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Althobaiti NA. Heavy metals exposure and Alzheimer's disease: Underlying mechanisms and advancing therapeutic approaches. Behav Brain Res 2024:115212. [PMID: 39187176 DOI: 10.1016/j.bbr.2024.115212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 08/19/2024] [Accepted: 08/19/2024] [Indexed: 08/28/2024]
Abstract
Heavy metals such as lead, cadmium, mercury, and arsenic are prevalent in the environment due to both natural and anthropogenic sources, leading to significant public health concerns. These heavy metals are known to cause damage to the nervous system, potentially leading to a range of neurological conditions including Alzheimer's disease (AD), Parkinson's disease (PD), amyotrophic lateral sclerosis (ALS), multiple sclerosis (MS), and attention-deficit hyperactivity disorder (ADHD). The present study examines the complex relationship between heavy metal exposure and AD, focusing on the underlying mechanisms of toxicity and potential therapeutic approaches. This review article highlights how these metals can impair brain function through mechanisms such as oxidative stress, inflammation, and neurotransmitter disruption, ultimately contributing to neurodegenerative diseases like AD. It also addresses the challenges in diagnosing heavy metal-induced cognitive impairments and emphasizes the need for further research to explore effective treatment strategies and preventive measures against heavy metal exposure.
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Affiliation(s)
- Norah A Althobaiti
- Biology Department, College of Science and Humanities, Al Quwaiiyah, Shaqra University, Al Quwaiiyah 19257, Saudi Arabia.
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2
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Basaran B, Turk H. The levels, single and multiple health risk assessment of 23 metals in enteral nutrition formulas. Food Chem Toxicol 2024; 192:114914. [PMID: 39127122 DOI: 10.1016/j.fct.2024.114914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2024] [Revised: 08/06/2024] [Accepted: 08/07/2024] [Indexed: 08/12/2024]
Abstract
Enteral nutrition formulas are products that provide macro and micronutrients to patients who cannot receive their nutrition orally. In this study, the levels of 23 metals known to have potential health risks were determined by inductively coupled plasma mass spectrometry in a total of 28 enteral nutrition formula. Metal exposure was calculated according to three different daily energy intake scenarios (Scenario 1 = 50% oral nutrition + 50% enteral nutrition formula, Scenario 2 = 25% oral nutrition + 75% enteral nutrition formula and Scenario 3 = 100% enteral nutrition formula) and evaluated in terms of non-carcinogenic health risks. The mean levels of Fe, Co, Ni, Cu, Zn, Mo, Se, Li, Be, V, As, Sr, Ag, Cd, Sb, Ba, La, Hg and Pb in the samples analyzed were determined 12,000 ± 3300, 64 ± 1.6, 10 ± 13, 1300 ± 400, 8500 ± 2500, 75 ± 30, 61 ± 21, 0.34 ± 0.36, 0.05 ± 0.08, 7.3 ± 2, 1.6 ± 0.6, 457 ± 166, 0.02 ± 0.1, 0.14 ± 0.12, 0.01 ± 0.1, 74 ± 103, 0.63 ± 0.4, 0.05 ± 0.03 and 0.14 ± 0.7 μg/L. These metals were considered safe in terms of non-carcinogenic health risks when analyzed individually. However, when the target hazard quotient values of all metals were evaluated together, hazard index values were higher than the reference value of 1, for both men and women, indicating potential health risks.
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Affiliation(s)
- Burhan Basaran
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Recep Tayyip Erdogan University, Rize, 53100, Türkiye.
| | - Hulya Turk
- Department of Biology, Science Faculty, Ataturk University, Erzurum, 25240, Türkiye
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3
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Alshammari H, Neilands J, Jeppesen CS, Almtoft KP, Andersen OZ, Stavropoulos A. Antimicrobial Potential of Strontium-Functionalized Titanium Against Bacteria Associated With Peri-Implantitis. Clin Exp Dent Res 2024; 10:e903. [PMID: 39031165 PMCID: PMC11258639 DOI: 10.1002/cre2.903] [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: 11/25/2023] [Accepted: 12/30/2023] [Indexed: 07/22/2024] Open
Abstract
OBJECTIVES To explore the antimicrobial potential of strontium (Sr)-functionalized wafers against multiple bacteria associated with per-implant infections, in both mono- and multispecies biofilms. MATERIALS AND METHODS The bactericidal and bacteriostatic effect of silicon wafers functionalized with a strontium titanium oxygen coating (Sr-Ti-O) or covered only with Ti (controls) against several bacteria, either grown as a mono-species or multispecies biofilms, was assessed using a bacterial viability assay and a plate counting method. Mono-species biofilms were assessed after 2 and 24 h, while the antimicrobial effect on multispecies biofilms was assessed at Days 1, 3, and 6. The impact of Sr functionalization on the total percentage of Porphyromonas gingivalis in the multispecies biofilm, using qPCR, and gingipain activity was also assessed. RESULTS Sr-functionalized wafers, compared to controls, were associated with statistically significant less viable cells in both mono- and multispecies tests. The number of colony forming units (CFUs) within the biofilm was significantly less in Sr-functionalized wafers, compared to control wafers, for Staphylococcus aureus at all time points of evaluation and for Escherichia coli at Day 1. Gingipain activity was less in Sr-functionalized wafers, compared to control wafers, and the qPCR showed that P. gingivalis remained below detection levels at Sr-functionalized wafers, while it consisted of 15% of the total biofilm on control wafers at Day 6. CONCLUSION Sr functionalization displayed promising antimicrobial potential, possessing bactericidal and bacteriostatic ability against bacteria associated with peri-implantitis grown either as mono-species or mixed in a multispecies consortium with several common oral microorganisms.
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Affiliation(s)
- Hatem Alshammari
- Department of Preventive Dentistry, College of DentistryUniversity of HailHailSaudi Arabia
- Periodontology, Faculty of OdontologyUniversity of MalmöMalmöSweden
| | - Jessica Neilands
- Department of Oral Biology, Faculty of OdontologyUniversity of MalmöMalmöSweden
| | | | | | - Ole Zoffmann Andersen
- Department of PeriodontologyUniversity of BernBernSwitzerland
- Institute Straumann AGBaselSwitzerland
| | - Andreas Stavropoulos
- Periodontology, Faculty of OdontologyUniversity of MalmöMalmöSweden
- Department of PeriodontologyUniversity of BernBernSwitzerland
- Division of Conservative Dentistry and PeriodontologyUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
- Department of PeriodontologyBlekinge HospitalKarlskronaSweden
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4
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Arputharaj E, Singh S, Huang YH, Wu YR, Perumal K, Periyasami G, Chao YY, Dahms HU, Huang YL. Switchable metal extractant integrated miniaturized 3D-printed device: A semi-online multi-metal separation system for matrix-free ICP-MS analysis. Anal Chim Acta 2024; 1310:342672. [PMID: 38811131 DOI: 10.1016/j.aca.2024.342672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 04/21/2024] [Accepted: 05/01/2024] [Indexed: 05/31/2024]
Abstract
BACKGROUND This study tackles the critical challenges in metal analysis by presenting an innovative miniaturized metal extraction device prototype. This device features a functional nanocomposite (FNC) enhanced 3D-printed polylactic acid (PLA) metal extractant (FNC@3D PLA). The research is motivated by the constraints of traditional solid-phase extraction (SPE) methods, specifically their limitations in handling competitive metal ion environments and matrix interference during inductively coupled plasma mass spectrometry (ICP-MS) analysis. The designed prototype aims to overcome these challenges and enhance the extraction efficiency of diverse metals. RESULTS The FNC, designed to incorporate various functional groups critical for metal ion extraction efficiency, was meticulously engineered through the reaction of acid-treated and delaminated graphitic carbon nitride nanosheets (Thiol-gCN NSs) with 3-mercaptopropyl trimethoxysilane (MPTMS). The competitive metal ion extraction efficiency of FNC@3D PLA was demonstrated, showcasing notable limit of detection values of 3.2 ± 0.7 ng mL-1 and 8.57 ± 3.05 ng mL-1 for Cu and Ag, respectively. Furthermore, the miniaturized 3D-printed metal-preconcentration setup incorporating FNC@3D PLA exhibited favorable intraday relative standard deviation (RSD) percentage (%) values ranging from 1.23 to 8.6 for both Cu and Ag. Interday RSD % between 1.41 and 8.14 were observed under spiked real urine sample conditions. The sustainability and robustness of the proposed approach were underscored by substantial recovery % values exhibited by FNC@3D PLA, even after eight consecutive regeneration processes. SIGNIFICANCE This study significantly contributes to the advancement of analytical methodologies by providing a reliable and efficient platform for metal extraction and preconcentration in practical metal analysis applications. Developed FNC@3D PLA system demonstrates its potential to address the challenges associated with SPE in metal analysis, especially in complex sample matrices. We believe implications of this research can be extended to various fields, from environmental monitoring to clinical diagnostics, where accurate and reliable metal analysis is paramount.
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Affiliation(s)
- Emmanuvel Arputharaj
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Shivangi Singh
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yu-Hui Huang
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - You-Rong Wu
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Karthikeyan Perumal
- Department of Chemistry and Biochemistry, The Ohio State University, 170A CBEC, 151 Woodruff Avenue, Columbus, Ohio 43210, USA
| | - Govindasami Periyasami
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh-11451, Saudi Arabia
| | - Yu-Ying Chao
- Department of Public Health, Kaohsiung Medical University, Kaohsiung, Taiwan; Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hans-Uwe Dahms
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan; Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, Taiwan.
| | - Yeou-Lih Huang
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan; Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; College of Professional Studies, National Pingtung University of Science and Technology, Pingtung, Taiwan; Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan.
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Nagaiah HP, Periyakaruppan Murugesan PD, Ravindra Rupali CV, Shunmugiah KP. Pioneering Topical Ointment Intervention for Unprecedented Antimicrobial and Diabetic Wound Management with Phenylpropanoids and Nano-Silver. AAPS J 2024; 26:67. [PMID: 38862870 DOI: 10.1208/s12248-024-00936-4] [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: 02/01/2024] [Accepted: 05/20/2024] [Indexed: 06/13/2024] Open
Abstract
Addressing the intertwined challenges of antimicrobial resistance and impaired wound healing in diabetic patients, an oil/water emulsion-based nano-ointment integrating phenylpropanoids-Eugenol and Cinnamaldehyde-with positively-charged silver nanoparticles was synthesized. The process began with the synthesis and characterization of nano-silver, aimed at ensuring the effectiveness and safety of the nanoparticles in biological applications. Subsequent experiments determined the minimum inhibitory concentration (MIC) against pathogens such as Streptococcus aureus, Pseudomonas aeruginosa and Candida albicans. These MIC values of all three active leads guided the strategic formulation of an ointment base, which effectively integrated the bioactive components. Evaluations of this nano-ointment revealed enhanced antimicrobial activity against both clinical and reference bacterial strains and it maintained stability after freeze-thaw cycles. Furthermore, the ointment demonstrated superior in-vitro diabetic wound healing capabilities and significantly promoted angiogenesis, as shown by enhanced blood vessel formation in the Chorioallantoic Membrane assay. These findings underscore the formulation's therapeutic potential, marking a significant advance in the use of nanotechnology for topical wound care.
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6
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Abo-Salem HM, Ali EA, Abdelmegeed H, El Souda SSM, Abdel-Aziz MS, Ahmed KM, Fawzy NM. Chitosan nanoparticles of new chromone-based sulfonamide derivatives as effective anti-microbial matrix for wound healing acceleration. Int J Biol Macromol 2024; 272:132631. [PMID: 38810852 DOI: 10.1016/j.ijbiomac.2024.132631] [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: 01/30/2024] [Revised: 05/02/2024] [Accepted: 05/22/2024] [Indexed: 05/31/2024]
Abstract
A new series of chromone and furochromone-based sulfonamide Schiff's base derivatives 3-12 were synthesized and evaluated for their antimicrobial activity against S. aureus, E. coli, C. albicans, and A. niger using agar diffusion method. Compound 3a demonstrated potent antimicrobial activities with MIC values of 9.76 and 19.53 μg/mL against S. aureus, E. coli and C. albicans, which is 2-fold and 4-fold more potent than neomycin (MIC = 19.53, 39.06 μg/mL respectively). To improve the effectiveness of 3a, it was encapsulated into chitosan nanoparticles (CS-3aNPs). The CS-3aNPs size was 32.01 nm, as observed by transmission electron microscope (TEM) images and the zeta potential value was 14.1 ± 3.07 mV. Encapsulation efficiency (EE) and loading capacity (LC) were 91.5 % and 1.6 %, respectively as indicated by spectral analysis. The CS-3aNPs extremely inhibited bacterial growth utilizing the colony-forming units (CFU). The ability of CS-3aNPs to protect skin wounds was evaluated in vivo. CS-3aNPs showed complete wound re-epithelialization, hyperplasia of the epidermis, well-organized granulation tissue formation, and reduced signs of wound infection, as seen through histological assessment which showed minimal inflammatory cells in comparison with untreated wound. Overall, these findings suggest that CS-3aNPs has a positive impact on protecting skin wounds from infection due to their antimicrobial activity.
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Affiliation(s)
- Heba M Abo-Salem
- Chemistry of Natural Compounds Department, National Research Centre, 12622 Dokki, Giza, Egypt.
| | - Eman AboBakr Ali
- Polymers and Pigments Department, National Research Centre, 12622 Dokki, Giza, Egypt
| | - Heba Abdelmegeed
- Chemistry of Natural Compounds Department, National Research Centre, 12622 Dokki, Giza, Egypt
| | - Sahar S M El Souda
- Chemistry of Natural Compounds Department, National Research Centre, 12622 Dokki, Giza, Egypt
| | - Mohamed S Abdel-Aziz
- Microbial Chemistry Department, Biotechnology Research Institute, National Research Centre, 12622 Dokki, Giza, Egypt
| | - Khadiga M Ahmed
- Chemistry of Natural Compounds Department, National Research Centre, 12622 Dokki, Giza, Egypt
| | - Nagwa M Fawzy
- Chemistry of Natural and Microbial Products Department, National Research Center, 12622 Dokki, Giza, Egypt.
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7
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Lőrincz A, Nudelman H, Lamberti AG, Garami A, Tiborcz KA, Kovács TZ, Józsa G. Management of Pediatric Superficial Partial-Thickness Burns with Polyhexamethylene Biguanide: Outcomes and Influencing Factors. J Clin Med 2024; 13:3074. [PMID: 38892785 PMCID: PMC11173300 DOI: 10.3390/jcm13113074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/28/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024] Open
Abstract
Background: In burn care, achieving swift healing with minimal complications remains paramount. This investigation assesses the role of polyhexamethylene biguanide (PHMB) in managing pediatric superficial partial-thickness burns, focusing on the effects of various patient-specific factors on recovery. Methods: Through a retrospective analysis of 27 pediatric cases treated with PHMB, we evaluated the impact of age, burn size, dressing frequency, treatment delay, cold therapy application, and analgesic usage on the time until reepithelialization (TTRE). Results: The majority of patients benefited from early cold therapy, yet only 1 in 3 patients received analgesics. A mean healing time of 8.78 (SD: 2.64) days was observed, with the extent of the burn showing a strong correlation (r: 0.63) to TTRE. Most treatments were managed outpatient, evidenced by a negligible average hospital stay (0.96 days), with recorded no complications. Conclusions: Our findings endorse PHMB as a promising treatment for superficial second-degree burns in young patients, due to the observed stable and rapid wound closure without the association of increased risks. Continued exploration into the optimal application of prehospital interventions and the comprehensive benefits of PHMB in pediatric burn management is necessary. Future research should assess long-term outcomes, including functionality, scar quality, and patient satisfaction.
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Affiliation(s)
- Aba Lőrincz
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pécs, 12 Szigeti Street, H7624 Pécs, Hungary; (A.L.); (H.N.); (A.G.L.); (A.G.)
| | - Hermann Nudelman
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pécs, 12 Szigeti Street, H7624 Pécs, Hungary; (A.L.); (H.N.); (A.G.L.); (A.G.)
| | - Anna Gabriella Lamberti
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pécs, 12 Szigeti Street, H7624 Pécs, Hungary; (A.L.); (H.N.); (A.G.L.); (A.G.)
- Division of Pediatric Surgery, Traumatology, Urology and Pediatric Otolaryngology, Department of Pediatrics, Medical School, University of Pécs, 7 József Attila Street, H7623 Pécs, Hungary
| | - András Garami
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pécs, 12 Szigeti Street, H7624 Pécs, Hungary; (A.L.); (H.N.); (A.G.L.); (A.G.)
| | - Krisztina Adrienne Tiborcz
- Pediatric Surgery Unit, Szent-Györgyi Albert Pediatric Clinic and Children’s Health Center, University of Szeged, 14–15 Korányi Avenue, H6721 Szeged, Hungary; (K.A.T.); (T.Z.K.)
| | - Tamás Zoltán Kovács
- Pediatric Surgery Unit, Szent-Györgyi Albert Pediatric Clinic and Children’s Health Center, University of Szeged, 14–15 Korányi Avenue, H6721 Szeged, Hungary; (K.A.T.); (T.Z.K.)
| | - Gergő Józsa
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pécs, 12 Szigeti Street, H7624 Pécs, Hungary; (A.L.); (H.N.); (A.G.L.); (A.G.)
- Division of Pediatric Surgery, Traumatology, Urology and Pediatric Otolaryngology, Department of Pediatrics, Medical School, University of Pécs, 7 József Attila Street, H7623 Pécs, Hungary
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Redolfi-Bristol D, Yamamoto K, Marin E, Zhu W, Mazda O, Riello P, Pezzotti G. Exploring the cellular antioxidant mechanism against cytotoxic silver nanoparticles: a Raman spectroscopic analysis. NANOSCALE 2024; 16:9985-9997. [PMID: 38695726 DOI: 10.1039/d4nr00462k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Silver nanoparticles (AgNPs) hold great promise for several different applications, from colorimetric sensors to antimicrobial agents. Despite their widespread incorporation in consumer products, limited understanding of the detrimental effects and cellular antioxidant responses associated with AgNPs at sublethal concentrations persists, raising concerns for human and ecological well-being. To address this gap, we synthesized AgNPs of varying sizes and evaluated their cytotoxicity against human dermal fibroblasts (HDF). Our study revealed that toxicity of AgNPs is a time- and size-dependent process, even at low exposure levels. AgNPs exhibited low short-term cytotoxicity but high long-term impact, particularly for the smallest NPs tested. Raman microspectroscopy was employed for in-time investigations of intracellular molecular variations during the first 24 h of exposure to AgNPs of 35 nm. Subtle protein and lipid degradations were detected, but no discernible damage to the DNA was observed. Signals associated with antioxidant proteins, such as superoxide dismutase (SOD), catalase (CAT) and metallothioneins (MTs), increased over time, reflecting the heightened production of these defense agents. Fluorescence microscopy further confirmed the efficacy of overexpressed antioxidant proteins in mitigating ROS formation during short-term exposure to AgNPs. This work provides valuable insights into the molecular changes and remedial strategies within the cellular environment, utilizing Raman microspectroscopy as an advanced analytical technique. These findings offer a novel perspective on the cytotoxicity mechanism of AgNPs, contributing to the development of safer materials and advice on regulatory guidelines for their biomedical applications.
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Affiliation(s)
- Davide Redolfi-Bristol
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8585, Kyoto, Japan.
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari di Venezia, Via Torino 155, 30172 Venezia, Italy
| | - Kenta Yamamoto
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Elia Marin
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8585, Kyoto, Japan.
- Department Polytechnic of Engineering and Architecture, University of Udine, 33100, Udine, Italy
- Biomedical Research Center, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
| | - Wenliang Zhu
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8585, Kyoto, Japan.
| | - Osam Mazda
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Pietro Riello
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari di Venezia, Via Torino 155, 30172 Venezia, Italy
| | - Giuseppe Pezzotti
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8585, Kyoto, Japan.
- Department of Molecular Genetics, Institute of Biomedical Science, Kansai Medical University, 2-5-1 Shinmachi, Hiraka-ta, Osaka 573-1010, Japan
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
- Department of Orthopedic Surgery, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-ku, 160-0023 Tokyo, Japan
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari di Venezia, Via Torino 155, 30172 Venezia, Italy
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9
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Bakitian F, Alshammari H, Youssef AR, Hawsawi RA, Alreshedi AD, Alkhashram MA. Evaluation of Adhesion and Viability of Human Gingival Fibroblasts on Strontium-Coated Titanium Surfaces: an in vitro Study. Clin Cosmet Investig Dent 2024; 16:127-134. [PMID: 38765692 PMCID: PMC11100966 DOI: 10.2147/ccide.s462763] [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: 02/14/2024] [Accepted: 05/09/2024] [Indexed: 05/22/2024] Open
Abstract
Background Applying multifunctional coatings employing strontium (Sr) ions on titanium (Ti) surfaces is a useful and biocompatible method to improve osseointegration and prevent tissue infections through antimicrobial activity. Nonetheless, the effectiveness of Sr coating on the adhesion and viability of human gingival fibroblasts (HGFs) to Ti surfaces remains unclear. Purpose The study aimed to evaluate the effect of Sr coating on the adhesion and viability of HGFs to Ti surfaces. Materials and Methods The Ti wafers were divided into two groups based on Sr coating: uncoated Ti (control) and Sr-coated Ti. The Magnetron sputtering technique was used for Sr coating on Ti surfaces. The HGFs were seeded onto the surfaces and cultured for 48 and 96 hours before the cell adhesion and viability of the attached HGFs were assessed. The adhesion of HGFs was analyzed using the attached cell numbers at 48 h and 96 h, and the morphology at 24 h and 72 h. The cytotoxic effect on HGFs was assessed after 24 and 72 hours of incubation using cell viability assay. Student's t-test was used for statistical analysis. Results The number of cells attached to Sr-coated surfaces was significantly greater than those attached to uncoated Ti surfaces after 48 hours (P<0.0001) and 96 hours (P=0.0002). Sr-coated and uncoated Ti surfaces were not cytotoxic to HGFs, with the cell viability ranging from 92% to 105% of the untreated control HGFs. There were no significant differences in cell viability between Sr-coated and uncoated Ti surfaces at 24 hours (P=0.3675) and 72 hours (P=0.0982). Conclusion Sr-coated Ti surfaces induce adhesion of HGFs compared to uncoated Ti surfaces. Further, Sr-coated and uncoated Ti surfaces show no cytotoxic effect on the attached HGFs.
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Affiliation(s)
- Fahad Bakitian
- Department of Restorative Dentistry, Faculty of Dentistry, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Hatem Alshammari
- Department of Preventive Dentistry, College of Dentistry, University of Hail, Hail, Saudi Arabia
| | - Abdel-Rahman Youssef
- Department of Basic and Clinical Oral Sciences, Faculty of Dentistry, Umm Al-Qura University, Makkah, Saudi Arabia
- Department of Microbiology and Immunology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Rayan A Hawsawi
- Department of Restorative Dentistry, Faculty of Dentistry, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Anwar Doufan Alreshedi
- Department of Preventive Dentistry, College of Dentistry, University of Hail, Hail, Saudi Arabia
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10
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Esarev IV, Karge B, Zeng H, Lippmann P, Jones PG, Schrey H, Brönstrup M, Ott I. Silver Organometallics that are Highly Potent Thioredoxin and Glutathione Reductase Inhibitors: Exploring the Correlations of Solution Chemistry with the Strong Antibacterial Effects. ACS Infect Dis 2024; 10:1753-1766. [PMID: 38606463 PMCID: PMC11091889 DOI: 10.1021/acsinfecdis.4c00104] [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: 02/06/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/13/2024]
Abstract
The antibacterial activity of silver species is well-established; however, their mechanism of action has not been adequately explored. Furthermore, issues of low-molecular silver compounds with cytotoxicity, stability, and solubility hamper their progress to drug leads. We have investigated silver N-heterocyclic carbene (NHC) halido complexes [(NHC)AgX, X = Cl, Br, and I] as a promising new type of antibacterial silver organometallics. Spectroscopic studies and conductometry established a higher stability for the complexes with iodide ligands, and nephelometry indicated that the complexes could be administered in solutions with physiological chloride levels. The complexes showed a broad spectrum of strong activity against pathogenic Gram-negative bacteria. However, there was no significant activity against Gram-positive strains. Further studies clarified that tryptone and yeast extract, as components of the culture media, were responsible for this lack of activity. The reduction of biofilm formation and a strong inhibition of both glutathione and thioredoxin reductases with IC50 values in the nanomolar range were confirmed for selected compounds. In addition to their improved physicochemical properties, the compounds with iodide ligands did not display cytotoxic effects, unlike the other silver complexes. In summary, silver NHC complexes with iodide secondary ligands represent a useful scaffold for nontoxic silver organometallics with improved physicochemical properties and a distinct mechanism of action that is based on inhibition of thioredoxin and glutathione reductases.
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Affiliation(s)
- Igor V. Esarev
- Institute
of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstraße 55, 38106 Braunschweig, Germany
| | - Bianka Karge
- Department
of Chemical Biology, Helmholtz Centre for
Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Haoxuan Zeng
- Department
of Microbial Drugs, Helmholtz Centre for
Infection Research GmbH and German Centre for Infection Research (DZIF), Partner Site Hannover/Braunschweig,
Inhoffenstraße 7, 38124 Braunschweig, Germany
- Institute
of Microbiology, Technische Universität
Braunschweig, Spielmannstraße 7, 38106 Braunschweig, Germany
| | - Petra Lippmann
- Institute
of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstraße 55, 38106 Braunschweig, Germany
| | - Peter G. Jones
- Institute
of Inorganic and Analytical Chemistry, Technische
Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Hedda Schrey
- Department
of Microbial Drugs, Helmholtz Centre for
Infection Research GmbH and German Centre for Infection Research (DZIF), Partner Site Hannover/Braunschweig,
Inhoffenstraße 7, 38124 Braunschweig, Germany
- Institute
of Microbiology, Technische Universität
Braunschweig, Spielmannstraße 7, 38106 Braunschweig, Germany
| | - Mark Brönstrup
- Department
of Chemical Biology, Helmholtz Centre for
Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Ingo Ott
- Institute
of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstraße 55, 38106 Braunschweig, Germany
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11
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Nayak R, Rai VK, Pradhan D, Halder J, Rajwar TK, Dash P, Das C, Mishra A, Mahanty R, Saha I, Manoharadas S, Kar B, Ghosh G, Rath G. Exploring the Biofilm Inhibition Potential of a Novel Phytic Acid-Crosslinked Chitosan Nanoparticle: In Vitro and In Vivo Investigations. AAPS PharmSciTech 2024; 25:106. [PMID: 38724834 DOI: 10.1208/s12249-024-02829-3] [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: 02/28/2024] [Accepted: 05/01/2024] [Indexed: 07/19/2024] Open
Abstract
The primary factor underlying the virulence of Candida albicans is its capacity to form biofilms, which in turn leads to recurrent complications. Over-the-counter antifungal treatments have proven ineffective in eliminating fungal biofilms and the inflammatory cytokines produced during fungal infections. Chitosan nanoparticles offer broad and versatile therapeutic potential as both antifungal agents and carriers for antifungal drugs to combat biofilm-associated Candida infections. In our study, we endeavoured to develop chitosan nanoparticles utilising chitosan and the antifungal crosslinker phytic acid targeting C. albicans. Phytic acid, known for its potent antifungal and anti-inflammatory properties, efficiently crosslinks with chitosan. The nanoparticles were synthesised using the ionic gelation technique and subjected to analyses including Fourier transform infrared spectroscopy, dynamic light scattering, and zeta potential analysis. The synthesised nanoparticles exhibited dimensions with a diameter (Dh) of 103 ± 3.9 nm, polydispersity index (PDI) of 0.33, and zeta potential (ZP) of 37 ± 2.5 mV. These nanoparticles demonstrated an antifungal effect with a minimum inhibitory concentration (MIC) of 140 ± 2.2 µg/mL, maintaining cell viability at approximately 90% of the MIC value and reducing cytokine levels. Additionally, the nanoparticles reduced ergosterol content and exhibited a 62% ± 1.2 reduction in biofilm susceptibility, as supported by colony-forming unit (CFU) and XTT assays-furthermore, treatment with nanoparticles reduced exopolysaccharide production and decreased secretion of aspartyl protease by C. albicans. Our findings suggest that the synthesised nanoparticles effectively combat Candida albicans infections. In vivo studies conducted on a mouse model of vaginal candidiasis confirmed the efficacy of the nanoparticles in combating fungal infections in vivo.
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Affiliation(s)
- Reena Nayak
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751003, India
| | - Vineet Kumar Rai
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751003, India
| | - Deepak Pradhan
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751003, India
| | - Jitu Halder
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751003, India
| | - Tushar Kanti Rajwar
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751003, India
| | - Priyanka Dash
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751003, India
| | - Chandan Das
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751003, India
| | - Ajit Mishra
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751003, India
| | - Ritu Mahanty
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751003, India
| | - Ivy Saha
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751003, India
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box. 2454, 11451, Riyadh, Saudi Arabia
| | - Biswakanth Kar
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751003, India
| | - Goutam Ghosh
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751003, India
| | - Goutam Rath
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751003, India.
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12
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Gajdosechova Z, Loeschner K. Nanoparticles as a younger member of the trace element species family - a food perspective. Anal Bioanal Chem 2024; 416:2585-2594. [PMID: 37709980 PMCID: PMC11009757 DOI: 10.1007/s00216-023-04940-z] [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: 08/03/2023] [Revised: 08/31/2023] [Accepted: 09/04/2023] [Indexed: 09/16/2023]
Abstract
Speciation analysis plays a key role in understanding the biological activity and toxicity of an element. So far, classical speciation analysis focused only on the dissolved fraction of an elemental species, whereas nanoparticle forms of analytes are being widely found in consumer and industrial products. A significant contributor to human exposure to nanoparticles is through food into which nanoparticles can be incorporated from endogenous sources or they may be formed naturally in the living organisms. Nanoparticles often undergo changes in the food matrices and upon consumption, in the gastrointestinal tract, which present a significant challenge to their characterisation. Therefore, a combination of both classical and nanoparticle speciation analytical techniques is needed for the characterisation of both dissolved and particulate forms of the chemical species. This article presents and discusses the current trends in analysis of nanoparticle behaviour in the gastrointestinal tract and formation and characterisation of biogenic nanoparticles.
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Affiliation(s)
- Zuzana Gajdosechova
- National Research Council Canada, Metrology, 1200 Montreal Road, Ottawa, ON, K1A 0R6, Canada
| | - Katrin Loeschner
- Technical University of Denmark, National Food Institute, Kemitorvet 201, 2800, Kgs. Lyngby, Denmark.
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13
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Ozelin SD, Esperandim TR, Dias FGG, Pereira LDF, Garcia CB, de Souza TO, Magalhães LF, Barud HDS, Sábio RM, Tavares DC. Nanocomposite Based on Bacterial Cellulose and Silver Nanoparticles Improve Wound Healing Without Exhibiting Toxic Effect. J Pharm Sci 2024:S0022-3549(24)00139-4. [PMID: 38615814 DOI: 10.1016/j.xphs.2024.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 04/09/2024] [Accepted: 04/09/2024] [Indexed: 04/16/2024]
Abstract
Wound healing is an important and complex process, containing a multifaceted process governed by sequential yet overlapping phases. Certain treatments can optimize local physiological conditions and improve wound healing. Silver nanoparticles (AgNP) are widely known for their antimicrobial activity. On the other hand, bacterial cellulose (BC) films have been used as a dressing that temporarily substitutes the skin, offering many advantages in optimizing wound healing, in addition to being highly biocompatible. Considering the promising activities of AgNP and BC films, the present study aimed to evaluate the wound healing activity in Wistar Hannover rats using a nanocomposite based on bacterial cellulose containing AgNP (AgBC). In a period of 21 days, its influence on the wound area, microbial growth, histopathological parameters, and collagen content were analyzed. In addition, toxicity indicators were assessed, such as weight gain, water consumption, and creatinine and alanine transaminase levels. After 14 days of injury, the animals treated with AgBC showed a significant increase in wound contraction. The treatment with AgBC significantly reduced the number of microbial colonies compared to other treatments in the first 48 h after the injury. At the end of the 21 experimental days, an average wound contraction rate greater than 97 % in relation to the initial area was observed, in addition to a significant increase in the amount of collagen fibers at the edge of the wounds, lower scores of necrosis, angiogenesis and inflammation, associated with no systemic toxicity. Therefore, it is concluded that the combination of preexisting products to form a new nanocomposite based on BC and AgNP amplified the biological activity of these products, increasing the effectiveness of wound healing and minimizing possible toxic effects of silver.
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Affiliation(s)
- Saulo Duarte Ozelin
- University of Franca, Avenida Dr. Armando Salles de Oliveira, 201, 14404-600, Franca, São Paulo, Brazil
| | | | | | - Lucas de Freitas Pereira
- University of Franca, Avenida Dr. Armando Salles de Oliveira, 201, 14404-600, Franca, São Paulo, Brazil
| | - Cristiane Buzatto Garcia
- University of Franca, Avenida Dr. Armando Salles de Oliveira, 201, 14404-600, Franca, São Paulo, Brazil
| | - Thiago Olímpio de Souza
- University of Franca, Avenida Dr. Armando Salles de Oliveira, 201, 14404-600, Franca, São Paulo, Brazil
| | | | - Hernane da Silva Barud
- University of Araraquara, Biopolymers and Biomaterials Laboratory, Rua Carlos Gomes, 1338, 14801-320, Araraquara, São Paulo, Brazil; BioSmart Nano, Av. Jorge Fernandes de Mattos, 311, 14808-162 Araraquara, São Paulo, Brazil
| | - Rafael Miguel Sábio
- São Paulo State University, School of Pharmaceutical Sciences, Rodovia Araraquara Jaú, Km 01, 14800-903, Araraquara, São Paulo, Brazil
| | - Denise Crispim Tavares
- University of Franca, Avenida Dr. Armando Salles de Oliveira, 201, 14404-600, Franca, São Paulo, Brazil.
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14
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Jung YE, Yang JH, Yim MS. Investigation of bismuth-based metal-organic frameworks for effective capture and immobilization of radioiodine gas. JOURNAL OF HAZARDOUS MATERIALS 2024; 467:133777. [PMID: 38359759 DOI: 10.1016/j.jhazmat.2024.133777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/09/2024] [Accepted: 02/10/2024] [Indexed: 02/17/2024]
Abstract
In this study, we investigated the use of Bi-mna, a specific type of bismuth metal organic framework (MOF) for the capture and disposal of iodine, a key nuclide of concern in nuclear fuel reprocessing plants and nuclear power plants. To find the suitable form of Bi-mna for the purpose, experiments were performed by synthesizing four different Bi-mna with varying reagent ratios and connecting iodine adsorption and conversion for immobilization. After iodine adsorption and characterization to investigate their adsorption mechanisms, the Bi-mna samples went through conversion for immobilization to fix captured iodine into the adsorbents. The converted materials are characterized to examine their thermal stability. The Bi-2mna, showing the best performance of adsorption and thermal stability after the conversion, was selected to explore its chemical stability. According to the test results, the converted compound showed relatively low leaching rate (3.06 ×10-5 g/m2∙day) compared with other iodine containing waste forms for disposal. Based on the results, we proposed the Bi-2mna as a candidate material as iodine adsorbent as well as waste form precursor. ENVIRONMENTAL IMPLICATION: Radioiodine a key nuclide of concern in nuclear fuel reprocessing plants and nuclear power plants. Once ingested, it is accumulated in thyroid grand, causing negative health effects. Currently, a typical radioiodine adsorbent is silver-based zeolites. Despite a strong affinity to iodine of silver, it has a chemical toxicity that causes a potential issue in disposal. Therefore, it is substantially required to develop new type of adsorbents which are both good for capture and disposal of radioiodine. In this respect, we suggested a bismuth-based metal-organic framework as an alternative adsorbent to manage the life cycle of radioiodine.
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Affiliation(s)
- Young Eun Jung
- Advanced Fuel Cycle Technology Division, Korea Atomic Energy Research Institute, 111 Daedeok-daero, 989 beon-gil, Yuseong-gu, Daejeon 34057, South Korea
| | - Jae Hwan Yang
- Department of Environmental & IT Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, South Korea.
| | - Man-Sung Yim
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, South Korea.
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15
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Xu GY, Zhao IS, Lung CYK, Yin IX, Lo ECM, Chu CH. Silver Compounds for Caries Management. Int Dent J 2024; 74:179-186. [PMID: 38008704 PMCID: PMC10988255 DOI: 10.1016/j.identj.2023.10.013] [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: 06/21/2023] [Revised: 10/15/2023] [Accepted: 10/17/2023] [Indexed: 11/28/2023] Open
Abstract
Silver metal and compounds have antibacterial properties, although their action's mechanisms are not fully understood. Scientists generally consider that silver disrupts the bacterial cell wall. It causes a structural change in the bacterial cell membrane and cytoplasm. It also stops deoxyribonucleic acid replication, resulting in inactivating enzymatic activity and cell death. The antimicrobial effect of silver-containing compounds relies on the release of bioactive silver ions. Hence, silver metal and compounds have been used in medicine to prevent infection for hundreds of years. Silver metal and compounds are also used as antibacterial agents in dentistry. Studies have shown that silver compounds are effective in the management of dental caries. Fluoride-containing silver compounds have been found in experiments to be beneficial at remineralising dental cavities. Silver diamine fluoride (SDF) can assist in preventing and arresting tooth cavities. The World Health Organization included SDF in its Model List of Essential Medicine for both adults and children in 2021. Clinicians also use SDF to manage dentine hypersensitivity as well as to inhibit growth of periodontal pathogens. However, traditional silver compounds cause tooth discolouration because of the silver-staining effect. These side effects of their applications depend on the amount applied and the frequency of application. Researchers are developing nanosilver fluoride and silver nanoparticles to overcome the staining. This review gives an overview of the antibacterial mechanism of silver compounds, namely silver nitrate, silver fluoride, SDF, silver nanoparticles, and nano silver fluoride for caries management. The outlook for the future development of silver compounds will be discussed.
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Affiliation(s)
- Grace Y Xu
- School of Dentistry, Shenzhen University Health Science Center, Shenzhen, China; Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - Irene S Zhao
- School of Dentistry, Shenzhen University Health Science Center, Shenzhen, China; Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - Christie Y K Lung
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - Iris X Yin
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - Edward C M Lo
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - Chun Hung Chu
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
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16
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Barbosa JRM, Santos ASGG, Viana AT, Gonçalves AG, Nunes OC, Pereira MFR, Soares OSGP. Carbon-based materials for water disinfection and heavy metals removal. ENVIRONMENTAL TECHNOLOGY 2024; 45:1810-1828. [PMID: 36469607 DOI: 10.1080/09593330.2022.2154173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
The presence of heavy metals and/or harmful bacteria in drinking water represents significant risks to human health. This study aimed to develop a low-cost water treatment technology using synthesized nanocomposites with metal nanoparticles supported on activated carbon (AC) for bacteria and heavy metal removal. In addition, the performance of the developed nanomaterials was compared with that of commercial materials - carbon fibers of three different typologies. The chemical and textural properties of all tested materials were characterized. To simulate a technology to be applied in a water outlet point, removal tests were carried out in a continuous system using suspensions of Escherichia coli and/or Staphylococcus aureus, wherein the contact time with the two phases was minimal (1 min). The obtained results revealed that iron and copper oxides supported on AC with a calcination treatment (CuFeO/AC-C) was the nanocomposite with the best performance, achieving a 6 log reduction for both bacteria in the same suspension up to 9 h operation. A mix of bacteria and heavy metals, simulating a real water, was treated with CuFeO/AC-C obtaining a 6 log reduction of bacteria, a Pb2+ removal >99.9% and Cd2+ removal between 97 and 98% over 180 passage times.
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Affiliation(s)
- José R M Barbosa
- Departamento de Engenharia Química, Faculdade de Engenharia, Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Universidade do Porto, Porto, Portugal
- ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
| | - A Sofia G G Santos
- Departamento de Engenharia Química, Faculdade de Engenharia, Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Universidade do Porto, Porto, Portugal
- ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
| | - A T Viana
- ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
- Departamento de Engenharia Química, Faculdade de Engenharia, Laboratory for Process Engineering, Environment, Biotechnology and Energy (LEPABE), Universidade do Porto, Porto, Portugal
| | | | - Olga C Nunes
- ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
- Departamento de Engenharia Química, Faculdade de Engenharia, Laboratory for Process Engineering, Environment, Biotechnology and Energy (LEPABE), Universidade do Porto, Porto, Portugal
| | - M Fernando R Pereira
- Departamento de Engenharia Química, Faculdade de Engenharia, Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Universidade do Porto, Porto, Portugal
- ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
| | - O Salomé G P Soares
- Departamento de Engenharia Química, Faculdade de Engenharia, Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Universidade do Porto, Porto, Portugal
- ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
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17
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Sánchez-Gálvez J, Martínez-Isasi S, Gómez-Salgado J, Rumbo-Prieto JM, Sobrido-Prieto M, Sánchez-Hernández M, García-Martínez M, Fernández-García D. Cytotoxicity and concentration of silver ions released from dressings in the treatment of infected wounds: a systematic review. Front Public Health 2024; 12:1331753. [PMID: 38450128 PMCID: PMC10916701 DOI: 10.3389/fpubh.2024.1331753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/30/2024] [Indexed: 03/08/2024] Open
Abstract
Introduction Silver-releasing dressings are used in the treatment of infected wounds. Despite their widespread use, neither the amount of silver released nor the potential in vivo toxicity is known. The aim of this study was to evaluate the cytotoxic effects and the amount of silver released from commercially available dressings with infected wounds. Methods The review was conducted according to the PRISMA statement. The Web of Science, PubMed, Embase, Scopus, and CINAHL databases were searched for studies from 2002 through December 2022. The criteria were as follows: population (human patients with infected wounds); intervention (commercial dressings with clinical silver authorized for use in humans); and outcomes (concentrations of silver ions released into tissues and plasma). Any study based on silver-free dressings, experimental dressings, or dressings not for clinical use in humans should be excluded. According to the type of study, systematic reviews, experimental, quasi-experimental, and observational studies in English, Spanish, or Portuguese were considered. The quality of the selected studies was assessed using the JBI critical appraisal tools. Studies that assessed at least 65% of the included items were included. Data were extracted independently by two reviewers. Results 740 articles were found and five were finally selected (all of them quasi-experimental). Heterogeneity was found in terms of study design, application of silver dressings, and methods of assessment, which limited the comparability between studies. Conclusion In vivo comparative studies of clinical dressings for control of infection lack a standardized methodology that allows observation of all the variables of silver performance at local and systemic levels, as well as evaluation of its cytotoxicity. It cannot be concluded whether the assessed concentrations of released silver in commercial dressings for the topical treatment of infected wounds are cytotoxic to skin cells. Systematic review registration https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42022351041, PROSPERO [CRD42022351041].
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Affiliation(s)
- Javier Sánchez-Gálvez
- Doctoral Programme in Health, Disability, Dependence, and Welfare, University of León, León, Spain
- Faculty of Nursing, Catholic University of Murcia (UCAM), Cartagena, Murcia, Spain
| | - Santiago Martínez-Isasi
- Simulation, Life Support, and Intensive Care Research Unit (SICRUS), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Galicia, Spain
- Primary Care Interventions to Prevent Maternal and Child Chronic Diseases of Perinatal and Developmental Origin (RICORS) (RD21/0012/0025), Carlos III Health Institute, Madrid, Spain
- CLINURSID Research Group, Department of Psychiatry, Radiology, Public Health, Nursing, and Medicine, University of Santiago de Compostela, Santiago de Compostela, Galicia, Spain
| | - Juan Gómez-Salgado
- Department of Sociology, Social Work, and Public Health, Faculty of Labour Sciences, University of Huelva, Huelva, Spain
- Escuela de Posgrado, Universidad de Especialidades Espíritu Santo, Guayaquil, Guayas, Ecuador
| | - José María Rumbo-Prieto
- Department of Health Sciences, Faculty of Nursing and Podiatry of Ferrol, University of A Coruña, A Coruña, Spain
- Knowledge Support Unit (USCO), Ferrol University Hospital Complex, Health District of Ferrol, Galician Health Service, Ferrol, Spain
| | - María Sobrido-Prieto
- Department of Health Sciences, Faculty of Nursing and Podiatry of Ferrol, University of A Coruña, A Coruña, Spain
| | | | - María García-Martínez
- Simulation, Life Support, and Intensive Care Research Unit (SICRUS), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Galicia, Spain
- Primary Care Interventions to Prevent Maternal and Child Chronic Diseases of Perinatal and Developmental Origin (RICORS) (RD21/0012/0025), Carlos III Health Institute, Madrid, Spain
| | - Daniel Fernández-García
- Health Research Nursing Group (GREIS), Department of Nursing and Physiotherapy, University of León, León, Spain
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18
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Wang C, Li S, Sun P, Yu Z, Yang X. Vortex-assisted hydrophobic natural deep eutectic solvent liquid-liquid microextraction for the removal of silver ions from environmental water. Anal Bioanal Chem 2024; 416:873-882. [PMID: 38062196 DOI: 10.1007/s00216-023-05073-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/22/2023] [Accepted: 11/27/2023] [Indexed: 01/23/2024]
Abstract
This study presents a novel approach for the quantification of silver ions in environmental water through the utilization of liquid-liquid microextraction, employing natural deep eutectic solvents in conjunction with inductively coupled plasma emission spectroscopy. The extracted solvent was characterized by Fourier transform infrared spectroscopy (FT-IR). The impact of various extractant types, extractant molar ratio, extractant volume, extraction time, and salt concentration on the efficacy of silver ion extraction was investigated. The findings indicate that the optimal extraction efficiency was attained by utilizing a 5-mL aqueous solution volume, containing 1000 μL thymol/lactic acid NADES 1:3, a salt concentration of 1 mg mL-1, a pH value of 4, and a vortex time of 4 min. Upon implementing the optimized experimental conditions, the recovery of target metal ions was from 96.9 to 101.0%. The relative standard deviations were observed to be within the range of 1.5 to 2.7%. The present study demonstrates the reproducibility, accuracy, and reliability of the method for detecting silver ions in environmental water, with linear range of 5~1000 ng mL-1 and limits of detection (LOD) and limits of quantification (LOQ) of 1.52 ng mL-1 and 5.02 ng mL-1, respectively.
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Affiliation(s)
- Chao Wang
- College of Food Science, Heilongjiang Bayi Agricultural University, No. 5, Xinfeng Road, Daqing, 163319, China.
| | - Shuo Li
- College of Food Science, Heilongjiang Bayi Agricultural University, No. 5, Xinfeng Road, Daqing, 163319, China
- Agricultural Products and Processed Products Supervision and Testing Center, Ministry of Agriculture, National Coarse Cereals Engineering Research Center, Daqing, 163319, China
- National Coarse Cereals Engineering Research Center, Daqing, 163319, China
| | - Peng Sun
- College of Food Science, Heilongjiang Bayi Agricultural University, No. 5, Xinfeng Road, Daqing, 163319, China.
- Agricultural Products and Processed Products Supervision and Testing Center, Ministry of Agriculture, National Coarse Cereals Engineering Research Center, Daqing, 163319, China.
- National Coarse Cereals Engineering Research Center, Daqing, 163319, China.
| | - Zhao Yu
- College of Food Science, Heilongjiang Bayi Agricultural University, No. 5, Xinfeng Road, Daqing, 163319, China
| | - Xue Yang
- College of Food Science, Heilongjiang Bayi Agricultural University, No. 5, Xinfeng Road, Daqing, 163319, China
- Agricultural Products and Processed Products Supervision and Testing Center, Ministry of Agriculture, National Coarse Cereals Engineering Research Center, Daqing, 163319, China
- National Coarse Cereals Engineering Research Center, Daqing, 163319, China
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19
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Gorel O, Hamuda M, Feldman I, Kucyn‐Gabovich I. Enhanced healing of wounds that responded poorly to silver dressing by copper wound dressings: Prospective single arm treatment study. Health Sci Rep 2024; 7:e1816. [PMID: 38226359 PMCID: PMC10788384 DOI: 10.1002/hsr2.1816] [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: 06/27/2023] [Revised: 11/07/2023] [Accepted: 12/21/2023] [Indexed: 01/17/2024] Open
Abstract
Background and Aims Dressings containing silver ions are an accepted and common option for wound treatment. However, some wounds fail to heal at the desired rate despite optimal management. The aim of the study was to examine the effect of copper dressings in noninfected wounds. Methods The study included 20 patients aged 18-85 years with 2-30 cm2 noninfected wounds treated for 17-41 days with silver wound dressings that failed to reduce by >50% the wound size, who were then treated with copper dressings. Ten patients were diabetics, 10 suffered from hypertension, and six suffered from peripheral vascular disease (PVD). Two patients suffered from two wounds. Most were amputation wounds below the knee. Results Five patients dropped out from the study due to complications not related to the wound. The mean period of silver and copper dressings treatment was 25.6 and 29.6 days, respectively (p = 0.25; t test). None of the wounds became infected. Comparing a period of 25 days, during the copper dressings treatment, the mean wound area reduction was ~2.4 times higher than during the silver dressing treatment, 87.35 ± 22.4% versus 37.02 ± 25.11% (mean ± SD; p < 0.001; paired t test), respectively. The average decline during the silver and copper treatments were 1.2% and 2.14% per day (p = 0.002; multiple regression analysis), respectively. Conclusions The enhanced wound healing process observed with the copper dressings may be explained by the integral role of copper throughout all physiological skin repair processes. Silver in contrast has no physiological role in wound healing. The results of our study confirm case reports showing enhanced wound healing of hard-to-heal wounds with copper dressings, both of infected and noninfected wounds. Taken together, the results of the current study support the hypothesis that the application of copper dressings in situ for noninfected wounds results in the stimulation of the wound healing processes, as opposed to silver dressings.
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Affiliation(s)
- Oxana Gorel
- Loewenstein Rehabilitation CenterRa'ananaIsrael
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20
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Zhang M, Du H, Ma X, Zhao W. Effect evaluation of new dressing URGOTULRANGE in the treatment of pressure injury. Technol Health Care 2024; 32:143-150. [PMID: 37248926 DOI: 10.3233/thc-220604] [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] [Indexed: 05/31/2023]
Abstract
BACKGROUND Pressure injury (PI) is a local injury of the skin and/or soft tissue located at the bone caused by medical or other equipment and is common in long-term bedridden patients. OBJECTIVE To investigate the clinical effect of Urgotul foam dressing in the treatment of stage 3 ∼ 4 PI and deep tissue PI. METHODS A total of 38 patients with stage 3 ∼ 4 PI and deep tissue PI admitted to Jinan Central Hospital from January 2016 to December 2018 were selected and randomly divided into a control group (dressing change plus silver ion cream dressing) and an observation group (dressing change plus Urgotul Absorb non-border foam dressing), with 19 cases in each group. After 4 weeks of treatment, the pain intensity during dressing change and the treatment efficacy for PI wounds were compared between the two groups. RESULTS There were no differences in gender (P= 0.740), age (P= 0.130), single wound area (P= 0.673), consultation department (P= 0.972), stage (P= 0.740), presence of undermining (P= 0.721), deep tissue PI (P= 0.721), and systemic antibiotic therapy (P= 1.000) between the two groups, which were comparable. The treatment effect of the observation group was better than that of the control group (P= 0.003), and the pain score of the observation group was lower than that of the control group (P< 0.001). CONCLUSION Urgotul Absorb non-border foam dressing has a good effect in the treatment of stage 3 ∼ 4 PI and deep tissue PI and can relieve patients' pain, and is thus worth promoting.
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Affiliation(s)
- Mengmeng Zhang
- Department of Burns and Plastic Surgery, Central Hostpital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Hongxia Du
- Department of Nursing, Central Hostpital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xiaoxia Ma
- Department of Digestive Endoscopy, Central Hostpital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Wenxing Zhao
- Department of Burns and Plastic Surgery, Central Hostpital Affiliated to Shandong First Medical University, Jinan, Shandong, China
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21
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Yang L, Lai Y, Cheung CI, Ye Z, Huang T, Wang Y, Chin Y, Chia Z, Chen Y, Li M, Tseng H, Tsai Y, Zhang Z, Chen K, Tsai B, Shieh D, Lee N, Tsai P, Huang C. Novel metal peroxide nanoboxes restrain Clostridioides difficile infection beyond the bactericidal and sporicidal activity. Bioeng Transl Med 2023; 8:e10593. [PMID: 38023694 PMCID: PMC10658501 DOI: 10.1002/btm2.10593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 07/26/2023] [Accepted: 07/30/2023] [Indexed: 12/01/2023] Open
Abstract
Clostridioides difficile spores are considered as the major source responsible for the development of C. difficile infection (CDI), which is associated with an increased risk of death in patients and has become an important issue in infection control of nosocomial infections. Current treatment against CDI still relies on antibiotics, which also damage normal flora and increase the risk of CDI recurrence. Therefore, alternative therapies that are more effective against C. difficile bacteria and spores are urgently needed. Here, we designed an oxidation process using H2O2 containing PBS solution to generate Cl- and peroxide molecules that further process Ag and Au ions to form nanoboxes with Ag-Au peroxide coat covering Au shell and AgCl core (AgAu-based nanoboxes). The AgAu-based nanoboxes efficiently disrupted the membrane structure of bacteria/spores of C. difficile after 30-45 min exposure to the highly reactive Ag/Au peroxide surface of the nano structures. The Au-enclosed AgCl provided sustained suppression of the growth of 2 × 107 pathogenic Escherichia coli for up to 19 days. In a fecal bench ex vivo test and in vivo CDI murine model, biocompatibility and therapeutic efficacy of the AuAg nanoboxes to attenuate CDI was demonstrated by restoring the gut microbiota and colon mucosal structure. The treatment successfully rescued the CDI mice from death and prevented their recurrence mediated by vancomycin treatment. The significant outcomes indicated that the new peroxide-derived AgAu-based nanoboxes possess great potential for future translation into clinical application as a new alternative therapeutic strategy against CDI.
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Affiliation(s)
- Li‐Xing Yang
- Department of PhotonicsNational Cheng Kung UniversityTainanTaiwan
- School of Dentistry and Institute of Oral MedicineNational Cheng Kung UniversityTainanTaiwan
| | - Yi‐Hsin Lai
- Institute of Basic MedicineNational Cheng Kung UniversityTainanTaiwan
| | - Chun In Cheung
- Department of PhotonicsNational Cheng Kung UniversityTainanTaiwan
| | - Zhi Ye
- Department of Medical Laboratory Science and BiotechnologyNational Cheng Kung UniversityTainanTaiwan
| | - Tzu‐Chi Huang
- Department of PhotonicsNational Cheng Kung UniversityTainanTaiwan
| | - Yu‐Chin Wang
- Department of Medical Laboratory Science and BiotechnologyNational Cheng Kung UniversityTainanTaiwan
| | - Yu‐Cheng Chin
- Department of PhotonicsNational Cheng Kung UniversityTainanTaiwan
| | - Zi‐Chun Chia
- Department of PhotonicsNational Cheng Kung UniversityTainanTaiwan
| | - Ya‐Jyun Chen
- Department of PhotonicsNational Cheng Kung UniversityTainanTaiwan
| | - Meng‐Jia Li
- Institute of Basic MedicineNational Cheng Kung UniversityTainanTaiwan
| | - Hsiu‐Ying Tseng
- Department of Medical Laboratory Science and BiotechnologyNational Cheng Kung UniversityTainanTaiwan
| | - Yi‐Tseng Tsai
- Department of PhotonicsNational Cheng Kung UniversityTainanTaiwan
| | - Zhi‐Bin Zhang
- Department of PhotonicsNational Cheng Kung UniversityTainanTaiwan
| | - Kuan‐Hsu Chen
- Department of PhotonicsNational Cheng Kung UniversityTainanTaiwan
| | - Bo‐Yang Tsai
- Institute of Basic MedicineNational Cheng Kung UniversityTainanTaiwan
| | - Dar‐Bin Shieh
- School of Dentistry and Institute of Oral MedicineNational Cheng Kung UniversityTainanTaiwan
- Institute of Basic MedicineNational Cheng Kung UniversityTainanTaiwan
- Center of Applied Nanomedicine and Core Facility CenterNational Cheng Kung UniversityTainanTaiwan
- iMANI Center of the National Core Facility for BiopharmaceuticalsNational Science and Technology CouncilTaipeiTaiwan
- Department of StomatologyNational Cheng Kung University HospitalTainanTaiwan
| | - Nan‐Yao Lee
- Department of MedicineNational Cheng Kung UniversityTainanTaiwan
- Division of Infectious Diseases, Department of Internal Medicine and Center for Infection ControlNational Cheng Kung University HospitalTainanTaiwan
| | - Pei‐Jane Tsai
- Institute of Basic MedicineNational Cheng Kung UniversityTainanTaiwan
- Department of Medical Laboratory Science and BiotechnologyNational Cheng Kung UniversityTainanTaiwan
- Research Center of Infectious Disease and SignalingNational Cheng Kung UniversityTainanTaiwan
- Department of Pathology, National Cheng Kung University Hospital, College of MedicineNational Cheng Kung UniversityTainanTaiwan
| | - Chih‐Chia Huang
- Department of PhotonicsNational Cheng Kung UniversityTainanTaiwan
- Center of Applied Nanomedicine and Core Facility CenterNational Cheng Kung UniversityTainanTaiwan
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22
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Ahmad MY, Liu S, Tegafaw T, Saidi AKAA, Zhao D, Liu Y, Nam SW, Chang Y, Lee GH. Heavy Metal-Based Nanoparticles as High-Performance X-ray Computed Tomography Contrast Agents. Pharmaceuticals (Basel) 2023; 16:1463. [PMID: 37895934 PMCID: PMC10609879 DOI: 10.3390/ph16101463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/01/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
X-ray computed tomography (CT) contrast agents offer extremely valuable tools and techniques in diagnostics via contrast enhancements. Heavy metal-based nanoparticles (NPs) can provide high contrast in CT images due to the high density of heavy metal atoms with high X-ray attenuation coefficients that exceed that of iodine (I), which is currently used in hydrophilic organic CT contrast agents. Nontoxicity and colloidal stability are vital characteristics in designing heavy metal-based NPs as CT contrast agents. In addition, a small particle size is desirable for in vivo renal excretion. In vitro phantom imaging studies have been performed to obtain X-ray attenuation efficiency, which is a critical parameter for CT contrast agents, and the imaging performance of CT contrast agents has been demonstrated via in vivo experiments. In this review, we focus on the in vitro and in vivo studies of various heavy metal-based NPs in pure metallic or chemical forms, including Au, Pt, Pd, Ag, Ce, Gd, Dy, Ho, Yb, Ta, W, and Bi, and provide an outlook on their use as high-performance CT contrast agents.
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Affiliation(s)
- Mohammad Yaseen Ahmad
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (M.Y.A.); (S.L.); (T.T.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Shuwen Liu
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (M.Y.A.); (S.L.); (T.T.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Tirusew Tegafaw
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (M.Y.A.); (S.L.); (T.T.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Abdullah Khamis Ali Al Saidi
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (M.Y.A.); (S.L.); (T.T.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Dejun Zhao
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (M.Y.A.); (S.L.); (T.T.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Ying Liu
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (M.Y.A.); (S.L.); (T.T.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Sung-Wook Nam
- Department of Molecular Medicine, School of Medicine, Kyungpook National University, Taegu 41944, Republic of Korea;
| | - Yongmin Chang
- Department of Molecular Medicine, School of Medicine, Kyungpook National University, Taegu 41944, Republic of Korea;
| | - Gang Ho Lee
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (M.Y.A.); (S.L.); (T.T.); (A.K.A.A.S.); (D.Z.); (Y.L.)
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23
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Wang L, Hu M, Liu R, Xi S, Cheng M, Bao Y, Wang N, Dong Y. Development and analysis of a universal label-free micro/nano component for three-channel detection of silver ions, mercury ions, and tetracycline. Anal Chim Acta 2023; 1276:341606. [PMID: 37573104 DOI: 10.1016/j.aca.2023.341606] [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: 04/12/2023] [Revised: 06/26/2023] [Accepted: 07/07/2023] [Indexed: 08/14/2023]
Abstract
In this paper, an enzyme-free and label-free fluorescent nanomodule is proposed for rapid, simple and sensitive detection of Ag+, Hg2+ and tetracycline (TC). The strategy is cleverly designed to enable multiple-purpose detection with as little as 31 nt of ssDNA. Both the embedded dye SYBR Green I and the nanomaterial graphene oxide (GO) are able to distinguish single-stranded DNA from double-stranded DNA; thus, the combination of the two instead of using traditional molecular beacon (MB)-labeled fluorophores and quencher groups can effectively reduce the cost of experiments while efficiently reducing the background noise. Performance testing experiments confirmed the stability and selectivity of the platform; the limits of detection (LODs) of Ag+ and Hg2+ were 1.41 nM and 1.79 nM, respectively, and the detection range were within the WHO standards. In addition, only some base sequences in the flexible functional domain of the nanoloop needed to be programmed to build a universal platform, which was feasible using TC as a target. Therefore, the designed nanomodule has the potential to detect various types of targets, such as antibiotics, proteins, and target genes, and has broad application prospects in environmental monitoring, food testing, and disease diagnosis.
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Affiliation(s)
- Luhui Wang
- College of Life Science, Shaanxi Normal University, Xi'an, Shaanxi, 710119, PR China
| | - Mengyang Hu
- College of Life Science, Shaanxi Normal University, Xi'an, Shaanxi, 710119, PR China
| | - Rong Liu
- College of Computer Sciences, Shaanxi Normal University, Xi'an, Shaanxi, 710119, PR China
| | - Sunfan Xi
- College of Life Science, Shaanxi Normal University, Xi'an, Shaanxi, 710119, PR China
| | - Meng Cheng
- College of Life Science, Shaanxi Normal University, Xi'an, Shaanxi, 710119, PR China
| | - Yangyinchun Bao
- College of Life Science, Shaanxi Normal University, Xi'an, Shaanxi, 710119, PR China
| | - Na Wang
- College of Life Science, Shaanxi Normal University, Xi'an, Shaanxi, 710119, PR China
| | - Yafei Dong
- College of Life Science, Shaanxi Normal University, Xi'an, Shaanxi, 710119, PR China; College of Computer Sciences, Shaanxi Normal University, Xi'an, Shaanxi, 710119, PR China.
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24
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Pham T, Nguyen TT, Nguyen NH, Hayles A, Li W, Pham DQ, Nguyen CK, Nguyen T, Vongsvivut J, Ninan N, Sabri Y, Zhang W, Vasilev K, Truong VK. Transforming Spirulina maxima Biomass into Ultrathin Bioactive Coatings Using an Atmospheric Plasma Jet: A New Approach to Healing of Infected Wounds. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2305469. [PMID: 37715087 DOI: 10.1002/smll.202305469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/21/2023] [Indexed: 09/17/2023]
Abstract
The challenge of wound healing, particularly in patients with comorbidities such as diabetes, is intensified by wound infection and the accelerating problem of bacterial resistance to current remedies such as antibiotics and silver. One promising approach harnesses the bioactive and antibacterial compound C-phycocyanin from the microalga Spirulina maxima. However, the current processes of extracting this compound and developing coatings are unsustainable and difficult to achieve. To circumvent these obstacles, a novel, sustainable argon atmospheric plasma jet (Ar-APJ) technology that transforms S. maxima biomass into bioactive coatings is presented. This Ar-APJ can selectively disrupt the cell walls of S. maxima, converting them into bioactive ultrathin coatings, which are found to be durable under aqueous conditions. The findings demonstrate that Ar-APJ-transformed bioactive coatings show better antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa. Moreover, these coatings exhibit compatibility with macrophages, induce an anti-inflammatory response by reducing interleukin 6 production, and promote cell migration in keratinocytes. This study offers an innovative, single-step, sustainable technology for transforming microalgae into bioactive coatings. The approach reported here has immense potential for the generation of bioactive coatings for combating wound infections and may offer a significant advance in wound care research and application.
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Affiliation(s)
- Tuyet Pham
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
| | - Tien Thanh Nguyen
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
- College of Medicine and Pharmacy, Tra Vinh University, Tra Vinh, 87000, Vietnam
| | - Ngoc Huu Nguyen
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
- School of Biomedical Engineering, University of Sydney, Darlington, NSW, 2006, Australia
| | - Andrew Hayles
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
| | - Wenshao Li
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
| | - Duy Quang Pham
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
- School of Engineering, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | - Chung Kim Nguyen
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
| | - Trung Nguyen
- College of Science and Engineering, Flinders University, Adelaide, SA, 5042, Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy Beamline, ANSTO Australian Synchrotron, Clayton, Victoria, 3168, Australia
| | - Neethu Ninan
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
| | - Ylias Sabri
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, GPO Box 2476, Melbourne, VIC, 3001, Australia
| | - Wei Zhang
- Advanced Marine Biomanufacturing Laboratory, Centre for Marine Bioproduct Development, College of Medicine and Public Health, Flinders University, Adelaide, 5042, Australia
| | - Krasimir Vasilev
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
| | - Vi Khanh Truong
- Biomedical Nanoengineering Laboratory, College of Medicine and Public Health, Flinders University, Adelaide, SA, 5042, Australia
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25
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Mertens J, Alami A, Arijs K. Comparative in vivo toxicokinetics of silver powder, nanosilver and soluble silver compounds after oral administration to rats. Arch Toxicol 2023; 97:1859-1872. [PMID: 37195448 PMCID: PMC10256634 DOI: 10.1007/s00204-023-03511-6] [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: 03/03/2023] [Accepted: 04/26/2023] [Indexed: 05/18/2023]
Abstract
Silver (Ag; massive, powder and nanoform) and Ag compounds are used in industrial, medical and consumer applications, with potential for human exposure. Uncertainties exist about their comparative mammalian toxicokinetic ('TK') profiles, including their relative oral route bioavailability, especially for Ag massive and powder forms. This knowledge gap impedes concluding on the grouping of Ag and Ag compounds for hazard assessment purposes. Therefore, an in vivo TK study was performed in a rat model. Sprague-Dawley rats were exposed via oral gavage for up to 28 days to silver acetate (AgAc; 5, 55, 175 mg/kg(bw)/d), silver nitrate (AgNO3; 5, 55, 125 mg/kg(bw)/d), nanosilver (AgNP; 15 nm diameter; 3.6, 36, 360 mg/kg(bw)/d) or silver powder (AgMP; 0.35 µm diameter; 36, 180, 1000 mg/kg(bw)/d). Total Ag concentrations were determined in blood and tissues to provide data on comparative systemic exposure to Ag and differentials in achieved tissue Ag levels. AgAc and AgNO3 were the most bioavailable forms with comparable and linear TK profiles (achieved systemic exposures and tissue concentrations). AgMP administration led to systemic exposures of about an order of magnitude less, with tissue Ag concentrations 2-3 orders of magnitude lower and demonstrating non-linear kinetics. The apparent oral bioavailability of AgNP was intermediate between AgAc/AgNO3 and AgMP. For all test items, highest tissue Ag concentrations were in the gastrointestinal tract and reticuloendothelial organs, whereas brain and testis were minor sites of distribution. It was concluded that the oral bioavailability of AgMP was very limited. These findings provide hazard assessment context for various Ag test items and support the prediction that Ag in massive and powder forms exhibit low toxicity potential.
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Affiliation(s)
- Jelle Mertens
- European Precious Metals Federation, Avenue de Tervueren 168 Box 6, 1150, Brussels, Belgium.
| | - Anissa Alami
- European Precious Metals Federation, Avenue de Tervueren 168 Box 6, 1150, Brussels, Belgium
| | - Katrien Arijs
- European Precious Metals Federation, Avenue de Tervueren 168 Box 6, 1150, Brussels, Belgium
- ARCHE Consulting, Liefkensstraat 35D, 9032 Wondelgem, Ghent, Belgium
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26
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Wang XL, Yu N, Ma YX, Zhou HR, Wang C, Wei S, Miao AJ. Potential effects of Ag ion on the host by changing the structure of its gut microbiota. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131879. [PMID: 37336107 DOI: 10.1016/j.jhazmat.2023.131879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 06/05/2023] [Accepted: 06/15/2023] [Indexed: 06/21/2023]
Abstract
Silver (Ag) can change the structure of the gut microbiota (GM), but how such change may affect host health is unknown. In this study, mice were exposed to silver acetate daily for 120 days. During this period, Ag accumulation in the liver was measured, its effects on GM structure were analyzed, and potential metabolic changes in liver and serum were examined. Although Ag accumulation remained unchanged in most treatments, the ratio of Firmicutes to Bacteroidetes at the phylum level increased and changes in the relative abundance of 33 genera were detected, suggesting that Ag altered the energy metabolism of mice via changes in the gut GM. In serum and liver, 34 and 72 differentially expressed metabolites were identified, respectively. The KEGG pathways thus enriched mainly included those involving the metabolism of amino acids, organic acids, lipids, and purine. Strong correlations were found between 33 % of the microorganisms with altered relative abundances and 46 % of the differentially expressed metabolites. The resulting clusters yielded two communities responsible for host inflammation and energy metabolism. Overall, these results demonstrate potential effects of Ag on the host, by changing its GM structure, and the need to consider them when evaluating the health risk of Ag.
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Affiliation(s)
- Xin-Lei Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Mail box 24, Xianlin Road 163, Nanjing, Jiangsu Province 210023, China
| | - Nanyang Yu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Mail box 24, Xianlin Road 163, Nanjing, Jiangsu Province 210023, China
| | - Ying-Xue Ma
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Mail box 24, Xianlin Road 163, Nanjing, Jiangsu Province 210023, China
| | - Hao-Ran Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Mail box 24, Xianlin Road 163, Nanjing, Jiangsu Province 210023, China
| | - Chuan Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Mail box 24, Xianlin Road 163, Nanjing, Jiangsu Province 210023, China
| | - Si Wei
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Mail box 24, Xianlin Road 163, Nanjing, Jiangsu Province 210023, China.
| | - Ai-Jun Miao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Mail box 24, Xianlin Road 163, Nanjing, Jiangsu Province 210023, China.
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27
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Chen F, Han J, Guo Z, Mu C, Yu C, Ji Z, Sun L, Wang Y, Wang J. Antibacterial 3D-Printed Silver Nanoparticle/Poly Lactic-Co-Glycolic Acid (PLGA) Scaffolds for Bone Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16113895. [PMID: 37297029 DOI: 10.3390/ma16113895] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/21/2023] [Accepted: 05/16/2023] [Indexed: 06/12/2023]
Abstract
Infectious bone defects present a major challenge in the clinical setting currently. In order to address this issue, it is imperative to explore the development of bone tissue engineering scaffolds that are equipped with both antibacterial and bone regenerative capabilities. In this study, we fabricated antibacterial scaffolds using a silver nanoparticle/poly lactic-co-glycolic acid (AgNP/PLGA) material via a direct ink writing (DIW) 3D printing technique. The scaffolds' microstructure, mechanical properties, and biological attributes were rigorously assessed to determine their fitness for repairing bone defects. The surface pores of the AgNPs/PLGA scaffolds were uniform, and the AgNPs were evenly distributed within the scaffolds, as confirmed via scanning electron microscopy (SEM). Tensile testing confirmed that the addition of AgNPs enhanced the mechanical strength of the scaffolds. The release curves of the silver ions confirmed that the AgNPs/PLGA scaffolds released them continuously after an initial burst. The growth of hydroxyapatite (HAP) was characterized via SEM and X-ray diffraction (XRD). The results showed that HAP was deposited on the scaffolds, and also confirmed that the scaffolds had mixed with the AgNPs. All scaffolds containing AgNPs exhibited antibacterial properties against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). A cytotoxicity assay using mouse embryo osteoblast precursor cells (MC3T3-E1) showed that the scaffolds had excellent biocompatibility and could be used for repairing bone tissue. The study shows that the AgNPs/PLGA scaffolds have exceptional mechanical properties and biocompatibility, effectively inhibiting the growth of S. aureus and E. coli. These results demonstrate the potential application of 3D-printed AgNPs/PLGA scaffolds in bone tissue engineering.
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Affiliation(s)
- Fajun Chen
- Department of Anatomy, School of Basic Medicine, Anhui Medical University, No.81, Meishan Road, Shushan District, Hefei 230032, China
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Science Island, Hefei 230031, China
| | - Jian Han
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Science Island, Hefei 230031, China
- Graduate School of University of Science and Technology of China, Hefei 230026, China
| | - Zeyong Guo
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Science Island, Hefei 230031, China
- Graduate School of University of Science and Technology of China, Hefei 230026, China
| | - Chongjing Mu
- The Affiliated Suzhou Hospital of Nanjing Medical University, 16 Baita West Road, Suzhou 215000, China
| | - Chuandi Yu
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Science Island, Hefei 230031, China
- Graduate School of University of Science and Technology of China, Hefei 230026, China
| | - Zhibo Ji
- Department of Stomatology, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Lei Sun
- Department of Stomatology, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
- Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai 200011, China
| | - Yujuan Wang
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Science Island, Hefei 230031, China
| | - Junfeng Wang
- Department of Anatomy, School of Basic Medicine, Anhui Medical University, No.81, Meishan Road, Shushan District, Hefei 230032, China
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Science Island, Hefei 230031, China
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Lv S, Fan W, Fan B. Enhanced in vitro antibacterial effect against Enterococcus faecalis by using both low-dose cetylpyridinium chloride and silver ions. BMC Oral Health 2023; 23:299. [PMID: 37198581 DOI: 10.1186/s12903-023-02972-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 04/17/2023] [Indexed: 05/19/2023] Open
Abstract
BACKGROUND Enterococcus faecalis (E. faecalis) is frequently isolated from root canals with failed root canal treatments. Due to the strong ability of E. faecalis to resist many often-used antimicrobials, coping with E. faecalis infections remains a challenge. The aim of this study was to investigate the synergistic antibacterial effect of low-dose cetylpyridinium chloride (CPC) and silver ions (Ag+) against E. faecalis in vitro. METHODS The minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and the fractional inhibitory concentration index (FICI) were used to confirm the existence of the synergic antibacterial activity between low-dose CPC and Ag+. Colony-forming unit (CFU) counting, time-killing curve and dynamic growth curve were used to evaluate the antimicrobial effects of CPC and Ag+ combinations against planktonic E. faecalis. Four weeks biofilms were treated with drug-contained gels to determine the antimicrobial effect on biofilm-resident E.faecalis, and the integrity of E.faecalis and its biofilms were observed by FE-SEM. CCK-8 assays was used to test the cytotoxicity of CPC and Ag+ combinations on MC3T3-E1 cells. RESULTS The results confirmed the synergistic antibacterial effect of low-dose CPC and Ag+ against both planktonic and 4-week biofilm E. faecalis. After the addition of CPC, the sensitivity of both planktonic and biofilm-resident E. faecalis to Ag+ improved, and the combination showed good biocompatibility on MC3T3-E1 cells. CONCLUSIONS Low-dose CPC enhanced the antibacterial ability of Ag+ against both planktonic and biofilm E.faecalis with good biocompatibility. It may be developed into a novel and potent antibacterial agent against E.faecalis, with low toxicity for root canal disinfection or other related medical applications.
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Affiliation(s)
- Silei Lv
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST), Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, China
| | - Wei Fan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST), Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, China.
| | - Bing Fan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST), Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, China.
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Chawla V, Sharma S, Singh Y. Yttrium Oxide Nanoparticle-Loaded, Self-Assembled Peptide Gel with Antibacterial, Anti-Inflammatory, and Proangiogenic Properties for Wound Healing. ACS Biomater Sci Eng 2023; 9:2647-2662. [PMID: 37097124 DOI: 10.1021/acsbiomaterials.3c00134] [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] [Indexed: 04/26/2023]
Abstract
Chronic wounds are a major healthcare challenge owing to their complex healing mechanism and number of impediments to the healing process, like infections, unregulated inflammation, impaired cellular functions, poor angiogenesis, and enhanced protease activity. Current topical care strategies, such as surgical debridement, absorption of exudates, drug-loaded hydrogels for infection and inflammation management, and exogenous supply of growth factors for angiogenesis and cell proliferation, slow the progression of wounds and reduce patient suffering but suffer from low overall cure rates. Therefore, we have developed a proteolytically stable, multifunctional nanoparticle loaded-peptide gel with inherent anti-inflammatory, antibacterial, and pro-angiogenic properties to provide a favorable wound healing milieu by restoring impaired cellular functions. We have fabricated a self-assembled, lauric acid-peptide conjugate gel, LA-LLys-DPhe-LLys-NH2, loaded with yttrium oxide (Y2O3) nanoparticles (NLG). Gel formed a nanofibrous structure, and nanoparticles were passively entrapped within the network. The surface morphology, stability, viscoelastic, and self-healing characteristics of gels were characterized. It showed a high stability against degradation by proteolytic enzymes and highly potent antibacterial activities against E. coli and S. aureus due to the presence of positively charged side chains of lysine in the peptide chain. It also exhibited an excellent antioxidant activity as well as ability to stimulate cell proliferation in murine fibroblast (L929) cells and human umbilical vein endothelial cells (HUVECs). The incorporation of nanoparticles promoted angiogenesis by upregulating pro-angiogenic genes, vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF2), and epidermal growth factor (EGFR), and the gel caused complete wound closure in cells. In summary, the Y2O3 nanoparticle-loaded lauric acid-peptide conjugate gel is able to elicit the desired tissue regeneration responses and, therefore, has a strong potential as a matrix for the treatment of chronic wounds.
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Affiliation(s)
- Vatan Chawla
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Sakshi Sharma
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Yashveer Singh
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
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Elbagory AM, Hull R, Meyer M, Dlamini Z. Reports of Plant-Derived Nanoparticles for Prostate Cancer Therapy. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091870. [PMID: 37176928 PMCID: PMC10181082 DOI: 10.3390/plants12091870] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 04/18/2023] [Accepted: 04/28/2023] [Indexed: 05/15/2023]
Abstract
Plants have demonstrated potential in providing various types of phytomedicines with chemopreventive properties that can combat prostate cancer. However, despite their promising in vitro activity, the incorporation of these phytochemicals into the market as anticancer agents has been hindered by their poor bioavailability, mainly due to their inadequate aqueous solubility, chemical instability, and unsatisfactory circulation time. To overcome these drawbacks, it has been suggested that the incorporation of phytochemicals as nanoparticles can offer a solution. The use of plant-based chemicals can also improve the biocompatibility of the formulated nanoparticles by avoiding the use of certain hazardous chemicals in the synthesis, leading to decreased toxicity in vivo. Moreover, in some cases, phytochemicals can act as targeting agents to tumour sites. This review will focus on and summarize the following points: the different types of nanoparticles that contain individual phytochemicals or plant extracts in their design with the aim of improving the bioavailability of the phytochemicals; the therapeutic evaluation of these nanoparticles against prostate cancer both in vitro and in vivo and the reported mode of action and the different types of anticancer experiments used; how the phytochemicals can also improve the targeting effects of these nanoparticles in some instances; and the potential toxicity of these nanoparticles.
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Affiliation(s)
- Abdulrahman M Elbagory
- Department of Science and Innovation (DSI)/Mintek Nanotechnology Innovation Centre (NIC), Biolabels Research Node, Department of Biotechnology, University of the Western Cape, Cape Town, Private Bag X17, Bellville 7535, South Africa
| | - Rodney Hull
- SAMRC Precision Oncology Research Unit (PORU), DSI/NRF SARChI Chair in Precision Oncology and Cancer Prevention (POCP), Pan African Cancer Research Institute (PACRI), University of Pretoria, Hatfield 0028, South Africa
| | - Mervin Meyer
- Department of Science and Innovation (DSI)/Mintek Nanotechnology Innovation Centre (NIC), Biolabels Research Node, Department of Biotechnology, University of the Western Cape, Cape Town, Private Bag X17, Bellville 7535, South Africa
| | - Zodwa Dlamini
- SAMRC Precision Oncology Research Unit (PORU), DSI/NRF SARChI Chair in Precision Oncology and Cancer Prevention (POCP), Pan African Cancer Research Institute (PACRI), University of Pretoria, Hatfield 0028, South Africa
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Saliba L, Sammut K, Tonna C, Pavli F, Valdramidis V, Gatt R, Giordmaina R, Camilleri L, Atanasio W, Buhagiar J, Schembri Wismayer P. FeMn and FeMnAg biodegradable alloys: An in vitro and in vivo investigation. Heliyon 2023; 9:e15671. [PMID: 37159706 PMCID: PMC10163621 DOI: 10.1016/j.heliyon.2023.e15671] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 04/16/2023] [Accepted: 04/18/2023] [Indexed: 05/11/2023] Open
Abstract
Iron-based biodegradable metal bone graft substitutes are in their infancy but promise to fill bone defects that arise after incidents such as trauma and revision arthroplasty surgery. Before clinical use however, a better understanding of their in vivo biodegradability, potential cytotoxicity and biocompatibility is required. In addition, these implants must ideally be able to resist infection, a complication of any implant surgery. In this study there was significant in vitro cytotoxicity caused by pure Fe, FeMn, FeMn1Ag and FeMn5Ag on both human foetal osteoblast (hFOB) and mouse pre-osteoblast (MC3T3-E1) cell lines. In vivo experiments on the other hand showed no signs of ill-effect on GAERS rats with the implanted FeMn, FeMn1Ag and FeMn5Ag pins being removed largely uncorroded. All Fe-alloys showed anti-bacterial performance but most markedly so in the Ag-containing alloys, there is significant bacterial resistance in vitro.
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Affiliation(s)
- Luke Saliba
- Department of Trauma, Orthopaedics and Sports Medicine, Mater Dei Hospital, Msida, MSD 2090, Malta
- Department of Anatomy, University of Malta, Msida, MSD 2080, Malta
| | - Keith Sammut
- Department of Trauma, Orthopaedics and Sports Medicine, Mater Dei Hospital, Msida, MSD 2090, Malta
- Department of Anatomy, University of Malta, Msida, MSD 2080, Malta
| | - Christabelle Tonna
- Department of Metallurgy and Materials Engineering, University of Malta, Msida, MSD 2080, Malta
| | - Foteini Pavli
- Department of Food Sciences and Nutrition, University of Malta, Msida, MSD 2080, Malta
| | - Vasilis Valdramidis
- Department of Food Sciences and Nutrition, University of Malta, Msida, MSD 2080, Malta
| | - Ray Gatt
- Department of Trauma, Orthopaedics and Sports Medicine, Mater Dei Hospital, Msida, MSD 2090, Malta
| | - Ryan Giordmaina
- Department of Trauma, Orthopaedics and Sports Medicine, Mater Dei Hospital, Msida, MSD 2090, Malta
| | - Liberato Camilleri
- Department of Statistics and Operations Research, University of Malta, Msida, MSD 2080, Malta
| | - William Atanasio
- Mortuary and Anatomic Pathology Department, Mater Dei Hospital, Msida, MSD 2090, Malta
| | - Joseph Buhagiar
- Department of Metallurgy and Materials Engineering, University of Malta, Msida, MSD 2080, Malta
- Corresponding author.
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Oka S, Sueyoshi K, Endo T, Hisamoto H. Nanoemulsion-based silver ion-selective optode based on colorimetrically silver ion-responsive ionic liquid-based dye. ANAL SCI 2023:10.1007/s44211-023-00337-1. [PMID: 37046140 DOI: 10.1007/s44211-023-00337-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 03/30/2023] [Indexed: 04/14/2023]
Abstract
In this study, we describe the fast-responsive nanoemulsion (NE)-based silver ion (Ag+)-selective optode based on colorimetrically silver ion-responsive ionic liquid-based dye (ILD). The ILD comprises purely functional sensing molecules, a protonated cationic merocyanine dye (KD-M13-H+) and an anionic Ag+ ionophore (BDM-SO3-), and thus, it can be used for highly sensitive silver ion (Ag+) sensing due to the extremely high content of dye in the organic phase (ionic-liquid phase). However, during the Ag+ sensing, the cationic merocyanine dye is converted into electrically neutral form by deprotonation of the dye, which leads to the conversion of liquified dye into solid form in the organic phase, which makes the response time slower when ILD is used for poly(vinyl chloride) (PVC) membrane-based ion-selective optode, especially for sensing of high Ag+ concentration. To solve this problem, we focused on the use of the nano-emulsification technique. The response time of the ILD-based nanoemulsion (NE) was considerably shorter (1 s) compared to that of the ILD-based PVC membrane (a few minutes) owing to the large surface area and excellent diffusivity of the emulsion. The ILD-based NE contained a very high dye concentration (833 mmol kg-1) and exhibited approximately 12 times higher sensitivity than that of the plasticizer-based conventional NE. In the cation measurements, the ILD-based NE responded to Ag+ via a cation-exchange mechanism and demonstrated a highly selective response to Ag+ (log [Formula: see text] = - 3.0). ILD-NE was successfully applied to the detection of spiked Ag+ in a tap water sample with recoveries of 98 - 103% with a relative standard deviation (RSD) of less than 5%. In comparison with NE based on non-ionic ionophores without charge, NE based on BDM-SO3- responded to lower Ag+ concentrations owing to the effect of negative charge on the binding property. The novel ILD-based NE was capable of highly sensitive, rapid, and selective Ag+ sensing, providing potential for analytical devices applicable to high-performance on-site analysis.
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Affiliation(s)
- Shuto Oka
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Kenji Sueyoshi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Tatsuro Endo
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Hideaki Hisamoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan.
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Tian Z, Wu G, Libby M, Wu K, Jeong KJ, Kim YJ. Synthesis of biologically derived poly(pyrogallol) nanofibers for antibacterial applications. J Mater Chem B 2023; 11:3356-3363. [PMID: 36987970 PMCID: PMC10387265 DOI: 10.1039/d3tb00312d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Herein, we present the facile synthesis of poly(pyrogallol) biopolymers and their application as antibacterial agents. Pyrogallol is a class of phenolic compounds that can be found in various plants. Polymerization was performed by the auto-oxidation of pyrogallol under a hydrated condition. The microscopic image of poly(pyrogallol) shows a highly homogenous nanofibrous structure with a diameter of 100.3 ± 16.3 nm. Spectroscopic analysis by FT-IR spectroscopy, Raman spectroscopy, and XPS corroborated the formation of ether (C-O-C) bonds between the hydroxyl group and adjacent carbons of pyrogallol during polymerization. The FT-IR and XPS spectra also revealed redox-active gallol functional groups on poly(pyrogallol) nanofibers, which can be used to release free electrons and protons during oxidation followed by the generation of reactive oxygen species (ROS). The generated ROS from poly(pyrogallol) was used to inhibit the growth of bacteria, Escherichia coli, at a inhibition rates of 56.3 ± 9.7% and 95.5 ± 2.0% within 0.5 and 2 h, respectively. This finding suggests that poly(pyrogallol) can be used as a naturally occurring antibacterial agent for various biomedical and environmental applications.
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Affiliation(s)
- Zhen Tian
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, USA.
| | - Guo Wu
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, USA.
| | - Matt Libby
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, USA.
| | - Kang Wu
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, USA.
| | - Kyung Jae Jeong
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, USA.
| | - Young Jo Kim
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, USA.
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Noga M, Milan J, Frydrych A, Jurowski K. Toxicological Aspects, Safety Assessment, and Green Toxicology of Silver Nanoparticles (AgNPs)—Critical Review: State of the Art. Int J Mol Sci 2023; 24:ijms24065133. [PMID: 36982206 PMCID: PMC10049346 DOI: 10.3390/ijms24065133] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/27/2023] [Accepted: 03/06/2023] [Indexed: 03/11/2023] Open
Abstract
In recent years, research on silver nanoparticles (AgNPs) has attracted considerable interest among scientists because of, among other things, their alternative application to well-known medical agents with antibacterial properties. The size of the silver nanoparticles ranges from 1 to 100 nm. In this paper, we review the progress of research on AgNPs with respect to the synthesis, applications, and toxicological safety of AgNPs, and the issue of in vivo and in vitro research on silver nanoparticles. AgNPs’ synthesis methods include physical, chemical, and biological routes, as well as “green synthesis”. The content of this article covers issues related to the disadvantages of physical and chemical methods, which are expensive and can also have toxicity. This review pays special attention to AgNP biosafety concerns, such as potential toxicity to cells, tissues, and organs.
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Affiliation(s)
- Maciej Noga
- Department of Regulatory and Forensic Toxicology, Institute of Medical Expertise, Łódź, ul. Aleksandrowska 67/93, 91-205 Łódź, Poland
| | - Justyna Milan
- Laboratory of Innovative Toxicological Research and Analyses, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland
| | - Adrian Frydrych
- Laboratory of Innovative Toxicological Research and Analyses, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland
| | - Kamil Jurowski
- Department of Regulatory and Forensic Toxicology, Institute of Medical Expertise, Łódź, ul. Aleksandrowska 67/93, 91-205 Łódź, Poland
- Laboratory of Innovative Toxicological Research and Analyses, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland
- Correspondence: or
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35
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Pi X, Wang C, Wang D, Yin S, Jin L, Li Z, Wang L, Yue W, Yin C, Ren A. Prenatal exposure to silver is associated with an elevated risk for neural tube defects: a case-control study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:28925-28934. [PMID: 36401693 DOI: 10.1007/s11356-022-24214-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
Exposure to copper, silver, and titanium has been reported to be associated with a variety of adverse effects on humans, but it is little focused on the fetus. We investigated the associations between prenatal exposure to the three metals (copper, silver, and titanium) and risk for fetal neural tube defects (NTDs). Placental samples from 408 women with pregnancies affected by NTDs and 593 women with normal pregnancies were collected from 2003 to 2016 in Pingding, Xiyang, Shouyang, Taigu, and Zezhou counties of China. Multilevel mixed-effects logistic regression and Bayesian kernel machine regression (BKMR) were used to evaluate the single and joint effects of the metals on NTDs. Silver was associated with an increased risk for NTDs in a dose-response fashion in single-metal logistic regression, with adjusted odds ratios (95% confidence intervals) of 1.78 (1.04-3.06) and 1.92 (1.11-3.32) in the second and third tertiles, respectively, compared to the lowest tertile. BKMR revealed toxic effects of silver on NTDs and the association appeared to be linear. No interaction of silver with any of the other two metals was observed. Besides, silver concentration was positively correlated with maternal certain dietary intakes. Placental high silver concentrations are associated with an elevated risk for NTDs. Maternal diet may be a source of silver exposure.
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Affiliation(s)
- Xin Pi
- Department of Social Medicine and Health Education, School of Public Health/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Peking University, Beijing, China
| | - Chengrong Wang
- Institute of Reproductive and Child Health/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Peking University, Beijing, China
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University/Beijing Maternal and Child Health Care Hospital, Beijing, China
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Di Wang
- Institute of Reproductive and Child Health/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Peking University, Beijing, China
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Shengju Yin
- Institute of Reproductive and Child Health/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Peking University, Beijing, China
- Ministry of Education Shanghai Key Laboratory of Children's Environmental Health, School of Public Health, Shanghai Jiao Tong University, Shanghai, China
| | - Lei Jin
- Institute of Reproductive and Child Health/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Peking University, Beijing, China
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Zhiwen Li
- Institute of Reproductive and Child Health/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Peking University, Beijing, China
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Linlin Wang
- Institute of Reproductive and Child Health/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Peking University, Beijing, China
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Wentao Yue
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University/Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Chenghong Yin
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University/Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Aiguo Ren
- Institute of Reproductive and Child Health/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Peking University, Beijing, China.
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China.
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Signaling strategies of silver nanoparticles in optical and electrochemical biosensors: considering their potential for the point-of-care. Mikrochim Acta 2023; 190:91. [PMID: 36790481 PMCID: PMC9930094 DOI: 10.1007/s00604-023-05666-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 01/25/2023] [Indexed: 02/16/2023]
Abstract
Silver nanoparticles (AgNPs) have long been overshadowed by gold NPs' success in sensor and point-of-care (POC) applications. However, their unique physical, (electro)chemical, and optical properties make them excellently suited for such use, as long as their inherent higher instability toward oxidation is controlled. Recent advances in this field provide novel strategies that demonstrate that the AgNPs' inherent capabilities improve sensor performance and enable the specific detection of analytes at low concentrations. We provide an overview of these advances by focusing on the nanosized Ag (in the range of 1-100 nm) properties with emphasis on optical and electrochemical biosensors. Furthermore, we critically assess their potential for point-of-care sensors discussing advantages as well as limitations for each detection technique. We can conclude that, indeed, strategies using AgNP are ready for sensitive POC applications; however, research focusing on the simplification of assay procedures is direly needed for AgNPs to make the successful jump into actual applications.
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Treatment of infection and inflammation associated with COVID-19, multi-drug resistant pneumonia and fungal sinusitis by nebulizing a nanosilver solution. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2023; 48:102654. [PMID: 36646192 PMCID: PMC9839457 DOI: 10.1016/j.nano.2023.102654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 12/15/2022] [Accepted: 01/04/2023] [Indexed: 01/15/2023]
Abstract
Solutions containing Ag0 nanoclusters, Ag+1, and higher oxidation state silver, generated from nanocrystalline silver dressings, were anti-inflammatory against porcine skin inflammation. The dressings have clinically-demonstrated broad-spectrum antimicrobial activity, suggesting application of nanosilver solutions in treating pulmonary infection. Nanosilver solutions were tested for antimicrobial efficacy; against HSV-1 and SARS-CoV-2; and nebulized in rats with acute pneumonia. Patients with pneumonia (ventilated), fungal sinusitis, burns plus COVID-19, and two non-hospitalized patients with COVID-19 received nebulized nanosilver solution. Nanosilver solutions demonstrated pH-dependent antimicrobial efficacy; reduced infection and inflammation without evidence of lung toxicity in the rat model; and inactivated HSV-1 and SARS-CoV-2. Pneumonia patients had rapidly reduced pulmonary symptoms, recovering pre-illness respiratory function. Fungal sinusitis-related inflammation decreased immediately with infection clearance within 21 days. Non-hospitalized patients with COVID-19 experienced rapid symptom remission. Nanosilver solutions, due to anti-inflammatory, antiviral, and antimicrobial activity, may be effective for treating respiratory inflammation and infections caused by viruses and/or microbes.
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do Carmo PHF, Garcia MT, Figueiredo-Godoi LMA, Lage ACP, da Silva NS, Junqueira JC. Metal Nanoparticles to Combat Candida albicans Infections: An Update. Microorganisms 2023; 11:microorganisms11010138. [PMID: 36677430 PMCID: PMC9861183 DOI: 10.3390/microorganisms11010138] [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: 12/07/2022] [Revised: 12/29/2022] [Accepted: 01/03/2023] [Indexed: 01/06/2023] Open
Abstract
Candidiasis is an opportunistic mycosis with high annual incidence worldwide. In these infections, Candida albicans is the chief pathogen owing to its multiple virulence factors. C. albicans infections are usually treated with azoles, polyenes and echinocandins. However, these antifungals may have limitations regarding toxicity, relapse of infections, high cost, and emergence of antifungal resistance. Thus, the development of nanocarrier systems, such as metal nanoparticles, has been widely investigated. Metal nanoparticles are particulate dispersions or solid particles 10-100 nm in size, with unique physical and chemical properties that make them useful in biomedical applications. In this review, we focus on the activity of silver, gold, and iron nanoparticles against C. albicans. We discuss the use of metal nanoparticles as delivery vehicles for antifungal drugs or natural compounds to increase their biocompatibility and effectiveness. Promisingly, most of these nanoparticles exhibit potential antifungal activity through multi-target mechanisms in C. albicans cells and biofilms, which can minimize the emergence of antifungal resistance. The cytotoxicity of metal nanoparticles is a concern, and adjustments in synthesis approaches or coating techniques have been addressed to overcome these limitations, with great emphasis on green synthesis.
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Affiliation(s)
- Paulo Henrique Fonseca do Carmo
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, SP, Brazil
- Correspondence: ; Tel.: +55-12-3497-9033
| | - Maíra Terra Garcia
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, SP, Brazil
| | - Lívia Mara Alves Figueiredo-Godoi
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, SP, Brazil
| | | | - Newton Soares da Silva
- Department of Environmental Engineering, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, SP, Brazil
| | - Juliana Campos Junqueira
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, SP, Brazil
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39
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Doveri L, Taglietti A, Grisoli P, Pallavicini P, Dacarro G. Dual mode antibacterial surfaces based on Prussian blue and silver nanoparticles. Dalton Trans 2023; 52:452-460. [PMID: 36525102 DOI: 10.1039/d2dt03058f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Prussian Blue (PB) is an inexpensive, biocompatible, photothermally active material. In this paper, self-assembled monolayers of PB nanoparticles were grafted on a glass surface, protected with a thin layer of silica and decorated with spherical silver nanoparticles. This combination of a photothermally active nanomaterial, PB, and an intrinsically antibacterial one, silver, leads to a versatile coating that can be used for medical devices and implants. The intrinsic antibacterial action of nanosilver, always active over time, can be enhanced on demand by switching on the photothermal effect of PB using near infrared (NIR) radiation, which has a good penetration depth through tissues and low side effects. Glass surfaces functionalized by this layer-by-layer approach have been characterized for their morphology and composition, and their intrinsic and photothermal antibacterial effect was studied against Gram+ and Gram- planktonic bacteria.
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Affiliation(s)
- Lavinia Doveri
- University of Pavia - Department of Chemistry and Center for Health Technologies; Via Taramelli 12, I-27100 Pavia, Italy.
| | - Angelo Taglietti
- University of Pavia - Department of Chemistry and Center for Health Technologies; Via Taramelli 12, I-27100 Pavia, Italy.
| | - Pietro Grisoli
- University of Pavia - Department of Drug Science; Via Taramelli 12, I-27100 Pavia, Italy
| | - Piersandro Pallavicini
- University of Pavia - Department of Chemistry and Center for Health Technologies; Via Taramelli 12, I-27100 Pavia, Italy.
| | - Giacomo Dacarro
- University of Pavia - Department of Chemistry and Center for Health Technologies; Via Taramelli 12, I-27100 Pavia, Italy.
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40
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Asendrych-Wicik K, Zarczuk J, Walaszek K, Ciach T, Markowicz-Piasecka M. Trends in development and quality assessment of pharmaceutical formulations - F2α analogues in the glaucoma treatment. Eur J Pharm Sci 2023; 180:106315. [PMID: 36367507 DOI: 10.1016/j.ejps.2022.106315] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 10/10/2022] [Accepted: 10/27/2022] [Indexed: 12/15/2022]
Abstract
The ocular delivery route presents a number of challenges in terms of drug administration and bioavailability. The low bioavailability following topical ophthalmic administration shows that there is a clear need for in-depth research aimed at finding both more efficacious molecules and formulations precisely targeted at the site of action. Continuous technological development will eventually result in improved bioavailability, lower dosages, reduced toxicity, fewer adverse effects, and thus better patient compliance and treatment efficacy. Technological development, as well as increasingly stringent quality requirements, help stimulate analytical progress. This is also clearly evident in the case of medicinal products used in the treatment of glaucoma, which are the subject of this review. Impurity profiling of PGF2α analogues, either in the pure substance or in the finished formulation, is a crucial step in assessing their quality. The development of specific, accurate and precise stability-indicating analytical methods for determining the content and related substances seems to be an important issue in relation to this tasks. A total of 27 official and in-house analytical methods are presented that are used for the analysis of latanoprost, travoprost and bimatoprost. The conditions for chromatographic separation with UV or MS/MS detection and the available results obtained during method validation are described. In addition, several aspects are discussed, with particular emphasis on the instability of the analogues in aqueous solution and the phenomenon of isomerism, which affects a potentially large number of degradation products.
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Affiliation(s)
- Katarzyna Asendrych-Wicik
- Analytical Laboratory, Research and Development Department, Polfa Warszawa S.A., ul. Karolkowa 22/24, Warsaw 01-207, Poland; Department of Pharmaceutical Chemistry, Drug Analysis and Radiopharmacy, Medical University of Łódź, ul. Muszyńskiego 1, Łódź 90-151, Poland
| | - Jakub Zarczuk
- Liquid Dosage Form Laboratory, Research and Development Department, Polfa Warszawa S.A., Karolkowa 22/24, Warsaw 01-207, Poland; BioMedical Engineering Laboratory Department of Biotechnology and Bioprocess Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, ul. Waryńskiego 1, Warsaw 00-645, Poland.
| | - Katarzyna Walaszek
- Technical Research and Development Quality Assurance, Polpharma Bioologics, ul. Spółdzielcza 4, Duchnice 05-850, Poland
| | - Tomasz Ciach
- BioMedical Engineering Laboratory Department of Biotechnology and Bioprocess Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, ul. Waryńskiego 1, Warsaw 00-645, Poland
| | - Magdalena Markowicz-Piasecka
- Department of Pharmaceutical Chemistry, Drug Analysis and Radiopharmacy, Medical University of Łódź, ul. Muszyńskiego 1, Łódź 90-151, Poland
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41
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Staxrud F, Becher R, Syverud M, Azulay N, Valen H. Silver release from dentine treated with combinations of silver diamine fluoride, potassium iodide and etching. Biomater Investig Dent 2023; 10:2191634. [PMID: 37090483 PMCID: PMC10120521 DOI: 10.1080/26415275.2023.2191634] [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] [Indexed: 04/25/2023] Open
Abstract
For individuals with very high to extremely high caries activity and poor control of daily oral hygiene, a simple treatment for arresting their caries activity is necessary. Silver Diamine Fluoride (SDF) has become increasingly common for this purpose due to its efficacy and ease of application. To avoid or reduce tooth discoloration after SDF treatment potassium iodide (KI) may be applied. However, the release of silver from SDF-treated tooth surfaces may be of concern. Thus, the aim of the present study was to quantify the amount of silver leached in both a short- and long-term perspective. In this in vitro experiment we measured the cumulative release of silver from SDF-treated dentin surfaces with and without imminent application of KI, and with and without phosphoric acid etching as pre-treatment, after 24 h and weekly for four weeks. The release of silver was highest after 24 h for all treatment groups, with a significant drop after this point. When etching was not used, the use of KI did not affect the release of silver. However, when etching was used, there was a significantly lower silver release when KI was also used compared to when KI was not used. This effect was largest for the first two weeks, after which the difference was smaller as all groups released low amounts of silver.
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Affiliation(s)
- Frode Staxrud
- Nordic Institute of Dental Materials, NIOM, Oslo, Norway
- CONTACT Frode Staxrud Nordic Institute of Dental Materials, NIOM, Oslo, Norway
| | - Rune Becher
- Nordic Institute of Dental Materials, NIOM, Oslo, Norway
| | - Morten Syverud
- Nordic Institute of Dental Materials, NIOM, Oslo, Norway
| | - Naomi Azulay
- Nordic Institute of Dental Materials, NIOM, Oslo, Norway
| | - Håkon Valen
- Nordic Institute of Dental Materials, NIOM, Oslo, Norway
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42
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Rybka M, Mazurek Ł, Konop M. Beneficial Effect of Wound Dressings Containing Silver and Silver Nanoparticles in Wound Healing-From Experimental Studies to Clinical Practice. LIFE (BASEL, SWITZERLAND) 2022; 13:life13010069. [PMID: 36676019 PMCID: PMC9864212 DOI: 10.3390/life13010069] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/22/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022]
Abstract
Impaired wound healing affects hundreds of million people around the world; therefore, chronic wounds are a major problem not only for the patient, but also for already overloaded healthcare systems. Chronic wounds are always very susceptible to infections. Billions of dollars are spent to discover new antibiotics as quickly as possible; however, bacterial resistance against antibiotics is rising even faster. For this reason, a complete shift of the antibacterial treatment paradigm is necessary. The development of technology has allowed us to rediscover well-known agents presenting antimicrobial properties with a better outcome. In this context, silver nanoparticles are a promising candidate for use in such therapy. Silver has many useful properties that can be used in the treatment of chronic wounds, such as anti-bacterial, anti-inflammatory, and anti-oxidative properties. In the form of nanoparticles, silver agents can work even more effectively and can be more easily incorporated into various dressings. Silver-based dressings are already commercially available; however, innovative combinations are still being discovered and very promising results have been described. In this review article, the authors focused on describing experimental and clinical studies exploring dressings containing either silver or silver nanoparticles, the results of which have been published in recent years.
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Self-Disinfecting Urethral Catheter to Overcome Urinary Infections: From Antimicrobial Photodynamic Action to Antibacterial Biochemical Entities. Microorganisms 2022; 10:microorganisms10122484. [PMID: 36557737 PMCID: PMC9785902 DOI: 10.3390/microorganisms10122484] [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: 10/21/2022] [Revised: 11/18/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Medical-device-related infections are considered a worldwide public health problem. In particular, urinary catheters are responsible for 75% of cases of hospital urinary infections (a mortality rate of 2.3%) and present a high cost for public and private health systems. Some actions have been performed and described aiming to avoid it, including clinical guidelines for catheterization procedure, antibiotic prophylaxis, and use of antimicrobial coated-urinary catheters. In this review paper, we present and discuss the functionalization of urinary catheters surfaces with antimicrobial entities (e.g., photosensitizers, antibiotics, polymers, silver salts, oxides, bacteriophage, and enzymes) highlighting the immobilization of photosensitizing molecules for antimicrobial photodynamic applications. Moreover, the characterization techniques and (photo)antimicrobial effects of the coated-urinary catheters are described and discussed. We highlight the most significant examples in the last decade (2011-2021) concerning the antimicrobial coated-urinary catheter and their potential use, limitations, and future perspectives.
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44
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A Greener Technique for Microwave-Assisted O-Silylation and Silyl Ether Deprotection of Uridine and Other Substrates. CHEMISTRY 2022. [DOI: 10.3390/chemistry4040112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
A single clean, good-yielding, environment-friendly microwave-assisted procedure for O-silylation of uridine with tert-butyldimethylsilyl chloride (TBDMSCl), 1,8-Diazabicyclo(5.4.0)undec-7-ene (DBU) and potassium nitrate as catalyst under solvent-free conditions is reported. Subsequent silyl ether deprotection is accomplished with a reusable acidic resin via microwave irradiation. Both the silylation and desilylation protocols have been applied to a panel of alcohols of pharmaceutical interest.
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Milan J, Frydrych A, Noga M, Kondratowicz-Pietruszka E, Krośniak M, Jurowski K. The Control of Novel and Traditional Elemental Impurities: Ag, Au, Co, Cs, Li, Mo, Se, Sr, and V in Mint Tea Infusions (Peppermint, Mentha piperita L.) Available in Poland: A Health Risk Assessment. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph192416564. [PMID: 36554444 PMCID: PMC9779088 DOI: 10.3390/ijerph192416564] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/02/2022] [Accepted: 12/08/2022] [Indexed: 05/19/2023]
Abstract
The purpose of our studies is the evaluation of the health risks of the novel elemental impurities (Ag, Au, Co, Cs, Li, Mo, Se, Sr, and V) in mint tea infusions (Mentha piperita L.) available in Poland. For this purpose, we applied ICP-MS-based methodology for content analysis (elemental profile and µg/L of the infusion) and also the specific health risk assessment for a comprehensive assessment. Our strategy was based on weekly intake (µg/L of infusion/week) considering weekly tea consumption. Then, based on the weekly consumption of tea per adult, individuals were compared to the Temporary Tolerated Weekly Intake (PTWI) designated by the Joint FAO Expert Committee on Food Additives (JECFA), and the weekly consumption per body weight (µg/L of infusion/week/bw) was estimated. Daily exposure to Co in the tested products is in a range of 0.093-0.238 µg/day. In comparison, the established PDE (oral exposure) for Co by the ICH guideline (the ICH guideline Q3D (R1), 2019) is 50 µg/day. For lithium, PDE is approximately 560 µg/day and, in our study, the estimated daily exposure for Li in investigated products is in a range of 0.226-2.41 µg/day. Our studies found also low levels of Cs (in a range of 0.0598-0.195 µg/L), Mo (in a range of 0.663-3.261 µg/L), and Sr (0.223-65.842 µg/L) in infusions. For Molybdenum, the established PDE is approximately 3400 µg/day. There are no documents about Sr and Co in the Joint FAO/WHO Expert Committee on Food Additives (JECFA) database and the ICH guideline Q3D (R1). In the case of V, the established PDE is 120 µg/day, and the level of V in analyzed infusions is in a range of 0.284-0.702 µg/L. Silver and gold were present only in a few samples, and the estimated daily exposure for Ag is approximately 0.04575 µg/day for product A and approximately 0.1885 µg/day for product O, except for Au, which is in a range of 0.000356-0.114 µg/L. The estimated daily exposure for Ag is 167 µg/day and, for Au, it is in a range of 8.9 × 105-0.0285 µg/day. It can be concluded that levels of all investigated elements (novel and also traditional elemental impurities) in the daily dose should not threaten the consumer's health after consuming mint tea infusions.
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Affiliation(s)
- Justyna Milan
- Laboratory of Innovative Toxicological Research and Analyses, Institute of Medical Studies, Medical College, Rzeszów University, Aleja Majora W. Kopisto 2a, 35-959 Rzeszow, Poland
| | - Adrian Frydrych
- Laboratory of Innovative Toxicological Research and Analyses, Institute of Medical Studies, Medical College, Rzeszów University, Aleja Majora W. Kopisto 2a, 35-959 Rzeszow, Poland
| | - Maciej Noga
- Department of Regulatory and Forensic Toxicology, Institute of Medical Expertises, Aleksandrowska 67/93, 91-205 Łódź, Poland
| | | | - Mirosław Krośniak
- Department of Food Chemistry and Nutrition, Medical College, Jagiellonian University, Medyczna 9, 30-688 Kraków, Poland
| | - Kamil Jurowski
- Laboratory of Innovative Toxicological Research and Analyses, Institute of Medical Studies, Medical College, Rzeszów University, Aleja Majora W. Kopisto 2a, 35-959 Rzeszow, Poland
- Department of Regulatory and Forensic Toxicology, Institute of Medical Expertises, Aleksandrowska 67/93, 91-205 Łódź, Poland
- Correspondence: or
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46
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Mills R, Baldridge KC, Bernard M, Bhattacharyya D. Recent Advances in Responsive Membrane Functionalization Approaches and Applications. SEP SCI TECHNOL 2022; 58:1202-1236. [PMID: 37063489 PMCID: PMC10103845 DOI: 10.1080/01496395.2022.2145222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 10/28/2022] [Indexed: 11/25/2022]
Abstract
In recent years, significant advances have been made in the field of functionalized membranes. With the functionalization using various materials, such as polymers and enzymes, membranes can exhibit property changes in response to an environmental stimulation, such as heat, light, ionic strength, or pH. The resulting responsive nature allows for an increased breadth of membrane uses, due to the developed functionalization properties, such as smart-gating filtration for size-selective water contaminant removal, self-cleaning antifouling surfaces, increased scalability options, and highly sensitive molecular detection. In this review, new advances in both fabrication and applications of functionalized membranes are reported and summarized, including temperature-responsive, pH-responsive, light-responsive, enzyme-functionalized, and two-dimensional material-functionalized membranes. Specific emphasis was given to the most recent technological improvements, current limitations, advances in characterization techniques, and future directions for the field of functionalized membranes.
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Affiliation(s)
- Rollie Mills
- Department of Chemical and Materials Engineering, University of Kentucky; Lexington, KY 40506, USA
| | - Kevin C. Baldridge
- Department of Chemical and Materials Engineering, University of Kentucky; Lexington, KY 40506, USA
| | - Matthew Bernard
- Department of Chemical and Materials Engineering, University of Kentucky; Lexington, KY 40506, USA
| | - Dibakar Bhattacharyya
- Department of Chemical and Materials Engineering, University of Kentucky; Lexington, KY 40506, USA
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Kurniawan D, Sharma N, Rahardja MR, Cheng YY, Chen YT, Wu GX, Yeh YY, Yeh PC, Ostrikov KK, Chiang WH. Plasma Nanoengineering of Bioresource-Derived Graphene Quantum Dots as Ultrasensitive Environmental Nanoprobes. ACS APPLIED MATERIALS & INTERFACES 2022; 14:52289-52300. [PMID: 36349361 DOI: 10.1021/acsami.2c15251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Environmental contamination and energy shortage are among the most critical global issues that require urgent solutions to ensure sustainable ecological balance. Rapid and ultrasensitive monitoring of water quality against pollutant contaminations using a low-cost, easy-to-operate, and environmentally friendly technology is a promising yet not commonly available solution. Here, we demonstrate the effective use of plasma-converted natural bioresources for environmental monitoring. The energy-efficient microplasmas operated at ambient conditions are used to convert diverse bioresources, including fructose, chitosan, citric acid, lignin, cellulose, and starch, into heteroatom-doped graphene quantum dots (GQDs) with controlled structures and functionalities for applications as fluorescence-based environmental nanoprobes. The simple structure of citric acid enables the production of monodispersed 3.6 nm averaged-size GQDs with excitation-independent emissions, while the saccharides including fructose, chitosan, lignin, cellulose, and starch allow the synthesis of GQDs with excitation-dependent emissions due to broader size distribution. Moreover, the presence of heteroatoms such as N and/or S in the chemical structures of chitosan and lignin coupled with the highly reactive species generated by the plasma facilitates the one-step synthesis of N, S-codoped GQDs, which offer selective detection of toxic environmental contaminants with a low limit of detection of 7.4 nM. Our work provides an insight into the rapid and green fabrication of GQDs with tunable emissions from natural resources in a scalable and sustainable manner, which is expected to generate impact in the environmental safety, energy conversion and storage, nanocatalysis, and nanomedicine fields.
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Affiliation(s)
- Darwin Kurniawan
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei10607, Taiwan
| | - Neha Sharma
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei10607, Taiwan
| | - Michael Ryan Rahardja
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei10607, Taiwan
| | - Yu-Yuan Cheng
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei10607, Taiwan
| | - Yan-Teng Chen
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei10607, Taiwan
| | - Guan-Xian Wu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei10607, Taiwan
| | - Yen-Yu Yeh
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei10607, Taiwan
| | - Pei-Chun Yeh
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei10607, Taiwan
| | - Kostya Ken Ostrikov
- School of Chemistry and Physics and QUT Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, Queensland4000, Australia
| | - Wei-Hung Chiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei10607, Taiwan
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Hkiri S, Coşkun KA, Üstün E, Samarat A, Tutar Y, Şahin N, Sémeril D. Silver(I) Complexes Based on Oxadiazole-Functionalized α-Aminophosphonate: Synthesis, Structural Study, and Biological Activities. Molecules 2022; 27:8131. [PMID: 36500224 PMCID: PMC9738469 DOI: 10.3390/molecules27238131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/15/2022] [Accepted: 11/16/2022] [Indexed: 11/25/2022] Open
Abstract
Two silver(I) complexes, bis{diethyl[(5-phenyl-1,3,4-oxadiazol-2-yl-κN3:κN4-amino) (4-trifluoromethylphenyl)methyl]phosphonate-(tetrafluoroborato-κF)}-di-silver(I) and tetrakis-{diethyl[(5-phenyl-1,3,4-oxadiazol-2-yl-κN3-amino)(4-trifluoromethylphenyl)methyl]phosphonate} silver(I) tetrafluoroborate, were prepared starting from the diethyl[(5-phenyl-1,3,4-oxadiazol-2-yl-amino)(4-trifluoromethylphenyl)methyl]phosphonate (1) ligand and AgBF4 salt in Ag/ligand ratios of 1/1 and 1/4, respectively. The structure, stoichiometry, and geometry of the silver complexes were fully characterized by elemental analyses, infrared, single-crystal X-ray diffraction studies, multinuclear NMR, and mass spectroscopies. The binuclear complex ([Ag2(1)2(BF4)2]; 2) crystallizes in the monoclinic asymmetric space group P21/c and contains two silver atoms adopting a {AgN2F} planar trigonal geometry, which are simultaneously bridged by two oxadiazole rings of two ligands, while the mononuclear complex ([Ag(1)4]BF4; 3) crystallizes in the non-usual cubic space group Fd-3c in which the silver atom binds to four distinct electronically enriched nitrogen atoms of the oxadiazole ring, in a slightly distorted {AgN4} tetrahedral geometry. The α-aminophosphonate and the monomeric silver complex were evaluated in vitro against MCF-7 and PANC-1 cell lines. The silver complex is promising as a drug candidate for breast cancer and the pancreatic duct with half-maximal inhibitory concentration (IC50) values of 8.3 ± 1.0 and 14.4 ± 0.6 μM, respectively. Additionally, the interactions of the ligand and the mononuclear complex with Vascular Endothelial Growth Factor Receptor-2 and DNA were evaluated by molecular docking methods.
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Affiliation(s)
- Shaima Hkiri
- Synthèse Organométallique et Catalyse, UMR-CNRS 7177, University of Strasbourg, 4 rue Blaise Pascal, 67008 Strasbourg, France
- Laboratory of Hetero-Organic Compounds and Nanostructured Materials (LR18ES11), Faculty of Sciences of Bizerte, University of Carthage, Bizerte 7021, Tunisia
| | - Kübra Açıkalın Coşkun
- Department of Medical Biology and Genetics, Faculty of Medicine, University of İstanbul Aydın, Istanbul 34295, Turkey
| | - Elvan Üstün
- Department of Chemistry, Faculty of Art and Science, University of Ordu, Ordu 52200, Turkey
| | - Ali Samarat
- Laboratory of Hetero-Organic Compounds and Nanostructured Materials (LR18ES11), Faculty of Sciences of Bizerte, University of Carthage, Bizerte 7021, Tunisia
| | - Yusuf Tutar
- Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, University of Health Sciences-Turkey, Istanbul 34668, Turkey
| | - Neslihan Şahin
- Department of Science Education, Faculty of Education, University of Cumhuriyet, Sivas 58140, Turkey
| | - David Sémeril
- Synthèse Organométallique et Catalyse, UMR-CNRS 7177, University of Strasbourg, 4 rue Blaise Pascal, 67008 Strasbourg, France
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Kucukoduk A, Durmus IM, Aksoy M, Karakurt S. Cytotoxic, Apoptotic, and Oxidative Effects of Preserved and Preservative-Free Brimonidine in a Corneal Epithelial Cell Line. J Ocul Pharmacol Ther 2022; 38:576-583. [PMID: 36178959 DOI: 10.1089/jop.2022.0053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Purpose: This study aims to compare the cytotoxic, apoptotic, and oxidative effects of preserved and preservative-free forms of brimonidine 0.15% on the human corneal epithelial cell (HCEC) line. Methods: Time-dependent cytotoxicity studies were performed with the Alamar Blue method. For apoptotic studies, PE Annexin V and 7-amino-actinomycin (7-AAD) staining and flow cytometry were performed. Messenger RNA (mRNA) expressions of Bax, Bcl-2, and caspase-3, -9, -12, and protein expressions of Bax and Bcl-2 were evaluated by quantitative real-time polymerase chain reaction and Western blot method, respectively. Results: Cell viability was 76.4% with the preserved solution and 36.05% with the preservative-free solution at the fifth minute. No significant difference was observed with either solution at the 15-min mark, whereas cell viability did not change significantly after 1 h. In the apoptosis evaluation, it was observed that the preservative-free solution increased the early apoptotic activity to a greater degree (P < 0.05). Preservative-free solution also induced gene expression of proapoptotic Bax, caspase-9 and -12, and protein expression of Bax while reducing the protein expression of anti-apoptotic Bcl-2 (P < 0.0001). Preserved solution induced only the gene expression of caspase-12, and reduced the protein expression of Bcl-2 (P < 0.0001). No significant difference was observed in the reactive oxygen species (ROS) levels of either solution compared with the control group (P > 0.05). Conclusion: It was demonstrated that the preserved solution is less cytotoxic to the HCEC line in the early period, has less early apoptotic activity, and does not significantly increase ROS levels.
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Affiliation(s)
- Ali Kucukoduk
- Department of Ophthalmology, Faculty of Medicine, KTO Karatay University, Konya, Turkey
| | - Irem Mukaddes Durmus
- Department of Biochemistry, Faculty of Science, Selcuk University, Konya, Turkey
| | - Mustafa Aksoy
- Assistant Professor, Opticianry, Izmir Kavram Vocational School, Izmir, Turkey.,Dunyagoz Hospital, Izmır, Turkey
| | - Serdar Karakurt
- Department of Biochemistry, Faculty of Science, Selcuk University, Konya, Turkey
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50
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Landeros-Páramo L, Saavedra-Molina A, Gómez-Hurtado MA, Rosas G. The effect of AgNPS bio-functionalization on the cytotoxicity of the yeast Saccharomyces cerevisiae. 3 Biotech 2022; 12:196. [PMID: 35928500 PMCID: PMC9343563 DOI: 10.1007/s13205-022-03276-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 07/21/2022] [Indexed: 11/29/2022] Open
Abstract
This work used Sedum praealtum leaf extract to synthesize silver nanoparticles (AgNPs) in a single step. The cytotoxicity of AgNPs was studied with the yeast Saccharomyces cerevisiae W303-1. In addition, the antioxidant activity of the DPPH radical was studied both in the extract of S. praealtum and in the AgNPs. UV-Vis spectroscopy determined the presence of AgNPs by the location of the surface plasmon resonance (SPR) band at 434 nm. TEM and XRD analyzes show AgNPs with fcc structure and hemispherical morphology. Also, AgNPs range in size from 5 to 25 nm and have an average size of 14 nm. 1H NMR, FTIR, and UV-Vis spectroscopy techniques agreed that glycosidic compounds were the main phytochemical components responsible for the reduction and stabilization of AgNPs. In addition, AgNPs presented a maximum of 12% toxicity in yeast attributed to the generation of ROS. Consequently, there was low bioactivity because glycoside compounds cover the biosynthesized AgNPs from S. praealtum. These findings allow applications of AgNPs involving contact with mammals and higher organisms.
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Affiliation(s)
- L. Landeros-Páramo
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, Edificio U., Ciudad Universitaria, C.P. 58030 Morelia, Michoacán México
| | - A. Saavedra-Molina
- Instituto de Investigaciones Químico Biológicas, UMSNH, edificio B-3., Ciudad Universitaria, C.P. 58030 Morelia, Michoacán México
| | - Mario A. Gómez-Hurtado
- Instituto de Investigaciones Químico Biológicas, UMSNH, edificio B-3., Ciudad Universitaria, C.P. 58030 Morelia, Michoacán México
| | - G. Rosas
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, Edificio U., Ciudad Universitaria, C.P. 58030 Morelia, Michoacán México
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