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Rubčić M, Herak M, Zagorec L, Domazet Jurašin D. Transition Metal-Based Dimeric Metallosurfactants: From Organic-Inorganic Hybrid Structures and Low-Dimensional Magnets to Metallomicelles. Inorg Chem 2024; 63:12218-12230. [PMID: 38885971 DOI: 10.1021/acs.inorgchem.4c01550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
The dimeric (gemini) as well as metallosurfactants exhibit enhanced physicochemical properties compared with conventional surfactants. By uniting the benefits of both, a series of novel dimeric metallosurfactants of the type (12-2-12)[MBr4] (M = Co, Ni, Cu and Zn) was successfully prepared by the reaction of the dimeric surfactant bis(N,N-dimethyl-N-dodecyl)ethylene-1,2-diammonium dibromide, 12-2-12, and the MBr2 salt. Structures and magnetic properties of the materials were studied comprehensively in the solid state, while their micellization was explored in solution. The obtained results unveil that the incorporation and the choice of transition metal more significantly influence surfactants' structures ((12-2-12)2+ cations adopt V-, U-, or trans-conformations) and the magnetic features (metal ions form 1D or 2D magnetic lattice) than their solution properties. However, all synthesized metallosurfactants display improved self-assembly properties compared with the metal-free precursor. The investigated systems represent a fruitful platform for the development of multifunctional materials as they are simple to produce, can be obtained in high yields, and show advanced properties both in solution and in the solid state. Notably, this work unveils a simple approach to the design and synthesis of novel low-dimensional magnetic systems of great potential for future spintronic and optoelectronic devices.
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Affiliation(s)
- Mirta Rubčić
- Faculty of Science, Department of Chemistry, University of Zagreb, Horvatovac 102a ,Zagreb HR-10000, Croatia
| | - Mirta Herak
- Department for Research of Materials Under Extreme Conditions, Institute of Physics, Bijenička cesta 46 ,Zagreb HR-10000, Croatia
| | - Leona Zagorec
- Faculty of Chemical Engineering and Technology, University of Zagreb, Trg Marka Marulića 19 ,Zagreb HR-10000, Croatia
| | - Darija Domazet Jurašin
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička 54 ,Zagreb HR-10000, Croatia
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2
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Singh G, Rana A, Smriti. Decoding antimicrobial resistance: unraveling molecular mechanisms and targeted strategies. Arch Microbiol 2024; 206:280. [PMID: 38805035 DOI: 10.1007/s00203-024-03998-2] [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: 03/31/2024] [Revised: 05/07/2024] [Accepted: 05/08/2024] [Indexed: 05/29/2024]
Abstract
Antimicrobial resistance poses a significant global health threat, necessitating innovative approaches for combatting it. This review explores various mechanisms of antimicrobial resistance observed in various strains of bacteria. We examine various strategies, including antimicrobial peptides (AMPs), novel antimicrobial materials, drug delivery systems, vaccines, antibody therapies, and non-traditional antibiotic treatments. Through a comprehensive literature review, the efficacy and challenges of these strategies are evaluated. Findings reveal the potential of AMPs in combating resistance due to their unique mechanisms and lower propensity for resistance development. Additionally, novel drug delivery systems, such as nanoparticles, show promise in enhancing antibiotic efficacy and overcoming resistance mechanisms. Vaccines and antibody therapies offer preventive measures, although challenges exist in their development. Non-traditional antibiotic treatments, including CRISPR-Cas systems, present alternative approaches to combat resistance. Overall, this review underscores the importance of multifaceted strategies and coordinated global efforts to address antimicrobial resistance effectively.
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Affiliation(s)
- Gagandeep Singh
- Department of Biosciences (UIBT), Chandigarh University, Punjab, 140413, India
| | - Anita Rana
- Department of Biosciences (UIBT), Chandigarh University, Punjab, 140413, India.
| | - Smriti
- Department of Biosciences (UIBT), Chandigarh University, Punjab, 140413, India
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3
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Kumari S, Nehra M, Jain S, Dilbaghi N, Chaudhary GR, Kim KH, Kumar S. Metallosurfactant aggregates: Structures, properties, and potentials for multifarious applications. Adv Colloid Interface Sci 2024; 323:103065. [PMID: 38091690 DOI: 10.1016/j.cis.2023.103065] [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: 11/01/2023] [Revised: 11/30/2023] [Accepted: 12/01/2023] [Indexed: 01/13/2024]
Abstract
Metallosurfactants offer important scientific and technological advances due to their novel interfacial properties. As a special class of structures formed by the integration of metal ions into amphiphilic surfactant molecules, these metal-based amphiphilic molecules possess both organometallic and surface chemistries. This review critically examines the structural transitions of metallosurfactants from micelle to vesicle upon metal coordination. The properties of a metallosurfactant can be changed by tuning the coordination between the metal ions and surfactants. The self-assembled behavior of surfactants can be controlled by selecting transition-metal ions that enhance their catalytic efficiency in environmental applications by applying a hydrogen evolution reaction or oxygen evolution reaction. We present the different scattering techniques available to examine the properties of metallosurfactants (e.g., size, shape, structure, and aggregation behavior). The utility of metallosurfactants in catalysis, the synthesis of nanoparticles, and biomedical applications (involving diagnostics and therapeutics) is also explored.
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Affiliation(s)
- Sonam Kumari
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University Chandigarh, 160014, India; Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, 125001, India
| | - Monika Nehra
- Department of Mechanical Engineering, University Institute of Engineering and Technology, Panjab University, Chandigarh 160014, India
| | - Shikha Jain
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, 125001, India
| | - Neeraj Dilbaghi
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, 125001, India
| | - Ganga Ram Chaudhary
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University Chandigarh, 160014, India
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
| | - Sandeep Kumar
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, 125001, India; Physics Department, Punjab Engineering College (Deemed to be University), Chandigarh 160012, India.
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4
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Shang J, Zhou C, Jiang C, Huang X, Liu Z, Zhang H, Zhao J, Liang W, Zeng B. Recent developments in nanomaterials for upgrading treatment of orthopedics diseases. Front Bioeng Biotechnol 2023; 11:1221365. [PMID: 37621999 PMCID: PMC10446844 DOI: 10.3389/fbioe.2023.1221365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/11/2023] [Indexed: 08/26/2023] Open
Abstract
Nanotechnology has changed science in the last three decades. Recent applications of nanotechnology in the disciplines of medicine and biology have enhanced medical diagnostics, manufacturing, and drug delivery. The latest studies have demonstrated this modern technology's potential for developing novel methods of disease detection and treatment, particularly in orthopedics. According to recent developments in bone tissue engineering, implantable substances, diagnostics and treatment, and surface adhesives, nanomedicine has revolutionized orthopedics. Numerous nanomaterials with distinctive chemical, physical, and biological properties have been engineered to generate innovative medication delivery methods for the local, sustained, and targeted delivery of drugs with enhanced therapeutic efficacy and minimal or no toxicity, indicating a very promising strategy for effectively controlling illnesses. Extensive study has been carried out on the applications of nanotechnology, particularly in orthopedics. Nanotechnology can revolutionize orthopedics cure, diagnosis, and research. Drug delivery precision employing nanotechnology using gold and liposome nanoparticles has shown especially encouraging results. Moreover, the delivery of drugs and biologics for osteosarcoma is actively investigated. Different kind of biosensors and nanoparticles has been used in the diagnosis of bone disorders, for example, renal osteodystrophy, Paget's disease, and osteoporosis. The major hurdles to the commercialization of nanotechnology-based composite are eventually examined, thus helping in eliminating the limits in connection to some pre-existing biomaterials for orthopedics, important variables like implant life, quality, cure cost, and pain and relief from pain. The potential for nanotechnology in orthopedics is tremendous, and most of it looks to remain unexplored, but not without challenges. This review aims to highlight the up tp date developments in nanotechnology for boosting the treatment modalities for orthopedic ailments. Moreover, we also highlighted unmet requirements and present barriers to the practical adoption of biomimetic nanotechnology-based orthopedic treatments.
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Affiliation(s)
- Jinxiang Shang
- Department of Orthopedics, Affiliated Hospital of Shaoxing University, Shaoxing, China
| | - Chao Zhou
- Department of Orthopedics, Zhoushan Guanghua Hospital, Zhoushan, China
| | - Chanyi Jiang
- Department of Pharmacy, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Xiaogang Huang
- Department of Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Zunyong Liu
- Department of Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Hengjian Zhang
- Department of Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Jiayi Zhao
- Department of Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Wenqing Liang
- Department of Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Bin Zeng
- Department of Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
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5
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Metal nanoparticles against multi-drug-resistance bacteria. J Inorg Biochem 2022; 237:111938. [PMID: 36122430 DOI: 10.1016/j.jinorgbio.2022.111938] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/21/2022] [Accepted: 07/18/2022] [Indexed: 01/18/2023]
Abstract
Antimicrobial-resistant (AMR) bacterial infections remain a significant public health concern. The situation is exacerbated by the rapid development of bacterial resistance to currently available antimicrobials. Metal nanoparticles represent a new perspective in treating AMR due to their unique mechanisms, such as disrupting bacterial cell membrane potential and integrity, biofilm inhibition, reactive oxygen species (ROS) formation, enhancing host immune responses, and inhibiting RNA and protein synthesis by inducing intracellular processes. Metal nanoparticles (MNPs) properties such as size, shape, surface functionalization, surface charges, and co-encapsulated drug delivery capability all play a role in determining their potential against multidrug-resistant bacterial infections. Silver, gold, zinc oxide, selenium, copper, cobalt, and iron oxide nanoparticles have recently been studied extensively against multidrug-resistant bacterial infections. This review aims to provide insight into the size, shape, surface properties, and co-encapsulation of various MNPs in managing multidrug-resistant bacterial infections.
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Interfacial engineering by using Mo based single chain metallosurfactant towards hydrogen evolution reaction. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Chen MQ. Recent Advances and Perspective of Nanotechnology-Based Implants for Orthopedic Applications. Front Bioeng Biotechnol 2022; 10:878257. [PMID: 35547165 PMCID: PMC9082310 DOI: 10.3389/fbioe.2022.878257] [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: 02/17/2022] [Accepted: 04/01/2022] [Indexed: 11/13/2022] Open
Abstract
Bioimplant engineering strives to provide biological replacements for regenerating, retaining, or modifying injured tissues and/or organ function. Modern advanced material technology breakthroughs have aided in diversifying ingredients used in orthopaedic implant applications. As such, nanoparticles may mimic the surface features of real tissues, particularly in terms of wettability, topography, chemistry, and energy. Additionally, the new features of nanoparticles support their usage in enhancing the development of various tissues. The current study establishes the groundwork for nanotechnology-driven biomaterials by elucidating key design issues that affect the success or failure of an orthopaedic implant, its antibacterial/antimicrobial activity, response to cell attachment propagation, and differentiation. The possible use of nanoparticles (in the form of nanosized surface or a usable nanocoating applied to the implant’s surface) can solve a number of problems (i.e., bacterial adhesion and corrosion resilience) associated with conventional metallic or non-metallic implants, particularly when implant techniques are optimised. Orthopaedic biomaterials’ prospects (i.e., pores architectures, 3D implants, and smart biomaterials) are intriguing in achieving desired implant characteristics and structure exhibiting stimuli-responsive attitude. The primary barriers to commercialization of nanotechnology-based composites are ultimately discussed, therefore assisting in overcoming the constraints in relation to certain pre-existing orthopaedic biomaterials, critical factors such as quality, implant life, treatment cost, and pain alleviation.
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Affiliation(s)
- Ming-Qi Chen
- Traumatic Orthopedics Yantai Mountain Hospital, Yantai, China
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Anele A, Obare S, Wei J. Recent Trends and Advances of Co 3O 4 Nanoparticles in Environmental Remediation of Bacteria in Wastewater. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1129. [PMID: 35407254 PMCID: PMC9000771 DOI: 10.3390/nano12071129] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/22/2022] [Accepted: 03/24/2022] [Indexed: 02/04/2023]
Abstract
Antibiotic resistance is a formidable global threat. Wastewater is a contributing factor to the prevalence of antibiotic-resistant bacteria and genes in the environment. There is increased interest evident from research trends in exploring nanoparticles for the remediation of antibiotic-resistant bacteria. Cobalt oxide (Co3O4) nanoparticles have various technological, biomedical, and environmental applications. Beyond the environmental remediation applications of degradation or adsorption of dyes and organic pollutants, there is emerging research interest in the environmental remediation potential of Co3O4 nanoparticles and its nanocomposites on antibiotic-resistant and/or pathogenic bacteria. This review focuses on the recent trends and advances in remediation using Co3O4 nanoparticles and its nanocomposites on antibiotic-resistant or pathogenic bacteria from wastewater. Additionally, challenges and future directions that need to be addressed are discussed.
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Affiliation(s)
- Anuoluwapo Anele
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, NC 27401, USA;
| | - Sherine Obare
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, NC 27401, USA;
- Department of Nanoengineering, Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, Greensboro, NC 27401, USA
| | - Jianjun Wei
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, NC 27401, USA;
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9
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Subramanian H, Krishnan M, Mahalingam A. Photocatalytic dye degradation and photoexcited anti-microbial activities of green zinc oxide nanoparticles synthesized via Sargassum muticum extracts. RSC Adv 2022; 12:985-997. [PMID: 35425145 PMCID: PMC8978881 DOI: 10.1039/d1ra08196a] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 12/14/2021] [Indexed: 11/21/2022] Open
Abstract
Drug-resistant superbugs (DRS) were isolated from hospital sewage waste and confirmed by a 16S rDNA molecular technique as B. filamentosus, B. flexus, P. stutzeri, and A. baumannii.
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Affiliation(s)
- Harinee Subramanian
- Department of Physics, National Institute of Technology (NIT), Tiruchirappalli – 620 015, Tamil Nadu, India
| | - Muthukumar Krishnan
- Department of Physics, National Institute of Technology (NIT), Tiruchirappalli – 620 015, Tamil Nadu, India
| | - Ashok Mahalingam
- Department of Physics, National Institute of Technology (NIT), Tiruchirappalli – 620 015, Tamil Nadu, India
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Liaqat I, Ali R, Hanif U, Latif A, Bibi A, Saleem S, Naseem S, Ulfat M, Mubin M, Rashid F. Antimicrobial Efficacy of Biogenic Cobalt and Copper Nanoparticles against Pathogenic Isolates. J Oleo Sci 2022; 71:1669-1677. [PMID: 36310054 DOI: 10.5650/jos.ess22197] [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: 06/16/2023] Open
Abstract
Biogenic synthesis of cobalt (Co) and copper (Cu) nanoparticles (NPs) was performed using the bacterial strains Escherichia coli and Bacillus subtilis. Prepared NPs were confirmed by a color change to maroon for CoNPs and green for CuNPs. The NPs characterization using FTIR showed the presence of functional groups, i.e., phenols, acids, protein, and aromatics present in the Co and CuNPs. UV-vis spectroscopy of E. coli and B. subtilis CuNPs showed peaks at 550 and 625 nm, respectively. For E. coli and B. subtilis CoNPs, peaks were observed at 300 nm and 350 nm, respectively. Antibacterial and antifungal activity of B. subtilis and E. coli Co and CuNPs was determined at 100 mg/mL concentration against two bacterial strains at 5, 2.5, and 1.5 mg/mL against fungal two strains F. oxysporum and T. viridi, respectively. B. subtilis CuNPs showed significantly higher inhibition zones (ZOI=25.7-29.7 mm) against E. coli and B. subtilis compared to other biogenic NPs. Likewise, B. Subtilis CuNPs showed lower MIC (4.3 ± 6.3) and MBC (5.3 mg/mL) values against both tested isolates. Antifungal activity of B. subtilis and E. coli CuNPs and CoNPs showed a concentration-dependent decrease in ZOI. Among all biogenic NPs, B. subtilis CoNPs showed the highest ZOI (25-30 mm) against F. oxysporum followed by E. coli CuNPs with maximum ZOI (20-27 mm) against T. viridi. Again, B. subtilis CoNPs and E. coli CuNPs showed lowest MIC and MFC values against both fungal isolates. In conclusion, the current study showed that biogenically synthesized B. subtilis Cu or CoNPs can be used as effective antimicrobial agents due to their potential antibacterial and antifungal potential.
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Affiliation(s)
- Iram Liaqat
- Microbiology Lab, Department of Zoology, Government College University
| | - Rabbia Ali
- Microbiology Lab, Department of Zoology, Government College University
| | - Uzma Hanif
- Department of Botany, Government College University
| | - Asma Latif
- Department of Zoology, Lahore College for Women University
| | - Asia Bibi
- Department of Zoology, The Women University
| | | | - Sajida Naseem
- Department of Zoology, Division of Science and Technology, University of Education
| | - Mobina Ulfat
- Department of Botany, Lahore College for Women University
| | - Muhammad Mubin
- Centre of Agricultural Biochemistry and Biotechnology, University of Agriculture
| | - Farzana Rashid
- Department of Zoology, Lahore College for Women University
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11
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Poyraz S, Belveren S, Aydınoğlu S, Ulger M, de Cózar A, de Gracia Retamosa M, Sansano JM, Döndaş HA. Biological properties and conformational studies of amphiphilic Pd(II) and Ni(II) complexes bearing functionalized aroylaminocarbo- N-thioylpyrrolinate units. Beilstein J Org Chem 2021; 17:2812-2821. [PMID: 34925620 PMCID: PMC8649204 DOI: 10.3762/bjoc.17.192] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/24/2021] [Indexed: 12/05/2022] Open
Abstract
A series of novel palladium(II) and nickel(II) complexes of multifunctionalized aroylaminocarbo-N-thioylpyrrolinates were synthesized and characterized by analytical and spectroscopic techniques. The biological properties of the freshly prepared compounds were screened against S. aureus, B. subtilis, A. hydrophila, E. coli, and A. baumannii bacteria and antituberculosis activity against M. tuberculosis H37Rv strains. Also, the antifungal activity was studied against C. albicans, C. tropicalis, and C. glabrata standard strains. A deep conformational survey was monitored using DFT calculations with the aim to explain the importance of the final conformation in the biological experimental results.
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Affiliation(s)
- Samet Poyraz
- Department of Chemistry, Faculty of Pharmacy, Mersin University, Yenisehir, 33169 Mersin, Turkey
| | - Samet Belveren
- Department of Chemistry, Faculty of Pharmacy, Mersin University, Yenisehir, 33169 Mersin, Turkey
| | - Sabriye Aydınoğlu
- Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Çukurova University, Balcalı 01330, Adana, Turkey
| | - Mahmut Ulger
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Mersin University, Yenisehir, 33169 Mersin, Turkey
| | - Abel de Cózar
- Departamento de Química Orgánica I, Facultad de Química. Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, Centro de Innovación en Química Avanzada (ORFEO-CINQA) and Donostia International Physics Center (DIPC), P. K. 1072, E-20018 San Sebastián, Spain.,IKERBASQUE, Basque Foundation of Science, Plaza Euskadi 5, 48009, Bilbao, Spain
| | - Maria de Gracia Retamosa
- University of Alicante, Department of Organic Chemistry, Centro de Innovación en Química Avanzada (ORFEO-CINQA) and Instituto de Síntesis Orgánica (ISO), PO Box 99, 03080 Alicante, Spain
| | - Jose M Sansano
- University of Alicante, Department of Organic Chemistry, Centro de Innovación en Química Avanzada (ORFEO-CINQA) and Instituto de Síntesis Orgánica (ISO), PO Box 99, 03080 Alicante, Spain
| | - H Ali Döndaş
- Department of Chemistry, Faculty of Pharmacy, Mersin University, Yenisehir, 33169 Mersin, Turkey.,Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Çukurova University, Balcalı 01330, Adana, Turkey
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Antimicrobial Resistance and Inorganic Nanoparticles. Int J Mol Sci 2021; 22:ijms222312890. [PMID: 34884695 PMCID: PMC8657868 DOI: 10.3390/ijms222312890] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/16/2021] [Accepted: 11/17/2021] [Indexed: 01/10/2023] Open
Abstract
Antibiotics are being less effective, which leads to high mortality in patients with infections and a high cost for the recovery of health, and the projections that are had for the future are not very encouraging which has led to consider antimicrobial resistance as a global health problem and to be the object of study by researchers. Although resistance to antibiotics occurs naturally, its appearance and spread have been increasing rapidly due to the inappropriate use of antibiotics in recent decades. A bacterium becomes resistant due to the transfer of genes encoding antibiotic resistance. Bacteria constantly mutate; therefore, their defense mechanisms mutate, as well. Nanotechnology plays a key role in antimicrobial resistance due to materials modified at the nanometer scale, allowing large numbers of molecules to assemble to have a dynamic interface. These nanomaterials act as carriers, and their design is mainly focused on introducing the temporal and spatial release of the payload of antibiotics. In addition, they generate new antimicrobial modalities for the bacteria, which are not capable of protecting themselves. So, nanoparticles are an adjunct mechanism to improve drug potency by reducing overall antibiotic exposure. These nanostructures can overcome cell barriers and deliver antibiotics to the cytoplasm to inhibit bacteria. This work aims to give a general vision between the antibiotics, the nanoparticles used as carriers, bacteria resistance, and the possible mechanisms that occur between them.
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Huang H, Wang J, Zhang J, Cai J, Pi J, Xu JF. Inspirations of Cobalt Oxide Nanoparticle Based Anticancer Therapeutics. Pharmaceutics 2021; 13:pharmaceutics13101599. [PMID: 34683892 PMCID: PMC8538820 DOI: 10.3390/pharmaceutics13101599] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/05/2021] [Accepted: 09/24/2021] [Indexed: 01/18/2023] Open
Abstract
Cobalt is essential to the metabolism of all animals due to its key role in cobalamin, also known as vitamin B12, the primary biological reservoir of cobalt as an ultra-trace element. Current cancer treatment strategies, including chemotherapy and radiotherapy, have been seriously restricted by their side effects and low efficiency for a long time, which urges us to develop new technologies for more effective and much safer anticancer therapies. Novel nanotechnologies, based on different kinds of functional nanomaterials, have been proved to act as effective and promising strategies for anticancer treatment. Based on the important biological roles of cobalt, cobalt oxide nanoparticles (NPs) have been widely developed for their attractive biomedical applications, especially their potential for anticancer treatments due to their selective inhibition of cancer cells. Thus, more and more attention has been attracted to the preparation, characterization and anticancer investigation of cobalt oxide nanoparticles in recent years, which is expected to introduce novel anticancer treatment strategies. In this review, we summarize the synthesis methods of cobalt oxide nanoparticles to discuss the advantages and restrictions for their preparation. Moreover, we emphatically discuss the anticancer functions of cobalt oxide nanoparticles as well as their underlying mechanisms to promote the development of cobalt oxide nanoparticles for anticancer treatments, which might finally benefit the current anticancer therapeutics based on functional cobalt oxide nanoparticles.
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Affiliation(s)
- Huanshao Huang
- Department of Clinical Immunology, Institute of Laboratory Medicine, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, School of Medical Technology, Guangdong Medical University, Dongguan 523808, China; (H.H.); (J.W.); (J.Z.)
| | - Jiajun Wang
- Department of Clinical Immunology, Institute of Laboratory Medicine, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, School of Medical Technology, Guangdong Medical University, Dongguan 523808, China; (H.H.); (J.W.); (J.Z.)
| | - Junai Zhang
- Department of Clinical Immunology, Institute of Laboratory Medicine, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, School of Medical Technology, Guangdong Medical University, Dongguan 523808, China; (H.H.); (J.W.); (J.Z.)
| | - Jiye Cai
- Department of Chemistry, Jinan University, Guangzhou 510632, China;
| | - Jiang Pi
- Department of Clinical Immunology, Institute of Laboratory Medicine, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, School of Medical Technology, Guangdong Medical University, Dongguan 523808, China; (H.H.); (J.W.); (J.Z.)
- Correspondence: (J.P.); (J.-F.X.)
| | - Jun-Fa Xu
- Department of Clinical Immunology, Institute of Laboratory Medicine, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, School of Medical Technology, Guangdong Medical University, Dongguan 523808, China; (H.H.); (J.W.); (J.Z.)
- Correspondence: (J.P.); (J.-F.X.)
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14
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Hazer Rosberg DB, Hazer B, Stenberg L, Dahlin LB. Gold and Cobalt Oxide Nanoparticles Modified Poly-Propylene Poly-Ethylene Glycol Membranes in Poly (ε-Caprolactone) Conduits Enhance Nerve Regeneration in the Sciatic Nerve of Healthy Rats. Int J Mol Sci 2021; 22:7146. [PMID: 34281198 PMCID: PMC8268459 DOI: 10.3390/ijms22137146] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/21/2021] [Accepted: 06/23/2021] [Indexed: 12/15/2022] Open
Abstract
Reconstruction of nerve defects is a clinical challenge. Autologous nerve grafts as the gold standard treatment may result in an incomplete restoration of extremity function. Biosynthetic nerve conduits are studied widely, but still have limitations. Here, we reconstructed a 10 mm sciatic nerve defect in healthy rats and analyzed nerve regeneration in poly (ε-caprolactone) (PCL) conduits longitudinally divided by gold (Au) and gold-cobalt oxide (AuCoO) nanoparticles embedded in poly-propylene poly-ethylene glycol (PPEG) membranes (AuPPEG or AuCoOPPEG) and compared it with unmodified PPEG-membrane and hollow PCL conduits. After 21 days, we detected significantly better axonal outgrowth, together with higher numbers of activated Schwann cells (ATF3-labelled) and higher HSP27 expression, in reconstructed sciatic nerve and in corresponding dorsal root ganglia (DRG) in the AuPPEG and AuCoOPPEG groups; whereas the number of apoptotic Schwann cells (cleaved caspase 3-labelled) was significantly lower. Furthermore, numbers of activated and apoptotic Schwann cells in the regenerative matrix correlated with axonal outgrowth, whereas HSP27 expression in the regenerative matrix and in DRGs did not show any correlation with axonal outgrowth. We conclude that gold and cobalt-oxide nanoparticle modified membranes in conduits improve axonal outgrowth and increase the regenerative performance of conduits after nerve reconstruction.
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Affiliation(s)
- Derya Burcu Hazer Rosberg
- Department of Hand Surgery, Skåne University Hospital, 205 02 Malmö, Sweden; (L.S.); (L.B.D.)
- Department of Translational Medicine—Hand Surgery, Lund University, 205 02 Malmö, Sweden
- Department of Neurosurgery, Mugla Sitki Kocman University, Mugla 48100, Turkey
| | - Baki Hazer
- Department of Aircraft Airflame Engine Maintenance, Kapadokya University, Ürgüp 50420, Turkey;
- Department of Chemistry, Zonguldak Bülent Ecevit University, Zonguldak 67100, Turkey
| | - Lena Stenberg
- Department of Hand Surgery, Skåne University Hospital, 205 02 Malmö, Sweden; (L.S.); (L.B.D.)
- Department of Translational Medicine—Hand Surgery, Lund University, 205 02 Malmö, Sweden
| | - Lars B. Dahlin
- Department of Hand Surgery, Skåne University Hospital, 205 02 Malmö, Sweden; (L.S.); (L.B.D.)
- Department of Translational Medicine—Hand Surgery, Lund University, 205 02 Malmö, Sweden
- Department of Biomedical and Clinical Sciences, Linköping University, 581 83 Linköping, Sweden
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15
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Dogra V, Kaur G, Kumar R, Kumar S. Toxicity profiling of metallosurfactant based ruthenium and ruthenium oxide nanoparticles towards the eukaryotic model organism Saccharomyces cerevisiae. CHEMOSPHERE 2021; 270:128650. [PMID: 33131730 DOI: 10.1016/j.chemosphere.2020.128650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 10/12/2020] [Accepted: 10/15/2020] [Indexed: 06/11/2023]
Abstract
In the present study, a facile method was used to synthesize the ruthenium and ruthenium oxide (RuO2) nanoparticles (NPs) derived from three different metallosurfactants. Firstly, three metallosurfactants were fabricated i.e. RuCTAC (Bishexadecyltrimethylammonium ruthenium tetrachloride), RuDDA (Bisdodecylamine ruthenium dichloride), and RuHEXA (Bishexadecylamine ruthenium dichloride) and characterized by CHN, FTIR, and 1HNMR. These metallosurfactants were further utilized to fabricate the mixed type of NPs (Ru and RuO2 NPs) using the biocompatible microemulsion technique and NPs were then characterized. Subsequently, the nanotoxicity of mixed NPs (Ru & RuO2) was studied towards Saccharomyces cerevisiae. The detailed study of nanotoxicity against the S. cerevisiae cells was done by employing optical microscopy, FESEM, anti-yeast activity assay, circular dichroism, and gel electrophoresis techniques. FESEM and optical microscopy analyses indicated that RuCTAC nanosuspension (Ns) has the most toxic effect on the S. cerevisiae cells. FESEM analysis confirmed the harmful impact of Ru and RuO2 NPs on the S. cerevisiae cells. From the FESEM analysis, complete alteration in the morphology, cell membrane breakage, and formation of the holes on the cell wall of S. cerevisiae was affirmed in presence of all three types of Ns i.e. RuCTAC, RuDDA, and RuHEXA Ns. Genotoxicity of the NPs was confirmed by circular dichroism and gel electrophoresis and it was found that RuCTAC and RuHEXA Ns have the most damaging influence on the yeast genomic DNA.
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Affiliation(s)
- Varsha Dogra
- Department of Environment Studies, Panjab University, Chandigarh, India
| | - Gurpreet Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India.
| | - Rajeev Kumar
- Department of Environment Studies, Panjab University, Chandigarh, India
| | - Sandeep Kumar
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science & Technology, Hisar, 125 001, Haryana, India
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16
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Metallo-Liposomes Derived from the [Ru(bpy)3]2+ Complex as Nanocarriers of Therapeutic Agents. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9050090] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The obtaining of nanocarriers of gene material and small drugs is still an interesting research line. Side-effects produced by the toxicity of several pharmaceutics, the high concentrations needed to get therapeutic effects, or their excessive use by patients have motivated the search for new nanostructures. For these reasons, cationic metallo-liposomes composed by phosphatidylcholine (PC), cholesterol (CHO) and RuC1C19 (a surfactant derived from the metallic complex [Ru(bpy)3]2+) were prepared and characterized by using diverse techniques (zeta potential, dynamic light scattering and electronic transmission microscopy –TEM-). Unimodal or bimodal populations of spherical aggregates with small sizes were obtained depending on the composition of the liposomes. The presence of cholesterol favored the formation of small aggregates. ct-DNA was condensed in the presence of the liposomes investigated. In-vitro assays demonstrated the ability of these nanoaggregates to internalize into different cell lines. A positive gene transfection into human bone osteosarcoma epithelial cells (U2OS) was also observed. The RuC1C19 surfactant was used as sensor to quantify the binding of DNA to the liposomes. Doxorubicin was encapsulated into the metallo-liposomes, demonstrating their ability to be also used as nanocarriers of drugs. A relationship between then encapsulation percentage of the antibiotic and the composition of the aggregates has been established.
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17
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Vrancianu CO, Gheorghe I, Dobre EG, Barbu IC, Cristian RE, Popa M, Lee SH, Limban C, Vlad IM, Chifiriuc MC. Emerging Strategies to Combat β-Lactamase Producing ESKAPE Pathogens. Int J Mol Sci 2020; 21:E8527. [PMID: 33198306 PMCID: PMC7697847 DOI: 10.3390/ijms21228527] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 02/06/2023] Open
Abstract
Since the discovery of penicillin by Alexander Fleming in 1929 as a therapeutic agent against staphylococci, β-lactam antibiotics (BLAs) remained the most successful antibiotic classes against the majority of bacterial strains, reaching a percentage of 65% of all medical prescriptions. Unfortunately, the emergence and diversification of β-lactamases pose indefinite health issues, limiting the clinical effectiveness of all current BLAs. One solution is to develop β-lactamase inhibitors (BLIs) capable of restoring the activity of β-lactam drugs. In this review, we will briefly present the older and new BLAs classes, their mechanisms of action, and an update of the BLIs capable of restoring the activity of β-lactam drugs against ESKAPE (Enterococcus spp., Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter spp.) pathogens. Subsequently, we will discuss several promising alternative approaches such as bacteriophages, antimicrobial peptides, nanoparticles, CRISPR (clustered regularly interspaced short palindromic repeats) cas technology, or vaccination developed to limit antimicrobial resistance in this endless fight against Gram-negative pathogens.
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Affiliation(s)
- Corneliu Ovidiu Vrancianu
- Microbiology Immunology Department and The Research Institute of the University of Bucharest, Faculty of Biology, University of Bucharest, 020956 Bucharest, Romania; (C.O.V.); (E.-G.D.); (I.C.B.); (M.P.); (M.C.C.)
| | - Irina Gheorghe
- Microbiology Immunology Department and The Research Institute of the University of Bucharest, Faculty of Biology, University of Bucharest, 020956 Bucharest, Romania; (C.O.V.); (E.-G.D.); (I.C.B.); (M.P.); (M.C.C.)
| | - Elena-Georgiana Dobre
- Microbiology Immunology Department and The Research Institute of the University of Bucharest, Faculty of Biology, University of Bucharest, 020956 Bucharest, Romania; (C.O.V.); (E.-G.D.); (I.C.B.); (M.P.); (M.C.C.)
| | - Ilda Czobor Barbu
- Microbiology Immunology Department and The Research Institute of the University of Bucharest, Faculty of Biology, University of Bucharest, 020956 Bucharest, Romania; (C.O.V.); (E.-G.D.); (I.C.B.); (M.P.); (M.C.C.)
| | - Roxana Elena Cristian
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 020956 Bucharest, Romania;
| | - Marcela Popa
- Microbiology Immunology Department and The Research Institute of the University of Bucharest, Faculty of Biology, University of Bucharest, 020956 Bucharest, Romania; (C.O.V.); (E.-G.D.); (I.C.B.); (M.P.); (M.C.C.)
| | - Sang Hee Lee
- Department of Biological Sciences, Myongji University, 03674 Myongjiro, Yongin 449-728, Gyeonggido, Korea;
- National Leading Research Laboratory, Department of Biological Sciences, Myongji University, 116 Myongjiro, Yongin 17058, Gyeonggido, Korea
| | - Carmen Limban
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, Traian Vuia no.6, 020956 Bucharest, Romania; (C.L.); (I.M.V.)
| | - Ilinca Margareta Vlad
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, Traian Vuia no.6, 020956 Bucharest, Romania; (C.L.); (I.M.V.)
| | - Mariana Carmen Chifiriuc
- Microbiology Immunology Department and The Research Institute of the University of Bucharest, Faculty of Biology, University of Bucharest, 020956 Bucharest, Romania; (C.O.V.); (E.-G.D.); (I.C.B.); (M.P.); (M.C.C.)
- Academy of Romanian Scientists, 030167 Bucharest, Romania
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18
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Santana PA, Castillo CA, Michea SA, Venegas-Yazigi D, Paredes-García V. Co 0 superparamagnetic nanoparticles stabilized by an organic layer coating with antimicrobial activity. RSC Adv 2020; 10:34712-34718. [PMID: 35514389 PMCID: PMC9056868 DOI: 10.1039/d0ra07017c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 09/11/2020] [Indexed: 11/23/2022] Open
Abstract
Cobalt (Co) is one of the most promising materials in nanotechnology due to its superior magnetic properties. However, due to the high cytotoxicity of cobalt, the activity in biological systems has been little studied. In this work, we report the structural, morphological, and magnetic properties of cobalt nanoparticles stabilized with an organic layer (Co0@C-NPs) and its potential antimicrobial activity. The Co0@C-NPs were obtained from solvothermal conditions and characterized by X-ray powder diffraction, electronic microscopy, and magnetic measurements. The organic layer was analysed by thermogravimetric analysis, Scanning Electron Microscopy, Energy Dispersive Spectrometer, and Fourier Transform Infrared Spectroscopy. From the TEM image, an organic coating layer is observed around Co0 where this coating prevents NPs from oxidation allowing it to remain stable until 400 °C. Surface composition studies by SEM/EDS allowed the identification of carbon, oxygen, and cobalt elements present in the organic layer. This result was corroborated later by FITR analysis. Preliminary antibacterial properties were also investigated, which showed that the cobalt nanoparticles are active against Staphylococcus aureus after 1 h of exposure. The superparamagnetic properties and organic coating Co0@C-NPs could be biocompatible with biological systems, but more research is needed to apply these nanoparticles in biomedical products. The Co0@C-NPs were obtained using solvothermal synthesis. The Co0@C-NPs were characterized by different techniques and its antimicrobial activity was assessed against Staphylococcus aureus by microdilution assay and scanning electron microscope.![]()
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Affiliation(s)
- Paula A Santana
- Universidad Autónoma de Chile, Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería El Llano Subercaseaux 2801, San Miguel Santiago 8910060 Chile
| | - Carolina A Castillo
- Universidad Autónoma de Chile, Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería El Llano Subercaseaux 2801, San Miguel Santiago 8910060 Chile
| | - Sebastián A Michea
- Universidad Autónoma de Chile, Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería El Llano Subercaseaux 2801, San Miguel Santiago 8910060 Chile
| | - Diego Venegas-Yazigi
- CEDENNA Santiago Chile.,Universidad de Santiago de Chile, Facultad de Química y Biología, Departamento de Química de los Materiales Santiago Chile
| | - Verónica Paredes-García
- CEDENNA Santiago Chile.,Universidad Andrés Bello, Facultad de Ciencias Exactas, Departamento de Ciencias Químicas Santiago Chile
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19
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Eleraky NE, Allam A, Hassan SB, Omar MM. Nanomedicine Fight against Antibacterial Resistance: An Overview of the Recent Pharmaceutical Innovations. Pharmaceutics 2020; 12:E142. [PMID: 32046289 PMCID: PMC7076477 DOI: 10.3390/pharmaceutics12020142] [Citation(s) in RCA: 127] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 01/29/2020] [Accepted: 02/04/2020] [Indexed: 12/16/2022] Open
Abstract
Based on the recent reports of World Health Organization, increased antibiotic resistance prevalence among bacteria represents the greatest challenge to human health. In addition, the poor solubility, stability, and side effects that lead to inefficiency of the current antibacterial therapy prompted the researchers to explore new innovative strategies to overcome such resilient microbes. Hence, novel antibiotic delivery systems are in high demand. Nanotechnology has attracted considerable interest due to their favored physicochemical properties, drug targeting efficiency, enhanced uptake, and biodistribution. The present review focuses on the recent applications of organic (liposomes, lipid-based nanoparticles, polymeric micelles, and polymeric nanoparticles), and inorganic (silver, silica, magnetic, zinc oxide (ZnO), cobalt, selenium, and cadmium) nanosystems in the domain of antibacterial delivery. We provide a concise description of the characteristics of each system that render it suitable as an antibacterial delivery agent. We also highlight the recent promising innovations used to overcome antibacterial resistance, including the use of lipid polymer nanoparticles, nonlamellar liquid crystalline nanoparticles, anti-microbial oligonucleotides, smart responsive materials, cationic peptides, and natural compounds. We further discuss the applications of antimicrobial photodynamic therapy, combination drug therapy, nano antibiotic strategy, and phage therapy, and their impact on evading antibacterial resistance. Finally, we report on the formulations that made their way towards clinical application.
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Affiliation(s)
- Nermin E. Eleraky
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt; (N.E.E.); (A.A.)
| | - Ayat Allam
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt; (N.E.E.); (A.A.)
- Assiut International Center of Nanomedicine, Al-Rajhy Liver Hospital, Assiut University, Assiut 71515, Egypt
| | - Sahar B. Hassan
- Department of Clinical pharmacy, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt;
| | - Mahmoud M. Omar
- Department of Pharmaceutics and Industrial Pharmacy, Deraya University, Minia 61768, Egypt
- Department of Pharmaceutics and Clinical Pharmacy, Faculty of Pharmacy Sohag University, Sohag 82524, Egypt
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Kumar S, Nehra M, Kedia D, Dilbaghi N, Tankeshwar K, Kim KH. Nanotechnology-based biomaterials for orthopaedic applications: Recent advances and future prospects. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 106:110154. [DOI: 10.1016/j.msec.2019.110154] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 08/04/2019] [Accepted: 08/31/2019] [Indexed: 12/13/2022]
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Rocha M, Echeverría GA, Piro OE, Jios JJ, Molina RDI, Arena ME, Ulic SE, Gil DM. Synthesis, Structure, and Biological Assays of Novel Trifluoromethyldiazepine–Metal Complexes. Aust J Chem 2020. [DOI: 10.1071/ch19352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A new series of CuII, NiII, CoII, and MnIII complexes have been synthesised from the (6Z)-6-(7-trifluoromethyl-1,2,3,4-tetrahydro-5H-1,4-diazepin-5-ylidene)cyclohexa-2,4-dien-1-one (HDZP) ligand. These complexes were characterised by elemental, spectroscopic (IR and UV-vis), and thermal analysis. The crystal structure of Cu-DZP was solved by X-ray diffraction methods. The complex crystallises in the monoclinic P21/c space group, with two molecules per unit cell. The crystal lattice is stabilised by different intra and intermolecular interactions. Hirshfeld surface analysis was employed to obtain additional information about interactions that are responsible for the crystal packing. Quantitative examination of the fingerprint plots indicated the dominant contribution of H⋯H and H⋯X (X=O, F) interactions in the crystal packing. In addition, C–H⋯chelate ring (CR) and C–H⋯π interactions are described in detail and evaluated using DFT calculations. The antibacterial properties and the mechanism of inhibition of the main bacterial resistant mechanism, the biofilm, of the metal complexes and free ligand were investigated. [Mn(DZP)3]·2H2O was the most active complex against the Pseudomonas aeruginosa biofilm formation with an inhibition of 40%. However, none of the complexes inhibit more than 25% of the Gram negative bacteria microbial development. The most meaningful result was the bactericidal effect of [Co(DZP)2(H2O)2]·2H2O against the Gram positive bacteria, Staphylococcus aureus, which inhibits the bacterial development and significantly reduces the biofilm formation at low concentration.
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