.,4 Department of Pharmaceutical Science, West Virginia University, Morgantown, West Virginia, USA
| | - Lori A Battelli
- 1 Pathology and Physiology Research Branch, HELD, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA
| | - James M Antonini
- 3 Allergy and Clinical Immunology Branch, HELD, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA.,4 Department of Pharmaceutical Science, West Virginia University, Morgantown, West Virginia, USA
| | - Jenny R Roberts
- 3 Allergy and Clinical Immunology Branch, HELD, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA.,4 Department of Pharmaceutical Science, West Virginia University, Morgantown, West Virginia, USA
| | - Yong Qian
- 3 Allergy and Clinical Immunology Branch, HELD, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA.,4 Department of Pharmaceutical Science, West Virginia University, Morgantown, West Virginia, USA
| | - Jennifer D Sisler
- 1 Pathology and Physiology Research Branch, HELD, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA
| | - Vincent Castranova
- 4 Department of Pharmaceutical Science, West Virginia University, Morgantown, West Virginia, USA
| | - Dale W Porter
- 1 Pathology and Physiology Research Branch, HELD, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA.,2 Department of Physiology and Pharmacology, West Virginia University, Morgantown, West Virginia, USA
| | - Ann F Hubbs
- 1 Pathology and Physiology Research Branch, HELD, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA
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24
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Pourhoseini S, Naghizadeh N. An experimental study on optimum concentration of silver-water microfluid for enhancing heat transfer performance of a plate heat exchanger. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Korotkov SM, Sobol KV, Shemarova IV, Furaev VV, Shumakov AR, Nesterov VP. A comparative study of the effects of Pr3+ and La3+ ions on calcium dependent processes in frog cardiac muscle and rat heart mitochondria. Biophysics (Nagoya-shi) 2016. [DOI: 10.1134/s0006350916050122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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26
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Sisler JD, Li R, McKinney W, Mercer RR, Ji Z, Xia T, Wang X, Shaffer J, Orandle M, Mihalchik AL, Battelli L, Chen BT, Wolfarth M, Andrew ME, Schwegler-Berry D, Porter DW, Castranova V, Nel A, Qian Y. Differential pulmonary effects of CoO and La2O3 metal oxide nanoparticle responses during aerosolized inhalation in mice. Part Fibre Toxicol 2016; 13:42. [PMID: 27527840 PMCID: PMC4986387 DOI: 10.1186/s12989-016-0155-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Accepted: 08/05/2016] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Although classified as metal oxides, cobalt monoxide (CoO) and lanthanum oxide (La2O3) nanoparticles, as representative transition and rare earth oxides, exhibit distinct material properties that may result in different hazardous potential in the lung. The current study was undertaken to compare the pulmonary effects of aerosolized whole body inhalation of these nanoparticles in mice. RESULTS Mice were exposed to filtered air (control) and 10 or 30 mg/m(3) of each particle type for 4 days and then examined at 1 h, 1, 7 and 56 days post-exposure. The whole lung burden 1 h after the 4 day inhalation of CoO nanoparticles was 25 % of that for La2O3 nanoparticles. At 56 days post exposure, < 1 % of CoO nanoparticles remained in the lungs; however, 22-50 % of the La2O3 nanoparticles lung burden 1 h post exposure was retained at 56 days post exposure for low and high exposures. Significant accumulation of La2O3 nanoparticles in the tracheobronchial lymph nodes was noted at 56 days post exposure. When exposed to phagolysosomal simulated fluid, La nanoparticles formed urchin-shaped LaPO4 structures, suggesting that retention of this rare earth oxide nanoparticle may be due to complexation of cellular phosphates within lysosomes. CoO nanoparticles caused greater lactate dehydrogenase release in the bronchoalveolar fluid (BALF) compared to La2O3 nanoparticles at 1 day post exposure, while BAL cell differentials indicate that La2O3 nanoparticles generated more inflammatory cell infiltration at all doses and exposure points. Histopathological analysis showed acute inflammatory changes at 1 day after inhalation of either CoO or La2O3 nanoparticles. Only the 30 mg/m(3) La2O3 nanoparticles exposure caused chronic inflammatory changes and minimal fibrosis at day 56 post exposure. This is in agreement with activation of the NRLP3 inflammasome after in vitro exposure of differentiated THP-1 macrophages to La2O3 but not after CoO nanoparticles exposure. CONCLUSION Taken together, the inhalation studies confirmed the trend of our previous sub-acute aspiration study, which reported that CoO nanoparticles induced more acute pulmonary toxicity, while La2O3 nanoparticles caused chronic inflammatory changes and minimal fibrosis.
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Affiliation(s)
- Jennifer D Sisler
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA
| | - Ruibin Li
- Division of NanoMedicine, Department of Medicine, University of California, 10833 Le Conte Ave, Los Angeles, CA, 90095, USA.,Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, CA, 90095, USA.,School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China
| | - Walter McKinney
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA
| | - Robert R Mercer
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA
| | - Zhaoxia Ji
- California NanoSystems Institute, University of California, 570 Westwood Plaza, Los Angeles, CA, 90095, USA
| | - Tian Xia
- Division of NanoMedicine, Department of Medicine, University of California, 10833 Le Conte Ave, Los Angeles, CA, 90095, USA.,Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, CA, 90095, USA.,California NanoSystems Institute, University of California, 570 Westwood Plaza, Los Angeles, CA, 90095, USA
| | - Xiang Wang
- California NanoSystems Institute, University of California, 570 Westwood Plaza, Los Angeles, CA, 90095, USA
| | - Justine Shaffer
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA
| | - Marlene Orandle
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA
| | - Amy L Mihalchik
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA
| | - Lori Battelli
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA
| | - Bean T Chen
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA
| | - Michael Wolfarth
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA
| | - Michael E Andrew
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA
| | - Diane Schwegler-Berry
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA
| | - Dale W Porter
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA
| | - Vincent Castranova
- Department of Pharmaceutical Sciences, West Virginia University, Morgantown, WV, 26506, USA
| | - Andre Nel
- Division of NanoMedicine, Department of Medicine, University of California, 10833 Le Conte Ave, Los Angeles, CA, 90095, USA.,Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, CA, 90095, USA.,California NanoSystems Institute, University of California, 570 Westwood Plaza, Los Angeles, CA, 90095, USA
| | - Yong Qian
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA.
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