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Qamar W, Gulia S, Athar M, Ahmad R, Imam MT, Chandra P, Singh BP, Haque R, Hassan MI, Rahman S. An insight into impact of nanomaterials toxicity on human health. PeerJ 2024; 12:e17807. [PMID: 39364370 PMCID: PMC11448750 DOI: 10.7717/peerj.17807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 07/03/2024] [Indexed: 10/05/2024] Open
Abstract
In recent years, advances in nanotechnology have significantly influenced electronics manufacturing, industrial processes, and medical research. Various industries have seen a surge in the use of nanomaterials. However, several researchers have raised the alarm about the toxicological nature of nanomaterials, which appear to be quite different from their crude forms. This altered nature can be attributed to their unique physicochemical profile. They can adversely affect human health and the environment. Nanomaterials that have been released into the environment tend to accumulate over time and can cause a significant impact on the ecosystem and organisms with adverse health effects. Increased use of nanoparticles has led to increased human exposure in their daily lives, making them more vulnerable to nanoparticle toxicity. Because of their small size, nanomaterials can readily cross biological membranes and enter cells, tissues, and organs. Therefore, the effect of nanomaterials on the human environment is of particular concern. The toxicological effects of nanomaterials and their mechanisms of action are being researched worldwide. Technological advances also support monitoring new nanomaterials marketed for industrial and household purposes. It is a challenging area because of the exceptional physicochemical properties of nanomaterials. This updated review focuses on the diverse toxicological perspective of nanomaterials. We have discussed the use of different types of nanoparticles and their physiochemical properties responsible for toxicity, routes of exposure, bio-distribution, and mechanism of toxicity. The review also includes various in vivo and in vitro methods of assessing the toxicity of nanomaterials. Finally, this review will provide a detailed insight into nano material-induced toxicological response, which can be beneficial in designing safe and effective nanoparticles.
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Affiliation(s)
- Wajhul Qamar
- Department of Pharmacology and Toxicology and Central Laboratory, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Shweta Gulia
- Department of Biotechnology, Delhi Technological University, New Delhi, India
| | - Mohammad Athar
- Department of Medical Genetics, Umm Al-Qura University, Makkah, Saudi Arabia
- Science and Technology Unit, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Razi Ahmad
- Department of Chemistry, Indian Institute of Technology, Delhi, New Delhi, India
| | - Mohammad Tarique Imam
- Department of Clinical Pharmacy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj, Saudi Arabia
| | - Prakash Chandra
- Department of Biotechnology, Delhi Technological University, New Delhi, India
| | - Bhupendra Pratap Singh
- Department of Environmental Studies, Deshbandhu College, University of Delhi, New Delhi, India
| | - Rizwanul Haque
- Department of Biotechnology, Central University of South Bihar, Gaya, Bihar, India
| | - Md Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia University, New Delhi, India
| | - Shakilur Rahman
- Department of Medical Elementology and Toxicology, Jamia Hamdard University, New Delhi, India
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2
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Soliman MG, Martinez-Serra A, Antonello G, Dobricic M, Wilkins T, Serchi T, Fenoglio I, Monopoli MP. Understanding the role of biomolecular coronas in human exposure to nanomaterials. ENVIRONMENTAL SCIENCE. NANO 2024:d4en00488d. [PMID: 39263008 PMCID: PMC11382216 DOI: 10.1039/d4en00488d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Accepted: 08/17/2024] [Indexed: 09/13/2024]
Abstract
Nanomaterials (NMs) are increasingly used in medical treatments, electronics, and food additives. However, nanosafety-the possible adverse effects of NMs on human health-is an area of active research. This review provides an overview of the influence of biomolecular coronas on NM transformation following various exposure routes. We discuss potential exposure pathways, including inhalation and ingestion, describing the physiology of exposure routes and emphasising the relevance of coronas in these environments. Additionally, we review other routes to NM exposure, such as synovial fluid, blood (translocation and injection), dermal and ocular exposure, as well as the dose and medium impact on NM interactions. We emphasize the need for an in-depth characterisation of coronas in different biological media, highlighting the need and opportunity to study lung and gastric fluids to understand NM behaviour and potential toxicity. Future research aims to predict better in vivo outcomes and address the complexities of NM interactions with biological systems.
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Affiliation(s)
- Mahmoud G Soliman
- Chemistry Department, RCSI (Royal College of Surgeons in Ireland) 123 St Stephen Green Dublin 2 Ireland
- Physics Department, Faculty of Science, Al-Azhar University Cairo Egypt
| | - Alberto Martinez-Serra
- Chemistry Department, RCSI (Royal College of Surgeons in Ireland) 123 St Stephen Green Dublin 2 Ireland
| | - Giulia Antonello
- Department of Chemistry, University of Torino 10125 Torino Italy
| | - Marko Dobricic
- Chemistry Department, RCSI (Royal College of Surgeons in Ireland) 123 St Stephen Green Dublin 2 Ireland
| | - Terence Wilkins
- School of Chemical & Process Innovation, University of Leeds Engineering Building Leeds LS2 9JT UK
| | - Tommaso Serchi
- Environmental Research and Innovation Department (Luxembourg Institute of Science and Technology) 41, Rue du Brill L4422 Belvaux GD Luxembourg
| | - Ivana Fenoglio
- Department of Chemistry, University of Torino 10125 Torino Italy
| | - Marco P Monopoli
- Chemistry Department, RCSI (Royal College of Surgeons in Ireland) 123 St Stephen Green Dublin 2 Ireland
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3
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Baranowska-Wójcik E, Welc-Stanowska R, Wiącek D, Nawrocka A, Szwajgier D. The interactions of pectin with TiO 2 nanoparticles measured by FT-IR are confirmed in a model of the gastrointestinal tract. Food Res Int 2024; 189:114509. [PMID: 38876586 DOI: 10.1016/j.foodres.2024.114509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 05/02/2024] [Accepted: 05/07/2024] [Indexed: 06/16/2024]
Abstract
The presence of nanoparticle fractions (<100 nm, NPs) in the food additive TiO2 (E171) rises concerns about its potential harmful impact on human health. The knowledge about the interaction of TiO2 NPs with food components is limited to proteins or polyphenols. The present paper is the first to report on interactions between TiO2 NPs and high molecular pectins that form gels in boluses and are remain nearly intact during digestion until they reach the colon. Direct interactions were studied using Fourier Transform Infrared Spectroscopy while indirect ones were monitored by measuring the "absorption" of TiO2 using a 0.2 microfiltration membrane, during in vitro digestion in a model of the gastro-intestinal tract. The FT-IR spectra registered for pectin-TiO2 NPs solutions confirmed changes in band intensities at 1020, 1100, 1610, and 1740 cm-1, suggesting interactions taking place mainly via the COO- groups. Furthermore, the I(1020)/I(1100) ratio was decreased (C-O stretching vibrations), suggesting partial blocking of the skeletal vibrations caused by interactions between pectin and TiO2. The modelled in vitro digestions confirmed that the "availability" of Ti was reduced when TiO2 NPs were combined with pectin, as compared to TiO2 NPs "digested" alone.
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Affiliation(s)
- Ewa Baranowska-Wójcik
- Department of Biotechnology, Microbiology and Human Nutrition, University of Life Sciences, Skromna Street 8, 20-704 Lublin, Poland.
| | - Renata Welc-Stanowska
- Institute of Agrophysics, Polish Academy of Sciences, Doswiadczalna 4, 20-290 Lublin, Poland.
| | - Dariusz Wiącek
- Institute of Agrophysics, Polish Academy of Sciences, Doswiadczalna 4, 20-290 Lublin, Poland.
| | - Agnieszka Nawrocka
- Institute of Agrophysics, Polish Academy of Sciences, Doswiadczalna 4, 20-290 Lublin, Poland.
| | - Dominik Szwajgier
- Department of Biotechnology, Microbiology and Human Nutrition, University of Life Sciences, Skromna Street 8, 20-704 Lublin, Poland.
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4
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Lim SH, Wong TW, Tay WX. Overcoming colloidal nanoparticle aggregation in biological milieu for cancer therapeutic delivery: Perspectives of materials and particle design. Adv Colloid Interface Sci 2024; 325:103094. [PMID: 38359673 DOI: 10.1016/j.cis.2024.103094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 01/15/2024] [Accepted: 01/21/2024] [Indexed: 02/17/2024]
Abstract
Nanoparticles as cancer therapeutic carrier fail in clinical translation due to complex biological environments in vivo consisting of electrolytes and proteins which render nanoparticle aggregation and unable to reach action site. This review identifies the desirable characteristics of nanoparticles and their constituent materials that prevent aggregation from site of administration (oral, lung, injection) to target site. Oral nanoparticles should ideally be 75-100 nm whereas the size of pulmonary nanoparticles minimally affects their aggregation. Nanoparticles generally should carry excess negative surface charges particularly in fasting state and exert steric hindrance through surface decoration with citrate, anionic surfactants and large polymeric chains (polyethylene glycol and polyvinylpyrrolidone) to prevent aggregation. Anionic as well as cationic nanoparticles are both predisposed to protein corona formation as a function of biological protein isoelectric points. Their nanoparticulate surface composition as such should confer hydrophilicity or steric hindrance to evade protein corona formation or its formation should translate into steric hindrance or surface negative charges to prevent further aggregation. Unexpectedly, smaller and cationic nanoparticles are less prone to aggregation at cancer cell interface favoring endocytosis whereas aggregation is essential to enable nanoparticles retention and subsequent cancer cell uptake in tumor microenvironment. Present studies are largely conducted in vitro with simplified simulated biological media. Future aggregation assessment of nanoparticles in biological fluids that mimic that of patients is imperative to address conflicting materials and designs required as a function of body sites in order to realize the future clinical benefits.
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Affiliation(s)
- Shi Huan Lim
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Republic of Singapore 117543
| | - Tin Wui Wong
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Republic of Singapore 117543; Non-Destructive Biomedical and Pharmaceutical Research Centre, Smart Manufacturing Research institute, Universiti Teknologi MARA Selangor, Puncak Alam 42300, Selangor, Malaysia; Particle Design Research Group, Faculty of Pharmacy, Universiti Teknologi MARA Selangor, Puncak Alam 42300, Selangor, Malaysia; UM-UiTM Excipient Development Research Unit (EXDEU), Faculty of Pharmacy, Universiti Malaya, Lembah Pantai 50603, Kuala Lumpur, Malaysia.
| | - Wei Xian Tay
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Republic of Singapore 117543
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Han D, Chen R, Kan H, Xu Y. The bio-distribution, clearance pathways, and toxicity mechanisms of ambient ultrafine particles. ECO-ENVIRONMENT & HEALTH (ONLINE) 2023; 2:95-106. [PMID: 38074989 PMCID: PMC10702920 DOI: 10.1016/j.eehl.2023.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 06/02/2023] [Accepted: 06/09/2023] [Indexed: 02/17/2024]
Abstract
Ambient particles severely threaten human health worldwide. Compared to larger particles, ultrafine particles (UFPs) are highly concentrated in ambient environments, have a larger specific surface area, and are retained for a longer time in the lung. Recent studies have found that they can be transported into various extra-pulmonary organs by crossing the air-blood barrier (ABB). Therefore, to understand the adverse effects of UFPs, it is crucial to thoroughly investigate their bio-distribution and clearance pathways in vivo after inhalation, as well as their toxicological mechanisms. This review highlights emerging evidence on the bio-distribution of UFPs in pulmonary and extra-pulmonary organs. It explores how UFPs penetrate the ABB, the blood-brain barrier (BBB), and the placental barrier (PB) and subsequently undergo clearance by the liver, kidney, or intestine. In addition, the potential underlying toxicological mechanisms of UFPs are summarized, providing fundamental insights into how UFPs induce adverse health effects.
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Affiliation(s)
- Dongyang Han
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai 200032, China
| | - Renjie Chen
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai 200032, China
| | - Haidong Kan
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai 200032, China
| | - Yanyi Xu
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai 200032, China
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6
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Yousof S, Erfan H, Shehata S, Hosny M, El-Sayed K. Assessment of the potential cerebellar toxicity of gold nanoparticles on the structure and function of adult male albino rats. Biosci Rep 2023; 43:BSR20222255. [PMID: 37527500 PMCID: PMC10472208 DOI: 10.1042/bsr20222255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 07/13/2023] [Accepted: 07/21/2023] [Indexed: 08/03/2023] Open
Abstract
BACKGROUND The regular use of gold nanoparticles (Au-NPs) may increase the likelihood of human exposure to these nanoparticles (NPs) and raises concerns about toxicity. AIM This study investigated the short-term impact of exposure to Au-NPs on inducing cerebellar pathology in rats, and whether the dose or duration of exposure was more important. METHODOLOGY The study used two concentrations of Au-NPs (25 and 50 particles per million) and 18 rats were randomly assigned to three groups. Assessments of the animals were done via behavioral, gene expression, histological, and immunohistochemistry analyses. RESULTS Both concentrations of Au-NPs caused cerebellar pathology, as assessed through the investigation test battery. The Au-NPs50 group displayed more injury and decreased mobility compared with the control and the Au-NPs25 group. The Au-NPs25 group showed an increase in supported rearing and significant up-regulation of the Rgc32 gene compared with the control. The Trkb gene was insignificantly up-regulated in both Au-NPs groups compared with the control. CONCLUSION The study indicates that exposure to Au-NPs can cause cerebellar pathology in rats and that the toxicity is more dependent on dose than the duration of exposure. These findings have significant implications for the safe use of Au-NPs in various applications.
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Affiliation(s)
- Shimaa Mohammad Yousof
- Department of Medical Physiology, Faculty of Medicine in Rabigh, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Department of Medical Physiology, Faculty of Medicine, Suez Canal University, Ismailia 41522, Egypt
| | - Horeya Erfan
- Department of Histology and Cell Biology, Faculty of Medicine, Suez Canal University, Ismailia 41522, Egypt
| | - Shaimaa A. Shehata
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Suez Canal University, Ismailia 41522, Egypt
| | - Marwa M. Hosny
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
- Oncology Diagnostic Unit Lab, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Karima El-Sayed
- Department of Medical Physiology, Faculty of Medicine in Rabigh, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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7
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Ferraris F, Raggi A, Ponti J, Mehn D, Gilliland D, Savini S, Iacoponi F, Aureli F, Calzolai L, Cubadda F. Agglomeration Behavior and Fate of Food-Grade Titanium Dioxide in Human Gastrointestinal Digestion and in the Lysosomal Environment. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1908. [PMID: 37446425 DOI: 10.3390/nano13131908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/13/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023]
Abstract
In the present study, we addressed the knowledge gaps regarding the agglomeration behavior and fate of food-grade titanium dioxide (E 171) in human gastrointestinal digestion (GID). After thorough multi-technique physicochemical characterization including TEM, single-particle ICP-MS (spICP-MS), CLS, VSSA determination and ELS, the GI fate of E 171 was studied by applying the in vitro GID approach established for the regulatory risk assessment of nanomaterials in Europe, using a standardized international protocol. GI fate was investigated in fasted conditions, relevant to E 171 use in food supplements and medicines, and in fed conditions, with both a model food and E 171-containing food samples. TiO2 constituent particles were resistant to GI dissolution, and thus, their stability in lysosomal fluid was investigated. The biopersistence of the material in lysosomal fluid highlighted its potential for bioaccumulation. For characterizing the agglomeration degree in the small intestinal phase, spICP-MS represented an ideal analytical tool to overcome the limitations of earlier studies. We demonstrated that, after simulated GID, in the small intestine, E 171 (at concentrations reflecting human exposure) is present with a dispersion degree similar to that obtained when dispersing the material in water by means of high-energy sonication (i.e., ≥70% of particles <250 nm).
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Affiliation(s)
- Francesca Ferraris
- Istituto Superiore di Sanità-National Institute of Health, 00161 Rome, Italy
| | - Andrea Raggi
- Istituto Superiore di Sanità-National Institute of Health, 00161 Rome, Italy
| | - Jessica Ponti
- European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy
| | - Dora Mehn
- European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy
| | - Douglas Gilliland
- European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy
| | - Sara Savini
- Istituto Superiore di Sanità-National Institute of Health, 00161 Rome, Italy
| | - Francesca Iacoponi
- Istituto Superiore di Sanità-National Institute of Health, 00161 Rome, Italy
| | - Federica Aureli
- Istituto Superiore di Sanità-National Institute of Health, 00161 Rome, Italy
| | - Luigi Calzolai
- European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy
| | - Francesco Cubadda
- Istituto Superiore di Sanità-National Institute of Health, 00161 Rome, Italy
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8
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El Moussaoui Y, Terrisse H, Quillard S, Ropers MH, Humbert B. The True Nature of Tricalcium Phosphate Used as Food Additive (E341(iii)). NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1823. [PMID: 37368253 DOI: 10.3390/nano13121823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/01/2023] [Accepted: 06/04/2023] [Indexed: 06/28/2023]
Abstract
Tricalcium phosphate (TCP) is a food additive, labeled E341(iii), used in powdered food preparation, such as baby formula. In the United States, calcium phosphate nano-objects were identified in baby formula extractions. Our goal is to determine whether the TCP food additive, as is used in Europe, can be classified as a nanomaterial. The physicochemical properties of TCP were characterized. Three different samples (from a chemical company and two manufacturers) were thoroughly characterized according to the recommendations of the European Food Safety Authority. A commercial TCP food additive was identified as actually being hydroxyapatite (HA). It presents itself in the form of particles of different shapes (either needle-like, rod, or pseudo-spherical), which were demonstrated in this paper to be of a nanometric dimension: E341(iii) is thus a nanomaterial. In water, HA particles sediment rapidly as agglomerates or aggregates over a pH of 6 and are progressively dissolved in acidic media (pH < 5) until the complete dissolution at a pH of 2. Consequently, since TCP may be considered as a nanomaterial on the European market, it raises the question of its potential persistency in the gastrointestinal tract.
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Affiliation(s)
- Youssef El Moussaoui
- Nantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMN, F-44000 Nantes, France
- INRAE, UR1268 Biopolymères Interactions Assemblages, F-44316 Nantes, France
| | - Hélène Terrisse
- Nantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMN, F-44000 Nantes, France
| | - Sophie Quillard
- Nantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMN, F-44000 Nantes, France
| | | | - Bernard Humbert
- Nantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMN, F-44000 Nantes, France
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9
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Qi M, Wang X, Chen J, Liu Y, Liu Y, Jia J, Li L, Yue T, Gao L, Yan B, Zhao B, Xu M. Transformation, Absorption and Toxicological Mechanisms of Silver Nanoparticles in the Gastrointestinal Tract Following Oral Exposure. ACS NANO 2023; 17:8851-8865. [PMID: 37145866 DOI: 10.1021/acsnano.3c00024] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Oral exposure is known as the primary way for silver nanoparticles (AgNPs), which are commonly used as food additives or antibacterial agents in commercial products, to enter the human body. Although the health risk of AgNPs has been a concern and extensively researched over the past few decades, there are still numerous knowledge gaps that need to be filled to disclose what AgNPs experience in the gastrointestinal tract (GIT) and how they cause oral toxicity. In order to gain more insight into the fate of AgNPs in the GIT, the main gastrointestinal transformation of AgNPs, including aggregation/disaggregation, oxidative dissolution, chlorination, sulfuration, and corona formation, is first described. Second, the intestinal absorption of AgNPs is presented to show how AgNPs interact with epithelial cells and cross the intestinal barrier. Then, more importantly, we make an overview of the mechanisms underlying the oral toxicity of AgNPs in light of recent advances as well as the factors affecting the nano-bio interactions in the GIT, which have rarely been thoroughly elaborated in published literature. At last, we emphatically discuss the issues that need to be addressed in the future to answer the question "How does oral exposure to AgNPs cause detrimental effects on the human body?".
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Affiliation(s)
- Mengying Qi
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xudong Wang
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiahao Chen
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yin Liu
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yun Liu
- Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Science, Hefei 230031, China
| | - Jianbo Jia
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Lingxiangyu Li
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tongtao Yue
- Institute of Coastal Environmental Pollution Control, Ministry of Education Key Laboratory of Marine Environment and Ecology, Ocean University of China, Qingdao 266100, China
| | - Lirong Gao
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bing Yan
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Bin Zhao
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ming Xu
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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10
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Abstract
Nanoparticles (NPs) have been widely used in different areas, including consumer products and medicine. In terms of biomedical applications, NPs or NP-based drug formulations have been extensively investigated for cancer diagnostics and therapy in preclinical studies, but the clinical translation rate is low. Therefore, a thorough and comprehensive understanding of the pharmacokinetics of NPs, especially in drug delivery efficiency to the target therapeutic tissue tumor, is important to design more effective nanomedicines and for proper assessment of the safety and risk of NPs. This review article focuses on the pharmacokinetics of both organic and inorganic NPs and their tumor delivery efficiencies, as well as the associated mechanisms involved. We discuss the absorption, distribution, metabolism, and excretion (ADME) processes following different routes of exposure and the mechanisms involved. Many physicochemical properties and experimental factors, including particle type, size, surface charge, zeta potential, surface coating, protein binding, dose, exposure route, species, cancer type, and tumor size can affect NP pharmacokinetics and tumor delivery efficiency. NPs can be absorbed with varying degrees following different exposure routes and mainly accumulate in liver and spleen, but also distribute to other tissues such as heart, lung, kidney and tumor tissues; and subsequently get metabolized and/or excreted mainly through hepatobiliary and renal elimination. Passive and active targeting strategies are the two major mechanisms of tumor delivery, while active targeting tends to have less toxicity and higher delivery efficiency through direct interaction between ligands and receptors. We also discuss challenges and perspectives remaining in the field of pharmacokinetics and tumor delivery efficiency of NPs.
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Affiliation(s)
- Long Yuan
- Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, FL 32610, USA
- Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL 32608, USA
| | - Qiran Chen
- Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, FL 32610, USA
- Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL 32608, USA
| | - Jim E. Riviere
- 1Data Consortium, Kansas State University, Olathe, KS 66061, USA
| | - Zhoumeng Lin
- Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, FL 32610, USA
- Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL 32608, USA
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11
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Arzi RS, Davidovich-Pinhas M, Cohen N, Sosnik A. An experimental and theoretical approach to understand the interaction between particles and mucosal tissues. Acta Biomater 2023; 158:449-462. [PMID: 36596435 DOI: 10.1016/j.actbio.2022.12.060] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 11/24/2022] [Accepted: 12/26/2022] [Indexed: 01/01/2023]
Abstract
Nanonization of poorly water-soluble drugs has shown great potential in improving their oral bioavailability by increasing drug dissolution rate and adhesion to the gastrointestinal mucus. However, the fundamental features that govern the particle-mucus interactions have not been investigated in a systematic way before. In this work, we synthesize mucin hydrogels that mimic those of freshly excised porcine mucin. By using fluorescent pure curcumin particles, we characterize the effect of particle size (200 nm, and 1.2 and 1.3 μm), concentration (18, 35, and 71 μg mL-1), and hydrogel crosslinking density on the diffusion-driven particle penetration in vitro. Next, we derive a phenomenological model that describes the physics behind the diffusion-derived penetration and considers the contributions of the key parameters assessed in vitro. Finally, we challenge our model by assessing the oral pharmacokinetics of an anti-cancer model drug, namely dasatinib, in pristine and nanonized forms and two clinically relevant doses in rats. For a dose of 10 mg kg-1, drug nanonization leads to a significant ∼8- and ∼21-fold increase of the drug oral bioavailability and half-life, respectively, with respect to the unprocessed drug. When the dose of the nanoparticles was increased to 15 mg kg-1, the oral bioavailability increased though not significantly, suggesting the saturation of the mucus penetration sites, as demonstrated by the in vitro model. Our overall results reveal the potential of this approach to pave the way for the development of tools that enable a more rational design of nano-drug delivery systems for mucosal administration. STATEMENT OF SIGNIFICANCE: The development of experimental-theoretical tools to understand and predict the diffusion-driven penetration of particles into mucus is crucial not only to rationalize the design of nanomedicines for mucosal administration but also to anticipate the risks of the exposure of the body to nano-pollutants. However, a systematic study of such tools is still lacking. Here we introduce an experimental-theoretical approach to predict the diffusion-driven penetration of particles into mucus and investigate the effect of three key parameters on this interaction. Then, we challenge the model in a preliminary oral pharmacokinetics study in rats which shows a very good correlation with in vitro results. Overall, this work represents a robust platform for the modelling of the interaction of particles with mucosae under dynamic conditions.
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Affiliation(s)
- Roni Sverdlov Arzi
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Maya Davidovich-Pinhas
- Department of Biotechnology and Food Engineering, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Noy Cohen
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa 3200003, Israel.
| | - Alejandro Sosnik
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa 3200003, Israel.
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12
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El-Ganainy SM, Mosa MA, Ismail AM, Khalil AE. Lignin-Loaded Carbon Nanoparticles as a Promising Control Agent against Fusarium verticillioides in Maize: Physiological and Biochemical Analyses. Polymers (Basel) 2023; 15:polym15051193. [PMID: 36904433 PMCID: PMC10007435 DOI: 10.3390/polym15051193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/21/2023] [Accepted: 02/23/2023] [Indexed: 03/02/2023] Open
Abstract
Lignin, a naturally occurring biopolymer, is produced primarily as a waste product by the pulp and paper industries and burned to produce electricity. Lignin-based nano- and microcarriers found in plants are promising biodegradable drug delivery platforms. Here, we highlight a few characteristics of a potential antifungal nanocomposite consisting of carbon nanoparticles (C-NPs) with a defined size and shape containing lignin nanoparticles (L-NPs). Spectroscopic and microscopic studies verified that the lignin-loaded carbon nanoparticles (L-CNPs) were successfully prepared. Under in vitro and in vivo conditions, the antifungal activity of L-CNPs at various doses was effectively tested against a wild strain of F. verticillioides that causes maize stalk rot disease. In comparison to the commercial fungicide, Ridomil Gold SL (2%), L-CNPs introduced beneficial effects in the earliest stages of maize development (seed germination and radicle length). Additionally, L-CNP treatments promoted positive effects on maize seedlings, with a significant increment in the level of carotenoid, anthocyanin, and chlorophyll pigments for particular treatments. Finally, the soluble protein content displayed a favorable trend in response to particular dosages. Most importantly, treatments with L-CNPs at 100 and 500 mg/L significantly reduced stalk rot disease by 86% and 81%, respectively, compared to treatments with the chemical fungicide, which reduced the disease by 79%. These consequences are substantial considering the essential cellular function carried out by these special natural-based compounds. Finally, the intravenous L-CNPs treatments in both male and female mice that affected the clinical applications and toxicological assessments are explained. The results of this study suggest that L-CNPs are of high interest as biodegradable delivery vehicles and can be used to stimulate favorable biological responses in maize when administered in the recommended dosages, contributing to the idea of agro-nanotechnology by demonstrating their unique qualities as a cost-effective alternative compared to conventional commercial fungicides and environmentally benign nanopesticides for long-term plant protection.
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Affiliation(s)
- Sherif Mohamed El-Ganainy
- Department of Arid Land Agriculture, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Pests and Plant Diseases Unit, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Vegetable Diseases Research Department, Plant Pathology Research Institute, Agricultural Research Center (ARC), Giza 12619, Egypt
- Correspondence: (S.M.E.-G.); (M.A.M.)
| | - Mohamed A. Mosa
- Nanotechnology & Advanced Nano-Materials Laboratory (NANML), Plant Pathology Research Institute, Agricultural Research Center, Giza 12619, Egypt
- Correspondence: (S.M.E.-G.); (M.A.M.)
| | - Ahmed Mahmoud Ismail
- Department of Arid Land Agriculture, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Pests and Plant Diseases Unit, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Vegetable Diseases Research Department, Plant Pathology Research Institute, Agricultural Research Center (ARC), Giza 12619, Egypt
| | - Ashraf E. Khalil
- Nematology Research Department, Plant Pathology Research Institute, Agricultural Research Center, Giza 12619, Egypt
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13
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Regulatory safety assessment of nanoparticles for the food chain in Europe. Trends Food Sci Technol 2023. [DOI: 10.1016/j.tifs.2023.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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14
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Stalder T, Zaiter T, El-Basset W, Cornu R, Martin H, Diab-Assaf M, Béduneau A. Interaction and toxicity of ingested nanoparticles on the intestinal barrier. Toxicology 2022; 481:153353. [DOI: 10.1016/j.tox.2022.153353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/05/2022] [Accepted: 10/13/2022] [Indexed: 11/28/2022]
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15
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Xie L, Li Q, Liao Y, Huang Z, Liu Y, Liu C, Shi L, Li Q, Yuan M. Toxicity Analysis of Mesoporous Polydopamine on Intestinal Tissue and Microflora. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27196461. [PMID: 36234997 PMCID: PMC9571127 DOI: 10.3390/molecules27196461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/22/2022] [Accepted: 09/27/2022] [Indexed: 11/16/2022]
Abstract
As a promising therapy, photothermal therapy (PTT) converts near-infrared (NIR) light into heat through efficient photothermal agents (PTAs), causing a rapid increase in local temperature. Considering the importance of PTAs in the clinical application of PTT, the safety of PTAs should be carefully evaluated before their widespread use. As a promising PTA, mesoporous polydopamine (MPDA) was studied for its clinical applications for tumor photothermal therapy and drug delivery. Given the important role that intestinal microflora plays in health, the impacts of MPDA on the intestine and on intestinal microflora were systematically evaluated in this study. Through biological and animal experiments, it was found that MPDA exhibited excellent biocompatibility, in vitro and in vivo. Moreover, 16S rRNA analysis demonstrated that there was no obvious difference in the composition and classification of intestinal microflora between different drug delivery groups and the control group. The results provided new evidence that MPDA was safe to use in large doses via different drug delivery means, and this lays the foundation for further clinical applications.
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Affiliation(s)
- Luoyijun Xie
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518017, China
| | - Qiyan Li
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518017, China
| | - Yingying Liao
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518017, China
| | - Zihua Huang
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518017, China
| | - Yulin Liu
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518017, China
| | - Chutong Liu
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518017, China
| | - Leilei Shi
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518017, China
| | - Qingjiao Li
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518017, China
| | - Miaomiao Yuan
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518017, China
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16
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Biogenic Selenium Nanoparticles and Their Anticancer Effects Pertaining to Probiotic Bacteria—A Review. Antioxidants (Basel) 2022; 11:antiox11101916. [PMID: 36290639 PMCID: PMC9598137 DOI: 10.3390/antiox11101916] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 11/16/2022] Open
Abstract
Selenium nanoparticles (SeNPs) can be produced by biogenic, physical, and chemical processes. The physical and chemical processes have hazardous effects. However, biogenic synthesis (by microorganisms) is an eco-friendly and economical technique that is non-toxic to human and animal health. The mechanism for biogenic SeNPs from microorganisms is still not well understood. Over the past two decades, extensive research has been conducted on the nutritional and therapeutic applications of biogenic SeNPs. The research revealed that biogenic SeNPs are considered novel competitors in the pharmaceutical and food industries, as they have been shown to be virtually non-toxic when used in medical practice and as dietary supplements and release only trace amounts of Se ions when ingested. Various pathogenic and probiotic/nonpathogenic bacteria are used for the biogenic synthesis of SeNPs. However, in the case of biosynthesis by pathogenic bacteria, extraction and purification techniques are required for further useful applications of these biogenic SeNPs. This review focuses on the applications of SeNPs (derived from probiotic/nonpathogenic organisms) as promising anticancer agents. This review describes that SeNPs derived from probiotic/nonpathogenic organisms are considered safe for human consumption. These biogenic SeNPs reduce oxidative stress in the human body and have also been shown to be effective against breast, prostate, lung, liver, and colon cancers. This review provides helpful information on the safe use of biogenic SeNPs and their economic importance for dietary and therapeutic purposes, especially as anticancer agents.
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17
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Ng YZ, Tan KW, Chung LY, Salim F, Low ML, Ooi IH, Yip FW, Ng CH. Zinc(II)-Schiff base complex functionalized on gold nanospheres: synthesis, characterization, anticancer study and interaction with proteins. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2097869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Yin Zhuang Ng
- Chemistry Department, University of Malaya, Kuala Lumpur, Malaysia
| | - Kong Wai Tan
- Chemistry Department, University of Malaya, Kuala Lumpur, Malaysia
| | - Lip Yong Chung
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Malaya, Kuala Lumpur, Malaysia
| | - Fatimah Salim
- Atta-ur-Rahman Institute for Natural Product Discovery (AuRIns), Universiti Teknologi Mara, Selangor, Malaysia
| | - May Lee Low
- Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University, Kuala Lumpur, Malaysia
| | - Ing Hong Ooi
- Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University, Kuala Lumpur, Malaysia
| | - Foo Win Yip
- Department of Chemistry, Faculty of Science, Universiti Tunku Abdul Rahman, Kampar, Perak, Malaysia
| | - Chew Hee Ng
- Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University, Kuala Lumpur, Malaysia
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18
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Baranowska-Wójcik E, Szwajgier D, Winiarska-Mieczan A. A review of research on the impact of E171/TiO 2 NPs on the digestive tract. J Trace Elem Med Biol 2022; 72:126988. [PMID: 35561571 DOI: 10.1016/j.jtemb.2022.126988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 04/01/2022] [Accepted: 04/25/2022] [Indexed: 12/24/2022]
Abstract
Nanotechnology utilises particles of between 1 and 100 nm in size. In recent years, it has enjoyed widespread application in a variety of areas. However, this has also raised increasing concerns regarding the effects that the use of nanoparticles may have on human health. The nanoparticles of titanium dioxide (TiO2 NPs) are among the most promising nanomaterials and have already found wide use in cosmetics, medicine and, the food industry. A nano-sized (diameter < 100 nm) fraction of TiO2 is present, at a certain percentage, in the E171 ( in the EU) pigment commonly used as an additive in food, whose presence raises particular concerns in terms of its potential negative health impact. The consumption of E171 food additive is increasingly associated with disorders of the intestinal barrier, including intestinal dysbiosis. It may disrupt the normal functions of the gastrointestinal tract (GIT) including: enzymatic digestion of primary nutrients (lipids, proteins, or carbohydrates). The aim of this review is to provide a comprehensive and reliable overview of studies conducted in recent years in terms of the substance's potentially negative impact on human and animal alimentary systems.
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Affiliation(s)
- Ewa Baranowska-Wójcik
- Department of Biotechnology, Microbiology and Human Nutrition, University of Life Sciences in Lublin, Skromna 8, Lublin 20-704, Poland.
| | - Dominik Szwajgier
- Department of Biotechnology, Microbiology and Human Nutrition, University of Life Sciences in Lublin, Skromna 8, Lublin 20-704, Poland
| | - Anna Winiarska-Mieczan
- Institute of Animal Nutrition and Bromatology, Department of Bromatology and Food Physiology, University of Life Sciences in Lublin, Akademicka 13, Lublin 20-950, Poland
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19
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Abdel-Halim KY, Osman SR, Abuzeid MA, El-Danasoury HT, Khozimy AM. Apoptotic and histopathological defects enhanced by titanium dioxide nanoparticles in male mice after short-term exposure. Toxicol Rep 2022; 9:1331-1346. [PMID: 36518392 PMCID: PMC9743451 DOI: 10.1016/j.toxrep.2022.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 06/01/2022] [Accepted: 06/04/2022] [Indexed: 10/18/2022] Open
Abstract
Titanium dioxide nanoparticles (TiO2NPs) are commercially utilized in diverse fields. Therefore, the current study investigated the apoptotic and histopathological defects that were caused in male mice following intraperitoneal (i.p) injection of TiO2NPs for 28 days. Doses: 2.5, 5.0, 10.0 and 20.0 mg/kg body weight were applied (10 mice for each group). Results revealed that, lactate dehydrogenase (LDH) activity was significantly increased in homogenates of liver, spleen, kidney, lung, heart, and muscles of treated animals, respect to their controls. Also, significant alterations in acid and alkaline phosphatase (ACP and ALP) activities were reported. The dose 5.0 mg/kg exhibited a significant decline in cell viability of blood samples (74.9 %) (P 0.05 = 0.0177), followed by 2.5 mg/kg (80.8 %), and finally the 10.0 mg/kg (81.8 %) with respect to control (96.3 %). Additionally, significant increases of expressed proteins of caspases-3 and-7 were noticed in cells of the treated animals. Ultrastructural investigations in sections of liver, kidney, lung and spleen of the treated animals showed significant defects, especially in the nucleus, mitochondria and rough endoplasmic reticulum (RER), compared to normal patterns of the control. Also, significant induction of nanoparticle (NPs)-phagolysosomes was visualized in sections of the treated animals. The present findings might provide evidence for the risk pattern of TiO2NPs in mammals after short-term exposure. So, TiO2NPs-based commercial products have now increased in the markets, and it is prudent to investigate their mammalian toxicology.
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Affiliation(s)
- Khaled Y. Abdel-Halim
- Mammalian & Aquatic Toxicology Department, Central Agricultural Pesticides Laboratory (CAPL), Agricultural Research Center (ARC), 12618 Dokki, Giza, Egypt
| | - Safaa R. Osman
- Mammalian & Aquatic Toxicology Department, Central Agricultural Pesticides Laboratory (CAPL), Agricultural Research Center (ARC), 12618 Dokki, Giza, Egypt
| | - Mohamed A.F. Abuzeid
- Department of Plant Protection, Faculty of Agriculture, Damanhour University, PO Box 59, Damanhour city, El-Behera, Egypt
| | - Heba T.M. El-Danasoury
- Department of Plant Protection, Faculty of Agriculture, Suez Canal University, Ismailia city, Egypt
| | - Alaa M. Khozimy
- Department of Plant Protection, Faculty of Agriculture, Damanhour University, PO Box 59, Damanhour city, El-Behera, Egypt
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20
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Campos D, Goméz-García R, Oliveira D, Madureira AR. Intake of nanoparticles and impact on gut microbiota: in vitro and animal models available for testing. GUT MICROBIOME (CAMBRIDGE, ENGLAND) 2021; 3:e1. [PMID: 39295775 PMCID: PMC11406378 DOI: 10.1017/gmb.2021.5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 10/11/2021] [Accepted: 11/09/2021] [Indexed: 09/21/2024]
Abstract
The oral delivery of compounds associated with diet or medication have an impact on the gut microbiota balance, which in turn, influences the physiologic process. Several reports have shown significant advances in clarifying the impact, interactions and outcomes of oral intake of nanoparticles and the human gut. These interactions may affect the bioavailability of the delivered compounds. In addition, there is a considerable breakthrough in the development of antimicrobial nanoparticles for intestinal pathogenic bacteria. Several in vitro fermentation and in vivo models have been developed throughout the years and were used to test these systems. The methodologies and studies carried out so far on the modulation of human and animal gut microbiome by oral delivery nanosized materials were reviewed. Overall, the available in vitro studies mimic the real physiological events enabling to select the best production conditions of nanoparticulate systems in a preliminary stage of research. On the other hand, animal studies can be used to access the dosage effect, safety and correlation between haematological, biochemical and symptoms, with gut microbiota groups and metabolites.
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Affiliation(s)
- Débora Campos
- CBQF-Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
| | - Ricardo Goméz-García
- CBQF-Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
| | - Diana Oliveira
- Amyris Bio Products Portugal, Unipessoal Lda, Porto, Portugal
| | - Ana Raquel Madureira
- CBQF-Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
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21
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Bazina L, Bitounis D, Cao X, DeLoid GM, Parviz D, Strano MS, Greg Lin HY, Bell DC, Thrall BD, Demokritou P. Biotransformations and cytotoxicity of eleven graphene and inorganic two-dimensional nanomaterials using simulated digestions coupled with a triculture in vitro model of the human gastrointestinal epithelium. ENVIRONMENTAL SCIENCE. NANO 2021; 8:3233-3249. [PMID: 37465590 PMCID: PMC10353755 DOI: 10.1039/d1en00594d] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Background Engineered nanomaterials (ENMs) have already made their way into myriad applications and products across multiple industries. However, the potential health risks of exposure to ENMs remain poorly understood. This is particularly true for the emerging class of ENMs know as 2-dimensional nanomaterials (2DNMs), with a thickness of one or a few layers of atoms arranged in a planar structure. Methods The present study assesses the biotransformations and in vitro cytotoxicity in the gastrointestinal tract of 11 2DNMs, namely graphene, graphene oxide (GO), partially reduced graphene oxide (prGO), reduced graphene oxide (rGO), hexagonal boron nitride (h-BN), molybdenum disulphide (MoS2), and tungsten disulphide (WS2). The evaluated pristine materials were either readily dispersed in water or dispersed with the use of a surfactant (Na-cholate or PF108). Materials dispersed in a fasting food model (FFM, water) were subjected to simulated 3-phase (oral, gastric, and small intestinal) digestion to replicate the biotransformations that would occur in the GIT after ingestion. A triculture model of small intestinal epithelium was used to assess the effects of the digested products (digestas) on epithelial layer integrity, cytotoxicity, viability, oxidative stress, and initiation of apoptosis. Results Physicochemical characterization of the 2DNMs in FFM dispersions and in small intestinal digestas revealed significant agglomeration by all materials during digestion, most prominently by graphene, which was likely caused by interactions with digestive proteins. Also, MoS2 had dissolved by ~75% by the end of simulated digestion. Other than a low but statistically significant increase in cytotoxicity observed with all inorganic materials and graphene dispersed in PF108, no adverse effects were observed in the exposed tricultures. Conclusions Our results suggest that occasional ingestion of small quantities of 2DNMs may not be highly cytotoxic in a physiologically relevant in vitro model of the intestinal epithelium. Still, their inflammatory or genotoxic potential after short- or long-term ingestion remains unclear and needs to be studied in future in vitro and in vivo studies. These would include studies of effects on co-ingested nutrient digestion and absorption, which have been documented for numerous ingested ENMs, as well as effects on the gut microbiome, which can have important health implications.
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Affiliation(s)
- Lila Bazina
- Center for Nanotechnology and Nanotoxicology, HSPH-NIEHS Nanosafety Research Center, Department of Environmental Health, Harvard School T.H. Chan of Public Health, Boston, MA 02115, USA
| | - Dimitrios Bitounis
- Center for Nanotechnology and Nanotoxicology, HSPH-NIEHS Nanosafety Research Center, Department of Environmental Health, Harvard School T.H. Chan of Public Health, Boston, MA 02115, USA
| | - Xiaoqiong Cao
- Center for Nanotechnology and Nanotoxicology, HSPH-NIEHS Nanosafety Research Center, Department of Environmental Health, Harvard School T.H. Chan of Public Health, Boston, MA 02115, USA
| | - Glen M DeLoid
- Center for Nanotechnology and Nanotoxicology, HSPH-NIEHS Nanosafety Research Center, Department of Environmental Health, Harvard School T.H. Chan of Public Health, Boston, MA 02115, USA
| | - Dorsa Parviz
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Michael S Strano
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Hao-Yu Greg Lin
- Center for Nanoscale Systems, Harvard University, Cambridge, Massachusetts 02138, USA
| | - David C Bell
- Center for Nanoscale Systems, Harvard University, Cambridge, Massachusetts 02138, USA
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Brian D Thrall
- Biological Sciences Division, Pacific Northwest National Laboratory Richland, WA 99354, USA
| | - Philip Demokritou
- Center for Nanotechnology and Nanotoxicology, HSPH-NIEHS Nanosafety Research Center, Department of Environmental Health, Harvard School T.H. Chan of Public Health, Boston, MA 02115, USA
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22
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Moloi MS, Lehutso RF, Erasmus M, Oberholster PJ, Thwala M. Aquatic Environment Exposure and Toxicity of Engineered Nanomaterials Released from Nano-Enabled Products: Current Status and Data Needs. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2868. [PMID: 34835631 PMCID: PMC8618637 DOI: 10.3390/nano11112868] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/21/2021] [Accepted: 10/23/2021] [Indexed: 01/17/2023]
Abstract
Rapid commercialisation of nano-enabled products (NEPs) elevates the potential environmental release of engineered nanomaterials (ENMs) along the product life cycle. The current review examined the state of the art literature on aquatic environment exposure and ecotoxicity of product released (PR) engineered nanomaterials (PR-ENMs). Additionally, the data obtained were applied to estimate the risk posed by PR-ENMs to various trophic levels of aquatic biota as a means of identifying priority NEPs cases that may require attention with regards to examining environmental implications. Overall, the PR-ENMs are predominantly associated with the matrix of the respective NEPs, a factor that often hinders proper isolation of nano-driven toxicity effects. Nevertheless, some studies have attributed the toxicity basis of observed adverse effects to a combination of the released ions, ENMs and other components of NEPs. Notwithstanding the limitation of current ecotoxicology data limitations, the risk estimated herein points to an elevated risk towards fish arising from fabrics' PR-nAg, and the considerable potential effects from sunscreens' PR-nZnO and PR-nTiO2 to algae, echinoderms, and crustaceans (PR-nZnO), whereas PR-nTiO2 poses no significant risk to echinoderms. Considering that the current data limitations will not be overcome immediately, we recommend the careful application of similar risk estimation to isolate/prioritise cases of NEPs for detailed characterisation of ENMs' release and effects in aquatic environments.
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Affiliation(s)
- Mbuyiselwa Shadrack Moloi
- Centre for Environmental Management, University of the Free State, Bloemfontein 9031, South Africa; (M.S.M.); (P.J.O.)
| | | | - Mariana Erasmus
- Centre for Mineral Biogeochemistry, University of the Free State, Bloemfontein 9031, South Africa;
| | - Paul Johan Oberholster
- Centre for Environmental Management, University of the Free State, Bloemfontein 9031, South Africa; (M.S.M.); (P.J.O.)
| | - Melusi Thwala
- Centre for Environmental Management, University of the Free State, Bloemfontein 9031, South Africa; (M.S.M.); (P.J.O.)
- Water Centre, Council for Scientific and Industrial Research, Pretoria 0001, South Africa;
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Di Cristo L, Oomen AG, Dekkers S, Moore C, Rocchia W, Murphy F, Johnston HJ, Janer G, Haase A, Stone V, Sabella S. Grouping Hypotheses and an Integrated Approach to Testing and Assessment of Nanomaterials Following Oral Ingestion. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2623. [PMID: 34685072 PMCID: PMC8541163 DOI: 10.3390/nano11102623] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/29/2021] [Accepted: 10/01/2021] [Indexed: 02/07/2023]
Abstract
The risk assessment of ingested nanomaterials (NMs) is an important issue. Here we present nine integrated approaches to testing and assessment (IATAs) to group ingested NMs following predefined hypotheses. The IATAs are structured as decision trees and tiered testing strategies for each decision node to support a grouping decision. Implications (e.g., regulatory or precautionary) per group are indicated. IATAs integrate information on durability and biopersistence (dissolution kinetics) to specific hazard endpoints, e.g., inflammation and genotoxicity, which are possibly indicative of toxicity. Based on IATAs, groups of similar nanoforms (NFs) of a NM can be formed, such as very slow dissolving, highly biopersistent and systemically toxic NFs. Reference NMs (ZnO, SiO2 and TiO2) along with related NFs are applied as case studies to testing the oral IATAs. Results based on the Tier 1 level suggest a hierarchy of biodurability and biopersistence of TiO2 > SiO2 > ZnO, and are confirmed by in vivo data (Tier 3 level). Interestingly, our analysis suggests that TiO2 and SiO2 NFs are able to induce both local and systemic toxicity along with microbiota dysbiosis and can be grouped according to the tested fate and hazard descriptors. This supports that the decision nodes of the oral IATAs are suitable for classification and assessment of the toxicity of NFs.
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Affiliation(s)
- Luisana Di Cristo
- Nanoregulatory Platform, Drug Discovery and Development Department, Istituto Italiano Di Tecnologia, 16163 Genova, Italy; (L.D.C.); (C.M.)
| | - Agnes G. Oomen
- National Institute for Public Health and the Environment (RIVM), 3720 Bilthoven, The Netherlands; (A.G.O.); (S.D.)
| | - Susan Dekkers
- National Institute for Public Health and the Environment (RIVM), 3720 Bilthoven, The Netherlands; (A.G.O.); (S.D.)
| | - Colin Moore
- Nanoregulatory Platform, Drug Discovery and Development Department, Istituto Italiano Di Tecnologia, 16163 Genova, Italy; (L.D.C.); (C.M.)
| | - Walter Rocchia
- Computational Modelling of Nanoscale and Biophysical Systems—CONCEPT Lab, Istituto Italiano Di Tecnologia, 16163 Genova, Italy;
| | - Fiona Murphy
- Nano Safety Research Group, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK; (F.M.); (H.J.J.); (V.S.)
| | - Helinor J. Johnston
- Nano Safety Research Group, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK; (F.M.); (H.J.J.); (V.S.)
| | - Gemma Janer
- LEITAT Technological Center, 08005 Barcelona, Spain;
| | - Andrea Haase
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), 10589 Berlin, Germany;
| | - Vicki Stone
- Nano Safety Research Group, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK; (F.M.); (H.J.J.); (V.S.)
| | - Stefania Sabella
- Nanoregulatory Platform, Drug Discovery and Development Department, Istituto Italiano Di Tecnologia, 16163 Genova, Italy; (L.D.C.); (C.M.)
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Banerjee A, Shelver WL. Micro- and Nanoplastic-Mediated Pathophysiological Changes in Rodents, Rabbits, and Chickens: A Review. J Food Prot 2021; 84:1480-1495. [PMID: 34347096 DOI: 10.4315/jfp-21-117] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 04/18/2021] [Indexed: 12/14/2022]
Abstract
ABSTRACT Plastics provide tremendous societal benefits and are an indispensable part of our lives. However, fragmented plastics or those intentionally manufactured in small sizes (microplastics and nanoplastics) are of concern because they can infiltrate soils and enter the human food chain through trophic transfer. The pathophysiological impacts of micro- and nanoplastics in humans are not characterized, but their effects in terrestrial mammals may help elucidate their potential effects in humans. Rodent studies have demonstrated that micro- and nanoplastics can breach the intestinal barrier, accumulate in various organs, cause gut dysbosis, decrease mucus secretion, induce metabolic alterations, and cause neurotoxicity, among other pathophysiologic effects. Larger mammals such as rabbits can also absorb microplastics orally. In farm animals such as chickens, microplastics have been detected in the gut, thereby raising food safety concerns. This review mostly focuses on studies conducted to assess effects of micro- and nanoplastic exposure through food and water in terrestrial mammals and farm animals including rodents, rabbits, and chickens; identifies main knowledge gaps; and provides recommendations for further research to understand foodborne micro- and nanoplastic toxicity in humans. HIGHLIGHTS
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Affiliation(s)
- Amrita Banerjee
- U.S. Department of Agriculture, Agricultural Research Service, Edward T. Schafer Agricultural Research Center, Biosciences Research Laboratory, 1616 Albrecht Boulevard N, Fargo, North Dakota 58102, USA
| | - Weilin L Shelver
- U.S. Department of Agriculture, Agricultural Research Service, Edward T. Schafer Agricultural Research Center, Biosciences Research Laboratory, 1616 Albrecht Boulevard N, Fargo, North Dakota 58102, USA
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25
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Toxicity of Nanoparticles in Biomedical Application: Nanotoxicology. J Toxicol 2021; 2021:9954443. [PMID: 34422042 PMCID: PMC8376461 DOI: 10.1155/2021/9954443] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 07/15/2021] [Indexed: 11/17/2022] Open
Abstract
Nanoparticles are of great importance in development and research because of their application in industries and biomedicine. The development of nanoparticles requires proper knowledge of their fabrication, interaction, release, distribution, target, compatibility, and functions. This review presents a comprehensive update on nanoparticles' toxic effects, the factors underlying their toxicity, and the mechanisms by which toxicity is induced. Recent studies have found that nanoparticles may cause serious health effects when exposed to the body through ingestion, inhalation, and skin contact without caution. The extent to which toxicity is induced depends on some properties, including the nature and size of the nanoparticle, the surface area, shape, aspect ratio, surface coating, crystallinity, dissolution, and agglomeration. In all, the general mechanisms by which it causes toxicity lie on its capability to initiate the formation of reactive species, cytotoxicity, genotoxicity, and neurotoxicity, among others.
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26
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More S, Bampidis V, Benford D, Bragard C, Halldorsson T, Hernández‐Jerez A, Hougaard Bennekou S, Koutsoumanis K, Lambré C, Machera K, Naegeli H, Nielsen S, Schlatter J, Schrenk D, Silano (deceased) V, Turck D, Younes M, Castenmiller J, Chaudhry Q, Cubadda F, Franz R, Gott D, Mast J, Mortensen A, Oomen AG, Weigel S, Barthelemy E, Rincon A, Tarazona J, Schoonjans R. Guidance on risk assessment of nanomaterials to be applied in the food and feed chain: human and animal health. EFSA J 2021; 19:e06768. [PMID: 34377190 PMCID: PMC8331059 DOI: 10.2903/j.efsa.2021.6768] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2021] [Indexed: 02/08/2023] Open
Abstract
The EFSA has updated the Guidance on risk assessment of the application of nanoscience and nanotechnologies in the food and feed chain, human and animal health. It covers the application areas within EFSA's remit, including novel foods, food contact materials, food/feed additives and pesticides. The updated guidance, now Scientific Committee Guidance on nano risk assessment (SC Guidance on Nano-RA), has taken account of relevant scientific studies that provide insights to physico-chemical properties, exposure assessment and hazard characterisation of nanomaterials and areas of applicability. Together with the accompanying Guidance on Technical requirements for regulated food and feed product applications to establish the presence of small particles including nanoparticles (Guidance on Particle-TR), the SC Guidance on Nano-RA specifically elaborates on physico-chemical characterisation, key parameters that should be measured, methods and techniques that can be used for characterisation of nanomaterials and their determination in complex matrices. The SC Guidance on Nano-RA also details aspects relating to exposure assessment and hazard identification and characterisation. In particular, nanospecific considerations relating to in vitro/in vivo toxicological studies are discussed and a tiered framework for toxicological testing is outlined. Furthermore, in vitro degradation, toxicokinetics, genotoxicity, local and systemic toxicity as well as general issues relating to testing of nanomaterials are described. Depending on the initial tier results, additional studies may be needed to investigate reproductive and developmental toxicity, chronic toxicity and carcinogenicity, immunotoxicity and allergenicity, neurotoxicity, effects on gut microbiome and endocrine activity. The possible use of read-across to fill data gaps as well as the potential use of integrated testing strategies and the knowledge of modes or mechanisms of action are also discussed. The Guidance proposes approaches to risk characterisation and uncertainty analysis.
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27
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Increasing the Power of Polyphenols through Nanoencapsulation for Adjuvant Therapy against Cardiovascular Diseases. Molecules 2021; 26:molecules26154621. [PMID: 34361774 PMCID: PMC8347607 DOI: 10.3390/molecules26154621] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 07/25/2021] [Accepted: 07/27/2021] [Indexed: 12/27/2022] Open
Abstract
Polyphenols play a therapeutic role in vascular diseases, acting in inherent illness-associate conditions such as inflammation, diabetes, dyslipidemia, hypertension, and oxidative stress, as demonstrated by clinical trials and epidemiological surveys. The main polyphenol cardioprotective mechanisms rely on increased nitric oxide, decreased asymmetric dimethylarginine levels, upregulation of genes encoding antioxidant enzymes via the Nrf2-ARE pathway and anti-inflammatory action through the redox-sensitive transcription factor NF-κB and PPAR-γ receptor. However, poor polyphenol bioavailability and extensive metabolization restrict their applicability. Polyphenols carried by nanoparticles circumvent these limitations providing controlled release and better solubility, chemical protection, and target achievement. Nano-encapsulate polyphenols loaded in food grade polymers and lipids appear to be safe, gaining resistance in the enteric route for intestinal absorption, in which the mucoadhesiveness ensures their increased uptake, achieving high systemic levels in non-metabolized forms. Nano-capsules confer a gradual release to these compounds, as well as longer half-lives and cell and whole organism permanence, reinforcing their effectiveness, as demonstrated in pre-clinical trials, enabling their application as an adjuvant therapy against cardiovascular diseases. Polyphenol entrapment in nanoparticles should be encouraged in nutraceutical manufacturing for the fortification of foods and beverages. This study discusses pre-clinical trials evaluating how nano-encapsulate polyphenols following oral administration can aid in cardiovascular performance.
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Nano-Strategies Targeting the Integrin αvβ3 Network for Cancer Therapy. Cells 2021; 10:cells10071684. [PMID: 34359854 PMCID: PMC8307885 DOI: 10.3390/cells10071684] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/29/2021] [Accepted: 06/30/2021] [Indexed: 12/12/2022] Open
Abstract
Integrin αvβ3, a cell surface receptor, participates in signaling transduction pathways in cancer cell proliferation and metastasis. Several ligands bind to integrin αvβ3 to regulate proliferation and metastasis in cancer cells. Crosstalk between the integrin and other signal transduction pathways also plays an important role in modulating cancer proliferation. Carcinoembryonic antigen cell adhesion molecule 6 (CEACAM6) activates the downstream integrin FAK to stimulate biological activities including cancer proliferation and metastasis. Blockage of signals related to integrin αvβ3 was shown to be a promising target for cancer therapies. 3,3′,5,5′-tetraiodothyroacetic acid (tetrac) completely binds to the integrin with the thyroid hormone to suppress cancer proliferation. The (E)-stilbene analog, resveratrol, also binds to integrin αvβ3 to inhibit cancer growth. Recently, nanotechnologies have been used in the biomedical field for detection and therapeutic purposes. In the current review, we show and evaluate the potentiation of the nanomaterial carrier RGD peptide, derivatives of PLGA-tetrac (NDAT), and nanoresveratrol targeting integrin αvβ3 in cancer therapies.
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29
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Sani A, Cao C, Cui D. Toxicity of gold nanoparticles (AuNPs): A review. Biochem Biophys Rep 2021; 26:100991. [PMID: 33912692 PMCID: PMC8063742 DOI: 10.1016/j.bbrep.2021.100991] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/18/2021] [Accepted: 03/23/2021] [Indexed: 12/14/2022] Open
Abstract
Gold nanoparticles are a kind of nanomaterials that have received great interest in field of biomedicine due to their electrical, mechanical, thermal, chemical and optical properties. With these great potentials came the consequence of their interaction with biological tissues and molecules which presents the possibility of toxicity. This paper aims to consolidate and bring forward the studies performed that evaluate the toxicological aspect of AuNPs which were categorized into in vivo and in vitro studies. Both indicate to some extent oxidative damage to tissues and cell lines used in vivo and in vitro respectively with the liver, spleen and kidney most affected. The outcome of these review showed small controversy but however, the primary toxicity and its extent is collectively determined by the characteristics, preparations and physicochemical properties of the NPs. Some studies have shown that AuNPs are not toxic, though many other studies contradict this statement. In order to have a holistic inference, more studies are required that will focus on characterization of NPs and changes of physical properties before and after treatment with biological media. So also, they should incorporate controlled experiment which includes supernatant control Since most studies dwell on citrate or CTAB-capped AuNPs, there is the need to evaluate the toxicity and pharmacokinetics of functionalized AuNPs with their surface composition which in turn affects their toxicity. Functionalizing the NPs surface with more peculiar ligands would however help regulate and detoxify the uptake of these NPs.
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Affiliation(s)
- A. Sani
- Department of Instrument Science and Engineering, School of Electronic, Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
- Department of Biological Sciences, Bayero University Kano, P.M.B. 3011, Kano, Nigeria
| | - C. Cao
- Department of Instrument Science and Engineering, School of Electronic, Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - D. Cui
- Department of Instrument Science and Engineering, School of Electronic, Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
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30
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Miyazawa T, Itaya M, Burdeos GC, Nakagawa K, Miyazawa T. A Critical Review of the Use of Surfactant-Coated Nanoparticles in Nanomedicine and Food Nanotechnology. Int J Nanomedicine 2021; 16:3937-3999. [PMID: 34140768 PMCID: PMC8203100 DOI: 10.2147/ijn.s298606] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 03/31/2021] [Indexed: 12/12/2022] Open
Abstract
Surfactants, whose existence has been recognized as early as 2800 BC, have had a long history with the development of human civilization. With the rapid development of nanotechnology in the latter half of the 20th century, breakthroughs in nanomedicine and food nanotechnology using nanoparticles have been remarkable, and new applications have been developed. The technology of surfactant-coated nanoparticles, which provides new functions to nanoparticles for use in the fields of nanomedicine and food nanotechnology, is attracting a lot of attention in the fields of basic research and industry. This review systematically describes these "surfactant-coated nanoparticles" through various sections in order: 1) surfactants, 2) surfactant-coated nanoparticles, application of surfactant-coated nanoparticles to 3) nanomedicine, and 4) food nanotechnology. Furthermore, current progress and problems of the technology using surfactant-coated nanoparticles through recent research reports have been discussed.
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Affiliation(s)
- Taiki Miyazawa
- New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai, Miyagi, Japan
| | - Mayuko Itaya
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan
| | - Gregor C Burdeos
- Institute for Animal Nutrition and Physiology, Christian Albrechts University Kiel, Kiel, Germany
| | - Kiyotaka Nakagawa
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan
| | - Teruo Miyazawa
- New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai, Miyagi, Japan
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31
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Kohl Y, Hesler M, Drexel R, Kovar L, Dähnhardt-Pfeiffer S, Selzer D, Wagner S, Lehr T, von Briesen H, Meier F. Influence of Physicochemical Characteristics and Stability of Gold and Silver Nanoparticles on Biological Effects and Translocation across an Intestinal Barrier-A Case Study from In Vitro to In Silico. NANOMATERIALS 2021; 11:nano11061358. [PMID: 34063963 PMCID: PMC8224057 DOI: 10.3390/nano11061358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/09/2021] [Accepted: 05/13/2021] [Indexed: 11/27/2022]
Abstract
A better understanding of their interaction with cell-based tissue is a fundamental prerequisite towards the safe production and application of engineered nanomaterials. Quantitative experimental data on the correlation between physicochemical characteristics and the interaction and transport of engineered nanomaterials across biological barriers, in particular, is still scarce, thus hampering the development of effective predictive non-testing strategies. Against this background, the presented study investigated the translocation of gold and silver nanoparticles across the gastrointestinal barrier along with related biological effects using an in vitro 3D-triple co-culture cell model. Standardized in vitro assays and quantitative polymerase chain reaction showed no significant influence of the applied nanoparticles on both cell viability and generation of reactive oxygen species. Transmission electron microscopy indicated an intact cell barrier during the translocation study. Single particle ICP-MS revealed a time-dependent increase of translocated nanoparticles independent of their size, shape, surface charge, and stability in cell culture medium. This quantitative data provided the experimental basis for the successful mathematical description of the nanoparticle transport kinetics using a non-linear mixed effects modeling approach. The results of this study may serve as a basis for the development of predictive tools for improved risk assessment of engineered nanomaterials in the future.
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Affiliation(s)
- Yvonne Kohl
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280 Sulzbach, Germany; (M.H.); (S.W.); (H.v.B.)
- Correspondence: (Y.K.); (F.M.); Tel.: +49-6897-9071-256 (Y.K.); +49-8191-985-6880 (F.M.)
| | - Michelle Hesler
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280 Sulzbach, Germany; (M.H.); (S.W.); (H.v.B.)
| | - Roland Drexel
- Postnova Analytics GmbH, 86899 Landsberg am Lech, Germany;
| | - Lukas Kovar
- Department of Clinical Pharmacy, Saarland University, 66123 Saarbrücken, Germany; (L.K.); (D.S.); (T.L.)
| | | | - Dominik Selzer
- Department of Clinical Pharmacy, Saarland University, 66123 Saarbrücken, Germany; (L.K.); (D.S.); (T.L.)
| | - Sylvia Wagner
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280 Sulzbach, Germany; (M.H.); (S.W.); (H.v.B.)
| | - Thorsten Lehr
- Department of Clinical Pharmacy, Saarland University, 66123 Saarbrücken, Germany; (L.K.); (D.S.); (T.L.)
| | - Hagen von Briesen
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280 Sulzbach, Germany; (M.H.); (S.W.); (H.v.B.)
| | - Florian Meier
- Postnova Analytics GmbH, 86899 Landsberg am Lech, Germany;
- Correspondence: (Y.K.); (F.M.); Tel.: +49-6897-9071-256 (Y.K.); +49-8191-985-6880 (F.M.)
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32
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Murros KE, Huynh VA, Takala TM, Saris PEJ. Desulfovibrio Bacteria Are Associated With Parkinson's Disease. Front Cell Infect Microbiol 2021; 11:652617. [PMID: 34012926 PMCID: PMC8126658 DOI: 10.3389/fcimb.2021.652617] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 04/19/2021] [Indexed: 01/07/2023] Open
Abstract
Parkinson's disease (PD) is the most prevalent movement disorder known and predominantly affects the elderly. It is a progressive neurodegenerative disease wherein α-synuclein, a neuronal protein, aggregates to form toxic structures in nerve cells. The cause of Parkinson's disease (PD) remains unknown. Intestinal dysfunction and changes in the gut microbiota, common symptoms of PD, are evidently linked to the pathogenesis of PD. Although a multitude of studies have investigated microbial etiologies of PD, the microbial role in disease progression remains unclear. Here, we show that Gram-negative sulfate-reducing bacteria of the genus Desulfovibrio may play a potential role in the development of PD. Conventional and quantitative real-time PCR analysis of feces from twenty PD patients and twenty healthy controls revealed that all PD patients harbored Desulfovibrio bacteria in their gut microbiota and these bacteria were present at higher levels in PD patients than in healthy controls. Additionally, the concentration of Desulfovibrio species correlated with the severity of PD. Desulfovibrio bacteria produce hydrogen sulfide and lipopolysaccharide, and several strains synthesize magnetite, all of which likely induce the oligomerization and aggregation of α-synuclein protein. The substances originating from Desulfovibrio bacteria likely take part in pathogenesis of PD. These findings may open new avenues for the treatment of PD and the identification of people at risk for developing PD.
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Affiliation(s)
- Kari E. Murros
- Neurological Outpatient Clinic of Terveystalo Healthcare, Helsinki, Finland
| | - Vy A. Huynh
- Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
| | - Timo M. Takala
- Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
| | - Per E. J. Saris
- Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
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33
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Mahato DK, Mishra AK, Kumar P. Nanoencapsulation for Agri-Food Applications and Associated Health and Environmental Concerns. Front Nutr 2021; 8:663229. [PMID: 33898505 PMCID: PMC8060450 DOI: 10.3389/fnut.2021.663229] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/12/2021] [Indexed: 11/29/2022] Open
Affiliation(s)
- Dipendra Kumar Mahato
- Consumer-Analytical-Safety-Sensory Food Research Centre, School of Exercise and Nutrition Sciences, Deakin University, Burwood, VIC, Australia
| | | | - Pradeep Kumar
- Applied Microbiology Laboratory, Department of Forestry, North Eastern Regional Institute of Science and Technology, Nirjuli, India
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34
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Fritsche E, Haarmann-Stemmann T, Kapr J, Galanjuk S, Hartmann J, Mertens PR, Kämpfer AAM, Schins RPF, Tigges J, Koch K. Stem Cells for Next Level Toxicity Testing in the 21st Century. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2006252. [PMID: 33354870 DOI: 10.1002/smll.202006252] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/13/2020] [Indexed: 06/12/2023]
Abstract
The call for a paradigm change in toxicology from the United States National Research Council in 2007 initiates awareness for the invention and use of human-relevant alternative methods for toxicological hazard assessment. Simple 2D in vitro systems may serve as first screening tools, however, recent developments infer the need for more complex, multicellular organotypic models, which are superior in mimicking the complexity of human organs. In this review article most critical organs for toxicity assessment, i.e., skin, brain, thyroid system, lung, heart, liver, kidney, and intestine are discussed with regards to their functions in health and disease. Embracing the manifold modes-of-action how xenobiotic compounds can interfere with physiological organ functions and cause toxicity, the need for translation of such multifaceted organ features into the dish seems obvious. Currently used in vitro methods for toxicological applications and ongoing developments not yet arrived in toxicity testing are discussed, especially highlighting the potential of models based on embryonic stem cells and induced pluripotent stem cells of human origin. Finally, the application of innovative technologies like organs-on-a-chip and genome editing point toward a toxicological paradigm change moves into action.
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Affiliation(s)
- Ellen Fritsche
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, 40225, Germany
- Medical Faculty, Heinrich-Heine University Düsseldorf, Düsseldorf, 40225, Germany
| | | | - Julia Kapr
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, 40225, Germany
| | - Saskia Galanjuk
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, 40225, Germany
| | - Julia Hartmann
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, 40225, Germany
| | - Peter R Mertens
- Department of Nephrology and Hypertension, Diabetes and Endocrinology, Otto-von-Guericke-University Magdeburg, Magdeburg, 39106, Germany
| | - Angela A M Kämpfer
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, 40225, Germany
| | - Roel P F Schins
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, 40225, Germany
| | - Julia Tigges
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, 40225, Germany
| | - Katharina Koch
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, 40225, Germany
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35
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Zhang Q, Reinhard BM. Characterizing nanoplastics‐induced stress and its SERS fingerprint in an intestinal membrane model. NANO SELECT 2021. [DOI: 10.1002/nano.202100017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Qianyun Zhang
- Department of Chemistry and The Photonics Center Boston University Boston Massachusetts USA
| | - Björn M. Reinhard
- Department of Chemistry and The Photonics Center Boston University Boston Massachusetts USA
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36
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Lee J, Hosseindoust A, Kim M, Kim K, Kim T, Moturi J, Chae B. Effects of hot-melt extruded nano-copper on the Cu bioavailability and growth of broiler chickens. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2021; 63:295-304. [PMID: 33987605 PMCID: PMC8071743 DOI: 10.5187/jast.2021.e24] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 10/08/2020] [Accepted: 11/25/2020] [Indexed: 12/14/2022]
Abstract
This study was aimed to investigate the Cu bioavailability, growth response,
digestibility of nutrients, and blood metabolites of broiler chicks fed
CuSO4 in nano or common forms. A total of 720 broiler chickens
were distributed between eight treatments according to a completely randomized
design. There were 8 treatments and 6 replicates in each treatment with 15
birds/replicate. The treatments were divided into common copper sulfate at the
doses of 16 ppm, 40 ppm, 80 ppm, and 120 ppm (INO) and hot-melt extruded copper
sulfate at the doses of 16 ppm, 40 ppm, 80 ppm, and 120 ppm (HME-Cu). The
experiment was operated for 35 days in 2 phases (phase 1, d 0 to 14; and phase
2, d 15 to 35). No significant differences were shown in growth performance,
feed intake, FCR, and nutrient digestibility among the treatments. The
concentration of Cu in the serum was increased in the HME-Cu broilers compared
with the INO broilers at phase 2. A linear increase was observed in the
concentration of Cu in the liver in broilers fed INO diets, however, no
significant differences were observed by the supplementation of HME-Cu levels.
The linear increase was detected in the content of Cu in excreta in the INO and
HME-Cu treatments by increasing the dietary Cu content. The HME-Cu treatments
showed a lower Cu concentration in the excreta compared with the INO treatments.
The higher bioavailability of Cu in HME form can decrease the recommended dose
of Cu in broiler diets.
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Affiliation(s)
- JunHyung Lee
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | | | - MinJu Kim
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Queensland 4072, Australia
| | - KwangYeol Kim
- Poultry Research Institute, National Institute of Animal Science, Pyeongchang 25342, Korea
| | - TaeGyun Kim
- College of Animal Life Sciences, Kangwon National University, Chuncheon, 24341, Korea
| | - Joseph Moturi
- College of Animal Life Sciences, Kangwon National University, Chuncheon, 24341, Korea.,Department of Bio-Health Convergence, Kangwon National University, Chuncheon 24341, Korea
| | - ByungJo Chae
- College of Animal Life Sciences, Kangwon National University, Chuncheon, 24341, Korea
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37
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Fernandez CC, Sokolonski AR, Fonseca MS, Stanisic D, Araújo DB, Azevedo V, Portela RD, Tasic L. Applications of Silver Nanoparticles in Dentistry: Advances and Technological Innovation. Int J Mol Sci 2021; 22:2485. [PMID: 33801230 PMCID: PMC7957900 DOI: 10.3390/ijms22052485] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 02/21/2021] [Accepted: 02/21/2021] [Indexed: 12/13/2022] Open
Abstract
Silver nanoparticles (AgNPs) have been successfully applied in several areas due to their significant antimicrobial activity against several microorganisms. In dentistry, AgNP can be applied in disinfection, prophylaxis, and prevention of infections in the oral cavity. In this work, the use of silver nanoparticles in dentistry and associated technological innovations was analyzed. The scientific literature was searched using PubMed and Scopus databases with descriptors related to the use of silver nanoparticles in dentistry, resulting in 90 open-access articles. The search for patents was restricted to the A61K code (International Patent Classification), using the same descriptors, resulting in 206 patents. The results found were ordered by dental specialties and demonstrated the incorporation of AgNPs in different areas of dentistry. In this context, the search for patents reaffirmed the growth of this technology and the dominance of the USA pharmaceutical industry over AgNPs product development. It could be concluded that nanotechnology is a promising area in dentistry with several applications.
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Affiliation(s)
- Clara Couto Fernandez
- Laboratory of Immunology and Molecular Biology, Health Sciences Institute, Federal University of Bahia, Salvador, BA 40140-100, Brazil; (C.C.F.); (M.S.F.)
| | - Ana Rita Sokolonski
- Laboratory of Oral Biochemistry, Health Sciences Institute, Federal University of Bahia, Salvador, BA 40140-100, Brazil; (A.R.S.); (D.B.A.)
| | - Maísa Santos Fonseca
- Laboratory of Immunology and Molecular Biology, Health Sciences Institute, Federal University of Bahia, Salvador, BA 40140-100, Brazil; (C.C.F.); (M.S.F.)
| | - Danijela Stanisic
- Laboratory of Chemical Biology, Institute of Chemistry, State University of Campinas, Campinas, SP 13083-970, Brazil; (D.S.); (L.T.)
| | - Danilo Barral Araújo
- Laboratory of Oral Biochemistry, Health Sciences Institute, Federal University of Bahia, Salvador, BA 40140-100, Brazil; (A.R.S.); (D.B.A.)
| | - Vasco Azevedo
- Laboratory of Cellular and Molecular Genetics, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, MG 31270-901, Brazil;
| | - Ricardo Dias Portela
- Laboratory of Immunology and Molecular Biology, Health Sciences Institute, Federal University of Bahia, Salvador, BA 40140-100, Brazil; (C.C.F.); (M.S.F.)
| | - Ljubica Tasic
- Laboratory of Chemical Biology, Institute of Chemistry, State University of Campinas, Campinas, SP 13083-970, Brazil; (D.S.); (L.T.)
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38
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Sun PP, Lai CS, Hung CJ, Dhaiveegan P, Tsai ML, Chiu CL, Fang JM. Subchronic oral toxicity evaluation of gold nanoparticles in male and female mice. Heliyon 2021; 7:e06577. [PMID: 33855242 PMCID: PMC8027780 DOI: 10.1016/j.heliyon.2021.e06577] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 02/17/2021] [Accepted: 03/18/2021] [Indexed: 12/28/2022] Open
Abstract
Gold nanoparticles (AuNPs) are biocompatible nanomaterials with potential application in the food industry. The safety of AuNPs oral consumption remains inconclusive, and information on possible long-term toxicity is limited. The current study aimed to evaluate the subchronic oral toxicity of AuNPs in male and female Institute of Cancer Research (ICR) mice. Citrate-coated spherical AuNPs with 53 nm diameters were prepared and orally administered to the mice. No mortality or clinical abnormalities were observed following daily administration of AuNPs at the dosages of 0.2, 2, and 20 mg/kg for 90 days. There was no significant difference in body weight or the relative organs' weights between the control and AuNPs-treated mice. No gross abnormalities or histopathological changes were observed except that the male mice treated with high dose (20 mg/kg AuNPs) showed minor infiltration in the kidneys, and female mice showed a reduced A/G ratio and elevated platelet indices. Overall, the 90-day long-term oral consumption of AuNPs did not cause significant toxicity in mice.
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Affiliation(s)
- Pei-Pei Sun
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung, 811, Taiwan
| | - Ching-Shu Lai
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung, 811, Taiwan
| | - Chung-Jung Hung
- Tripod Nano Technology, No. 171, Sec. 1, Mei Shi Rd., Yang Mei District, Taoyuan 32656, Taiwan
| | - Periyathambi Dhaiveegan
- Tripod Nano Technology, No. 171, Sec. 1, Mei Shi Rd., Yang Mei District, Taoyuan 32656, Taiwan
| | - Mei-Ling Tsai
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung, 811, Taiwan
| | - Chun-Lun Chiu
- Tripod Nano Technology, No. 171, Sec. 1, Mei Shi Rd., Yang Mei District, Taoyuan 32656, Taiwan
| | - Jim-Min Fang
- Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 10607, Taiwan
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39
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Omrani M, Goriaux M, Jean-Soro L, Ruban V. Platinum group elements in atmospheric PM 10 particles and dry deposition in France. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:10.1007/s11356-021-12916-8. [PMID: 33638069 DOI: 10.1007/s11356-021-12916-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
Platinum group elements (PGEs, i.e. platinum, Pt; palladium, Pd; and rhodium, Rh) catalyse over 90% of carbon monoxide, nitrogen oxides and hydrocarbons from combustion residues into water vapour, carbon dioxide and nitrogen in the vehicle's catalytic converter. But there is a major concern over these metals in the scientific world, since they are emitted by catalytic converters and accumulating in the environment. The distribution of PGEs in PM10 fraction was studied in an open urban site (Nantes, France) and in a tunnel (Paris, France) using low- and high-volume air samplers. PGEs were also investigated in dry deposition particles and deposited dust sampled in the tunnel. Pd occurred at the highest levels in both PM10 and dry deposition samples, followed by Rh and Pt. Maximum concentrations in PM10 fraction were 114 pg m-3 for Pd, 14.3 pg m-3 for Rh and 3.3 pg m-3 for Pt in the urban site (Nantes) and 91 pg m-3 for Pd and 16 pg m-3 for Rh in the tunnel (Paris). The concentrations for dry depositions in the tunnel were 261 μg kg-1 for Pt, 431 μg kg-1 for Pd and 85 μg kg-1 for Rh. The results on PGEs levels in atmospheric particles and dry depositions are the first data of their kind in France and will provide new insights into the contribution of catalytic converters to the environment. We also observed Pd and Rh being 2 times higher PM10 particles compared to dry depositions, leading us to suggest that particles rich in Pd and Rh are smaller than 10 μm. An overall concentration trend of Pd > Rh > Pt was observed in all samples, showing the replacement of Pt by Pd and Rh in newer catalytic converters.
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Affiliation(s)
- Mehrazin Omrani
- Gustave Eiffel University, F-44344, Bouguenais, France.
- IRSTV, FR CNRS 2488, 44321, Nantes Cedex 3, France.
| | - Mathieu Goriaux
- Gustave Eiffel University, F-44344, Bouguenais, France
- IRSTV, FR CNRS 2488, 44321, Nantes Cedex 3, France
| | - Liliane Jean-Soro
- Gustave Eiffel University, F-44344, Bouguenais, France
- IRSTV, FR CNRS 2488, 44321, Nantes Cedex 3, France
| | - Véronique Ruban
- Gustave Eiffel University, F-44344, Bouguenais, France
- IRSTV, FR CNRS 2488, 44321, Nantes Cedex 3, France
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40
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Banerjee A, Shelver WL. Micro- and nanoplastic induced cellular toxicity in mammals: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 755:142518. [PMID: 33065507 DOI: 10.1016/j.scitotenv.2020.142518] [Citation(s) in RCA: 175] [Impact Index Per Article: 58.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/29/2020] [Accepted: 09/18/2020] [Indexed: 05/09/2023]
Abstract
Plastic based products are ubiquitous due to their tremendous utility in our daily lives. However, the limited biodegradable nature of plastics has recently raised pollution concerns globally, especially micro- and nanoplastics. These anthropogenic pollutants are either manufactured specifically in the small size range for various commercial applications or formed due to fragmentation of macro plastics in the environment. Micro- and nanoplastics are currently widespread in the oceans, freshwater bodies, land and even present in our food. The biological effects of micro- and nanoplastics on aquatic organisms are well documented but their impacts on mammalian system have not been rigorously investigated. This review discusses the potential routes of exposure to micro- and nanoplastics, biological effects of these particles in mammalian cells, factors influencing toxicity, and the probable mechanisms of cytotoxicity. In general, small size, positive charge, high dose, and presence of toxic additives or pollutants in the micro/nanoplastics appear to induce cellular toxicity through oxidative stress, membrane damage, immune response and genotoxicity. Understanding the cellular fate and toxicity of these materials may help extrapolate risks to mammals.
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Affiliation(s)
- Amrita Banerjee
- USDA-Agricultural Research Service, Edward T. Schafer Agricultural Research Center, Biosciences Research Laboratory, 1616 Albrecht Blvd N, Fargo, ND 58102, USA
| | - Weilin L Shelver
- USDA-Agricultural Research Service, Edward T. Schafer Agricultural Research Center, Biosciences Research Laboratory, 1616 Albrecht Blvd N, Fargo, ND 58102, USA.
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41
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das Neves J, Sverdlov Arzi R, Sosnik A. Molecular and cellular cues governing nanomaterial-mucosae interactions: from nanomedicine to nanotoxicology. Chem Soc Rev 2021; 49:5058-5100. [PMID: 32538405 DOI: 10.1039/c8cs00948a] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Mucosal tissues constitute the largest interface between the body and the surrounding environment and they regulate the access of molecules, supramolecular structures, particulate matter, and pathogens into it. All mucosae are characterized by an outer mucus layer that protects the underlying cells from physicochemical, biological and mechanical insults, a mono-layered or stratified epithelium that forms tight junctions and controls the selective transport of solutes across it and associated lymphoid tissues that play a sentinel role. Mucus is a gel-like material comprised mainly of the glycoprotein mucin and water and it displays both hydrophilic and hydrophobic domains, a net negative charge, and high porosity and pore interconnectivity, providing an efficient barrier for the absorption of therapeutic agents. To prolong the residence time, absorption and bioavailability of a broad spectrum of active compounds upon mucosal administration, mucus-penetrating and mucoadhesive particles have been designed by tuning the chemical composition, the size, the density, and the surface properties. The benefits of utilizing nanomaterials that interact intimately with mucosae by different mechanisms in the nanomedicine field have been extensively reported. To ensure the safety of these nanosystems, their compatibility is evaluated in vitro and in vivo in preclinical and clinical trials. Conversely, there is a growing concern about the toxicity of nanomaterials dispersed in air and water effluents that unintentionally come into contact with the airways and the gastrointestinal tract. Thus, deep understanding of the key nanomaterial properties that govern the interplay with mucus and tissues is crucial for the rational design of more efficient drug delivery nanosystems (nanomedicine) and to anticipate the fate and side-effects of nanoparticulate matter upon acute or chronic exposure (nanotoxicology). This review initially overviews the complex structural features of mucosal tissues, including the structure of mucus, the epithelial barrier, the mucosal-associated lymphatic tissues and microbiota. Then, the most relevant investigations attempting to identify and validate the key particle features that govern nanomaterial-mucosa interactions and that are relevant in both nanomedicine and nanotoxicology are discussed in a holistic manner. Finally, the most popular experimental techniques and the incipient use of mathematical and computational models to characterize these interactions are described.
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Affiliation(s)
- José das Neves
- i3S - Instituto de Investigação e Inovação em Saúde & INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - Roni Sverdlov Arzi
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, De-Jur Building, Office 607, Haifa, 3200003, Israel.
| | - Alejandro Sosnik
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, De-Jur Building, Office 607, Haifa, 3200003, Israel.
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42
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Abstract
In recent years, nanoparticles have become a fashionable subject of research due to their sizes, shapes, and unique intrinsic physicochemical properties. In particular for the last 5 years, nano-Se has received tremendous attention in terms of its production, characteristic, and possible application for poultry/animal science and medical sciences. Indeed, Nano-Se is shown to be a potential source of Se for poultry/animal nutrition. However, there is an urgent need to address the questions related to nano-Se absorption, assimilation, and metabolism. It is not clear at present if major biological effects of nano-Se are due to Se-protein synthesis, direct antioxidant/prooxidant effects, or both. It is necessary to understand how metallic nano-Se can be converted into H2Se and further to SeCys to be incorporated into selenoproteins. The aforementioned issues must be resolved before nano-Se finds its way to animal/poultry production as a feed supplement and clearly this subject warrants further investigation.
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43
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Wang MWH, Goodman JM, Allen TEH. Machine Learning in Predictive Toxicology: Recent Applications and Future Directions for Classification Models. Chem Res Toxicol 2020; 34:217-239. [PMID: 33356168 DOI: 10.1021/acs.chemrestox.0c00316] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In recent times, machine learning has become increasingly prominent in predictive toxicology as it has shifted from in vivo studies toward in silico studies. Currently, in vitro methods together with other computational methods such as quantitative structure-activity relationship modeling and absorption, distribution, metabolism, and excretion calculations are being used. An overview of machine learning and its applications in predictive toxicology is presented here, including support vector machines (SVMs), random forest (RF) and decision trees (DTs), neural networks, regression models, naïve Bayes, k-nearest neighbors, and ensemble learning. The recent successes of these machine learning methods in predictive toxicology are summarized, and a comparison of some models used in predictive toxicology is presented. In predictive toxicology, SVMs, RF, and DTs are the dominant machine learning methods due to the characteristics of the data available. Lastly, this review describes the current challenges facing the use of machine learning in predictive toxicology and offers insights into the possible areas of improvement in the field.
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Affiliation(s)
- Marcus W H Wang
- Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Jonathan M Goodman
- Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Timothy E H Allen
- Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom.,MRC Toxicology Unit, University of Cambridge, Hodgkin Building, Lancaster Road, Leicester LE1 7HB, United Kingdom
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44
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Setyawati MI, Zhao Z, Ng KW. Transformation of Nanomaterials and Its Implications in Gut Nanotoxicology. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001246. [PMID: 32495486 DOI: 10.1002/smll.202001246] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/24/2020] [Indexed: 06/11/2023]
Abstract
Ingestion of engineered nanomaterials (ENMs) is inevitable due to their widespread utilization in the agrifood industry. Safety evaluation has become pivotal to identify the consequences on human health of exposure to these ingested ENMs. Much of the current understanding of nanotoxicology in the gastrointestinal tract (GIT) is derived from studies utilizing pristine ENMs. In reality, agrifood ENMs interact with their microenvironment, and undergo multiple physicochemical transformations, such as aggregation/agglomeration, dissolution, speciation change, and surface characteristics alteration, across their life cycle from synthesis to consumption. This work sieves out the implications of ENM transformations on their behavior, stability, and reactivity in food and product matrices and through the GIT, in relation to measured toxicological profiles. In particular, a strong emphasis is given to understand the mechanisms through which these transformations can affect ENM induced gut nanotoxicity.
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Affiliation(s)
- Magdiel Inggrid Setyawati
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Zhitong Zhao
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Kee Woei Ng
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, 665 Huntington Avenue, Boston, MA, 02115, USA
- Environmental Chemistry and Materials Centre, Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore, 637141, Singapore
- Skin Research Institute of Singapore, Biomedical Science Institutes, Immunos, 8A Biomedical Grove, Singapore, 138648, Singapore
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45
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Patra A, Lalhriatpuii M. Progress and Prospect of Essential Mineral Nanoparticles in Poultry Nutrition and Feeding-a Review. Biol Trace Elem Res 2020; 197:233-253. [PMID: 31828724 DOI: 10.1007/s12011-019-01959-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 10/28/2019] [Indexed: 02/07/2023]
Abstract
Nanobiotechnology is a growing field in animal and veterinary sciences for various practical applications including diagnostic, therapeutic, and nutritional applications. Recently, nanoforms or nanoparticles (NP) of essential minerals have been explored for growth performance, feed utilization, and health status of animals. Various mineral NP, such as calcium, zinc, copper, selenium, and chromium, have been studied in different farm animals including poultry. Because mineral NP are smaller in size, and show different chemical and physical properties, they are usually absorbed in greater amounts from gastrointestinal tract and exert enhanced biological effects in the target tissues of animals. In various studies, mineral NP have been comparatively studied relating to its larger inorganic and organic particles in poultry. There are contradictory findings among the studies on comparative improvement of production performance and other mineral functions perhaps due to different sizes, shapes, and properties of NP, and interactions of minerals present in basal diets. There are not many studies correlating physical and chemical properties of mineral NP and their biological functions in the body. Nonetheless, it appears that mineral NP have potential for their uses as mineral supplements in preference to inorganic mineral supplements for their better absorption avoiding antagonistic interactions with other minerals, growth performance, and physiological functions, especially at lower doses compared with the doses that are recommended for their larger particles. Supplementation of mineral NP in diets could be a promising option in the future. This review summarizes the studies of different essential mineral NP used as mineral supplements for feed intake, growth performance, egg production and quality, and blood variables in poultry.
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Affiliation(s)
- Amlan Patra
- Department of Animal Nutrition, West Bengal University of Animal and Fishery Sciences, 37 K.B. Sarani, Belgachia, Kolkata, 700037, India.
| | - Melody Lalhriatpuii
- National Dairy Research Institute, Eastern Regional Station, Kalyani, West Bengal, India
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46
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Shi JH, Axson JL, Bergin IL, Ault AP. Nanoparticle Digestion Simulator Reveals pH-Dependent Aggregation in the Gastrointestinal Tract. Anal Chem 2020; 92:12257-12264. [PMID: 32786449 DOI: 10.1021/acs.analchem.0c01844] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Determining the physicochemical properties of ingested nanoparticles within the gastrointestinal tract (GIT) is critical for evaluating the impact of environmental exposure and potential for nanoparticle drug delivery. However, it is challenging to predict nanoparticle physicochemical properties at the point of intestinal absorption due to the changing chemical environments within the GIT. Herein, a dynamic nanoparticle digestion simulator (NDS) was constructed to examine nanoparticle evolution due to changing pH and salt concentrations in the stomach and upper intestine. This multicompartment, flow-through system simulates digestion by transferring gastrointestinal fluids and digestive secretions at physiologically relevant time scales and flow rates. Pronounced differences in aggregation and aggregate stability were observed with silver nanoparticles (citrate-coated) with an initial hydrodynamic diameter (Dh) of 24.6 ± 0.4 nm examined under fasted (pH 2) and fed (pH 5) gastric conditions using nanoparticle tracking analysis (NTA) for size distributions and transmission electron microscopy with energy dispersive X-ray spectroscopy (TEM-EDX) for morphology and elemental composition. Under fasted stomach conditions, particles aggregated to Dh = 130 ± 10 nm and remained as large aggregates in the upper intestinal compartments (duodenum and jejunum) ending with Dh = 110 ± 20 nm and a smaller mode at 59 ± 8 nm. In contrast, under fed conditions, nanoparticles aggregated to 60 ± 10 nm in the stomach, then disaggregated to individual nanoparticles (26 ± 2 nm) in the intestinal compartments. The NDS provides an analytical approach for studying nanoparticle physicochemical modifications within the GIT and the impacts of intentionally and unintentionally ingested nanoparticles.
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Affiliation(s)
- Jia H Shi
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jessica L Axson
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Ingrid L Bergin
- Unit for Laboratory Animal Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109, United States
| | - Andrew P Ault
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
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47
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Tleuova AB, Wielogorska E, Talluri VSSLP, Štěpánek F, Elliott CT, Grigoriev DO. Recent advances and remaining barriers to producing novel formulations of fungicides for safe and sustainable agriculture. J Control Release 2020; 326:468-481. [PMID: 32721524 DOI: 10.1016/j.jconrel.2020.07.035] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/20/2020] [Accepted: 07/21/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Fungi have evolved for 1 billion years and due to their adaptability and resilience can be found in multiple habitats around the globe. Among numerous species of fungi, some are pathogenic, and humans have battled since the dawn of organized agriculture to reduce production losses. With the arrival of fungicides many gains have been made in this struggle. However, though fungicides have greatly contributed to substantial increase in agricultural productivity, their over usage has led to both health and environmental repercussions. They remain cornerstone of the agriculture industry, however, development of safer formulations to champion sustainable and eco-friendly agriculture is of great importance, especially in face of a growing global population, climate change and increasing fungal resistance to existing compounds. SCOPE AND APPROACH The aim of this review is to present the state of the art in fungicides formulations developed for agrochemistry, also describing recent improvements in their safety, with special focus on fungicides used most against the ten most important fungal pathogens. KEY FINDINGS AND CONCLUSIONS The major focus in the field remains to be the improvement of the overall performance of the fungicide formulations. The research trends are also moving towards developing more eco-friendly formulations. However, there are still very few studies assessing nanoformulations toxicity and environmental impact. For example, there is still a limited body of research on the holistic assessment of nanoformulation shells' fate in soil and in the environment after release, as well as redistribution within plants after absorption, with no studies on human or environmental exposure.
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Affiliation(s)
- Aiym B Tleuova
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic.
| | - Ewa Wielogorska
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - V S S L Prasad Talluri
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic; Department of Biotechnology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - František Štěpánek
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Christopher T Elliott
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast BT9 5AG, UK
| | - Dmitry O Grigoriev
- Fraunhofer Institute for Applied Polymer Research IAP, 14476 Potsdam, Golm, Germany
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Monteiro CE, Cobelo-García A, Caetano M, Correia Dos Santos M. Speciation analysis of Pt and Rh in urban road dust leachates. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 722:137954. [PMID: 32208280 DOI: 10.1016/j.scitotenv.2020.137954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 03/12/2020] [Accepted: 03/13/2020] [Indexed: 06/10/2023]
Abstract
Road dust is a major reservoir of anthropogenic Pt and Rh. However, information about how these elements are released to the aquatic systems under environmentally relevant conditions is scarce. In this work, an innovative combination of analytical strategies is used to provide insight into the speciation analysis of those elements. A composite sample of road dust thoroughly characterized was incubated over 7 days in synthetic rainwater and seawater. In the filtered (<0.45 μm) solutions, truly dissolved Pt and Rh concentrations were measured by adsorptive cathodic stripping voltammetry, while total concentrations were determined by inductively coupled plasma mass spectrometry. Truly dissolved species corresponded to a small fraction of total Pt and Rh in the road dust; accordingly, values of 0.01% and 0.1% were obtained in both media for Pt and Rh, respectively, which remained constant over time. The concentration of total filter-passing species predominates for both elements by a factor of 10 and 2-3 for Pt and Rh, respectively, evidencing that particulate species coexist with truly dissolved forms. Temporal variations were observed for Pt, as opposed to Rh. These findings contribute to the gap in knowledge regarding Pt and Rh mobility in aquatic systems.
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Affiliation(s)
- Carlos E Monteiro
- Environmental Biogeochemistry, Centro de Química Estrutural, IST-UL, Lisboa, Portugal; IPMA - Instituto Português do Mar e da Atmosfera, Algés, Portugal.
| | | | - Miguel Caetano
- IPMA - Instituto Português do Mar e da Atmosfera, Algés, Portugal
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49
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Nanospheres Loaded with Curcumin Improve the Bioactivity of Umbilical Cord Blood-Mesenchymal Stem Cells via c-Src Activation During the Skin Wound Healing Process. Cells 2020; 9:cells9061467. [PMID: 32549381 PMCID: PMC7348987 DOI: 10.3390/cells9061467] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/13/2020] [Accepted: 06/14/2020] [Indexed: 12/11/2022] Open
Abstract
Curcumin, a hydrophobic polyphenol derived from turmeric, has been used a food additive and as a herbal medicine for the treatment of various diseases, but the clinical application of curcumin is restricted by its poor aqueous solubility and its low permeability and bioavailability levels. In the present study, we investigate the functional role of a nanosphere loaded with curcumin (CN) in the promotion of the motility of human mesenchymal stem cells (MSCs) during the skin wound healing process. CN significantly increased the motility of umbilical cord blood (UCB)-MSCs and showed 10,000-fold greater migration efficacy than curcumin. CN stimulated the phosphorylation of c-Src and protein kinase C which are responsible for the distinctive activation of the MAPKs. Interestingly, CN significantly induced the expression levels of α-actinin-1, profilin-1 and filamentous-actin, as regulated by the phosphorylation of nuclear factor-kappa B during its promotion of cell migration. In a mouse skin excisional wound model, we found that transplantation of UCB-MSCs pre-treated with CN enhanced wound closure, granulation, and re-epithelialization at mouse skin wound sites. These results indicate that CN is a functional agent that promotes the mobilization of UCB-MSCs for cutaneous wound repair.
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Andreani T, Fernandes PMV, Nogueira V, Pinto VV, Ferreira MJ, Rasteiro MG, Pereira R, Pereira CM. The critical role of the dispersant agents in the preparation and ecotoxicity of nanomaterial suspensions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:19845-19857. [PMID: 32227304 DOI: 10.1007/s11356-020-08323-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 03/04/2020] [Indexed: 06/10/2023]
Abstract
This work reports the role of different dispersants, namely, polyethylene glycol (PEG 200 2%), ethylene glycol 5%, ethanol 2%, dimethyl sulfoxide (DMSO 5%), and polyvinyl alcohol (PVA 5%) in the toxicity profile of several commercial nanomaterials (NM), such as hydrophilic and hydrophobic TiO2, hydrophilic SiO2, SiO2 in aqueous suspension (aq), and ZnO towards the bioluminescent bacterium Aliivibrio fischeri. The majority of NM showed tendency to form agglomerates in the different dispersants. Although some particle agglomeration could be detected, DMSO at 5% was the best dispersant for hydrophobic TiO2 NM while PVA at 5% was the most effective dispersant for the other types of NM. Average size was not the most relevant aspect accounting for their toxicity. A remarkable reduction in average size was followed by a decrease in NM toxicity, as demonstrated for SiO2 aq. in PVA 5%. Contrarily, despite of high particle agglomeration, ZnO NM showed a higher toxicity to bacteria when compared with other tested NM. Independently of the average particle size or surface charge, the dispersant either enhanced the toxicity to bacteria or acted as physical barrier decreasing the NM harmful effect to A. fischeri.
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Affiliation(s)
- Tatiana Andreani
- Research Center in Chemistry (CIQ), Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre s/n, 4169-007, Porto, Portugal.
- CITAB - Centre for Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, UTAD, Vila Real, Portugal.
| | - Paula M V Fernandes
- Research Center in Chemistry (CIQ), Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre s/n, 4169-007, Porto, Portugal
| | - Verónica Nogueira
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal
| | - Vera V Pinto
- Research Center in Chemistry (CIQ), Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre s/n, 4169-007, Porto, Portugal
- Centro Tecnológico do Calçado de Portugal, Rua de Fundões - Devesa Velha, 3700-121, São João Madeira, Portugal
| | - Maria José Ferreira
- Centro Tecnológico do Calçado de Portugal, Rua de Fundões - Devesa Velha, 3700-121, São João Madeira, Portugal
| | - Maria Graça Rasteiro
- Department of Chemical Engineering, Faculty of Sciences and Technology, University of Coimbra, 3030-290, Coimbra, Portugal
| | - Ruth Pereira
- GreenUPorto - Research Centre on Sustainable Agrifood Production, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal.
| | - Carlos M Pereira
- Research Center in Chemistry (CIQ), Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre s/n, 4169-007, Porto, Portugal
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