1
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Kwiatkowski G, von Witte G, Däpp A, Kocic J, Hattendorf B, Ernst M, Kozerke S. In vivo MRI of hyperpolarized silicon-29 nanoparticles. Magn Reson Med 2024; 92:2631-2640. [PMID: 39119764 DOI: 10.1002/mrm.30244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 06/26/2024] [Accepted: 07/21/2024] [Indexed: 08/10/2024]
Abstract
PURPOSE The objective of the present work was to test the feasibility of in vivo imaging of hyperpolarized 50-nm silicon-29 (29Si) nanoparticles. METHODS Commercially available, crystalline 50-nm nanoparticles were hyperpolarized using dynamic polarization transfer via the endogenous silicon oxide-silicon defects without the addition of exogenous radicals. Phantom experiments were used to quantify the effect of sample dissolution and various surface coating on T1 and T2 relaxation. The in vivo feasibility of detecting hyperpolarized silicon-29 was tested following intraperitoneal, intragastric, or intratumoral injection in mice and compared with the results obtained with previously reported, large, micrometer-size particles. The tissue clearance of SiNPs was quantified in various organs using inductively coupled plasma optical emission spectroscopy. RESULTS In vivo images obtained after intragastric, intraperitoneal, and intratumoral injection compare favorably between small and large SiNPs. Improved distribution of small SiNPs was observed after intraperitoneal and intragastric injection as compared with micrometer-size SiNPs. Sufficient clearance of nanometer-size SiNPs using ex vivo tissue sample analysis was observed after 14 days following injection, indicating their safe use. CONCLUSION In vivo MRI of hyperpolarized small 50-nm SiNPs is feasible with polarization levels and room-temperature relaxation times comparable to large micrometer-size particles.
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Affiliation(s)
| | - Gevin von Witte
- Institute for Biomedical Engineering, University and ETH Zurich, Switzerland
- Laboratory of Inorganic Chemistry, ETH Zurich, Switzerland
| | - Alexander Däpp
- Laboratory of Inorganic Chemistry, ETH Zurich, Switzerland
| | - Jovana Kocic
- Institute for Molecular Physical Science, ETH Zurich, Switzerland
| | - Bodo Hattendorf
- Institute for Molecular Physical Science, ETH Zurich, Switzerland
| | - Matthias Ernst
- Laboratory of Inorganic Chemistry, ETH Zurich, Switzerland
| | - Sebastian Kozerke
- Institute for Biomedical Engineering, University and ETH Zurich, Switzerland
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2
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Yan J, Siwakoti P, Shaw S, Bose S, Kokil G, Kumeria T. Porous silicon and silica carriers for delivery of peptide therapeutics. Drug Deliv Transl Res 2024:10.1007/s13346-024-01609-7. [PMID: 38819767 DOI: 10.1007/s13346-024-01609-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2024] [Indexed: 06/01/2024]
Abstract
Peptides have gained tremendous popularity as biological therapeutic agents in recent years due to their favourable specificity, diversity of targets, well-established screening methods, ease of production, and lower cost. However, their poor physiological and storage stability, pharmacokinetics, and fast clearance have limited their clinical translation. Novel nanocarrier-based strategies have shown promise in overcoming these issues. In this direction, porous silicon (pSi) and mesoporous silica nanoparticles (MSNs) have been widely explored as potential carriers for the delivery of peptide therapeutics. These materials possess several advantages, including large surface areas, tunable pore sizes, and adjustable pore architectures, which make them attractive carriers for peptide delivery systems. In this review, we cover pSi and MSNs as drug carriers focusing on their use in peptide delivery. The review provides a brief overview of their fabrication, surface modification, and interesting properties that make them ideal peptide drug carriers. The review provides a systematic account of various studies that have utilised these unique porous carriers for peptide delivery describing significant in vitro and in vivo results. We have also provided a critical comparison of the two carriers in terms of their physicochemical properties and short-term and long-term biocompatibility. Lastly, we have concluded the review with our opinion of this field and identified key areas for future research for clinical translation of pSi and MSN-based peptide therapeutic formulations.
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Affiliation(s)
- Jiachen Yan
- School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Prakriti Siwakoti
- School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
- Australian Centre for Nanomedicine, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Siuli Shaw
- Centre for Medical Biotechnology, Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, 201301, India
| | - Sudeep Bose
- Centre for Medical Biotechnology, Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, 201301, India
- Amity Institute of Molecular Medicine and Stem Cell Research, Amity University, Noida, Uttar Pradesh, 201301, India
| | - Ganesh Kokil
- School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia.
- Australian Centre for Nanomedicine, The University of New South Wales, Sydney, NSW, 2052, Australia.
| | - Tushar Kumeria
- School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia.
- Australian Centre for Nanomedicine, The University of New South Wales, Sydney, NSW, 2052, Australia.
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD, 4102, Australia.
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3
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Cheong IT, Yang Szepesvari L, Ni C, Butler C, O'Connor KM, Hooper R, Meldrum A, Veinot JGC. Not all silicon quantum dots are equal: photostability of silicon quantum dots with and without a thick amorphous shell. NANOSCALE 2024; 16:592-603. [PMID: 38058198 DOI: 10.1039/d3nr04478e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Luminescent colloidal silicon quantum dots (SiQDs) are sustainable alternatives to metal-based QDs for various optical applications. While the materials are reliant on their photoluminescence efficiency, the relationship between the structure and photostability of SiQDs is yet to be well studied. An amorphous silicon (a-Si) shell was recently discovered in SiQDs prepared by thermally-processed silicon oxides. As a-Si is known as a source of defects upon UV irradiation, the disordered shell could potentially have an adverse effect on the optical properties of nanoparticles. Herein, the photostability of ∼5 nm diameter SiQDs with an amorphous shell was compared with that of over-etched SiQDs of equivalent dimensions that bore an a-Si shell of negligible thickness. An UV-induced degradation study was conducted by subjecting toluene solutions of SiQDs to 365 nm light-emitting diodes (LEDs) under an inert atmosphere for predetermined times up to 72 hours. The structure, composition, and optical responses of the exposed SiQDs were evaluated.
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Affiliation(s)
- I Teng Cheong
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
| | | | - Chuyi Ni
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
| | - Cole Butler
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
| | - Kevin M O'Connor
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
| | - Riley Hooper
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
| | - Alkiviathes Meldrum
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Jonathan G C Veinot
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
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4
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Zhuravskii SG, Yukina GY, Sukhorukova EG, Kryzhanovskaya EA, Polovnikov IV, Belorus AO, Spivak YM, Galagudza MM. The Pattern of Granuloma Formation in the Liver of Rats as a Reflection of the Mechanism of Internalization of Submicron Silicon Particles. Bull Exp Biol Med 2024; 176:399-402. [PMID: 38342809 DOI: 10.1007/s10517-024-06032-z] [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: 05/11/2023] [Indexed: 02/13/2024]
Abstract
A morphological analysis of the liver of Wistar rats was performed 2 months after a single intravenous injection of porous silicon particles of different sizes (60-80, 250-300, and 500-600 nm; 2 mg/ml, 1 ml). Histological, immunohistochemical, and electron microscopic methods showed the development of CD68+ granulomas in all experimental groups. Injection of 60-80-nm porous silicon particles led to the formation of single large granulomas (>2000 μm2), while 500-600-nm nanoparticles caused the formation of numerous smaller granulomas. The mechanism of involution of granulomas by apoptosis of Kupffer cells and the absence of subsequent connective tissue remodeling of the organ tissue is shown.
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Affiliation(s)
- S G Zhuravskii
- I. P. Pavlov First St. Petersburg State Medical University, Ministry of Health of the Russian Federation, St. Petersburg, Russia.
- V. A. Almazov National Medical Research Center, Ministry of Health of the Russian Federation, St. Petersburg, Russia.
| | - G Yu Yukina
- I. P. Pavlov First St. Petersburg State Medical University, Ministry of Health of the Russian Federation, St. Petersburg, Russia
| | - E G Sukhorukova
- I. P. Pavlov First St. Petersburg State Medical University, Ministry of Health of the Russian Federation, St. Petersburg, Russia
| | - E A Kryzhanovskaya
- I. P. Pavlov First St. Petersburg State Medical University, Ministry of Health of the Russian Federation, St. Petersburg, Russia
| | - I V Polovnikov
- I. P. Pavlov First St. Petersburg State Medical University, Ministry of Health of the Russian Federation, St. Petersburg, Russia
| | - A O Belorus
- V. I. Ul'yanov (Lenin) St. Petersburg Electrotechnical University "LETI", St. Petersburg, Russia
| | - Yu M Spivak
- V. I. Ul'yanov (Lenin) St. Petersburg Electrotechnical University "LETI", St. Petersburg, Russia
| | - M M Galagudza
- I. P. Pavlov First St. Petersburg State Medical University, Ministry of Health of the Russian Federation, St. Petersburg, Russia
- V. A. Almazov National Medical Research Center, Ministry of Health of the Russian Federation, St. Petersburg, Russia
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5
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Shahtaheri SJ, Goodarzi Z, Karami E, Khavanin A, Khansari MG, Kiani M, Rashidy-Pour A. Effects of acute exposure to Al 2O 3-NPs (α and γ) and white noise and their combination on cochlea structure and function in Wistar rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:89859-89876. [PMID: 37460886 DOI: 10.1007/s11356-023-28745-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 07/07/2023] [Indexed: 08/11/2023]
Abstract
Hearing loss induced by noise and combinations of factors is a common occupational disease among workers. This study aimed to investigate the impact of acute exposure to white noise and Al2O3 NPs, alone and in combination, on changes in the hearing and structural functions of the cochlea in rats. Thirty-six rats were randomly assigned to one of six groups: Control, acute exposure to white noise, exposure to γ-Al2O3 NPs, exposure to noise plus γ-Al2O3 NPs, exposure to α-Al2O3 NPs, and exposure to the combination of noise plus α-Al2O3 NPs. TTS and PTS were examined using DPOAE, while oxidative index (MDA, GSH-Px), gene expression (NOX3, TGF-ß, CYP1A1), protein expression (ß-Tubulin, Myosin VII), and histopathological changes were examined in the cochlea. The morphology of Al2O3 NPs was examined by TEM. The results of the DPOAE test showed a significant increase in TTS in all groups and an increase in PTS in the groups exposed to noise, γ-Al2O3 NPs, and a combination of noise plus Al2O3 NPs (P < 0.05). In the group exposed to white noise plus Al2O3 NPs, the MDA levels increased, the level of GSH-Px decreased, and the expression percentage of ß-Tubulin and Myosin VII decreased, while the expression of NOX3, TGF-ß, and CYP1A1 (except for the α-Al2O3 NPs group) significantly increased (P < 0.05). Histopathological changes of the cochlea indicated damage to hair and ganglion cells, which was more severe in the combined exposure group. The combined and independent exposure to white noise and Al2O3 NPs damaged hair and ganglion cells for high-frequency perception, affecting the function and structure of the cochlea and leading to TTS and PTS.
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Affiliation(s)
- Seyed Jamaleddin Shahtaheri
- Department of Occupational Health Engineering, School of Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Goodarzi
- Department of Occupational Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Esmaeil Karami
- Department of Occupational Health Engineering, School of Health, Tehran University of Medical Sciences, Tehran, Iran.
| | - Ali Khavanin
- Department of Occupational Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mahmoud Ghazi Khansari
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehrafarin Kiani
- Department of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ali Rashidy-Pour
- Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran
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Jiménez Garavito MC, Cares Pacheco MG, Gerardin F, Falk V. Silica Nanoparticles as Glidants for Industrial Processing: A Statistical Approach. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Maria-C. Jiménez Garavito
- Université de Lorraine, CNRS, LRGP, F-54000Nancy, France
- Department of Process Engineering, Institut National de Recherche et de Sécurité, INRS, 54519Vandœuvre, France
| | | | - Fabien Gerardin
- Department of Process Engineering, Institut National de Recherche et de Sécurité, INRS, 54519Vandœuvre, France
| | - Véronique Falk
- Université de Lorraine, CNRS, LRGP, F-54000Nancy, France
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Hassan SF, Islam MT, Saheb N, Baig MMA. Magnesium for Implants: A Review on the Effect of Alloying Elements on Biocompatibility and Properties. MATERIALS (BASEL, SWITZERLAND) 2022; 15:5669. [PMID: 36013806 PMCID: PMC9412399 DOI: 10.3390/ma15165669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/31/2022] [Accepted: 06/11/2022] [Indexed: 06/15/2023]
Abstract
An attempt is made to cover the whole of the topic of biodegradable magnesium (Mg) alloys with a focus on the biocompatibility of the individual alloying elements, as well as shed light on the degradation characteristics, microstructure, and mechanical properties of most binary alloys. Some of the various work processes carried out by researchers to achieve the alloys and their surface modifications have been highlighted. Additionally, a brief look into the literature on magnesium composites as also been included towards the end, to provide a more complete picture of the topic. In most cases, the chronological order of events has not been particularly followed, and instead, this work is concentrated on compiling and presenting an update of the work carried out on the topic of biodegradable magnesium alloys from the recent literature available to us.
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Affiliation(s)
- S. Fida Hassan
- Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
- Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - M. T. Islam
- Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - N. Saheb
- Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
- Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - M. M. A. Baig
- Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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8
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Maurya L, Singh S, Shah K, Dewangan HK. Dual Vinorelbine bitartrate and Resveratrol Loaded Polymeric Aqueous core Nanocapsules for Synergistic Efficacy in Breast Cancer. J Microencapsul 2022; 39:299-313. [PMID: 35470755 DOI: 10.1080/02652048.2022.2070679] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
AIM The current study focused on the development and evaluation of aqueous core nanocapsules (ACNs) as an effective carrier to deliver an optimal synergistic combination of a highly water soluble Vinorelbine bitartrate (VRL) and a poorly water-soluble Resveratrol (RES) for treatment of breast cancer. METHODS Various molar ratios of VRL to RES were screened against MCF-7 cell lines to determine the synergistic effects using Chou-Talalay method. Synergistic ratio of therapeutic agents was then incorporated into aqueous core nanocapsules utilizing a double emulsion solvent evaporation technique to yield dual drug loaded nanocapsules (dd-ACNs). The dd-ACNs were optimized using Box-Behnken design and characterized for physicochemical parameters such as particle size, zeta potential, polydispersity index, total drug content and encapsulation efficiency, surface morphology, drug excipient compatibility by FTIR and DSC, release kinetics, toxicity studies and anticancer efficacy (in-vitro and in-vivo). RESULTS Results demonstrated that the combination exhibited maximum synergy when higher doses of VRL were combined with smaller doses of RES (1:1, 5:1, and 10:1). The dual drug loaded ACNs were found to be stable and depicted a core-shell structure, narrow size range (150.2 ± 3.2 nm) with enhanced encapsulation (80% for VRL and 99% for RES). Moreover, the dd-ACNs were 5 times more efficacious in-vitro than a combination of free drugs, while reducing systemic toxicity. Also, pre-clinical evaluation of dd-ACNs also depicted drastic reduction of tumor volume as compared tp pristine VRL and physical combination of drugs. CONCLUSION The developed dd-ACNs can be applied as potential carrier for delivery of combination of chemotherapeutics at a synergistic ratio at tumor site.
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Affiliation(s)
- Lakshmi Maurya
- KIET School of Pharmacy, KIET Group of Institutions, Delhi-NCR, Meerut Road (NH-58), Ghaziabad-201206, India
| | - Sanjay Singh
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi- 221005, India
| | - Kamal Shah
- Institute of Pharmaceutical Research (IPR), GLA University, Mathura, NH-2 Mathura Delhi Road, PO- Chamuhan, Mathura, Uttar Pradesh-281406, India
| | - Hitesh Kumar Dewangan
- University Institute of Pharma Sciences (UIPS), Chandigarh University NH-95, Chandigarh Ludhiana Highway, Mohali- 160101, Punjab, India
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9
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Aouey B, Boukholda K, Gargouri B, Bhatia HS, Attaai A, Kebieche M, Bouchard M, Fetoui H. Silica Nanoparticles Induce Hepatotoxicity by Triggering Oxidative Damage, Apoptosis, and Bax-Bcl2 Signaling Pathway. Biol Trace Elem Res 2022; 200:1688-1698. [PMID: 34110565 DOI: 10.1007/s12011-021-02774-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 05/28/2021] [Indexed: 01/03/2023]
Abstract
The increase in the usage of silica nanoparticles (SiNPs) in the industrial and medical fields has raised concerns about their possible adverse effects on human health. The present study aimed to investigate the potential adverse effects of SiNPs at daily doses of 25 and 100 mg/kg body weight intraperitoneally (i.p.) for 28 consecutive days on markers of liver damage in adult male rats. Results revealed that SiNPs induced a marked increase in serum markers of liver damage, including lactate dehydrogenase (LDH), alanine aminotransferase (ALAT), and aspartate aminotransferase (ASAT). SiNPs also induced an elevation of reactive oxygen species (ROS) production in liver, along with an increase in oxidative stress markers (NO, MDA, PCO, and H2O2), and a decrease in antioxidant enzyme activities (CAT, SOD, and GPx). Quantitative real-time PCR showed that SiNPs also induced upregulation of pro-apoptotic gene expression (including Bax, p53, Caspase-9/3) and downregulation of anti-apoptotic factors Bcl-2. Moreover, histopathological analysis revealed that SiNPs induced hepatocyte alterations, which was accompanied by sinusoidal dilatation, Kupffer cell hyperplasia, and the presence of inflammatory cells in the liver. Taken together, these data showed that SiNPs trigger hepatic damage through ROS-activated caspase signaling pathway, which plays a fundamental role in SiNP-induced apoptosis in the liver.
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Affiliation(s)
- Bakhta Aouey
- Laboratory of Toxicology-Microbiology and Environmental Health (17ES06), Faculty of Sciences of Sfax, University of Sfax, BP1171, 3000, Sfax, Tunisia
| | - Khadija Boukholda
- Laboratory of Toxicology-Microbiology and Environmental Health (17ES06), Faculty of Sciences of Sfax, University of Sfax, BP1171, 3000, Sfax, Tunisia
| | - Brahim Gargouri
- Laboratory of Toxicology-Microbiology and Environmental Health (17ES06), Faculty of Sciences of Sfax, University of Sfax, BP1171, 3000, Sfax, Tunisia
| | - Harsharan S Bhatia
- Institute for Tissue Engineering and Regenerative Medicine (iTERM), Helmholtz Zentrum München, 85764, Neuherberg, Germany
- Institute for Stroke and Dementia Research, Klinikum Der Universität München, Ludwig Maximilian University of Munich (LMU), 81377, Munich, Germany
| | - Abdelraheim Attaai
- Department of Anatomy and Histology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Mohamed Kebieche
- Laboratory of Cellular and Molecular Biology, University of Mohamed Seddik Ben Yahia, Jijel, Algeria
- Faculty of Natural and Life Sciences, LBMBPC, University of Batna 2, 05078, Fesdis, Batna2, Algeria
| | - Michèle Bouchard
- Department of Environmental and Occupational Health, Chair in Toxicological Risk Assessment and Management, and Public Health Research Center (CReSP), University of Montreal, Roger-Gaudry Building, U424Main Station, P.O. Box 6128, Montreal, Quebec, H3C 3J7, Canada
| | - Hamadi Fetoui
- Laboratory of Toxicology-Microbiology and Environmental Health (17ES06), Faculty of Sciences of Sfax, University of Sfax, BP1171, 3000, Sfax, Tunisia.
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Korolev D, Postnov V, Aleksandrov I, Murin I. The Combination of Solid-State Chemistry and Medicinal Chemistry as the Basis for the Synthesis of Theranostics Platforms. Biomolecules 2021; 11:1544. [PMID: 34680176 PMCID: PMC8534059 DOI: 10.3390/biom11101544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/12/2021] [Accepted: 10/16/2021] [Indexed: 12/15/2022] Open
Abstract
This review presents the main patterns of synthesis for theranostics platforms. We examine various approaches to the interpretation of theranostics, statistics of publications drawn from the PubMed database, and the solid-state and medicinal chemistry methods used for the formation of nanotheranostic objects. We highlight and analyze chemical methods for the modification of nanoparticles, synthesis of spacers with functional end-groups, and the immobilization of medicinal substances and fluorophores. An overview of the modern solutions applied in various fields of medicine is provided, along with an outline of specific examples and an analysis of modern trends and development areas of theranostics as a part of personalized medicine.
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Affiliation(s)
- Dmitry Korolev
- Almazov National Medical Research Centre, Institute of Experimental Medicine, 2 Akkuratova Str., 197341 Saint Petersburg, Russia; (D.K.); (V.P.)
| | - Viktor Postnov
- Almazov National Medical Research Centre, Institute of Experimental Medicine, 2 Akkuratova Str., 197341 Saint Petersburg, Russia; (D.K.); (V.P.)
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Emb., 199034 Saint Petersburg, Russia;
| | - Ilia Aleksandrov
- Almazov National Medical Research Centre, Institute of Experimental Medicine, 2 Akkuratova Str., 197341 Saint Petersburg, Russia; (D.K.); (V.P.)
| | - Igor Murin
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Emb., 199034 Saint Petersburg, Russia;
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11
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Cheong IT, Morrish W, Sheard W, Yu H, Tavares Luppi B, Milburn L, Meldrum A, Veinot JGC. Silicon Quantum Dot-Polymer Fabry-Pérot Resonators with Narrowed and Tunable Emissions. ACS APPLIED MATERIALS & INTERFACES 2021; 13:27149-27158. [PMID: 33983697 DOI: 10.1021/acsami.1c01825] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Luminescent silicon nanoparticles have been widely recognized as an alternative for metal-based quantum dots (QDs) for optoelectronics partly because of the high abundance and biocompatibility of silicon. To date, the broad photoluminescence line width (often >100 nm) of silicon QDs has been a hurdle to achieving competitive spectral purity and incorporating them into light-emitting devices. Herein we report fabrication and testing of straightforward configuration of Fabry-Pérot resonators that incorporates a thin layer of SiQD-polymer hybrid/blend between two reflective silver mirrors; remarkably these devices exhibit up-to-14-fold narrowing of SiQD emission and achieve a spectral bandwidth as narrow as ca. 9 nm. Our polymer-based, SiQD-containing Fabry-Pérot resonators also provide convenient spectral tunability, can be prepared using a variety of polymer hosts and substrates, and enable rigid as well as flexible devices.
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Affiliation(s)
- I Teng Cheong
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - William Morrish
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - William Sheard
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Haoyang Yu
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Bruno Tavares Luppi
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Leanne Milburn
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Alkiviathes Meldrum
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Jonathan G C Veinot
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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12
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Silicon dioxide nanoparticles induced neurobehavioral impairments by disrupting microbiota-gut-brain axis. J Nanobiotechnology 2021; 19:174. [PMID: 34112173 PMCID: PMC8194163 DOI: 10.1186/s12951-021-00916-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 05/28/2021] [Indexed: 12/19/2022] Open
Abstract
Background Silicon dioxide nanoparticles (SiO2NPs) are widely used as additive in the food industry with controversial health risk. Gut microbiota is a new and hot topic in the field of nanotoxicity. It also contributes a novel and insightful view to understand the potential health risk of food-grade SiO2NPs in children, who are susceptible to the toxic effects of nanoparticles. Methods In current study, the young mice were orally administrated with vehicle or SiO2NPs solution for 28 days. The effects of SiO2NPs on the gut microbiota were detected by 16S ribosomal RNA (rRNA) gene sequencing, and the neurobehavioral functions were evaluated by open field test and Morris water maze. The level of inflammation, tissue integrity of gut and the classical indicators involved in gut–brain, gut–liver and gut–lung axis were all assessed. Results Our results demonstrated that SiO2NPs significantly caused the spatial learning and memory impairments and locomotor inhibition. Although SiO2NPs did not trigger evident intestinal or neuronal inflammation, they remarkably damaged the tissue integrity. The microbial diversity within the gut was unexpectedly enhanced in SiO2NPs-treated mice, mainly manifested by the increased abundances of Firmicutes and Patescibacteria. Intriguingly, we demonstrated for the first time that the neurobehavioral impairments and brain damages induced by SiO2NPs might be distinctively associated with the disruption of gut–brain axis by specific chemical substances originated from gut, such as Vipr1 and Sstr2. Unapparent changes in liver or lung tissues further suggested the absence of gut–liver axis or gut–lung axis regulation upon oral SiO2NPs exposure. Conclusion This study provides a novel idea that the SiO2NPs induced neurotoxic effects may occur through distinctive gut–brain axis, showing no significant impact on either gut–lung axis or gut–liver axis. These findings raise the exciting prospect that maintenance and coordination of gastrointestinal functions may be critical for protection against the neurotoxicity of infant foodborne SiO2NPs. ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-021-00916-2.
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Robidillo CJT, Veinot JGC. Functional Bio-inorganic Hybrids from Silicon Quantum Dots and Biological Molecules. ACS APPLIED MATERIALS & INTERFACES 2020; 12:52251-52270. [PMID: 33155802 DOI: 10.1021/acsami.0c14199] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Quantum dots (QDs) are semiconductor nanoparticles that exhibit photoluminescent properties useful for applications in the field of diagnostics and medicine. Successful implementation of these QDs for bio-imaging and bio/chemical sensing typically involves conjugation to biologically active molecules for recognition and signal generation. Unfortunately, traditional and widely studied QDs are based upon heavy metals and other toxic elements (e.g., Cd- and Pb-based QDs), which precludes their safe use in actual biological systems. Silicon quantum dots (SiQDs) offer the same advantages as these heavy-metal-based QDs with the added benefits of nontoxicity and abundance. The preparation of functional bio-inorganic hybrids from SiQDs and biomolecules has lagged significantly compared to their traditional toxic counterparts because of the challenges associated with the synthesis of water-soluble SiQDs and their relative instability in aqueous environments. Advances in SiQD synthesis and surface functionalization, however, have made possible the preparation of functional bio-inorganic hybrids from SiQDs and biological molecules through different bioconjugation reactions. In this contribution, we review the various bioconjugate reactions by which SiQDs have been linked to biomolecules and implemented as platforms for bio-imaging and bio/chemical sensing. We also highlight the challenges that need to be addressed and overcome for these materials to reach their full potential. Lastly, we give prospective applications where this unique class of nontoxic and biocompatible materials can be of great utility in the future.
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Affiliation(s)
- Christopher Jay T Robidillo
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
- Department of Physical Sciences and Mathematics, University of the Philippines Manila, Ermita, Manila 1000, Philippines
| | - Jonathan G C Veinot
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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Nanostructured Biosilica of Diatoms: From Water World to Biomedical Applications. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10196811] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Diatoms—unicellular photosynthetic algae—are promising natural sources of nanostructured silica. These microorganisms produce in their membrane approximately a highly ordered porous cell wall called a frustule as protection from environmental stress. Diatom frustules consist of hydrated silica that show peculiar properties including biocompatibility, tailorable surface chemistry, chemical inertness, and thermal stability. Frustules harvested from aquatic ecosystems or diatomaceous fossil sediments represent an excellent cost-effective source of biosilica for a broad range of biomedical applications. The porous ultrastructure of the frustules displays a large surface area available for coating with various biomolecules through different functionalization methods. In this review article, we highlight the main features of diatom biosilica and present some of the most advantageous properties that support the employment of frustules in the field of drug delivery, biosensing, and regenerative medicine. In particular, it is offered an insight into the most common functionalization strategies through which diatom physicochemical properties can be modified and tailored according to the described field of application.
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Mohammadpour R, Cheney DL, Grunberger JW, Yazdimamaghani M, Jedrzkiewicz J, Isaacson KJ, Dobrovolskaia MA, Ghandehari H. One-year chronic toxicity evaluation of single dose intravenously administered silica nanoparticles in mice and their Ex vivo human hemocompatibility. J Control Release 2020; 324:471-481. [PMID: 32464151 PMCID: PMC7429347 DOI: 10.1016/j.jconrel.2020.05.027] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 05/14/2020] [Accepted: 05/16/2020] [Indexed: 02/06/2023]
Abstract
Chronic toxicity evaluations of nanotechnology-based drugs are essential to support initiation of clinical trials. Ideally such evaluations should address the dosing strategy in human applications and provide sufficient information for long-term usage. Herein, we investigated one-year toxicity of non-surface modified silica nanoparticles (SNPs) with variations in size and porosity (Stöber SNPs 46 ± 4.9 and 432.0 ± 18.7 nm and mesoporous SNPs 466.0 ± 86.0 nm) upon single dose intravenous administration to female and male BALB/c mice (10 animal/sex/group) along with their human blood compatibility. Our evidence of clinical observation and blood parameters showed no significant changes in body weight, cell blood count, nor plasma biomarker indices. No significant changes were noted in post necropsy examination of internal organs and organ-to-body weight ratio. However, microscopic examination revealed significant amount of liver inflammation and aggregates of histocytes with neutrophils within the spleen suggesting an ongoing or resolving injury. The fast accumulation of these plain SNPs in the liver and spleen upon IV administration and the duration needed for their clearance caused these injuries. There were also subtle changes which were attributed to prior infarctions or resolved intravascular thrombosis and included calcifications in pulmonary vessels, focal cardiac fibrosis with calcifications, and focal renal injury. Most of the pathologic lesions were observed when large, non-porous SNPs were administered. Statistically significant chronic toxicity was not observed for the small non-porous particles and for the mesoporous particles. This one-year post-exposure evaluation indicate that female and male BALB/c mice need up to one year to recover from acute tissue toxic effects of silica nanoparticles upon single dose intravenous administration at their 10-day maximum tolerated dose. Further, ex vivo testing with human blood and plasma revealed no hemolysis or complement activation following incubation with these silica nanoparticles. These results can inform the potential utility of silica nanoparticles in biomedical applications such as controlled drug delivery where intravenous injection of the particles is intended.
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Affiliation(s)
- Raziye Mohammadpour
- Utah Center for Nanomedicine, Nano Institute of Utah, and University of Utah, Salt Lake City, Utah, United States
| | - Darwin L Cheney
- Utah Center for Nanomedicine, Nano Institute of Utah, and University of Utah, Salt Lake City, Utah, United States
| | - Jason W Grunberger
- Utah Center for Nanomedicine, Nano Institute of Utah, and University of Utah, Salt Lake City, Utah, United States; Department of Pharmaceutics and Pharmaceutical Chemistry, Nano Institute of Utah, and University of Utah, Salt Lake City, Utah, United States
| | - Mostafa Yazdimamaghani
- Utah Center for Nanomedicine, Nano Institute of Utah, and University of Utah, Salt Lake City, Utah, United States; Department of Pharmaceutics and Pharmaceutical Chemistry, Nano Institute of Utah, and University of Utah, Salt Lake City, Utah, United States
| | - Jolanta Jedrzkiewicz
- Department of Pathology, Nano Institute of Utah, and University of Utah, Salt Lake City, Utah, United States
| | - Kyle J Isaacson
- Utah Center for Nanomedicine, Nano Institute of Utah, and University of Utah, Salt Lake City, Utah, United States; Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah, United States
| | - Marina A Dobrovolskaia
- Nanotechnology Characterization Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Frederick, MD, United States
| | - Hamidreza Ghandehari
- Utah Center for Nanomedicine, Nano Institute of Utah, and University of Utah, Salt Lake City, Utah, United States; Department of Pharmaceutics and Pharmaceutical Chemistry, Nano Institute of Utah, and University of Utah, Salt Lake City, Utah, United States; Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah, United States.
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Novoselova MV, Loh HM, Trushina DB, Ketkar A, Abakumova TO, Zatsepin TS, Kakran M, Brzozowska AM, Lau HH, Gorin DA, Antipina MN, Brichkina AI. Biodegradable Polymeric Multilayer Capsules for Therapy of Lung Cancer. ACS APPLIED MATERIALS & INTERFACES 2020; 12:5610-5623. [PMID: 31942802 DOI: 10.1021/acsami.9b21381] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Formulated forms of cancer therapeutics enhance the efficacy of treatment by more precise targeting, increased bioavailability of drugs, and an aptitude of some delivery systems to overcome multiple drug resistance of tumors. Drug carriers acquire importance for anti-cancer interventions via targeting tumor-associated macrophages with active molecules capable to either eliminate them or change their polarity. Although several packaged drug forms have reached the market, there is still a high demand for novel carrier systems to hurdle limitations of existing drugs on active molecules, toxicity, bioeffect, and stability. Here, we report a facile assembly and delivery methodology for biodegradable polymeric multilayer capsules (PMC) with the purpose of further use in injectable drug formulations for lung cancer therapy via direct erosion of tumors and suppression of the tumor-promoting function of macrophages in the tumor microenvironment. We demonstrate delivery of low-molecular-weight drug molecules to lung cancer cells and macrophages and provide details on in vivo distribution, cellular uptake, and disintegration of the developed PMC. Poly-l-arginine and dextran sulfate alternately adsorb on a ∼500 nm CaCO3 sacrificial template followed by removal of the inorganic core to obtain hollow capsules for consequent loading with drug molecules, gemcitabine or clodronate. The capsules further compacted upon loading down to ∼250 nm in diameter via heat treatment. A comparative study of the capsule internalization rate in vitro and in vivo reveals the benefits of a diminished carrier size. We show that macrophages and epithelial cells of the lungs and liver internalize capsules with efficacy higher than 75%. Using an in vivo mouse model of lung cancer, we also confirm that tumor lungs better retain smaller capsules than the healthy lung tissue. The pronounced cytotoxic effect of the encapsulated gemcitabine on lung cancer cells and the ability of the encapsulated clodronate to block the tumor-promoting function of macrophages prove the efficacy of the developed capsule loading method in vitro. Our study taken as a whole demonstrates the great potential of the developed PMC for in vivo treatment of cancer via transporting active molecules, including those that are water-soluble with low molecular weight, to both cancer cells and macrophages through the bloodstream.
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Affiliation(s)
- Marina V Novoselova
- Institute of Materials Research and Engineering, A*STAR , 2 Fusionopolis Way , Innovis, #08-03, Singapore , 138634 , Singapore
- Skolkovo Institute of Science and Technology , Bolshoy Boulevard 30, bld. 1 , Moscow 121205 , Russia
| | - Hui Mun Loh
- Institute of Molecular and Cell Biology, A*STAR , 61 Biopolis Drive , Proteos, Singapore 138673 , Singapore
| | - Daria B Trushina
- Institute of Materials Research and Engineering, A*STAR , 2 Fusionopolis Way , Innovis, #08-03, Singapore , 138634 , Singapore
- I.M. Sechenov First Moscow State Medical University , Bol'shaya Pirogovskaya Ulitsa 19c1 Moscow 119146 , Russia
- A.V. Shubnikov Institute of Crystallography of Federal Scientific Research Centre "Crystallography and Photonics" of Russian Academy of Sciences , Leninskiy Prospekt, 59 , Moscow 119333 , Russia
| | - Avanee Ketkar
- Institute of Molecular Oncology , Philipps University of Marburg , member of the German Center for Lung Research (DZL), Hans-Meerwein-Str. 3 35043 Marburg , Germany
| | - Tatiana O Abakumova
- Skolkovo Institute of Science and Technology , Bolshoy Boulevard 30, bld. 1 , Moscow 121205 , Russia
| | - Timofei S Zatsepin
- Skolkovo Institute of Science and Technology , Bolshoy Boulevard 30, bld. 1 , Moscow 121205 , Russia
| | - Mitali Kakran
- Institute of Materials Research and Engineering, A*STAR , 2 Fusionopolis Way , Innovis, #08-03, Singapore , 138634 , Singapore
| | - Agata Maria Brzozowska
- Institute of Materials Research and Engineering, A*STAR , 2 Fusionopolis Way , Innovis, #08-03, Singapore , 138634 , Singapore
| | - Hooi Hong Lau
- Institute of Materials Research and Engineering, A*STAR , 2 Fusionopolis Way , Innovis, #08-03, Singapore , 138634 , Singapore
| | - Dmitry A Gorin
- Skolkovo Institute of Science and Technology , Bolshoy Boulevard 30, bld. 1 , Moscow 121205 , Russia
| | - Maria N Antipina
- Institute of Materials Research and Engineering, A*STAR , 2 Fusionopolis Way , Innovis, #08-03, Singapore , 138634 , Singapore
| | - Anna I Brichkina
- Institute of Molecular and Cell Biology, A*STAR , 61 Biopolis Drive , Proteos, Singapore 138673 , Singapore
- Institute of Molecular Oncology , Philipps University of Marburg , member of the German Center for Lung Research (DZL), Hans-Meerwein-Str. 3 35043 Marburg , Germany
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Cornu R, Béduneau A, Martin H. Influence of nanoparticles on liver tissue and hepatic functions: A review. Toxicology 2019; 430:152344. [PMID: 31843632 DOI: 10.1016/j.tox.2019.152344] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/14/2019] [Accepted: 12/12/2019] [Indexed: 12/16/2022]
Abstract
Due to the increasing interest in nanotechnology in very large application fields, including biotechnology, electronics and food industries, humans are increasingly exposed to nanoparticles (NPs). Consequently, the question about the safety of these nanomaterials and their impact on human health is a legitimate concern. The liver is the primary organ of detoxification and is one of the tissues that is most exposed to NPs. When they reach the bloodstream, NPs are mainly internalized by liver cells. This review focuses on recent in vitro and in vivo studies addressing the effects of organic and inorganic NPs on the liver. Specifically, the impact of the NPs on hepatic enzyme activities, the inflammatory response and genotoxicity processes will be described. Depending on the physicochemical parameters of the NPs and the conditions of exposure, NPs could lead to global liver injury.
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Affiliation(s)
- Raphaël Cornu
- PEPITE EA4267, Univ. Bourgogne Franche-Comté, F-25000 Besançon, France.
| | - Arnaud Béduneau
- PEPITE EA4267, Univ. Bourgogne Franche-Comté, F-25000 Besançon, France.
| | - Hélène Martin
- PEPITE EA4267, Univ. Bourgogne Franche-Comté, F-25000 Besançon, France.
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Leso V, Fontana L, Ercolano ML, Romano R, Iavicoli I. Opportunities and challenging issues of nanomaterials in otological fields: an occupational health perspective. Nanomedicine (Lond) 2019; 14:2613-2629. [PMID: 31609676 DOI: 10.2217/nnm-2019-0114] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Nanotechnology may offer innovative solutions to overcome the physiological and anatomical barriers that make the diagnosis and treatment of ear diseases an extremely challenging issue. However, despite the solutions provided by nano-applications, the still little-known toxicological behavior of nanomaterials raised scientific concerns regarding their biosafety for treated patients and exposed workers. Therefore, this review provides an overview on recent developments and upcoming opportunities in nanoscale otological applications, and critically assesses possible adverse effects of nanosized compounds on ear structures and hearing functionality. Although such preliminary data do not allow to draw definite strategies for the evaluation of nanomaterial ototoxicity, they can still be useful to improve scientific community and workforce awareness regarding possible nanomaterial adverse effects on ear.
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Affiliation(s)
- Veruscka Leso
- Department of Public Health, Section of Occupational Medicine, University of Naples Federico II, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Luca Fontana
- Department of Occupational & Environmental Medicine, Epidemiology & Hygiene, Italian Workers' Compensation Authority (INAIL), Via di Fontana Candida 1, 00040 Monte Porzio Catone, Rome, Italy
| | - Maria Luigia Ercolano
- Department of Public Health, Section of Occupational Medicine, University of Naples Federico II, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Rosaria Romano
- Department of Public Health, Section of Occupational Medicine, University of Naples Federico II, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Ivo Iavicoli
- Department of Public Health, Section of Occupational Medicine, University of Naples Federico II, Via Sergio Pansini 5, 80131 Naples, Italy
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Paris JL, Baeza A, Vallet-Regí M. Overcoming the stability, toxicity, and biodegradation challenges of tumor stimuli-responsive inorganic nanoparticles for delivery of cancer therapeutics. Expert Opin Drug Deliv 2019; 16:1095-1112. [DOI: 10.1080/17425247.2019.1662786] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Juan L. Paris
- Department of Life Sciences, Nano4Health Unit, Nanomedicine Group. International Iberian Nanotechnology Laboratory (INL). Av. Mestre José Veiga s/n, Braga, Portugal
| | - Alejandro Baeza
- Materials and Aeroespatial Production Department, Polymer Materials Research Group, Madrid, Spain
| | - María Vallet-Regí
- Dpto. Química en Ciencias Farmacéuticas (Unidad Docente de Química Inorgánica y Bioinorgánica), Facultad de Farmacia, UCM, Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain
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20
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Mohammadpour R, Yazdimamaghani M, Cheney DL, Jedrzkiewicz J, Ghandehari H. Subchronic toxicity of silica nanoparticles as a function of size and porosity. J Control Release 2019; 304:216-232. [PMID: 31047961 PMCID: PMC6681828 DOI: 10.1016/j.jconrel.2019.04.041] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 04/20/2019] [Accepted: 04/28/2019] [Indexed: 12/15/2022]
Abstract
Despite increasing reports of using silica nanoparticles (SNPs) for controlled drug delivery applications, their long-term toxicity profile following intravenous administration remains unexplored. Herein, we investigated the acute (10-day) and subchronic (60-day and 180-day) toxicity of nonporous SNPs of approximately 50 nm (Stöber SNPs50) and approximately 500 nm in diameter (Stöber SNPs500), and mesoporous SNPs of approximately 500 nm in diameter (MSNPs500) upon single-dose intravenous injection into male and female immune-competent inbred BALB/c mice. The Maximum Tolerated Dose (MTD) of the particles was determined 10 days post-injection. The MTD of SNPs was administered and toxicity evaluated over 60 and 180 days. Results demonstrate that Stöber SNPs50 exhibit systemic toxicity with MTD of 103 ± 11 mg.kg-1 for female and 100 ± 6 mg.kg-1 for male mice, respectively. Toxicity was alleviated by increasing the size of the particles (Stöber SNPs500). MTD values of 303 ± 4 mg.kg-1 for female and 300 ± 13 mg.kg-1 for male were observed for Stöber SNPs500. Mesoporous SNPs500 showed considerable systemic sex-related toxicity, with MTDs ranging from 40 ± 2 mg.kg-1 to 95 ± 2 mg.kg-1 for male and female mice, respectively. Studies of SNPs showed blood toxicity as a function of physiochemical properties such as significant differences in the mean corpuscular hemoglobin (MCHC) and platelet number at day 10 and white blood cell count at day 60. Histological examination also showed size-, porosity- and time-dependent tissue toxicity. Stöber SNPs500 caused major toxic effects such as lung thrombosis, cardiac wall fibrosis and calcifications, brain infarctions with necrotizing inflammatory response, infiltrate, retinal injuries with calcification and focal gliosis, renal parenchymal damage and liver lobular inflammation dependent on the dose and time of exposure. However, tissue toxicity and accumulation of SNPs in liver observed at day 10 was greater than at day 60 and much greater than at day 180. In contrast, a dramatic increase in cytokine levels was observed at day 60. Despite the relatively high doses, SNPs did not cause subchronic toxicity at day 180 after single-dose intravenous injection. However, they showed distinct differences in the 60 day in vivo subchronic toxicity and inflammation profile as a function of surface area and size.
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Affiliation(s)
- Raziye Mohammadpour
- Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, UT, United States
| | - Mostafa Yazdimamaghani
- Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, UT, United States; Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, United States
| | - Darwin L Cheney
- Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, UT, United States
| | | | - Hamidreza Ghandehari
- Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, UT, United States; Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, United States; Department of Bioengineering, University of Utah, Salt Lake City, UT, United States.
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Submicron-Sized Nanocomposite Magnetic-Sensitive Carriers: Controllable Organ Distribution and Biological Effects. Polymers (Basel) 2019; 11:polym11061082. [PMID: 31242626 PMCID: PMC6630964 DOI: 10.3390/polym11061082] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/17/2019] [Accepted: 06/21/2019] [Indexed: 12/16/2022] Open
Abstract
Although new drug delivery systems have been intensely developed in the past decade, no significant increase in the efficiency of drug delivery by nanostructure carriers has been achieved. The reasons are the lack of information about acute toxicity, the influence of the submicron size of the carrier and difficulties with the study of biodistribution in vivo. Here we propose, for the first time in vivo, new nanocomposite submicron carriers made of bovine serum albumin (BSA) and tannic acid (TA) and containing magnetite nanoparticles with sufficient content for navigation in a magnetic field gradient on mice. We examined the efficacy of these submicron carriers as a delivery vehicle in combination with magnetite nanoparticles which were systemically administered intravenously. In addition, the systemic toxicity of this carrier for intravenous administration was explicitly studied. The results showed that (BSA/TA) carriers in the given doses were hemocompatible and didn’t cause any adverse effect on the respiratory system, kidney or liver functions. A combination of gradient-magnetic-field controllable biodistribution of submicron carriers with fluorescence tomography/MRI imaging in vivo provides a new opportunity to improve drug delivery efficiency.
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Mohammadpour R, Dobrovolskaia MA, Cheney DL, Greish KF, Ghandehari H. Subchronic and chronic toxicity evaluation of inorganic nanoparticles for delivery applications. Adv Drug Deliv Rev 2019; 144:112-132. [PMID: 31295521 PMCID: PMC6745262 DOI: 10.1016/j.addr.2019.07.006] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 07/02/2019] [Accepted: 07/04/2019] [Indexed: 12/31/2022]
Abstract
Inorganic nanoparticles provide the opportunity to localize bioactive agents to the target sites and protect them from degradation. In many cases, acute toxicities of inorganic nanoparticles used for delivery applications have been investigated. However, little information is available regarding the long-term toxicity of such materials. This review focuses on the importance of subchronic and chronic toxicity assessment of inorganic nanoparticles investigated for delivery applications. We have attempted to provide a comprehensive review of the available literature for chronic toxicity assessment of inorganic nanoparticles. Where possible correlations are made between particle composition, physiochemical properties, duration, frequency and route of administration, as well as the sex of animals, with tissue and blood toxicity, immunotoxicity and genotoxicity. A critical gap analysis is provided and important factors that need to be considered for long-term toxicology of inorganic nanoparticles are discussed.
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Affiliation(s)
- Raziye Mohammadpour
- Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, Utah, USA
| | - Marina A Dobrovolskaia
- Nanotechnology Characterization Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Frederick, Maryland, USA
| | - Darwin L Cheney
- Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, Utah, USA
| | - Khaled F Greish
- Department of Molecular Medicine, College of Medicine and Medical Sciences, Arabian Gulf University, Manama 329, Bahrain; Nanomedicine Research Unit, Princess Al-Jawhara Centre for Molecular Medicine and Inherited Disorders, Arabian Gulf University, Manama 329, Bahrain
| | - Hamidreza Ghandehari
- Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, Utah, USA; Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah, USA; Department of Bioengineering, University of Utah, Salt Lake City, Utah, USA.
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Manipulating hemoglobin oxygenation using silica nanoparticles: a novel prospect for artificial oxygen carriers. Blood Adv 2019; 2:90-94. [PMID: 29365316 DOI: 10.1182/bloodadvances.2017012153] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 12/14/2017] [Indexed: 12/23/2022] Open
Abstract
Recently, nanoparticles have attracted much attention as new scaffolds for hemoglobin-based oxygen carriers (HBOCs). Indeed, the development of bionanotechnology paves the way for the rational design of blood substitutes, providing that the interaction between the nanoparticles and hemoglobin at a molecular scale and its effect on the oxygenation properties of hemoglobin are finely controlled. Here, we show that human hemoglobin has a high affinity for silica nanoparticles, leading to the adsorption of hemoglobin tetramers on the surface. The adsorption process results in a remarkable retaining of the oxygenation properties of human adult hemoglobin and sickle cell hemoglobin, associated with an increase of the oxygen affinity. The cooperative oxygen binding exhibited by adsorbed hemoglobin and the comparison with the oxygenation properties of diaspirin cross-linked hemoglobin confirmed the preservation of the tetrameric structure of hemoglobin loaded on silica nanoparticles. Our results show that silica nanoparticles can act as an effector for human native and mutant hemoglobin. Manipulating hemoglobin oxygenation using nanoparticles opens the way to the design of novel HBOCs.
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Hossen S, Hossain MK, Basher M, Mia M, Rahman M, Uddin MJ. Smart nanocarrier-based drug delivery systems for cancer therapy and toxicity studies: A review. J Adv Res 2019; 15:1-18. [PMID: 30581608 PMCID: PMC6300464 DOI: 10.1016/j.jare.2018.06.005] [Citation(s) in RCA: 503] [Impact Index Per Article: 100.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 06/21/2018] [Accepted: 06/23/2018] [Indexed: 02/06/2023] Open
Abstract
Nonspecific distribution and uncontrollable release of drugs in conventional drug delivery systems (CDDSs) have led to the development of smart nanocarrier-based drug delivery systems, which are also known as Smart Drug Delivery Systems (SDDSs). SDDSs can deliver drugs to the target sites with reduced dosage frequency and in a spatially controlled manner to mitigate the side effects experienced in CDDSs. Chemotherapy is widely used to treat cancer, which is the second leading cause of death worldwide. Site-specific drug delivery led to a keen interest in the SDDSs as an alternative to chemotherapy. Smart nanocarriers, nanoparticles used to carry drugs, are at the focus of SDDSs. A smart drug delivery system consists of smart nanocarriers, targeting mechanisms, and stimulus techniques. This review highlights the recent development of SDDSs for a number of smart nanocarriers, including liposomes, micelles, dendrimers, meso-porous silica nanoparticles, gold nanoparticles, super paramagnetic iron-oxide nanoparticles, carbon nanotubes, and quantum dots. The nanocarriers are described in terms of their structures, classification, synthesis and degree of smartness. Even though SDDSs feature a number of advantages over chemotherapy, there are major concerns about the toxicity of smart nanocarriers; therefore, a substantial study on the toxicity and biocompatibility of the nanocarriers has been reported. Finally, the challenges and future research scope in the field of SDDSs are also presented. It is expected that this review will be widely useful for those who have been seeking new research directions in this field and for those who are about to start their studies in smart nanocarrier-based drug delivery.
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Affiliation(s)
- Sarwar Hossen
- Department of Physics, Khulna Govt. Mahila College, National University, Gazipur 1704, Bangladesh
| | - M. Khalid Hossain
- Institute of Electronics, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Dhaka 1349, Bangladesh
| | - M.K. Basher
- Institute of Electronics, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Dhaka 1349, Bangladesh
| | - M.N.H. Mia
- Institute of Electronics, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Dhaka 1349, Bangladesh
| | - M.T. Rahman
- Department of Materials Science and Engineering, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - M. Jalal Uddin
- Department of Radio Sciences and Engineering, KwangWoon University, Seoul 01897, Republic of Korea
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Salem A, Oudhabechi A, Sakly M. Effect of nano-sized SiO 2 particles on the cognitive function and biochemical response. ARCHIVES OF ENVIRONMENTAL & OCCUPATIONAL HEALTH 2018; 74:140-146. [PMID: 29920170 DOI: 10.1080/19338244.2018.1489365] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 06/12/2018] [Indexed: 06/08/2023]
Abstract
Several in vitro studies have convincingly demonstrated that SiO2NPs mediated cytotoxicity, which was dose-, time- and size-dependent. The data on in vivo toxicity of SiO2NPs are even more contradictory. In the present study, we investigated the effects of sub-acute exposure to SiO2-NPs on spatial learning and memory, the biochemical parameters and the histology of organs. Rats were injected intravenously with a single dose of SiO2-NPs (20 mg/kg) during five consecutive days. The analysis of spatial memory in the Morris water maze showed that SiO2-NPs disrupt the cognitive abilities of rats. Moreover, SiO2-NPs could changes the blood counts. However, biochemical markers remained unchanged. Histological examination showed that SiO2-NPs induced pathological changes in rat organs. In this finding NPs were shown to cause granuloma formation and inflammatory cells infiltration in the liver.
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Affiliation(s)
- Amara Salem
- a Laboratory of Integrated Physiology, Faculty of Science of Bizerte , Carthage University , Zarzouna, Tunisia
- b Department of Biology, Faculty of Education in Afif , Shaqra University , Afif, Kingdom of Saudi Arabia
| | - Amal Oudhabechi
- a Laboratory of Integrated Physiology, Faculty of Science of Bizerte , Carthage University , Zarzouna, Tunisia
| | - Mohsen Sakly
- a Laboratory of Integrated Physiology, Faculty of Science of Bizerte , Carthage University , Zarzouna, Tunisia
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Zhang Y, Chen X, Zhao B, Wu H, Yuan L, Zhang H, Dai W, He B, Xing G, Zhang Q, Wang X. Biosafety study and mechanism comparison on two types of silica with different nanostructures. Toxicol Res (Camb) 2017; 6:487-498. [PMID: 30090517 PMCID: PMC6062300 DOI: 10.1039/c7tx00076f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 04/21/2017] [Indexed: 11/21/2022] Open
Abstract
Silica is frequently used in oral drug delivery; however, its biosafety, particularly concerned with its nanostructure, has not been comprehensively studied yet. Here, the in vitro and in vivo biosafety of two types of silica (A200, nano-sized or micron-sized agglomerates; S350, micro-sized particles with nanopores) were compared and the possible reasons for the differences were explored. The results indicated that both A200 and S350 could inhibit the growth of Caco-2 cells by inducing apoptosis and changing the cell cycle progression. A200 showed a stronger influence than S350 in most of the in vitro experiments. In the in vivo study in KM mice, both A200 and S350 could change the blood constituents under the tested conditions; A200 also increased the levels of inflammatory factors in plasma and the numbers of CD4+ lymphocyte subsets. No obvious organic damage was observed in either the A200-treated or S350-treated groups. The transport study showed that neither A200 nor S350 were readily transported across the intestinal epithelial barrier in vitro and in vivo, but A200 could transport across the lymphatic-associated epithelium and accumulate in the Peyer's Patches, which might explain the A200-induced immune response. The increased transport of A200 might relate to its particle size, dispersion state and specific surface area. In conclusion, these results demonstrated that A200 and S350 exhibited diverse biosafety aspects, which correlated with their different nanostructures. We believe this study will provide some scientific information about the biosafety of A200 and S350 for their applications in oral drug delivery systems.
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Affiliation(s)
- Yang Zhang
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences , Peking University , Beijing 100191 , China . ; Tel: +86-10-82805935
| | - Xianhui Chen
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences , Peking University , Beijing 100191 , China . ; Tel: +86-10-82805935
| | - Bo Zhao
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences , Peking University , Beijing 100191 , China . ; Tel: +86-10-82805935
| | - Hounan Wu
- Medical and Healthy Analytical Center , Peking University , Beijing 100191 , China
| | - Lan Yuan
- Medical and Healthy Analytical Center , Peking University , Beijing 100191 , China
| | - Hua Zhang
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences , Peking University , Beijing 100191 , China . ; Tel: +86-10-82805935
| | - Wenbing Dai
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences , Peking University , Beijing 100191 , China . ; Tel: +86-10-82805935
| | - Bing He
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences , Peking University , Beijing 100191 , China . ; Tel: +86-10-82805935
| | - Gengmei Xing
- CAS Key Laboratory for Biomedical Effects of Nanomaterial & Nanosafety , Institute of High Energy Physics , Chinese Academy of Science (CAS) , Beijing 100049 , China
| | - Qiang Zhang
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences , Peking University , Beijing 100191 , China . ; Tel: +86-10-82805935
- State Key Laboratory of Natural and Biomimetic Drugs , Peking University , Beijing 100191 , China
| | - Xueqing Wang
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences , Peking University , Beijing 100191 , China . ; Tel: +86-10-82805935
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Sayed E, Haj-Ahmad R, Ruparelia K, Arshad MS, Chang MW, Ahmad Z. Porous Inorganic Drug Delivery Systems-a Review. AAPS PharmSciTech 2017; 18:1507-1525. [PMID: 28247293 DOI: 10.1208/s12249-017-0740-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 02/08/2017] [Indexed: 11/30/2022] Open
Abstract
Innovative methods and materials have been developed to overcome limitations associated with current drug delivery systems. Significant developments have led to the use of a variety of materials (as excipients) such as inorganic and metallic structures, marking a transition from conventional polymers. Inorganic materials, especially those possessing significant porosity, are emerging as good candidates for the delivery of a range of drugs (antibiotics, anticancer and anti-inflammatories), providing several advantages in formulation and engineering (encapsulation of drug in amorphous form, controlled delivery and improved targeting). This review focuses on key selected developments in porous drug delivery systems. The review provides a short broad overview of porous polymeric materials for drug delivery before focusing on porous inorganic materials (e.g. Santa Barbara Amorphous (SBA) and Mobil Composition of Matter (MCM)) and their utilisation in drug dosage form development. Methods for their preparation and drug loading thereafter are detailed. Several examples of porous inorganic materials, drugs used and outcomes are discussed providing the reader with an understanding of advances in the field and realistic opportunities.
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Nanaki S, Tseklima M, Terzopoulou Z, Nerantzaki M, Giliopoulos DJ, Triantafyllidis K, Kostoglou M, Bikiaris DN. Use of mesoporous cellular foam (MCF) in preparation of polymeric microspheres for long acting injectable release formulations of paliperidone antipsychotic drug. Eur J Pharm Biopharm 2017; 117:77-90. [PMID: 28389342 DOI: 10.1016/j.ejpb.2017.03.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 03/10/2017] [Accepted: 03/14/2017] [Indexed: 12/12/2022]
Abstract
In this study, high surface area mesoporous silica foam with cellular pore morphology (MCF) was used for injectable delivery of paliperidone, an antipsychotic drug used in patients suffering from bipolar disorder. The aim was to enhance paliperidone solubility and simultaneously to prepare long active intractable microspheres. For this reason paliperidone was first loaded in MCF silica, and the whole system was further encapsulated into PLA and PLGA 75/25w/w copolymer in the form of microspheres. It was found that paliperidone, after its adsorption into MCF, was transformed in its amorphous state, thus leading to enhanced in vitro dissolution profile. Furthermore, incorporation of the drug-loaded MCF to polymeric microparticles (PLA and PLGA) prolonged the release time of paliperidone from 10 to 15days.
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Affiliation(s)
- Stavroula Nanaki
- Laboratory of Polymer Chemistry and Technology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Macedonia, Greece
| | - Maria Tseklima
- Laboratory of Polymer Chemistry and Technology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Macedonia, Greece
| | - Zoe Terzopoulou
- Laboratory of Polymer Chemistry and Technology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Macedonia, Greece
| | - Maria Nerantzaki
- Laboratory of Polymer Chemistry and Technology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Macedonia, Greece
| | - Dimitrios J Giliopoulos
- Laboratory of General and Inorganic Chemical Technology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Macedonia, Greece
| | - Konstantinos Triantafyllidis
- Laboratory of General and Inorganic Chemical Technology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Macedonia, Greece
| | - Margaritis Kostoglou
- Laboratory of General and Inorganic Chemical Technology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Macedonia, Greece
| | - Dimitrios N Bikiaris
- Laboratory of Polymer Chemistry and Technology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Macedonia, Greece.
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Fruijtier-Pölloth C. The safety of nanostructured synthetic amorphous silica (SAS) as a food additive (E 551). Arch Toxicol 2016; 90:2885-2916. [PMID: 27699444 PMCID: PMC5104814 DOI: 10.1007/s00204-016-1850-4] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 09/08/2016] [Indexed: 11/30/2022]
Abstract
KEY MESSAGES Particle sizes of E 551 products are in the micrometre range. The typical external diameters of the constituent particles (aggregates) are greater than 100 nm. E 551 does not break down under acidic conditions such as in the stomach, but may release dissolved silica in environments with higher pH such as the intestinal tract. E 551 is one of the toxicologically most intensively studied substances and has not shown any relevant systemic or local toxicity after oral exposure. Synthetic amorphous silica (SAS) meeting the specifications for use as a food additive (E 551) is and has always been produced by the same two production methods: the thermal and the wet processes, resulting in E 551 products consisting of particles typically in the micrometre size range. The constituent particles (aggregates) are typically larger than 100 nm and do not contain discernible primary particles. Particle sizes above 100 nm are necessary for E 551 to fulfil its technical function as spacer between food particles, thus avoiding the caking of food particles. Based on an in-depth review of the available toxicological information and intake data, it is concluded that the SAS products specified for use as food additive E 551 do not cause adverse effects in oral repeated-dose studies including doses that exceed current OECD guideline recommendations. In particular, there is no evidence for liver toxicity after oral intake. No adverse effects have been found in oral fertility and developmental toxicity studies, nor are there any indications from in vivo studies for an immunotoxic or neurotoxic effect. SAS is neither mutagenic nor genotoxic in vivo. In intact cells, a direct interaction of unlabelled and unmodified SAS with DNA was never found. Differences in the magnitude of biological responses between pyrogenic and precipitated silica described in some in vitro studies with murine macrophages at exaggerated exposure levels seem to be related to interactions with cell culture proteins and cell membranes. The in vivo studies do not indicate that there is a toxicologically relevant difference between SAS products after oral exposure. It is noted that any silicon dioxide product not meeting established specifications, and/or produced to provide new functionality in food, requires its own specific safety and risk assessment.
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Shukur A, Whitehead D, Seifalian A, Azzawi M. The influence of silica nanoparticles on small mesenteric arterial function. Nanomedicine (Lond) 2016; 11:2131-46. [DOI: 10.2217/nnm-2016-0124] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: To determine the influence of silica nanoparticles (SiNPs) on small arterial function; both ex vivo and in vivo. Methods: Mono-dispersed dye-encapsulated SiNPs (97.85 ± 2.26 nm) were fabricated and vasoconstrictor and vasodilator responses of mesenteric arteries assessed. Results: We show that while exposure to SiNPs under static conditions, attenuated endothelial dependent dilator responses ex vivo, attenuation was only evident at lower agonist concentrations, when exposed under flow conditions or after intravenous administration in vivo. Pharmacological inhibition studies suggest that SiNPs may interfere with the endothelial dependent hyperpolarizing factor vasodilator pathway. Conclusion: The dosage dependent influence of SiNPs on arterial function will help identify strategies for their safe clinical administration.
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Affiliation(s)
- Ali Shukur
- School of Healthcare Science, Faculty of Science & Engineering, Manchester Metropolitan University, Manchester, UK
| | - Debra Whitehead
- School of Science & the Environment, Faculty of Science & Engineering, Manchester Metropolitan University, Manchester, UK
| | - Alexander Seifalian
- Centre for Nanotechnology & Regenerative Medicine, UCL Division of Surgery & Interventional Science, University College London, London, UK
| | - May Azzawi
- School of Healthcare Science, Faculty of Science & Engineering, Manchester Metropolitan University, Manchester, UK
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Silva AH, Locatelli C, Filho UP, Gomes BF, de Carvalho Júnior RM, de Gois JS, Borges DL, Creczynski-Pasa TB. Visceral fat increase and signals of inflammation in adipose tissue after administration of titanium dioxide nanoparticles in mice. Toxicol Ind Health 2016; 33:147-158. [PMID: 26655915 DOI: 10.1177/0748233715613224] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Titanium dioxide nanoparticles (TiO2 NP) are present in several daily use products, and the risks associated with their bioaccumulation must be stablished. Thus, an evaluation of several toxicological-related effects was conducted after intraperitoneal injection of TiO2 NPs in mice. Mice were divided into two groups, which received 2 mg kg-1 day-1 of TiO2 NPs or vehicle saline. Assessments of body and organ weight as well as biochemical, hematological, and histopathological analyses were performed in order to evaluate adverse effects. The results showed that treatment resulted in an increased visceral and abdominal fat deposition, as well as a mononuclear inflammatory infiltrates in the abdominal fat tissue. The TiO2 NPs induced significant decrease in the weight gain and splenomegaly. Additionally, TiO2 NP-treated mice showed altered hematological parameters and significant liver injuries, which were characterized by histopathological and biochemical changes. Our results also indicated that TiO2 NPs were absorbed and significantly accumulated in the spleen, liver, and kidney. These results showed the ability of TiO2 NPs to infiltrate different organs and to induce inflammation and liver and spleen damage with visceral fat accumulation. The data obtained are useful for the governmental authorities to legislate and implement regulations concerning the use and the production of this kind of material that might be hazardous to the living beings, as well as to the environment.
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Affiliation(s)
- Adny H Silva
- 1 Universidade Federal de Santa Catarina, Trindade, Florianópolis, SC, Brasil
| | | | | | - Bruna F Gomes
- 4 Instituto de Química de São Carlos, São Carlos, SP, Brasil
| | | | - Jefferson S de Gois
- 1 Universidade Federal de Santa Catarina, Trindade, Florianópolis, SC, Brasil
| | - Daniel Lg Borges
- 1 Universidade Federal de Santa Catarina, Trindade, Florianópolis, SC, Brasil
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Rawat N, Sandhya, Subaharan K, Eswaramoorthy M, Kaul G. Comparative in vivo toxicity assessment places multiwalled carbon nanotubes at a higher level than mesoporous silica nanoparticles. Toxicol Ind Health 2016; 33:182-192. [DOI: 10.1177/0748233715622307] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In the present work, we took two nanomaterials (NMs), mesoporous silica nanoparticles (MSNs) and multiwalled carbon nanotubes (MWCNTs), and compared their in vivo toxicity taking albino mice as a test animal model. Presently, conflicting data persist regarding behavior of these NMs with macromolecules like protein and lipid at the cellular level in cell lines as well as in animal models and this generated the interest to study them. The mice were treated orally with a single dose of 50 ppm MWCNTs and intraperitoneally with 10, 25, and 50 mg kg−1 body weight (BW) of MSNs and 1.5, 2.0, and 2.5 mg kg−1 BW of MWCNTs. Liver enzyme markers serum aspartate aminotransferase (AST), alanine aminotransferase, and alkaline phosphatase along with total protein (TP) levels were evaluated 7 days postexposure. No significant differences in organ weight indices or enzyme levels were observed between different treatment doses but there were significant differences between the treatment groups and the controls. Of the three enzymes assayed, AST displayed a peculiar pattern, especially in the MWCNTs intraperitoneally treated group. TP level was significantly increased in the orally treated MWCNTs group. The results showed that MWCNTs even at much smaller doses than MSNs displayed similar toxicity levels, suggesting that toxicity of MWCNTs is greater than MSNs.
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Affiliation(s)
- Nidhi Rawat
- National Dairy Research Institute, Indian Council of Agricultural Research, Karnal, Haryana, India
| | - Sandhya
- National Dairy Research Institute, Indian Council of Agricultural Research, Karnal, Haryana, India
| | - Kesavan Subaharan
- National Bureau of Agricultural Insect Resources, Bangalore, Karnataka, India
| | - M Eswaramoorthy
- Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India
| | - Gautam Kaul
- National Dairy Research Institute, Indian Council of Agricultural Research, Karnal, Haryana, India
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Zhuravskii S, Yukina G, Kulikova O, Panevin A, Tomson V, Korolev D, Galagudza M. Mast cell accumulation precedes tissue fibrosis induced by intravenously administered amorphous silica nanoparticles. Toxicol Mech Methods 2016; 26:260-9. [PMID: 27055490 DOI: 10.3109/15376516.2016.1169341] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Despite the increasing use of amorphous silica nanoparticles (SNPs) in biomedical applications, their toxicity after intravenous administration remains a major concern. We investigated the effects of single 7 mg/kg intravenous infusions of 13 nm SNPs on hemodynamic parameters in rats. Hematological and biochemical parameters were assessed at 7, 30, and 60 d post treatment. Silicon content in the liver, lungs, heart, and kidney was analyzed, as well as tissue histology with special emphasis on mast cell (MC) content. SNP infusion had no effect on hemodynamics, nor did it alter hematological or biochemical parameters. SNP retention in the liver was conspicuous for up to 60 d. Among the other organs analyzed, silicon content was significantly increased only in the lung at 1-h post infusion. Despite the relatively low dose, SNP administration caused extensive liver remodeling, including the formation of multiple foreign body-type granulomas starting 7 d post treatment, and subsequent development of fibrosis. Histopathological changes in the liver were not preceded by hepatocyte necrosis. We found increased MC abundance in the liver, lungs, and heart starting on day 30 post treatment. MC recruitment in the liver preceded fibrosis, suggesting that MCs are involved in liver tissue remodeling elicited by intravenously administered SNPs.
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Affiliation(s)
- Serge Zhuravskii
- a Institute of Experimental Medicine , Federal Almazov North-West Medical Research Centre , St. Petersburg , Russia ;,b Laboratory of Hearing and Speech, Core Research Centre , First I. P. Pavlov State Medical University of St. Petersburg , St. Petersburg , Russia
| | - Galina Yukina
- c Division of Pathomorphology, Core Research Centre , First I. P. Pavlov State Medical University of St. Petersburg , St. Petersburg , Russia
| | - Olga Kulikova
- a Institute of Experimental Medicine , Federal Almazov North-West Medical Research Centre , St. Petersburg , Russia ;,b Laboratory of Hearing and Speech, Core Research Centre , First I. P. Pavlov State Medical University of St. Petersburg , St. Petersburg , Russia
| | - Alexey Panevin
- a Institute of Experimental Medicine , Federal Almazov North-West Medical Research Centre , St. Petersburg , Russia ;,b Laboratory of Hearing and Speech, Core Research Centre , First I. P. Pavlov State Medical University of St. Petersburg , St. Petersburg , Russia
| | - Vladimir Tomson
- c Division of Pathomorphology, Core Research Centre , First I. P. Pavlov State Medical University of St. Petersburg , St. Petersburg , Russia
| | - Dmitry Korolev
- a Institute of Experimental Medicine , Federal Almazov North-West Medical Research Centre , St. Petersburg , Russia ;,d Department of Photonics and Optical Information Technology, ITMO University , St. Petersburg , Russia
| | - Michael Galagudza
- a Institute of Experimental Medicine , Federal Almazov North-West Medical Research Centre , St. Petersburg , Russia ;,d Department of Photonics and Optical Information Technology, ITMO University , St. Petersburg , Russia
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Mytych J, Wnuk M, Rattan SIS. Low doses of nanodiamonds and silica nanoparticles have beneficial hormetic effects in normal human skin fibroblasts in culture. CHEMOSPHERE 2016; 148:307-315. [PMID: 26814705 DOI: 10.1016/j.chemosphere.2016.01.045] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 01/07/2016] [Accepted: 01/11/2016] [Indexed: 06/05/2023]
Abstract
Nanodiamonds (ND) and silica nanoparticles (SiO2-NP) have been much investigated for their toxicity at high doses, little is known about their biological activity at low concentrations. Here we report the biphasic dose response of ND and SiO2-NP in modulating normal human facial skin fibroblasts (FSF1) in culture. ND and SiO2-NP at low concentration (up to 0.5 μg/ml) had beneficial effects on FSF1 in terms of increasing their proliferation and metabolic activity. Exposure of FSF1 cells to low levels of NP enhanced their wound healing ability in vitro and slowed down aging during serial passaging as measured by maintenance of youthful morphology, reduction in the rate of loss of telomeres, and the over all proliferative characteristics. Furthermore, NP treatment induced the activation of Nrf2- and FOXO3A-mediated cellular stress responses, including an increased expression of heme oxygenease (HO-1), sirtuin (SIRT1), and DNA methyltransferase II (DNMT2). These results imply that ND and SiO2-NP at low doses are potential hormetins, which exert mild stress-induced beneficial hormetic effects through improved survival, longevity, maintenance, repair and function of human cells.
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Affiliation(s)
- Jennifer Mytych
- Department of Genetics, University of Rzeszow, Rzeszow, Poland.
| | - Maciej Wnuk
- Department of Genetics, University of Rzeszow, Rzeszow, Poland.
| | - Suresh I S Rattan
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark.
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Wolfram J, Shen H, Ferrari M. Multistage vector (MSV) therapeutics. J Control Release 2015; 219:406-415. [PMID: 26264836 PMCID: PMC4656100 DOI: 10.1016/j.jconrel.2015.08.010] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 08/01/2015] [Accepted: 08/04/2015] [Indexed: 12/21/2022]
Abstract
One of the greatest challenges in the field of medicine is obtaining controlled distribution of systemically administered therapeutic agents within the body. Indeed, biological barriers such as physical compartmentalization, pressure gradients, and excretion pathways adversely affect localized delivery of drugs to pathological tissue. The diverse nature of these barriers requires the use of multifunctional drug delivery vehicles that can overcome a wide range of sequential obstacles. In this review, we explore the role of multifunctionality in nanomedicine by primarily focusing on multistage vectors (MSVs). The MSV is an example of a promising therapeutic platform that incorporates several components, including a microparticle, nanoparticles, and small molecules. In particular, these components are activated in a sequential manner in order to successively address transport barriers.
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Affiliation(s)
- Joy Wolfram
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA; CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience & Technology of China, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Haifa Shen
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA; Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, NY 10065, USA
| | - Mauro Ferrari
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA; Department of Medicine, Weill Cornell Medical College, New York, NY 10065, USA.
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Delalat B, Sheppard VC, Rasi Ghaemi S, Rao S, Prestidge CA, McPhee G, Rogers ML, Donoghue JF, Pillay V, Johns TG, Kröger N, Voelcker NH. Targeted drug delivery using genetically engineered diatom biosilica. Nat Commun 2015; 6:8791. [DOI: 10.1038/ncomms9791] [Citation(s) in RCA: 187] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 10/05/2015] [Indexed: 12/22/2022] Open
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Serban AI, Stanca L, Sima C, Staicu AC, Zarnescu O, Dinischiotu A. Complex responses to Si quantum dots accumulation in carp liver tissue: Beyond oxidative stress. Chem Biol Interact 2015; 239:56-66. [DOI: 10.1016/j.cbi.2015.06.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 06/04/2015] [Accepted: 06/08/2015] [Indexed: 01/01/2023]
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Kafshgari MH, Voelcker NH, Harding FJ. Applications of zero-valent silicon nanostructures in biomedicine. Nanomedicine (Lond) 2015; 10:2553-71. [DOI: 10.2217/nnm.15.91] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Zero-valent, or elemental, silicon nanostructures exhibit a number of properties that render them attractive for applications in nanomedicine. These materials hold significant promise for improving existing diagnostic and therapeutic techniques. This review summarizes some of the essential aspects of the fabrication techniques used to generate these fascinating nanostructures, comparing their material properties and suitability for biomedical applications. We examine the literature in regards to toxicity, biocompatibility and biodistribution of silicon nanoparticles, nanowires and nanotubes, with an emphasis on surface modification and its influence on cell adhesion and endocytosis. In the final part of this review, our attention is focused on current applications of the fabricated silicon nanostructures in nanomedicine, specifically examining drug and gene delivery, bioimaging and biosensing.
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Affiliation(s)
- Morteza Hasanzadeh Kafshgari
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Mawson Institute, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
| | - Nicolas H Voelcker
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Mawson Institute, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
| | - Frances J Harding
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Mawson Institute, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
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Sonin DL, Korolev DV, Postnov VN, Naumysheva EB, Pochkaeva EI, Vasyutina ML, Galagudza MM. Silicon-containing nanocarriers for targeted drug delivery: synthesis, physicochemical properties and acute toxicity. Drug Deliv 2015. [DOI: 10.3109/10717544.2015.1069421] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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Aula S, Lakkireddy S, Jamil K, Kapley A, Swamy AVN, Lakkireddy HR. Biophysical, biopharmaceutical and toxicological significance of biomedical nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra05889a] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Understanding of interplay between nanoparticles physicochemical and biophysical properties, and their impact on pharmacokinetic biodistribution and toxicological properties help designing of appropriate nanoparticle products for biomedical applications.
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Affiliation(s)
- Sangeetha Aula
- Centre for Biotechnology and Bioinformatics
- Jawaharlal Nehru Institute of Advanced Studies (JNIAS)
- Secunderabad
- India
- Department of Biotechnology
| | - Samyuktha Lakkireddy
- Centre for Biotechnology and Bioinformatics
- Jawaharlal Nehru Institute of Advanced Studies (JNIAS)
- Secunderabad
- India
- Department of Biotechnology
| | - Kaiser Jamil
- Centre for Biotechnology and Bioinformatics
- Jawaharlal Nehru Institute of Advanced Studies (JNIAS)
- Secunderabad
- India
| | - Atya Kapley
- Centre for Biotechnology and Bioinformatics
- Jawaharlal Nehru Institute of Advanced Studies (JNIAS)
- Secunderabad
- India
- Environmental Genomics Division
| | - A. V. N. Swamy
- Department of Chemical Engineering
- Jawaharlal Nehru Technological University Anantapur (JNTUA)
- Anantapuramu
- India
| | - Harivardhan Reddy Lakkireddy
- Drug Delivery Technologies and Innovation
- Pharmaceutical Sciences
- Sanofi Research and Development
- 94403 Vitry-sur-Seine
- France
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Sadek SA, Soliman AM, Marzouk M. Ameliorative effect of Allolobophora caliginosa extract on hepatotoxicity induced by silicon dioxide nanoparticles. Toxicol Ind Health 2014; 32:1358-1372. [PMID: 25548372 DOI: 10.1177/0748233714561075] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This study aims to evaluate the possible ameliorative effect of earthworm (Allolobophora caliginosa) extract (EE) against silicon dioxide nanoparticles (SiNPs)-induced liver injury in male albino rats. The effectiveness of EE was compared with silymarin as a standard hepatoprotective drug. The present work demonstrates the antioxidant activity of EE by 1,1-diphenyl-2-picrylhydrazyl assay. Administration of SiNPs, for 15 consecutive days, caused changes in most of the biochemical parameters, namely, serum aminotransferase enzymes activities (alanine transaminase and aspartate transaminase), alkaline phosphatase activity, total protein, total and direct bilirubin level, malondialdehyde, glutathione reduced, catalase, superoxide dismutase, glutathione reductase, and glutathione peroxidase. In addition, administration of SiNPs induced changes in liver tissue architecture. Administration of EE, for subsequent 30 days, to SiNPs exposure demonstrated significant ameliorative effects on nearly all the studied parameters, and such effects were compatible with those of silymarin. In addition, the administration of EE repairs, to some extent, the abnormal architecture of the liver tissue induced by SiNPs.
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Affiliation(s)
- Shimaa A Sadek
- Department of Zoology, Faculty of Science, Cairo University, Cairo, Egypt
| | - Amel M Soliman
- Department of Zoology, Faculty of Science, Cairo University, Cairo, Egypt
| | - Mohamed Marzouk
- Department of Zoology, Faculty of Science, Cairo University, Cairo, Egypt
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Voon SH, Kiew LV, Lee HB, Lim SH, Noordin MI, Kamkaew A, Burgess K, Chung LY. In vivo studies of nanostructure-based photosensitizers for photodynamic cancer therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:4993-5013. [PMID: 25164105 DOI: 10.1002/smll.201401416] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 07/26/2014] [Indexed: 06/03/2023]
Abstract
Animal models, particularly rodents, are major translational models for evaluating novel anticancer therapeutics. In this review, different types of nanostructure-based photosensitizers that have advanced into the in vivo evaluation stage for the photodynamic therapy (PDT) of cancer are described. This article focuses on the in vivo efficacies of the nanostructures as delivery agents and as energy transducers for photosensitizers in animal models. These materials are useful in overcoming solubility issues, lack of tumor specificity, and access to tumors deep in healthy tissue. At the end of this article, the opportunities made possible by these multiplexed nanostructure-based systems are summarized, as well as the considerable challenges associated with obtaining regulatory approval for such materials. The following questions are also addressed: (1) Is there a pressing demand for more nanoparticle materials? (2) What is the prognosis for regulatory approval of nanoparticles to be used in the clinic?
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Affiliation(s)
- Siew Hui Voon
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
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van Kesteren PCE, Cubadda F, Bouwmeester H, van Eijkeren JCH, Dekkers S, de Jong WH, Oomen AG. Novel insights into the risk assessment of the nanomaterial synthetic amorphous silica, additive E551, in food. Nanotoxicology 2014; 9:442-52. [PMID: 25033893 DOI: 10.3109/17435390.2014.940408] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
This study presents novel insights in the risk assessment of synthetic amorphous silica (SAS) in food. SAS is a nanostructured material consisting of aggregates and agglomerates of primary particles in the nanorange (<100 nm). Depending on the production process, SAS exists in four main forms, and each form comprises various types with different physicochemical characteristics. SAS is widely used in foods as additive E551. The novel insights from other studies relate to low gastrointestinal absorption of SAS that decreases with increasing dose, and the potential for accumulation in tissues with daily consumption. To accommodate these insights, we focused our risk assessment on internal exposure in the target organ (liver). Based on blood and tissue concentrations in time of two different SAS types that were orally and intravenously administered, a kinetic model is developed to estimate the silicon concentration in liver in (1) humans for average-to-worst-case dietary exposure at steady state and (2) rats and mice in key toxicity studies. The estimated liver concentration in humans is at a similar level as the measured or estimated liver concentrations in animal studies in which adverse effects were found. Hence, this assessment suggests that SAS in food may pose a health risk. Yet, for this risk assessment, we had to make assumptions and deal with several sources of uncertainty that make it difficult to draw firm conclusions. Recommendations to fill in the remaining data gaps are discussed. More insight in the health risk of SAS in food is warranted considering the wide applications and these findings.
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Affiliation(s)
- Petra C E van Kesteren
- National Institute for Public Health and the Environment (RIVM) , Bilthoven , The Netherlands
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Fucikova A, Valenta J, Pelant I, Kalbacova MH, Broz A, Rezek B, Kromka A, Bakaeva Z. Silicon nanocrystals and nanodiamonds in live cells: photoluminescence characteristics, cytotoxicity and interaction with cell cytoskeleton. RSC Adv 2014. [DOI: 10.1039/c3ra47574c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Our study on biological interaction of silicon nanocrystals (a) and nanodiamonds (b) with cells encourages their use in human medicine.
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Affiliation(s)
- A. Fucikova
- Department of Chemical Physics and Optics
- Faculty of Mathematics and Physics
- Charles University
- Prague 2, Czech Republic
| | - J. Valenta
- Department of Chemical Physics and Optics
- Faculty of Mathematics and Physics
- Charles University
- Prague 2, Czech Republic
| | - I. Pelant
- Institute of Physics AS CR
- v. v. i
- Prague 6, Czech Republic
| | - M. Hubalek Kalbacova
- Institute of Inherited Metabolic Disorders
- 1st Faculty of Medicine
- Charles University
- Prague, Czech Republic
| | - A. Broz
- Institute of Inherited Metabolic Disorders
- 1st Faculty of Medicine
- Charles University
- Prague, Czech Republic
| | - B. Rezek
- Institute of Physics AS CR
- v. v. i
- Prague 6, Czech Republic
| | - A. Kromka
- Institute of Physics AS CR
- v. v. i
- Prague 6, Czech Republic
| | - Z. Bakaeva
- Institute of Macromolecular Chemistry AV CR
- v. v. i
- Prague 6, Czech Republic
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Liu J, Erogbogbo F, Yong KT, Ye L, Liu J, Hu R, Chen H, Hu Y, Yang Y, Yang J, Roy I, Karker NA, Swihart MT, Prasad PN. Assessing clinical prospects of silicon quantum dots: studies in mice and monkeys. ACS NANO 2013; 7:7303-10. [PMID: 23841561 DOI: 10.1021/nn4029234] [Citation(s) in RCA: 133] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Silicon nanocrystals can provide the outstanding imaging capabilities of toxic heavy-metal-based quantum dots without employing heavy metals and have potential for rapid progression to the clinic. Understanding the toxicity of silicon quantum dots (SiQDs) is essential to realizing this potential. However, existing studies of SiQD biocompatibility are limited, with no systematic progression from small-animal to large-animal studies that are more clinically relevant. Here, we test the response of both mice and monkeys to high intravenous doses of a nanoconstruct created using only SiQDs and FDA-approved materials. We show that (1) neither mice nor monkeys show overt signs of toxicity reflected in their behavior, body mass, or blood chemistry, even at a dose of 200 mg/kg. (2) This formulation did not biodegrade as expected. Elevated levels of silicon were present in the liver and spleen of mice three months post-treatment. (3) Histopathology three months after treatment showed adverse effects of the nanoformulation in the livers of mice, but showed no such effects in monkeys. This investigation reveals that the systemic reactions of the two animal models may have some differences and there are no signs of toxicity clearly attributable to silicon quantum dots.
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Affiliation(s)
- Jianwei Liu
- Institute of Gerontology and Geriatrics, Chinese PLA General Hospital, Beijing 100853, People's Republic of China
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