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Li CC, Liu SL, Lien TS, Sun DS, Cheng CF, Hamid H, Chen HP, Ho TJ, Lin IH, Wu WS, Hu CT, Tsai KW, Chang HH. Therapeutic Potential of Salvia miltiorrhiza Root Extract in Alleviating Cold-Induced Immunosuppression. Int J Mol Sci 2024; 25:9432. [PMID: 39273376 PMCID: PMC11395648 DOI: 10.3390/ijms25179432] [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: 06/30/2024] [Revised: 08/23/2024] [Accepted: 08/28/2024] [Indexed: 09/15/2024] Open
Abstract
The interaction between environmental stressors, such as cold exposure, and immune function significantly impacts human health. Research on effective therapeutic strategies to combat cold-induced immunosuppression is limited, despite its importance. In this study, we aim to investigate whether traditional herbal medicine can counteract cold-induced immunosuppression. We previously demonstrated that cold exposure elevated immunoglobulin G (IgG) levels in mice, similar to the effects of intravenous immunoglobulin (IVIg) treatments. This cold-induced rise in circulating IgG was mediated by the renin-angiotensin-aldosterone system and linked to vascular constriction. In our mouse model, the cold-exposed groups (4 °C) showed significantly elevated plasma IgG levels and reduced bacterial clearance compared with the control groups maintained at room temperature (25 °C), both indicative of immunosuppression. Using this model, with 234 mice divided into groups of 6, we investigated the potential of tanshinone IIA, an active compound in Salvia miltiorrhiza ethanolic root extract (SMERE), in alleviating cold-induced immunosuppression. Tanshinone IIA and SMERE treatments effectively normalized elevated plasma IgG levels and significantly improved bacterial clearance impaired by cold exposure compared with control groups injected with a vehicle control, dimethyl sulfoxide. Notably, bacterial clearance, which was impaired by cold exposure, showed an approximately 50% improvement following treatment, restoring immune function to levels comparable to those observed under normal temperature conditions (25 °C, p < 0.05). These findings highlight the therapeutic potential of traditional herbal medicine in counteracting cold-induced immune dysregulation, offering valuable insights for future strategies aimed at modulating immune function in cold environments. Further research could focus on isolating tanshinone IIA and compounds present in SMERE to evaluate their specific roles in mitigating cold-induced immunosuppression.
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Grants
- 104-2320-B-320 -009 -MY3, 107-2311-B-320-002-MY3, 111-2320-B320-006-MY3, 112-2320-B-320-007 National Science and Technology Council, Taiwan
- TCMMP104-06, TCMMP108-04, TCMMP 111-01, TCAS111-02, TCAS-112-02, TCAS113-04, TCRD112-033, TCRD113-041 Tzu-Chi Medical Foundation
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Affiliation(s)
- Chi-Cheng Li
- Department of Hematology and Oncology, Buddhist Tzu Chi General Hospital, Hualien 970, Taiwan
- Center of Stem Cell & Precision Medicine, Hualien Tzu Chi Hospital, Hualien 970, Taiwan
| | - Song-Lin Liu
- Department of Molecular Biology and Human Genetics, Tzu Chi University, Hualien 970, Taiwan
| | - Te-Sheng Lien
- Department of Molecular Biology and Human Genetics, Tzu Chi University, Hualien 970, Taiwan
| | - Der-Shan Sun
- Department of Molecular Biology and Human Genetics, Tzu Chi University, Hualien 970, Taiwan
| | - Ching-Feng Cheng
- Department of Pediatrics, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 231, Taiwan
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Hussana Hamid
- Department of Biochemistry, School of Medicine, Tzu Chi University, Hualien 970, Taiwan
| | - Hao-Ping Chen
- Department of Biochemistry, School of Medicine, Tzu Chi University, Hualien 970, Taiwan
- Integration Center of Traditional Chinese and Modern Medicine, Hualien Tzu Chi Hospital, Hualien 970, Taiwan
| | - Tsung-Jung Ho
- Integration Center of Traditional Chinese and Modern Medicine, Hualien Tzu Chi Hospital, Hualien 970, Taiwan
- Department of Chinese Medicine, Hualien Tzu Chi Hospital, Hualien 970, Taiwan
- School of Post-Baccalaureate Chinese Medicine, Tzu Chi University, Hualien 970, Taiwan
| | - I-Hsin Lin
- School of Post-Baccalaureate Chinese Medicine, Tzu Chi University, Hualien 970, Taiwan
| | - Wen-Sheng Wu
- Division of General Surgery, Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation Hualien, Hualien 970, Taiwan
- Department of Laboratory Medicine and Biotechnology, College of Medicine, Tzu Chi University Hualien, Hualien 970, Taiwan
| | - Chi-Tan Hu
- Research Center for Hepatology, Department of Gastroenterology, Buddhist Tzu Chi General Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 970, Taiwan
| | - Kuo-Wang Tsai
- Department of Research, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 231, Taiwan
| | - Hsin-Hou Chang
- Department of Molecular Biology and Human Genetics, Tzu Chi University, Hualien 970, Taiwan
- Integration Center of Traditional Chinese and Modern Medicine, Hualien Tzu Chi Hospital, Hualien 970, Taiwan
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Li CC, Munalisa R, Lee HY, Lien TS, Chan H, Hung SC, Sun DS, Cheng CF, Chang HH. Restraint Stress-Induced Immunosuppression Is Associated with Concurrent Macrophage Pyroptosis Cell Death in Mice. Int J Mol Sci 2023; 24:12877. [PMID: 37629059 PMCID: PMC10454201 DOI: 10.3390/ijms241612877] [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: 06/15/2023] [Revised: 08/10/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023] Open
Abstract
Psychological stress is widely acknowledged as a major contributor to immunosuppression, rendering individuals more susceptible to various diseases. The complex interplay between the nervous, endocrine, and immune systems underlies stress-induced immunosuppression. However, the underlying mechanisms of psychological-stress-induced immunosuppression remain unclear. In this study, we utilized a restraint stress mouse model known for its suitability in investigating physiological regulations during psychological stress. Comparing it with cold exposure, we observed markedly elevated levels of stress hormones corticosterone and cortisol in the plasma of mice subjected to restraint stress. Furthermore, restraint-stress-induced immunosuppression differed from the intravenous immunoglobulin-like immunosuppression observed in cold exposure, with restraint stress leading to increased macrophage cell death in the spleen. Suppression of pyroptosis through treatments of inflammasome inhibitors markedly ameliorated restraint-stress-induced spleen infiltration and pyroptosis cell death of macrophages in mice. These findings suggest that the macrophage pyroptosis associated with restraint stress may contribute to its immunosuppressive effects. These insights have implications for the development of treatments targeting stress-induced immunosuppression, emphasizing the need for further investigation into the underlying mechanisms.
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Affiliation(s)
- Chi-Cheng Li
- Department of Hematology and Oncology, Buddhist Tzu Chi General Hospital, Hualien 970, Taiwan;
- Center of Stem Cell & Precision Medicine, Hualien Tzu Chi Hospital, Hualien 970, Taiwan
| | - Rina Munalisa
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien 970, Taiwan; (R.M.); (H.-Y.L.); (T.-S.L.); (H.C.); (S.-C.H.); (D.-S.S.)
| | - Hsuan-Yun Lee
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien 970, Taiwan; (R.M.); (H.-Y.L.); (T.-S.L.); (H.C.); (S.-C.H.); (D.-S.S.)
| | - Te-Sheng Lien
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien 970, Taiwan; (R.M.); (H.-Y.L.); (T.-S.L.); (H.C.); (S.-C.H.); (D.-S.S.)
| | - Hao Chan
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien 970, Taiwan; (R.M.); (H.-Y.L.); (T.-S.L.); (H.C.); (S.-C.H.); (D.-S.S.)
| | - Shih-Che Hung
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien 970, Taiwan; (R.M.); (H.-Y.L.); (T.-S.L.); (H.C.); (S.-C.H.); (D.-S.S.)
| | - Der-Shan Sun
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien 970, Taiwan; (R.M.); (H.-Y.L.); (T.-S.L.); (H.C.); (S.-C.H.); (D.-S.S.)
| | - Ching-Feng Cheng
- Department of Pediatrics, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taipei 231, Taiwan;
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Hsin-Hou Chang
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien 970, Taiwan; (R.M.); (H.-Y.L.); (T.-S.L.); (H.C.); (S.-C.H.); (D.-S.S.)
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Zahra S, Bukhari H, Qaisar S, Sheikh A, Amin A. Synthesis of nanosize zinc oxide through aqueous sol-gel route in polyol medium. BMC Chem 2022; 16:104. [PMID: 36434647 PMCID: PMC9700888 DOI: 10.1186/s13065-022-00900-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 11/09/2022] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND This study is aimed to synthesize nanosize zinc oxide by acid catalyzed sol-gel process using zinc nitrate hexahydrate as precursor, aqueous isopropanol as solvent and glycerin for making polyol system. The polyol mediated procedure was employed in combination with calcination induced synthesis of nanoparticles of numerous sizes obtained with the variation in calcination temperature from 500 to 900 ℃. The crystal structure of the prepared samples was characterized by X-ray diffraction analysis (XRD). Infrared spectroscopy (IR) was used to identify the surface hydroxyl groups. Thermal stability was confirmed by differential scanning calorimetry-thermogravimetric analysis (DSC-TGA) whereas field emission scanning electron microscopy (FESEM) was used to study the surface morphology of nanoparticles. RESULTS Results revealed the formation of hexagonal wurtzite structure of irregular shaped nanoparticles having size ranging from 50-100 nm. However, the particles combined to form agglomerates of 200-400 nm with the rise in calcination temperature. CONCLUSIONS These results indicate that nanosize zinc oxide can be synthesized successfully by a simple process comprising of glycerin as a low-cost, non-toxic and eco-friendly polyol followed by calcination at ambient temperatures.
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Affiliation(s)
- Samreen Zahra
- grid.420148.b0000 0001 0721 1925Mineral Processing Research Centre, PCSIR Laboratories Complex, Ferozepur Road, Lahore, 54600 Pakistan
| | - Hamim Bukhari
- Department of Chemistry, Post Graduate Islamia College, Cooper Road, Lahore, 54000 Pakistan
| | - Saboora Qaisar
- Department of Chemistry, Post Graduate Islamia College, Cooper Road, Lahore, 54000 Pakistan
| | - Asma Sheikh
- grid.420148.b0000 0001 0721 1925Food and Biotechnology Research Centre, PCSIR Laboratories Complex, Ferozepur Road, Lahore, 54600 Pakistan
| | - Athar Amin
- grid.420148.b0000 0001 0721 1925Mineral Processing Research Centre, PCSIR Laboratories Complex, Ferozepur Road, Lahore, 54600 Pakistan
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Li CC, Jhou SM, Li YC, Ciou JW, Lin YY, Hung SC, Chang JH, Chang JC, Sun DS, Chou ML, Chang HH. Exposure to low levels of photocatalytic TiO 2 nanoparticles enhances seed germination and seedling growth of amaranth and cruciferous vegetables. Sci Rep 2022; 12:18228. [PMID: 36309586 PMCID: PMC9617883 DOI: 10.1038/s41598-022-23179-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 10/26/2022] [Indexed: 12/31/2022] Open
Abstract
Titanium dioxide (TiO2) is one of the most common compounds on Earth, and it is used in natural forms or engineered bulks or nanoparticles (NPs) with increasing rates. However, the effect of TiO2 NPs on plants remains controversial. Previous studies demonstrated that TiO2 NPs are toxic to plants, because the photocatalytic property of TiO2 produces biohazardous reactive oxygen species. In contrast, another line of evidence suggested that TiO2 NPs are beneficial to plant growth. To verify this argument, in this study, we used seed germination of amaranth and cruciferous vegetables as a model system. Intriguingly, our data suggested that the controversy was due to the dosage effect. The photocatalytic activity of TiO2 NPs positively affected seed germination and growth through gibberellins in a plant-tolerable range (0.1 and 0.2 mg/cm2), whereas overdosing (1 mg/cm2) induced tissue damage. Given that plants are the foundations of the ecosystem; these findings are useful for agricultural application, sustainable development and maintenance of healthy environments.
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Affiliation(s)
- Chi-Cheng Li
- grid.414692.c0000 0004 0572 899XDepartment of Hematology and Oncology, Buddhist Tzu Chi General Hospital, Hualien, Taiwan ,Center of Stem Cell & Precision Medicine, Hualien Tzu Chi Hospital, Hualien, Taiwan
| | - Sian-Ming Jhou
- grid.411824.a0000 0004 0622 7222Tzu-Chi Senior High School Affiliated With Tzu-Chi University, Hualien, Taiwan
| | - Yi-Chen Li
- grid.411824.a0000 0004 0622 7222Tzu-Chi Senior High School Affiliated With Tzu-Chi University, Hualien, Taiwan
| | - Jhih-Wei Ciou
- grid.411824.a0000 0004 0622 7222Tzu-Chi Senior High School Affiliated With Tzu-Chi University, Hualien, Taiwan
| | - You-Yen Lin
- grid.411824.a0000 0004 0622 7222Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien, Taiwan
| | - Shih-Che Hung
- grid.411824.a0000 0004 0622 7222Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien, Taiwan ,grid.411824.a0000 0004 0622 7222Institute of Medical Sciences, Tzu-Chi University, Hualien, Taiwan
| | - Jen-Hsiang Chang
- grid.445052.20000 0004 0639 3773Department and Graduate School of Computer Science, National Pingtung University, Pingtung, Taiwan
| | | | - Der-Shan Sun
- grid.411824.a0000 0004 0622 7222Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien, Taiwan ,grid.411824.a0000 0004 0622 7222Institute of Medical Sciences, Tzu-Chi University, Hualien, Taiwan
| | - Ming-Lun Chou
- grid.411824.a0000 0004 0622 7222Department of Life Sciences, Tzu-Chi University, Hualien, Taiwan
| | - Hsin-Hou Chang
- grid.411824.a0000 0004 0622 7222Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien, Taiwan ,grid.411824.a0000 0004 0622 7222Institute of Medical Sciences, Tzu-Chi University, Hualien, Taiwan
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5
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Diéguez-Santana K, González-Díaz H. Towards machine learning discovery of dual antibacterial drug-nanoparticle systems. NANOSCALE 2021; 13:17854-17870. [PMID: 34671801 DOI: 10.1039/d1nr04178a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Artificial Intelligence/Machine Learning (AI/ML) algorithms may speed up the design of DADNP systems formed by Antibacterial Drugs (AD) and Nanoparticles (NP). In this work, we used IFPTML = Information Fusion (IF) + Perturbation-Theory (PT) + Machine Learning (ML) algorithm for the first time to study of a large dataset of putative DADNP systems composed by >165 000 ChEMBL AD assays and 300 NP assays vs. multiple bacteria species. We trained alternative models with Linear Discriminant Analysis (LDA), Artificial Neural Networks (ANN), Bayesian Networks (BNN), K-Nearest Neighbour (KNN) and other algorithms. IFPTML-LDA model was simpler with values of Sp ≈ 90% and Sn ≈ 74% in both training (>124 K cases) and validation (>41 K cases) series. IFPTML-ANN and KNN models are notably more complicated even when they are more balanced Sn ≈ Sp ≈ 88.5%-99.0% and AUROC ≈ 0.94-0.99 in both series. We also carried out a simulation (>1900 calculations) of the expected behavior for putative DADNPs in 72 different biological assays. The putative DADNPs studied are formed by 27 different drugs with multiple classes of NP and types of coats. In addition, we tested the validity of our additive model with 80 DADNP complexes experimentally synthetized and biologically tested (reported in >45 papers). All these DADNPs show values of MIC < 50 μg mL-1 (cutoff used) better that MIC of AD and NP alone (synergistic or additive effect). The assays involve DADNP complexes with 10 types of NP, 6 coating materials, NP size range 5-100 nm vs. 15 different antibiotics, and 12 bacteria species. The IFPTML-LDA model classified correctly 100% (80 out of 80) DADNP complexes as biologically active. IFPMTL additive strategy may become a useful tool to assist the design of DADNP systems for antibacterial therapy taking into consideration only information about AD and NP components by separate.
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Affiliation(s)
- Karel Diéguez-Santana
- Department of Organic and Inorganic Chemistry, University of Basque Country UPV/EHU, 48940 Leioa, Spain
| | - Humberto González-Díaz
- Department of Organic and Inorganic Chemistry, University of Basque Country UPV/EHU, 48940 Leioa, Spain
- Basque Center for Biophysics CSIC-UPVEH, University of Basque Country UPV/EHU, 48940 Leioa, Spain.
- IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Biscay, Spain
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Yougbaré S, Mutalik C, Okoro G, Lin IH, Krisnawati DI, Jazidie A, Nuh M, Chang CC, Kuo TR. Emerging Trends in Nanomaterials for Antibacterial Applications. Int J Nanomedicine 2021; 16:5831-5867. [PMID: 34475754 PMCID: PMC8405884 DOI: 10.2147/ijn.s328767] [Citation(s) in RCA: 72] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 08/04/2021] [Indexed: 01/11/2023] Open
Abstract
Around the globe, surges of bacterial diseases are causing serious health threats and related concerns. Recently, the metal ion release and photodynamic and photothermal effects of nanomaterials were demonstrated to have substantial efficiency in eliminating resistance and surges of bacteria. Nanomaterials with characteristics such as surface plasmonic resonance, photocatalysis, structural complexities, and optical features have been utilized to control metal ion release, generate reactive oxygen species, and produce heat for antibacterial applications. The superior characteristics of nanomaterials present an opportunity to explore and enhance their antibacterial activities leading to clinical applications. In this review, we comprehensively list three different antibacterial mechanisms of metal ion release, photodynamic therapy, and photothermal therapy based on nanomaterials. These three different antibacterial mechanisms are divided into their respective subgroups in accordance with recent achievements, showcasing prospective challenges and opportunities in clinical, environmental, and related fields.
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Affiliation(s)
- Sibidou Yougbaré
- International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
- Institut de Recherche en Sciences de la Santé (IRSS-DRCO)/Nanoro, Ouagadougou, Burkina Faso
| | - Chinmaya Mutalik
- International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
| | - Goodluck Okoro
- Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
| | - I-Hsin Lin
- School of Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
| | | | - Achmad Jazidie
- Department of Electrical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, 60111, Indonesia
- Universitas Nahdlatul Ulama Surabaya, Surabaya, 60237, Indonesia
| | - Mohammad Nuh
- Universitas Nahdlatul Ulama Surabaya, Surabaya, 60237, Indonesia
- Department of Biomedical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, 60111, Indonesia
| | - Che-Chang Chang
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
- International Ph.D. Program for Translational Science, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
| | - Tsung-Rong Kuo
- International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
- Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan
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Kunrath MF, Campos MM. Metallic-nanoparticle release systems for biomedical implant surfaces: effectiveness and safety. Nanotoxicology 2021; 15:721-739. [PMID: 33896331 DOI: 10.1080/17435390.2021.1915401] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The current focus of bioengineering for implant devices involves the development of functionalized surfaces, bioactive coatings, and metallic nanoparticles (mNPs) with a controlled release, together with strategies for the application of drugs in situ, aiming at reducing infection rates, with an improvement of clinical outcomes. Controversially, negative aspects, such as cytotoxicity, mNP incorporation, bioaccumulation, acquired autoimmunity, and systemic toxicity have gained attention at the same status of importance, concerning the release of mNPs from these surface systems. The balance between the promising prospects of system releasing mNPs and the undesirable long-term adverse reactions require further investigation. The scarcity of knowledge and the methods of analysis of nanoscale-based systems to control the sequence of migration, interaction, and nanoparticle incorporation with human tissues raise hesitation about their efficacy and safety. Looking ahead, this innovative approach requires additional scientific investigation for permitting an evolution of implants without counterpoints, while updating implant surface technologies to a new level of development. This critical review has explored the promising properties of metals at the nano-scale to promote broad-spectrum bacterial control, allowing for a decrease in using systemic antibiotics. Attempts have also been made to discuss the existing limitations and the future challenges regarding these technologies, besides the negative findings that are explored in the literature.
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Affiliation(s)
- Marcel F Kunrath
- Programa de Pós-Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.,Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | - Maria M Campos
- Programa de Pós-Graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.,Centro de Pesquisa em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
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8
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Wang P, Jiang S, Li Y, Luo Q, Lin J, Hu L, Liu X, Xue F. Virus-like mesoporous silica-coated plasmonic Ag nanocube with strong bacteria adhesion for diabetic wound ulcer healing. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2021; 34:102381. [PMID: 33771705 DOI: 10.1016/j.nano.2021.102381] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 01/21/2021] [Accepted: 03/03/2021] [Indexed: 01/13/2023]
Abstract
The Gram-positive bacterium Staphylococcus aureus (MRSA) and the Gram-negative bacillus Escherichia coli (E. coli) can be commonly found in diabetic foot ulcers. However, the multi-drug resistant pathogenic bacteria infection is often difficult to eradicate by the conventional antibiotics and easy to spread which can lead to complications such as gangrene or sepsis. In this work, in order to pull through the low cell wall adhesion capability of typical antibacterial Ag nanoparticles, we fabricated biomimic virus-like mesoporous silica coated Ag nanocubes with gentamicin loading, and then the core-shell nanostructure was entrapped in the FDA approved hydrogel dressing. Interestingly, the Ag nanocubes with virus-like mesoporous silica coating are capable of effectively adsorbing on the rigid cell wall of both E. coli and MRSA. The intracellular H2S in natural bacterial environment can induce generation of small Ag nanospheres, which are the ideal antibacterial nanoagents. Combined with the gentamicin delivery, the pathogenic bacteria in diabetic wound can be completely eradicated by our dressing to improve the wound healing procedure. This virus-like core-shell nanostructure sheds light for the future wound healing dressing design to promote the clinical applications on antibacterial eradication.
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Affiliation(s)
- Peiyuan Wang
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, PR China; Department of Translational Medicine, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, PR China.; The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, PR China
| | - Suhua Jiang
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, PR China; Department of Translational Medicine, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, PR China.; The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, PR China
| | - Yang Li
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, PR China; Department of Translational Medicine, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, PR China.; The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, PR China
| | - Qiang Luo
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, PR China; Department of Translational Medicine, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, PR China.; The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, PR China
| | - Jinyan Lin
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, PR China; Department of Translational Medicine, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, PR China.; The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, PR China
| | - Lidan Hu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Department of Biochemistry and Molecular Biology, University of South China, Hengyang, PR China
| | - Xiaolong Liu
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, PR China; Department of Translational Medicine, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, PR China.; The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, PR China.
| | - Fangqin Xue
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, PR China; Department of Gastrointestinal Surgery, Fujian Provincial Hospital, Fuzhou, PR China.
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9
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Ortega-Tenezaca B, González-Díaz H. IFPTML mapping of nanoparticle antibacterial activity vs. pathogen metabolic networks. NANOSCALE 2021; 13:1318-1330. [PMID: 33410431 DOI: 10.1039/d0nr07588d] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Nanoparticles are useful antimicrobial drug-release systems, but some nanoparticles also exhibit antibacterial activity. However, investigation of their antibacterial activity is a difficult and slow process due to the numerous combinations of nanoparticle size, shape, and composition vs. biological tests, assay organisms, and multiple activity parameters to be measured. Additionally, the overuse of antibiotics has led to the emergence of resistant bacterial strains with different metabolic networks. Computational models may speed up this process, but the models reported to date do not to consider all the previous factors, and the data sources are dispersed and not curated. Thus, herein, we used an information fusion, perturbation-theory machine learning (IFPTML) approach, which is introduced by us for the first time, to fit a model for the discovery of antibacterial nanoparticles. The dataset studied had 15 classes of nanoparticles (1-100 nm) with most cases in the range of 1-50 nm vs. >20 pathogenic bacteria species with different metabolic networks. The nanoparticles studied included metal nanoparticles of Au, Ag, and Cu; oxide nanoparticles of Zn, Cu, La, Al, Fe, Sn, Ti, Cd, and Si; and metal salt nanoparticles of CuI and CdS. We used the SOFT.PTML software (our own application) with a user-friendly interface for the IFPTML calculations and a control statistics package. Using SOFT.PTML, we found a linear logistic regression equation that could model 4 biological activity parameters using only 8 variables with χ2 = 2265.75, p-level <0.05, sensitivity, Sn = 79.4, and specificity, Sp = 99.3, for 3213 cases (nanoparticle-bacteria pairs) in the training series. The model had Sn = 80.8 and Sp = 99.3 for 2114 cases in the external validation series. We also developed a random forest non-linear model with higher values of Sn and Sp = 98-99% in the training/validation series, although it was more complicated to use. SOFT.PTML has been demonstrated to be a useful tool for the analysis of complex data in nanotechnology. We also introduced a new anabolism-catabolism unbalance index of metabolic networks to reveal the biological connotation of the IFPTML predictions for antibacterial nanoparticles. These new models open a new door for the discovery of NPs vs. new bacterial species and strains with different topological structures of their metabolic networks.
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Affiliation(s)
- Bernabé Ortega-Tenezaca
- RNASA-IMEDIR, Computer Science Faculty, University of A Coruna, 15071 A Coruña, Spain and Amazon State University UEA, Puyo, Pastaza, Ecuador and Department of Organic and Inorganic Chemistry, University of Basque Country UPV/EHU, 48940 Leioa, Spain. and Biomedical Research Institute of A Coruña (INIBIC), University Hospital Complex of A Coruña (CHUAC), 15006 A Coruña, Spain and Center for Investigation on Technologies of Information and Communication (CITIC), University of Coruña (UDC), Campus de Elviña s/n, 15071 A Coruña, Spain
| | - Humberto González-Díaz
- Department of Organic and Inorganic Chemistry, University of Basque Country UPV/EHU, 48940 Leioa, Spain. and Basque Center for Biophysics CSIC-UPVEH, University of Basque Country UPV/EHU, 48940 Leioa, Spain and IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Biscay, Spain
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10
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Abstract
Pure titanium dioxide TiO2 photocatalytic substrates exhibit antibacterial activity only when they are irradiated with ultraviolet light, which comprises high-energy wavelengths that damage all life. Impurity doping of TiO2-related materials enables visible light to stimulate photocatalytic activity, which enhances opportunities for TiO2 to be used as a disinfectant in living environments. Boron-doped TiO2 displays visible-light-responsive bactericidal properties. However, because boron-derived compounds also exert notable antibacterial effects, most reports did not clearly demonstrate the extent to which the bactericidal property of boron-doped TiO2 is contributed by visible-light-stimulated photocatalysis. In addition, TiO2 thin films have considerable potential for applications in equipment that requires sterilization; however, the antibacterial properties of boron-doped TiO2 thin films have been examined by only a few studies. We found that boron-doped TiO2 thin films displayed visible-light-driven antibacterial properties. Moreover, because boron compounds may have intrinsic antibacterial properties, using control groups maintained in the dark, we clearly demonstrated that visible light stimulated the photocatalysis of boron-doped TiO2 thin films but not the residue boron compounds display antibacterial property. The bactericidal effects induced by visible light are equally potent for the elimination of the model organism Escherichia coli and human pathogens, such as Acinetobacter baumannii, Staphylococcus aureus, and Streptococcus pyogenes. The antibacterial applications of boron-doped TiO2 thin films are described, and relevant perspectives discussed.
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11
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Silver Nanoparticles Protect Skin from Ultraviolet B-Induced Damage in Mice. Int J Mol Sci 2020; 21:ijms21197082. [PMID: 32992921 PMCID: PMC7582269 DOI: 10.3390/ijms21197082] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/15/2020] [Accepted: 09/23/2020] [Indexed: 02/06/2023] Open
Abstract
Ultraviolet (UV) radiation from sunlight has various adverse effects; thus, UV blockage is recommended for preventing sunburn. Common sunscreen ingredients, such as nanosized titanium dioxide and zinc oxide, offer effective protection and enhance cosmetic appearance; however, health concerns have been raised regarding their photocatalytic activity, which generates reactive oxygen species under UV illumination. Silver nanoparticles (AgNPs) are known as safe materials for use in a wide spectrum of biomedical applications. In vitro studies have revealed that AgNPs may have a protective effect against UV irradiation, but the effects in animal studies remain unclear. The present study demonstrated that AgNPs effectively protect against UVB-induced skin damage both in cell cultures and mouse models. These results suggested that AgNPs are feasible and safe as sunscreen ingredients for protection against UVB-induced skin damage.
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12
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Digitally Printed AgNPs Doped TiO2 on Commercial Porcelain-Grès Tiles: Synergistic Effects and Continuous Photocatalytic Antibacterial Activity. SURFACES 2020. [DOI: 10.3390/surfaces3010002] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In the present study, we use commercial digitally printed ceramic tiles, functionnalized by AgNPs doped micro–TiO2, to investigate the mechanism of Ag in the continouos photocatalytic antibacterial activity. The novelty of the research lies in the attempt to understand the mechanism of Ag, supported on TiO2, able to exhibit the same antibacterial activity of a standard system containing Ag species, but here, totally embedded on the tile surface, and thus not free to move and damage the bacteria cell. UV/vis diffuse reflectance spectroscopy (DRS) of AgNPs–TiO2 tiles indicated an enhanced visible light response, wherein a new absorption band was produced around 18,000–20,000 cm−1 (i.e., in the 400–600 nm range) owing to the surface plasmon resonance (SPR) of AgNPs. The antibacterial photocatalytic experiments were conducted towards the inactivation of E. coli under solar light and indoor light. It was found that the degradation speed of E. coli in the presence of AgNPs–TiO2 tiles is solar light-intensity depending. This justifies the semiconductor behavior of the material. Furthermore, the AgNPs–TiO2 tiles exhibit a high ability for the inactivation of E. coli at a high load (104–107 colony-forming unit (CFU)/mL). Additionally, AgNPs–TiO2 tiles showed a remarkable antibacterial activity under indoor light, which confirms the good photocatalytic ability of such tiles. On the basis of the reactive oxygen species (ROS) quenching experiments, O2•− species and h+ were more reactive for the inactivation of E. coli rather than •OH species. This is because of the different lifetime (bacteria are more likely oxidized by ROS with longer lifetime); in fact, O2•− and h+ exhibit a longer lifetime compared with •OH species. The generation of H2O2 as the most stable ROS molecule was also suggested.
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Sun L, Jiang W, Zhang H, Guo Y, Chen W, Jin Y, Chen H, Du K, Dai H, Ji J, Wang B. Photosensitizer-Loaded Multifunctional Chitosan Nanoparticles for Simultaneous in Situ Imaging, Highly Efficient Bacterial Biofilm Eradication, and Tumor Ablation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:2302-2316. [PMID: 30596498 DOI: 10.1021/acsami.8b19522] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In recent decades, bacterial and viral infections and chronic inflammatory response have emerged as important causes of cancer. Also, infections remain a significant cause of morbidity and mortality in cancer patients. In this work, carboxymethyl chitosan nanoparticles (CMC NPs) were synthesized in a facile and green way and further combined with ammonium methylbenzene blue (MB) as a cross-linking agent as well as a fluorescent molecule and a photosensitizer for self-imaging photodynamic therapy (PDT). The obtained CMC-MB NPs exhibited an apparent pH-responsive release behavior of MB, which was released for a prolonged period in a simulated physiological environment (pH 7.4) for more than 15 days and the time reduced to only 3.5 h in acidic conditions (pH 5.5). When irradiated by a 650 nm laser at 202 mW/cm2 for 5 min, the CMC-MB NPs showed efficient bactericidal and biofilm eradication properties as well as suppression of tumor cell growth in a similar acidified microenvironment. Furthermore, in an in vivo rabbit wound bacterial infection model, the rapid sterilization of CMC-MB NPs played a crucial role in bacterial infections, inflammation inhibition, and wound healing. As a PDT treatment against cancer, the CMC-MB NPs also exhibited an efficient antitumor therapeutic effect in a subcutaneous tumor mice model.
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Affiliation(s)
- Lin Sun
- School of Ophthalmology & Optometry, Eye Hospital , Wenzhou Medical University , Wenzhou 325027 , China
| | - Wenya Jiang
- School of Ophthalmology & Optometry, Eye Hospital , Wenzhou Medical University , Wenzhou 325027 , China
| | - Hengrui Zhang
- School of Ophthalmology & Optometry, Eye Hospital , Wenzhou Medical University , Wenzhou 325027 , China
- Wenzhou Institute of Biomaterials and Engineering , Chinese Academy of Sciences , Wenzhou 325000 , China
| | - Yishun Guo
- School of Ophthalmology & Optometry, Eye Hospital , Wenzhou Medical University , Wenzhou 325027 , China
| | - Wei Chen
- School of Ophthalmology & Optometry, Eye Hospital , Wenzhou Medical University , Wenzhou 325027 , China
- Wenzhou Institute of Biomaterials and Engineering , Chinese Academy of Sciences , Wenzhou 325000 , China
| | - Yingying Jin
- School of Ophthalmology & Optometry, Eye Hospital , Wenzhou Medical University , Wenzhou 325027 , China
| | - Hao Chen
- School of Ophthalmology & Optometry, Eye Hospital , Wenzhou Medical University , Wenzhou 325027 , China
- Wenzhou Institute of Biomaterials and Engineering , Chinese Academy of Sciences , Wenzhou 325000 , China
| | - Kanghui Du
- School of Ophthalmology & Optometry, Eye Hospital , Wenzhou Medical University , Wenzhou 325027 , China
| | - Hangdong Dai
- School of Ophthalmology & Optometry, Eye Hospital , Wenzhou Medical University , Wenzhou 325027 , China
| | - Jian Ji
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Bailiang Wang
- School of Ophthalmology & Optometry, Eye Hospital , Wenzhou Medical University , Wenzhou 325027 , China
- Wenzhou Institute of Biomaterials and Engineering , Chinese Academy of Sciences , Wenzhou 325000 , China
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15
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Chapman BS, Mishra SR, Tracy JB. Direct electrospinning of titania nanofibers with ethanol. Dalton Trans 2019; 48:12822-12827. [DOI: 10.1039/c9dt01872g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
TiO2 nanofibers with average diameters of ∼70 nm were prepared by direct electrospinning.
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Affiliation(s)
- Brian S. Chapman
- Department of Materials Science and Engineering
- North Carolina State University
- Raleigh
- USA
| | - Sumeet R. Mishra
- Department of Materials Science and Engineering
- North Carolina State University
- Raleigh
- USA
| | - Joseph B. Tracy
- Department of Materials Science and Engineering
- North Carolina State University
- Raleigh
- USA
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16
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Ultrasonic fabrication of flexible antibacterial ZnO nanopillar array film. Colloids Surf B Biointerfaces 2018; 170:172-178. [DOI: 10.1016/j.colsurfb.2018.06.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/29/2018] [Accepted: 06/05/2018] [Indexed: 01/25/2023]
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17
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Chan H, Huang HS, Sun DS, Lee CJ, Lien TS, Chang HH. TRPM8 and RAAS-mediated hypertension is critical for cold-induced immunosuppression in mice. Oncotarget 2018; 9:12781-12795. [PMID: 29560109 PMCID: PMC5849173 DOI: 10.18632/oncotarget.24356] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 01/25/2018] [Indexed: 12/26/2022] Open
Abstract
Mechanisms underlying cold-induced immunosuppression remain unclear. Here we found that cold exposure leads to transient receptor potential melastatin 8 (TRPM8)-dependent, renin–angiotensin–aldosterone system (RAAS)-mediated hypertension, which subsequently induces small molecule and fluid extravasation, increases plasma Ig levels, and elicits immunosuppression. An effect is similar to the clinically-used immunosuppressive treatments of intravenous immunoglobulin (IVIg) against various inflammatory diseases, such as immune thrombocytopenia (ITP). Essential roles of TRPM8 and Ig in cold-induced immunosuppression are supported by the cold-mediated amelioration of ITP and the cold-mediated suppression of bacterial clearance, which were observed in wild-type mice but not in Ig- and TRPM8-deficient mutants. Treatment with antihypertensive drugs aliskiren and losartan drastically reversed high plasma Ig levels and ameliorated cold-induced immunosuppression, indicating the involvement of the RAAS and hypertension. These results indicated that the natively increased plasma Ig level is associated with immunosuppression during periods of cold exposure, and antihypertensive drugs can be useful to manage cold-induced immunosuppression.
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Affiliation(s)
- Hao Chan
- Institute of Medical Sciences, Tzu-Chi University, Hualien, Taiwan
| | - Hsuan-Shun Huang
- Center for Prevention and Therapy of Gynecological Cancers, Department of Research, Buddhist Tzu Chi General Hospital, Hualien, Taiwan
| | - Der-Shan Sun
- Institute of Medical Sciences, Tzu-Chi University, Hualien, Taiwan.,Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien, Taiwan
| | - Chung-Jen Lee
- Department of Nursing, Tzu Chi College of Technology, Hualien, Taiwan
| | - Te-Sheng Lien
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien, Taiwan
| | - Hsin-Hou Chang
- Institute of Medical Sciences, Tzu-Chi University, Hualien, Taiwan.,Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien, Taiwan
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18
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Stoyanova D, Ivanova I, Angelov O, Vladkova T. Antibacterial activity of thin films TiO2 doped with Ag and Cu on Gracilicutes and Firmicutes bacteria. BIODISCOVERY 2017. [DOI: 10.3897/biodiscovery.20.e21596] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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19
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Abstract
Despite an array of cogent antibiotics, bacterial infections, notably those produced by nosocomial pathogens, still remain a leading factor of morbidity and mortality around the globe. They target the severely ill, hospitalized and immunocompromised patients with incapacitated immune system, who are prone to infections. The choice of antimicrobial therapy is largely empirical and not devoid of toxicity, hypersensitivity, teratogenicity and/or mutagenicity. The emergence of multidrug-resistant bacteria further intensifies the clinical predicament as it directly impacts public health due to diminished potency of current antibiotics. In addition, there is an escalating concern with respect to biofilm-associated infections that are refractory to the presently available antimicrobial armory, leaving almost no therapeutic option. Hence, there is a dire need to develop alternate antibacterial agents. The past decade has witnessed a substantial upsurge in the global use of nanomedicines as innovative tools for combating the high rates of antimicrobial resistance. Antibacterial activity of metal and metal oxide nanoparticles (NPs) has been extensively reported. The microbes are eliminated either by microbicidal effects of the NPs, such as release of free metal ions culminating in cell membrane damage, DNA interactions or free radical generation, or by microbiostatic effects coupled with killing potentiated by the host's immune system. This review encompasses the magnitude of multidrug resistance in nosocomial infections, bacterial evasion of the host immune system, mechanisms used by bacteria to develop drug resistance and the use of nanomaterials based on metals to overcome these challenges. The diverse annihilative effects of conventional and biogenic metal NPs for antibacterial activity are also discussed. The use of polymer-based nanomaterials and nanocomposites, alone or functionalized with ligands, antibodies or antibiotics, as alternative antimicrobial agents for treating severe bacterial infections is also discussed. Combinatorial therapy with metallic NPs, as adjunct to the existing antibiotics, may aid to restrain the mounting menace of bacterial resistance and nosocomial threat.
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Affiliation(s)
- Hassan A Hemeg
- Department of Medical Laboratories Technology, Faculty of Applied Medical Sciences, Taibah University, Medina, Kingdom of Saudi Arabia
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20
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Mishra S, Singh BR, Naqvi AH, Singh HB. Potential of biosynthesized silver nanoparticles using Stenotrophomonas sp. BHU-S7 (MTCC 5978) for management of soil-borne and foliar phytopathogens. Sci Rep 2017; 7:45154. [PMID: 28345581 PMCID: PMC5366874 DOI: 10.1038/srep45154] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 02/21/2017] [Indexed: 01/23/2023] Open
Abstract
Stenotrophomonas sp. is emerging as a popular microbe of global concern with various potential ecological roles. Biosynthesis of gold and silver nanoparticles (AgNPs) using this bacterial strain has shown promising applications in life sciences. However, there is no report on efficient agricultural applications of biosynthesized AgNPs using Stenotrophomonas sp. In this regard, successful biosynthesis of AgNPs using Stenotrophomonas sp. BHU-S7 (MTCC 5978) was monitored by Uv-visible spectrum showing surface plasmon resonance (SPR) peak at 440 nm. The biosynthesized AgNPs were spherical with an average mean size of ~12 nm. The antifungal efficacy of biosynthesized AgNPs against foliar and soil-borne phytopathogens was observed. The inhibitory impact of AgNPs (2, 4, 10 μg/ml) on conidial germination was recorded under in vitro conditions. Interestingly, sclerotia of Sclerotium rolfsii exposed to AgNPs failed to germinate on PDA medium and in soil system. Moreover, AgNPs treatment successfully managed collar rot of chickpea caused by S. rolfsii under greenhouse conditions. The reduced sclerotia germination, phenolic acids induction, altered lignification and H2O2 production was observed to be the probable mechanisms providing protection to chickpea against S. rolfsii. Our data revealed that AgNPs treated plants are better equipped to cope with pathogen challenge pointing towards their robust applications in plant disease management.
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Affiliation(s)
- Sandhya Mishra
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Braj Raj Singh
- Centre of Excellence in Materials Science (Nanomaterials), Department of Applied Physics, Z. H. College of Engineering and Technology, Aligarh Muslim University, Aligarh, India
| | - Alim H. Naqvi
- Centre of Excellence in Materials Science (Nanomaterials), Department of Applied Physics, Z. H. College of Engineering and Technology, Aligarh Muslim University, Aligarh, India
| | - H. B. Singh
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, 221005, India
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Kumar A, Balbach J. Targeting the molecular chaperone SlyD to inhibit bacterial growth with a small molecule. Sci Rep 2017; 7:42141. [PMID: 28176839 PMCID: PMC5296862 DOI: 10.1038/srep42141] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 01/03/2017] [Indexed: 12/23/2022] Open
Abstract
Molecular chaperones are essential molecules for cell growth, whereby they maintain protein homeostasis. Because of their central cellular function, bacterial chaperones might be potential candidates for drug targets. Antimicrobial resistance is currently one of the greatest threats to human health, with gram-negative bacteria being of major concern. We found that a Cu2+ complex readily crosses the bacterial cell wall and inhibits SlyD, which is a molecular chaperone, cis/trans peptidyl prolyl isomerise (PPIase) and involved in various other metabolic pathways. The Cu2+ complex binds to the active sites of SlyD, which suppresses its PPIase and chaperone activities. Significant cell growth retardation could be observed for pathogenic bacteria (e.g., Staphylococcus aureus and Pseudomonas aeruginosa). We anticipate that rational development of drugs targeting molecular chaperones might help in future control of pathogenic bacterial growth, in an era of rapidly increasing antibiotic resistance.
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Affiliation(s)
- Amit Kumar
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
- Institute of Physics, Biophysics, Martin Luther University, Halle, Wittenberg, Germany
| | - Jochen Balbach
- Institute of Physics, Biophysics, Martin Luther University, Halle, Wittenberg, Germany
- Centre for Structure und Dynamics of Proteins (MZP), Martin Luther University Halle, Wittenberg, Germany
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Visible Light-Responsive Platinum-Containing Titania Nanoparticle-Mediated Photocatalysis Induces Nucleotide Insertion, Deletion and Substitution Mutations. NANOMATERIALS 2016; 7:nano7010002. [PMID: 28336836 PMCID: PMC5295192 DOI: 10.3390/nano7010002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 12/08/2016] [Accepted: 12/22/2016] [Indexed: 12/22/2022]
Abstract
Conventional photocatalysts are primarily stimulated using ultraviolet (UV) light to elicit reactive oxygen species and have wide applications in environmental and energy fields, including self-cleaning surfaces and sterilization. Because UV illumination is hazardous to humans, visible light-responsive photocatalysts (VLRPs) were discovered and are now applied to increase photocatalysis. However, fundamental questions regarding the ability of VLRPs to trigger DNA mutations and the mutation types it elicits remain elusive. Here, through plasmid transformation and β-galactosidase α-complementation analyses, we observed that visible light-responsive platinum-containing titania (TiO2) nanoparticle (NP)-mediated photocatalysis considerably reduces the number of Escherichia coli transformants. This suggests that such photocatalytic reactions cause DNA damage. DNA sequencing results demonstrated that the DNA damage comprises three mutation types, namely nucleotide insertion, deletion and substitution; this is the first study to report the types of mutations occurring after photocatalysis by TiO2-VLRPs. Our results may facilitate the development and appropriate use of new-generation TiO2 NPs for biomedical applications.
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Antibacterial Properties of Visible-Light-Responsive Carbon-Containing Titanium Dioxide Photocatalytic Nanoparticles against Anthrax. NANOMATERIALS 2016; 6:nano6120237. [PMID: 28335365 PMCID: PMC5302719 DOI: 10.3390/nano6120237] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 11/28/2016] [Accepted: 12/06/2016] [Indexed: 01/12/2023]
Abstract
The bactericidal activity of conventional titanium dioxide (TiO2) photocatalyst is effective only on irradiation by ultraviolet light, which restricts the applications of TiO2 for use in living environments. Recently, carbon-containing TiO2 nanoparticles [TiO2(C) NP] were found to be a visible-light-responsive photocatalyst (VLRP), which displayed significantly enhanced antibacterial properties under visible light illumination. However, whether TiO2(C) NPs exert antibacterial properties against Bacillus anthracis remains elusive. Here, we evaluated these VLRP NPs in the reduction of anthrax-induced pathogenesis. Bacteria-killing experiments indicated that a significantly higher proportion (40%–60%) of all tested Bacillus species, including B. subtilis, B. cereus, B. thuringiensis, and B. anthracis, were considerably eliminated by TiO2(C) NPs. Toxin inactivation analysis further suggested that the TiO2(C) NPs efficiently detoxify approximately 90% of tested anthrax lethal toxin, a major virulence factor of anthrax. Notably, macrophage clearance experiments further suggested that, even under suboptimal conditions without considerable bacterial killing, the TiO2(C) NP-mediated photocatalysis still exhibited antibacterial properties through the reduction of bacterial resistance against macrophage killing. Our results collectively suggested that TiO2(C) NP is a conceptually feasible anti-anthrax material, and the relevant technologies described herein may be useful in the development of new strategies against anthrax.
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Zhang C, Hu Z, Li P, Gajaraj S. Governing factors affecting the impacts of silver nanoparticles on wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 572:852-873. [PMID: 27542630 DOI: 10.1016/j.scitotenv.2016.07.145] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 07/20/2016] [Accepted: 07/20/2016] [Indexed: 05/22/2023]
Abstract
Silver nanoparticles (nanosilver or AgNPs) enter municipal wastewater from various sources, raising concerns about their potential adverse effects on wastewater treatment processes. We argue that the biological effects of silver nanoparticles at environmentally realistic concentrations (μgL-1 or lower) on the performance of a full-scale municipal water resource recovery facility (WRRF) are minimal. Reactor configuration is a critical factor that reduces or even mutes the toxicity of silver nanoparticles towards wastewater microbes in a full-scale WRRF. Municipal sewage collection networks transform silver nanoparticles into silver(I)-complexes/precipitates with low ecotoxicity, and preliminary/primary treatment processes in front of biological treatment utilities partially remove silver nanoparticles to sludge. Microbial functional redundancy and microbial adaptability to silver nanoparticles also greatly alleviate the adverse effects of silver nanoparticles on the performance of a full-scale WRRF. Silver nanoparticles in a lab-scale bioreactor without a sewage collection system and/or a preliminary/primary treatment process, in contrast to being in a full scale system, may deteriorate the reactor performance at relatively high concentrations (e.g., mgL-1 levels or higher). However, in many cases, silver nanoparticles have minimal impacts on lab-scale bioreactors, such as sequencing batch bioreactors (SBRs), especially when at relatively low concentrations (e.g., less than 1mgL-1). The susceptibility of wastewater microbes to silver nanoparticles is species-specific. In general, silver nanoparticles have higher toxicity towards nitrifying bacteria than heterotrophic bacteria.
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Affiliation(s)
- Chiqian Zhang
- Department of Civil and Environmental Engineering, University of Missouri, Columbia, MO 65211, USA.
| | - Zhiqiang Hu
- Department of Civil and Environmental Engineering, University of Missouri, Columbia, MO 65211, USA
| | - Ping Li
- College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Shashikanth Gajaraj
- Department of Civil and Environmental Engineering, University of Missouri, Columbia, MO 65211, USA
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Garvey M, Panaitescu E, Menon L, Byrne C, Dervin S, Hinder SJ, Pillai SC. Titania nanotube photocatalysts for effectively treating waterborne microbial pathogens. J Catal 2016. [DOI: 10.1016/j.jcat.2016.11.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ramasamy M, Lee J. Recent Nanotechnology Approaches for Prevention and Treatment of Biofilm-Associated Infections on Medical Devices. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1851242. [PMID: 27872845 PMCID: PMC5107826 DOI: 10.1155/2016/1851242] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 10/13/2016] [Indexed: 11/23/2022]
Abstract
Bacterial colonization in the form of biofilms on surfaces causes persistent infections and is an issue of considerable concern to healthcare providers. There is an urgent need for novel antimicrobial or antibiofilm surfaces and biomedical devices that provide protection against biofilm formation and planktonic pathogens, including antibiotic resistant strains. In this context, recent developments in the material science and engineering fields and steady progress in the nanotechnology field have created opportunities to design new biomaterials and surfaces with anti-infective, antifouling, bactericidal, and antibiofilm properties. Here we review a number of the recently developed nanotechnology-based biomaterials and explain underlying strategies used to make antibiofilm surfaces.
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Affiliation(s)
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
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Sun DS, Ho PH, Chang HH. Soluble P-selectin rescues viper venom-induced mortality through anti-inflammatory properties and PSGL-1 pathway-mediated correction of hemostasis. Sci Rep 2016; 6:35868. [PMID: 27779216 PMCID: PMC5078805 DOI: 10.1038/srep35868] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 10/03/2016] [Indexed: 01/24/2023] Open
Abstract
Venomous snakebites are lethal and occur frequently worldwide each year, and receiving the antivenom antibody is currently the most effective treatment. However, the specific antivenom might be unavailable in remote areas. Snakebites by Viperidae usually lead to hemorrhage and mortality if untreated. In the present study, challenges of rattlesnake (Crotalus atrox) venom markedly increased the circulating soluble P-selectin (sP-sel) level, but not P-selectin (P-sel, Selp−/−) mutants, in wild-type mice. Because sP-sel enhances coagulation through the P-selectin ligand 1 (PSGL-1, Selplg) pathway to produce tissue factor–positive microparticles, we hypothesized that increasing the plasma sP-sel level can be a self-rescue response in hosts against snake venom–mediated suppression of the coagulation system. Confirming our hypothesis, our results indicated that compared with wild-type mice, Selp−/− and Selplg−/− mice were more sensitive to rattlesnake venom. Additionally, administration of recombinant sP-sel could effectively reduce the mortality rate of mice challenged with venoms from three other Viperidae snakes. The antivenom property of sP-sel is associated with improved coagulation activity in vivo. Our data suggest that the elevation of endogenous sP-sel level is a self-protective response against venom-suppressed coagulation. The administration of recombinant sP-sel may be developed as a new strategy to treat Viperidae snakebites.
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Affiliation(s)
- Der-Shan Sun
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien 970, Taiwan.,Center for Vascular Medicine, Tzu-Chi University, Hualien 970, Taiwan
| | - Pei-Hsun Ho
- Center for Vascular Medicine, Tzu-Chi University, Hualien 970, Taiwan
| | - Hsin-Hou Chang
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien 970, Taiwan.,Center for Vascular Medicine, Tzu-Chi University, Hualien 970, Taiwan
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28
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Ashraf JM, Ansari MA, Khan HM, Alzohairy MA, Choi I. Green synthesis of silver nanoparticles and characterization of their inhibitory effects on AGEs formation using biophysical techniques. Sci Rep 2016; 6:20414. [PMID: 26829907 PMCID: PMC4735866 DOI: 10.1038/srep20414] [Citation(s) in RCA: 151] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 01/04/2016] [Indexed: 11/24/2022] Open
Abstract
Advanced glycation end-products (AGEs) resulting from non-enzymatic glycation are one of the major factors implicated in secondary complications of diabetes. Scientists are focusing on discovering new compounds that may be used as potential AGEs inhibitors without affecting the normal structure and function of biomolecules. A number of natural and synthetic compounds have been proposed as AGE inhibitors. In this study, we investigated the inhibitory effects of AgNPs (silver nanoparticles) in AGEs formation. AgNPs (~30.5 nm) synthesized from Aloe Vera leaf extract were characterized using UV-Vis spectroscopy, energy-dispersive X-ray spectroscopy (EDX), high resolution-transmission electron microscopy, X-ray diffraction and dynamic light scattering (DLS) techniques. The inhibitory effects of AgNPs on AGEs formation were evaluated by investigating the degree of reactivity of free amino groups (lysine and arginine residues), protein-bound carbonyl and carboxymethyl lysine (CML) content, and the effects on protein structure using various physicochemical techniques. The results showed that AgNPs significantly inhibit AGEs formation in a concentration dependent manner and that AgNPs have a positive effect on protein structure. These findings strongly suggest that AgNPs may play a therapeutic role in diabetes-related complications.
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Affiliation(s)
| | - Mohammad Azam Ansari
- Nanotechnology and Antimicrobial Drug Resistance Research Laboratory, Department of Microbiology, Jawaharlal Nehru Medical College & Hospital, Aligarh Muslim University, Aligarh-202002, U.P., India
- Department of Medical Laboratories, College of Applied Medical Science, Buraydah Colleges, Buraydah 51452, Saudi Arabia
| | - Haris M. Khan
- Nanotechnology and Antimicrobial Drug Resistance Research Laboratory, Department of Microbiology, Jawaharlal Nehru Medical College & Hospital, Aligarh Muslim University, Aligarh-202002, U.P., India
| | - Mohammad A. Alzohairy
- Department of Medical Laboratories, College of Applied Medical Science, Buraydah Colleges, Buraydah 51452, Saudi Arabia
- Department of Medical Laboratories, College of Medical Science, Qassim University, Saudi Arabia
| | - Inho Choi
- School of Biotechnology, Yeungnam University, Gyeongsan, Republic of Korea
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29
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Li D, Dong M, Besenbacher F, Huang Y, Chen M. The preparation of a recyclable catalyst of silver nanoparticles dispersed in a mesoporous silica nanofiber matrix. RSC Adv 2016. [DOI: 10.1039/c6ra10867a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A recyclable catalyst of sliver nanoparticles well dispersed in mesoporous silica was successfully synthesized via a straight-forward strategy combining an electrospinning technique with post-calcination.
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Affiliation(s)
- Dalong Li
- Interdisciplinary Nanoscience Center (iNANO)
- Aarhus University
- Aarhus C
- Denmark
- School of Chemical Engineering and Technology
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center (iNANO)
- Aarhus University
- Aarhus C
- Denmark
| | | | - Yudong Huang
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin
- China
| | - Menglin Chen
- Interdisciplinary Nanoscience Center (iNANO)
- Aarhus University
- Aarhus C
- Denmark
- Department of Engineering
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