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Hyder A, Ali A, Buledi JA, Memon R, Al-Anzi BS, Memon AA, Kazi M, Solangi AR, Yang J, Thebo KH. A NiO-nanostructure-based electrochemical sensor functionalized with supramolecular structures for the ultra-sensitive detection of the endocrine disruptor bisphenol S in an aquatic environment. Phys Chem Chem Phys 2024; 26:10940-10950. [PMID: 38526327 DOI: 10.1039/d4cp00138a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Herein, NiO nanoparticles (NPs) functionalized with a para-hexanitrocalix[6]arene derivative (p-HNC6/NiO) were synthesized by using a facile method and applied as a selective electrochemical sensor for the determination of bisphenol S (BPS) in real samples. Moreover, the functional interactions, phase purities, surface morphologies and elemental compositions of the synthesized p-HNC6/NiO NPs were investigated via advanced analytical tools, such as Fourier-transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX). Additionally, the synthesized p-HNC6/NiO NPs were cast on the surface of a bare glassy carbon electrode (GCE) via a drop casting method, which resulted in uniform deposition of p-HNC6/NiO/GCE over the surface of the GCE. Additionally, the developed p-HNC6/NiO/GCE sensor demonstrated an outstanding electrochemical response to BPS under optimized conditions, including a supporting electrolyte, a Briton-Robinson buffer electrolyte at pH 4, a scan rate of 110 mV s-1 and a potential window of between -0.2 and 1.0 V. The wide linear dynamic range was optimized to 0.8-70 μM to obtain a brilliant linear calibration curve for BPS. The limit of detection (LOD) and limit of quantification (LOQ) of the developed sensor were estimated to be 0.0059 and 0.019 μM, respectively, which are lower than those of reported sensors for BPS. The feasibility of the developed method was successfully assessed by analyzing the content of BPS in waste water samples, and good recoveries were achieved.
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Affiliation(s)
- Ali Hyder
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan.
| | - Akbar Ali
- State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering (IPE), Chinese Academy of Sciences, Beijing 100F190, China.
- University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Jamil Ahmed Buledi
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan.
| | - Roomia Memon
- Sabanci University, SUNUM Nanotechnology Research and Application Center, Tuzla, 34956, Istanbul, Turkey
| | - Bader S Al-Anzi
- Department of Environmental Sciences, Kuwait University, P.O. Box 5969, Safat, 13060, Kuwait.
| | - Ayaz Ali Memon
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan.
| | - Mohsin Kazi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box-2457, Riyadh 11451, Saudi Arabia
| | - Amber Rehana Solangi
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan.
| | - Jun Yang
- State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering (IPE), Chinese Academy of Sciences, Beijing 100F190, China.
- University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Khalid Hussain Thebo
- Institute of Metal Research (IMR), Chinese Academy of Science, 2 Wenhua Rood, Shenyang, China.
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2
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Jones C, Kershaw Cook LJ, Slater AG, Yufit DS, Steed JW. Scrolling in Supramolecular Gels: A Designer's Guide. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2024; 36:2799-2809. [PMID: 38558920 PMCID: PMC10976645 DOI: 10.1021/acs.chemmater.3c03013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 04/04/2024]
Abstract
Gelation by small molecules is a topic of enormous importance in catalysis, nanomaterials, drug delivery, and pharmaceutical crystallization. The mechanism by which gelators self-organize into a fibrous gel network is poorly understood. Herein, we describe the crystal structures and gelation properties of a library of bis(urea) compounds and show, via molecular dynamics simulations, how gelator aggregation progresses from a continuous pattern of supramolecular motifs to a homogeneous fiber network. Our model suggests that lamellae with asymmetric surfaces scroll into uniform unbranched fibrils, while sheets with symmetric surfaces undergo stacking to form crystals. The self-assembly of asymmetric lamellae is associated with specific molecular features, such as the presence of narrow and flexible end groups with high packing densities, and likely represents a general mechanism for the formation of small-molecule gels.
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Affiliation(s)
| | - Laurence J. Kershaw Cook
- Department
of Chemistry and Materials Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.
| | - Anna G. Slater
- Department
of Chemistry and Materials Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.
| | - Dmitry S. Yufit
- Department
of Chemistry, Durham University, Durham DH1 3LE, U.K.
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3
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Pashkina E, Aktanova A, Boeva O, Bykova M, Gavrilova E, Goiman E, Kovalenko E, Saleh N, Grishina L, Kozlov V. Evaluation of the Immunosafety of Cucurbit[n]uril In Vivo. Pharmaceutics 2024; 16:127. [PMID: 38276497 PMCID: PMC10820314 DOI: 10.3390/pharmaceutics16010127] [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: 11/22/2023] [Revised: 01/08/2024] [Accepted: 01/16/2024] [Indexed: 01/27/2024] Open
Abstract
Cucurbiturils are a family of macrocyclic oligomers capable of forming host-guest complexes with various molecules. Due to noncovalent binding to drug molecules and low toxicity, cucurbiturils has been extensively investigated as potential carriers for drug delivery. However, the immune system's interactions with different drug carriers, including cucurbiturils, are still under investigation. In this study, we focused on cucurbiturils' immunosafety and immunomodulation properties in vivo. We measured blood counts and lymphocyte subpopulations in blood, spleen, and bone marrow, and assessed the in vivo toxicity to spleen and bone marrow cells after intraperitoneal administration to BALB/c mice. When assessing the effect of cucurbit[6]uril on blood parameters after three intraperitoneal injections within a week in laboratory animals, a decrease in white blood cells was found in mice after injections of cucurbit[6]util, but the observed decrease in the number of white blood cells was within the normal range. At the same time, cucurbit[7]uril and cucurbit[8]uril did not affect the leukocyte counts of mice after three injections. Changes in the number of platelets, erythrocytes, and monocytes, as well as in several other indicators, such as hematocrit or erythrocyte volumetric dispersion, were not detected. We show that cucurbiturils do not have immunotoxicity in vivo, with the exception of a cytotoxic effect on spleen cells after сucurbit[7]uril administration at a high dosage. We also evaluated the effect of cucurbiturils on cellular and humoral immune responses. We founded that cucurbiturils in high concentrations affect the immune system in vivo, and the action of various cucurbiturils differs in different homologues, which is apparently associated with different interactions in the internal environment of the body.
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Affiliation(s)
- Ekaterina Pashkina
- Research Institute of Fundamental and Clinical Immunology, 14, Yadrintsevskaya St., 630099 Novosibirsk, Russia
- Department of Clinical Immunology, Novosibirsk State Medical University, 52, Krasny Prospect, 630091 Novosibirsk, Russia
| | - Alina Aktanova
- Research Institute of Fundamental and Clinical Immunology, 14, Yadrintsevskaya St., 630099 Novosibirsk, Russia
- Department of Clinical Immunology, Novosibirsk State Medical University, 52, Krasny Prospect, 630091 Novosibirsk, Russia
| | - Olga Boeva
- Research Institute of Fundamental and Clinical Immunology, 14, Yadrintsevskaya St., 630099 Novosibirsk, Russia
| | - Maria Bykova
- Research Institute of Fundamental and Clinical Immunology, 14, Yadrintsevskaya St., 630099 Novosibirsk, Russia
| | - Elena Gavrilova
- Research Institute of Fundamental and Clinical Immunology, 14, Yadrintsevskaya St., 630099 Novosibirsk, Russia
| | - Elena Goiman
- Research Institute of Fundamental and Clinical Immunology, 14, Yadrintsevskaya St., 630099 Novosibirsk, Russia
| | | | - Na’il Saleh
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates;
| | - Lyubov Grishina
- Research Institute of Fundamental and Clinical Immunology, 14, Yadrintsevskaya St., 630099 Novosibirsk, Russia
| | - Vladimir Kozlov
- Research Institute of Fundamental and Clinical Immunology, 14, Yadrintsevskaya St., 630099 Novosibirsk, Russia
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4
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Cvetnić M, Šplajt R, Topić E, Rubčić M, Bregović N. Direct thermodynamic characterization of solid-state reactions by isothermal calorimetry. Phys Chem Chem Phys 2023; 26:67-75. [PMID: 37955204 DOI: 10.1039/d3cp03933a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Despite the growing importance of solid-state reactions, their thermodynamic characterization has largely remained unexplored. This is in part due to the lack of methodology for measuring the heat effects related to reactions between solid reactants. We address here this gap and report on the first direct thermodynamic study of chemical reactions between solid reactants by isothermal calorimetry. Three reaction classes, cationic host-guest complex formation, molecular co-crystallization, and Baeyer-Villiger oxidation were investigated, showcasing the versatility of the devised methodology to provide detailed insight into the enthalpy changes related to various reactions. The reliability of the method was confirmed by correlation with the values obtained via solution calorimetry using Hess's law. The thermodynamic characterization of solid-state reactions described here will enable a deeper understanding of the factors governing solid-state processes.
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Affiliation(s)
- Marija Cvetnić
- University of Zagreb, Faculty of Science, Department of Chemistry, Horvatovac, 102/A, Zagreb 10 000, Croatia.
| | - Robert Šplajt
- University of Zagreb, Faculty of Science, Department of Chemistry, Horvatovac, 102/A, Zagreb 10 000, Croatia.
| | - Edi Topić
- University of Zagreb, Faculty of Science, Department of Chemistry, Horvatovac, 102/A, Zagreb 10 000, Croatia.
| | - Mirta Rubčić
- University of Zagreb, Faculty of Science, Department of Chemistry, Horvatovac, 102/A, Zagreb 10 000, Croatia.
| | - Nikola Bregović
- University of Zagreb, Faculty of Science, Department of Chemistry, Horvatovac, 102/A, Zagreb 10 000, Croatia.
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Li SH, Li BB, Zhao XL, Wu H, Chai RL, Li GY, Zhu D, He G, Zhang HF, Xie KK, Cheng B, Zhao Q. Macrocycle Self-Assembly Hydrogel for High-Efficient Oil-Water Separation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301934. [PMID: 37271893 DOI: 10.1002/smll.202301934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/16/2023] [Indexed: 06/06/2023]
Abstract
Supramolecular hydrogels involved macrocycles have been explored widely in recent years, but it remains challenging to develop hydrogel based on solitary macrocycle with super gelation capability. Here, the construction of lantern[33 ]arene-based hydrogel with low critical gelation concentration (0.05 wt%), which can be used for efficient oil-water separation, is reported. The lantern[33 ]arenes self-assemble into hydrogen-bonded organic nanoribbons, which intertwine into entangled fibers to form hydrogel. This hydrogel which exhibits reversible pH-responsiveness characteristics can be coated on stainless-steel mesh by in situ sol-gel transformation. The resultant mesh exhibits excellent oil-water separation efficiency (>99%) and flux (>6 × 104 L m-2 h-1 ). This lantern[33 ]arene-based hydrogel not only sheds additional light on the gelation mechanisms for supramolecular hydrogels, but also extends the application of macrocycle-based hydrogels as functional interfacial materials.
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Affiliation(s)
- Sheng-Hua Li
- Department of Materials, College of Chemical Engineering and Materials Science, Department of Chemistry, College of Sciences, Tianjin University of Science & Technology, Tianjin, 300457, China
| | - Bin-Bin Li
- Department of Materials, College of Chemical Engineering and Materials Science, Department of Chemistry, College of Sciences, Tianjin University of Science & Technology, Tianjin, 300457, China
| | - Xue-Lin Zhao
- Department of Materials, College of Chemical Engineering and Materials Science, Department of Chemistry, College of Sciences, Tianjin University of Science & Technology, Tianjin, 300457, China
| | - Huang Wu
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
| | - Rui-Lin Chai
- Department of Materials, College of Chemical Engineering and Materials Science, Department of Chemistry, College of Sciences, Tianjin University of Science & Technology, Tianjin, 300457, China
| | - Guang-Yue Li
- Department of Applied Chemistry, College of Chemical Engineering, North China University of Science and Technology, Tangshan, 063210, China
| | - Di Zhu
- Tianjin Changlu Advanced Materials Research Institute Co., Ltd., Tianjin, 300350, China
| | - Guangrui He
- Tianjin Changlu Advanced Materials Research Institute Co., Ltd., Tianjin, 300350, China
| | - Hai-Fu Zhang
- Department of Materials, College of Chemical Engineering and Materials Science, Department of Chemistry, College of Sciences, Tianjin University of Science & Technology, Tianjin, 300457, China
| | - Ke-Ke Xie
- Department of Materials, College of Chemical Engineering and Materials Science, Department of Chemistry, College of Sciences, Tianjin University of Science & Technology, Tianjin, 300457, China
| | - Bowen Cheng
- Department of Materials, College of Chemical Engineering and Materials Science, Department of Chemistry, College of Sciences, Tianjin University of Science & Technology, Tianjin, 300457, China
- State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin University of Science and Technology, Tianjin, 300457, P. R. China
| | - Qian Zhao
- Department of Materials, College of Chemical Engineering and Materials Science, Department of Chemistry, College of Sciences, Tianjin University of Science & Technology, Tianjin, 300457, China
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6
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Hyder A, Thebo M, Janwery D, Buledi JA, Chandio I, Khalid A, Al-Anzi BS, Almukhlifi HA, Thebo KH, Memon FN, Memon AA, Solangi AR, Memon S. Fabrication of para-dimethylamine calix[4]arene functionalized self-assembled graphene oxide composite material for effective removal of 2, 4, 6-tri-Cholorphenol from aqueous environment. Heliyon 2023; 9:e19622. [PMID: 37810164 PMCID: PMC10558887 DOI: 10.1016/j.heliyon.2023.e19622] [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: 02/23/2023] [Revised: 08/09/2023] [Accepted: 08/28/2023] [Indexed: 10/10/2023] Open
Abstract
Water pollution caused by the release of organic pollutants is a major environmental concern worldwide. These pollutants can have harmful effects on aquatic ecosystems and the organisms living within them, as well as on human health when contaminated water is consumed. It is essential to implement proper treatment and management strategies to prevent and mitigate water pollution. Moreover, the major untreated industrial effluents are synthetic organic compounds especially 2,4,6-trichlorophenol (TCP) which cause several environmental issues and heath related problems in humans. To cope with this problem, an excellent 2D porous material based on p-DMAC4/GO composite has been synthesized as adsorbent material for the effective removal of 2,4,6-trichlorophenol pollutant from wastewater. In this regard, the advanced analytical tools such as Fourier-Transform infrared (FT-IR), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy-Dispersive X-ray spectroscopy (EDS) were used for its characterization. The results justified the chemical composition, excellent crystalline nature, surface morphology and elemental composition of the synthesized composite material. The synthesized adsorbent material showed 95% adsorption of TCP from wastewater system at optimal conditions i.e., pH (6), adsorbent dosage (30 mg) and shaking time (60 min). The mathematical models such as isotherms, thermodynamics and kinetics studies validate the nature of adsorption process of TCP pollutant. The adsorption data found to be best fitted with Langmuir isotherms (R2 = 0.99); whereas kinetic study suggested the pseudo-second-order nature of reaction with R2 = 0.99. The thermodynamics study confirmed the spontaneous and endothermic nature of the TCP pollutant onto the surface of p-DMAC4/GO material. Moreover, the results of current work were also compared with existing reported adsorbents and data suggested the higher efficiency, feasibility, and reusability of p-DMAC4/GO material to remove the TCP pollutant from the wastewater system.
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Affiliation(s)
- Ali Hyder
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan
| | - Muzamil Thebo
- Dr. M. A. Kazi Institute of Chemistry, University of Sindh, Jamshoro, 76080, Pakistan
| | - Dahar Janwery
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan
| | - Jamil Ahmed Buledi
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan
| | - Imamdin Chandio
- Department of Chemistry Tsinghua University, Beijing, 100084, China
| | - Awais Khalid
- Department of Physics, Hazara University Mansehra, Mansehra, Khyber Pakhtunkhwa, 21300, Pakistan
| | - Bader S. Al-Anzi
- Department of Environment Technologies and Management, Kuwait University, P.O. Box 5969, Safat, 13060, Kuwait
| | - Hanadi A. Almukhlifi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk, 71491, Saudi Arabia
| | - Khalid Hussain Thebo
- Institute of Metal Research (IMR), Chinese Academy of Science, 2 Wenhua Rood, Shenyang, China
| | - Fakhar N. Memon
- Department of Chemistry, University of Karachi, Sindh, Pakistan
| | - Ayaz Ali Memon
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan
| | - Amber Rehana Solangi
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan
| | - Shahabuddin Memon
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan
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7
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Gulati K, Chopra D, Kocak-Oztug NA, Verron E. Fit and forget: The future of dental implant therapy via nanotechnology. Adv Drug Deliv Rev 2023; 199:114900. [PMID: 37263543 DOI: 10.1016/j.addr.2023.114900] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/11/2023] [Accepted: 05/21/2023] [Indexed: 06/03/2023]
Abstract
Unlike orthopedic implants, dental implants require the orchestration of both osseointegration at the bone-implant interface and soft-tissue integration at the transmucosal region in a complex oral micro-environment with ubiquitous pathogenic bacteria. This represents a very challenging environment for early acceptance and long-term survival of dental implants, especially in compromised patient conditions, including aged, smoking and diabetic patients. Enabling advanced local therapy from the surface of titanium-based dental implants via novel nano-engineering strategies is emerging. This includes anodized nano-engineered implants eluting growth factors, antibiotics, therapeutic nanoparticles and biopolymers to achieve maximum localized therapeutic action. An important criterion is balancing bioactivity enhancement and therapy (like bactericidal efficacy) without causing cytotoxicity. Critical research gaps still need to be addressed to enable the clinical translation of these therapeutic dental implants. This review informs the latest developments, challenges and future directions in this domain to enable the successful fabrication of clinically-translatable therapeutic dental implants that would allow for long-term success, even in compromised patient conditions.
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Affiliation(s)
- Karan Gulati
- The University of Queensland, School of Dentistry, Herston, QLD 4006, Australia.
| | - Divya Chopra
- The University of Queensland, School of Dentistry, Herston, QLD 4006, Australia
| | - Necla Asli Kocak-Oztug
- The University of Queensland, School of Dentistry, Herston, QLD 4006, Australia; Istanbul University, Faculty of Dentistry, Department of Periodontology, 34116 Istanbul, Turkey
| | - Elise Verron
- Nantes Université, CNRS, CEISAM, UMR 6230, 44000 Nantes, France
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8
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Lu Z, Lv W, Liu H, Liu Y, Liao S, Wang X, Zhu K. ProBox: A Rigid yet Dynamic Cyclophane Capable of Adaptive and Redox-Switchable Host-Guest Binding. Org Lett 2023; 25:3508-3511. [PMID: 37154438 DOI: 10.1021/acs.orglett.3c01092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
A pyrrolodithiin-derived box-like cyclophane (ProBox), featuring an adaptive geometry with stimuli-responsiveness, was designed and successfully constructed. The dynamic and foldable dithiin subunit endowed the cyclophane with a compressible cavity which can transform from a hex-nut geometry to a nearly rectangular box upon complexing guests with various sizes and shapes. The resulting pseudorotaxane complexes could be dethreaded via electrochemical oxidation. Such an adaptive cavity along with redox-switchable host-guest binding of ProBox could enable further applications in complex molecular switches and machines.
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Affiliation(s)
- Zonghuan Lu
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Wanqian Lv
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Hongyi Liu
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Yandie Liu
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Shuhua Liao
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xijie Wang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Kelong Zhu
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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9
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Enhanced Corrosion Resistance and Local Therapy from Nano-Engineered Titanium Dental Implants. Pharmaceutics 2023; 15:pharmaceutics15020315. [PMID: 36839638 PMCID: PMC9963924 DOI: 10.3390/pharmaceutics15020315] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/12/2023] [Accepted: 01/12/2023] [Indexed: 01/19/2023] Open
Abstract
Titanium is the ideal material for fabricating dental implants with favorable biocompatibility and biomechanics. However, the chemical corrosions arising from interaction with the surrounding tissues and fluids in oral cavity can challenge the integrity of Ti implants and leach Ti ions/nanoparticles, thereby causing cytotoxicity. Various nanoscale surface modifications have been performed to augment the chemical and electrochemical stability of Ti-based dental implants, and this review discusses and details these advances. For instance, depositing nanowires/nanoparticles via alkali-heat treatment and plasma spraying results in the fabrication of a nanostructured layer to reduce chemical corrosion. Further, refining the grain size to nanoscale could enhance Ti implants' mechanical and chemical stability by alleviating the internal strain and establishing a uniform TiO2 layer. More recently, electrochemical anodization (EA) has emerged as a promising method to fabricate controlled TiO2 nanostructures on Ti dental implants. These anodized implants enhance Ti implants' corrosion resistance and bioactivity. A particular focus of this review is to highlight critical advances in anodized Ti implants with nanotubes/nanopores for local drug delivery of potent therapeutics to augment osseo- and soft-tissue integration. This review aims to improve the understanding of novel nano-engineered Ti dental implant modifications, focusing on anodized nanostructures to fabricate the next generation of therapeutic and corrosion-resistant dental implants. The review explores the latest developments, clinical translation challenges, and future directions to assist in developing the next generation of dental implants that will survive long-term in the complex corrosive oral microenvironment.
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Naghaviyan A, Hashemi-Moghaddam H, Zavareh S, Ebrahimi Verkiani M, Meuller A. Synergistic Effect Evaluation of Magnetotherapy and a Cationic-Magnetic Nanocomposite Loaded with Doxorubicin for Targeted Drug Delivery to Breast Adenocarcinoma. Mol Pharm 2023; 20:101-117. [PMID: 36475680 DOI: 10.1021/acs.molpharmaceut.2c00505] [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: 12/12/2022]
Abstract
This work investigates the synergistic effect of magnetotherapy and a novel cationic-magnetic drug delivery system on inhibiting breast cancer cell growth and other tissues. First, super-paramagnetic magnetite (Fe3O4) nanoparticles were coated with doxorubicin-imprinted poly(methacrylic acid-co-diallyl dimethylammonium chloride) [Fe3O4/poly(MAA-DDA)]. The cationic-magnetic nanocomposite (CMC) was characterized using XRD, FT-IR, VSM, TGA, TEM, FESEM, EDS, DLS, and BET. In vitro analyses, including drug release kinetics, cytotoxicity, and hemolytic assays, confirmed this novel CMC's good drug release profile and biocompatibility. Finally, in vivo experiments on BALB/c mice were designed to evaluate the synergistic effect of magnetotherapy on targeted drug delivery using the CMC. In vivo fluorescence imaging evaluated the drug distribution in different tissues of mice. Tumor volume evaluation demonstrated the efficiency of the CMC and magnetotherapy in preventing tumor growth; the two techniques significantly reduced tumor volume. Histopathological analysis proved that applying magnetotherapy in conjunction with the cationic-magnetic drug delivery system significantly prevented tumor cell proliferation and increased apoptosis with limited impact on other tissues. Also, Dox and Fe concentrations in different tissues confirmed the efficient drug delivery to tumor cells.
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Affiliation(s)
- Alireza Naghaviyan
- Department of Pharmacy, Damghan Branch, Islamic Azad University, 3671637849Damghan, Iran
| | | | - Saeed Zavareh
- School of Biology, Damghan University, 3671641167Damghan, Iran
| | | | - Anja Meuller
- Department of Chemistry and Biochemistry, Central Michigan University, Mount Pleasant, Michigan48859, United States
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