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Magdy Abbass L, Atia Sadeek S, Abd El-Raouf Aziz M, Abd-allah Zordok W, Saeed El-Attar M. Synthesis of some new nanoparticles mixed metal complexes of febuxostat in presence of 2,2′-bipyridine: Characterization, DFT, antioxidant and molecular docking activities. J Mol Liq 2023; 386:122460. [DOI: 10.1016/j.molliq.2023.122460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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2
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Wu L, Lu X, Wu Y, Huang C, Gu C, Tian Y, Ma J. An electrochemical sensor based on synergistic enhancement effects between nitrogen-doped carbon nanotubes and copper ions for ultrasensitive determination of anti-diabetic metformin. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 878:163120. [PMID: 36996983 DOI: 10.1016/j.scitotenv.2023.163120] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/19/2023] [Accepted: 03/23/2023] [Indexed: 05/13/2023]
Abstract
Metformin (MET) is the primary medicine for type II diabetes, which produces carcinogenic byproducts during chlorine disinfection, so the detection of MET in aqueous environment is crucial. In this work, an electrochemical sensor based on nitrogen-doped carbon nanotubes (NCNT) has been constructed for ultrasensitive determination of MET in the presence of Cu(II) ions. The excellent conductivity and rich π-conjugated structure of NCNT facilitate the electron transfer rate of fabricated sensor and benefit the adsorption of cation ions. Cu(II) ions can chelate with MET to form MET-Cu(II) complex, which are easily accumulated on the surface of NCNT through cation-π interaction. Attributing to the synergistic enhancement effects of NCNT and Cu(II) ions, the fabricated sensor exhibits excellent analytical performances with a low detection limit of 9.6 nmol L-1, high sensitivity of 64.97 A mol-1 cm-2 and wide linear range of 0.3-10 μmol L-1. The sensing system has been successfully applied for rapid (20 s) and selective determination of MET in real water samples with satisfactory recoveries (90.2 %-108.8 %). This study provides a robust strategy for MET detection in aqueous environment and holds great promise for rapid risk assessment and early warning of MET.
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Affiliation(s)
- Lingxia Wu
- School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China
| | - Xianbo Lu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Yun Wu
- School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China
| | - Chaonan Huang
- School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China
| | - Chuantao Gu
- School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China
| | - Yong Tian
- School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China
| | - Jiping Ma
- School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China.
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Robust corrosion guard, mechanical and UV aging properties of metal complex/epoxy hybrid composite coating for C-steel applications. Sci Rep 2022; 12:12483. [PMID: 35864183 PMCID: PMC9304329 DOI: 10.1038/s41598-022-16348-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 07/08/2022] [Indexed: 11/30/2022] Open
Abstract
Incorporation of novel-prepared metal–organic complexes as crosslinking accelerators for multifunctional epoxy was on top of interest by coating formulators. The present work investigated the loading of mixed ligand metal complexes (Zr(IV) and Cu(II)) of metformin (MF) and 2.2′bipyridine (Bipy) against the free ligands as crosslinking modifiers via some epoxy coating formulations to assess their superb performances on the C-steel surface. Zr(IV) and Cu(II) demonstrated the minor energy gap (∆E) values at 0.190 au compared to free MF and Bipy according to the calculated energy values, and this behavior reflected their enhanced properties via epoxy coating applications. EIS measurements using high saline formation water as a corrosive medium were performed and offered that PA-DGEBA/MC-Cu coated film showed the superior resistance values (Rct = 940 and Rc = 930 kΩ cm2). The accelerated corrosion salt spray experiment clarified that PA-DGEBA/MC-Cu coating achieved the least corrosion rate at 0.00049 mm/y and exhibited the highest protection efficiency of 99.84%. SEM/EDX combination survey affirmed the protective performance of the checked coatings. AFM microanalysis confirmed that surface-treated Cu(II) coating displayed the smoothest film surface with complete curing. Mechanical durability properties were evaluated and the obtained results illustrated that pull-off adhesion for PA-DGEBA/MC-Cu coated film fulfilled the highest adhesion strength at 6.3 MPa, the best bend character at 77, and the maximum impact resistance at 59.7 J. UV immovability trial was performed at 10 irradiance and 80 h duration. PA-DGEBA/MC-Cu coated film displayed the highest resistance to UV irradiance with blistering (#8 size and few frequencies) in addition to offering a minor gloss variation and matt properties.
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Li Q, Wang L, Ji D, Yu W, Zhang Y, Xiang Y, Zhou C, Wang L, Deng P, Pi H, Lu Y, Ma Q, He M, Zhang L, Yu Z, Deng A. Metformin attenuates cadmium-induced degeneration of spiral ganglion neuron via restoring autophagic flux in primary culture. J Inorg Biochem 2022; 234:111901. [PMID: 35716551 DOI: 10.1016/j.jinorgbio.2022.111901] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 05/31/2022] [Accepted: 06/07/2022] [Indexed: 10/18/2022]
Abstract
Cadmium (Cd), a common environmental and occupational toxicant, is an important risk factor for hearing loss. After exposure, Cd accumulates in the inner ear and induces spiral ganglion neuron (SGN) degeneration; however, the underlying mechanisms are poorly understood. Dysfunctional autophagy has been implicated in many neurodegenerative diseases, including Cd-induced neurotoxicity. Metformin has been validated to confer not only anti-hyperglycaemic but also neuroprotective effects. However, the relationship between autophagy dysfunction, SGN degeneration, and the effect of metformin on Cd-induced SGN neurotoxicity has not yet been established. In this study, we demonstrate that metformin notably attenuates Cd-evoked SGN degeneration by restoring impaired autophagy flux, as evidenced by the suppression of Cd-induced elevation of autophagy markers microtubule-associated protein 1A/1B-light chain 3-II (LC3-II) and autophagy substrate protein p62 in degenerated SGN. Blockage of autophagy flux by chloroquine abolished metformin-induced neuroprotection against Cd-induced neurotoxicity in SGN. The results of this study reveal that autophagy dysfunction is an important component of Cd-induced SGN degeneration, and metformin may be a potential protective agent for attenuating SGN degeneration following Cd exposure.
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Affiliation(s)
- Qian Li
- Department of Otolaryngology Head and Neck Surgery, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Liuqian Wang
- Department of Otolaryngology Head and Neck Surgery, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Di Ji
- Department of Otolaryngology Head and Neck Surgery, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Wei Yu
- Department of Otolaryngology Head and Neck Surgery, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yan Zhang
- Department of Otolaryngology Head and Neck Surgery, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yanghong Xiang
- Department of Otolaryngology Head and Neck Surgery, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Chao Zhou
- Department of Occupational Health, Army Medical University (Third Military Medical University), Chongqing, China
| | - Liting Wang
- Biomedical Analysis Center, Army Medical University (Third Military Medical University), Chongqing, China
| | - Ping Deng
- Department of Occupational Health, Army Medical University (Third Military Medical University), Chongqing, China
| | - Huifeng Pi
- Department of Occupational Health, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yonghui Lu
- Department of Occupational Health, Army Medical University (Third Military Medical University), Chongqing, China
| | - Qinlong Ma
- Department of Occupational Health, Army Medical University (Third Military Medical University), Chongqing, China
| | - Mindi He
- Department of Occupational Health, Army Medical University (Third Military Medical University), Chongqing, China
| | - Lei Zhang
- Department of Occupational Health, Army Medical University (Third Military Medical University), Chongqing, China
| | - Zhengping Yu
- Department of Occupational Health, Army Medical University (Third Military Medical University), Chongqing, China
| | - Anchun Deng
- Department of Otolaryngology Head and Neck Surgery, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China.
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Rusanov DA, Zou J, Babak MV. Biological Properties of Transition Metal Complexes with Metformin and Its Analogues. Pharmaceuticals (Basel) 2022; 15:ph15040453. [PMID: 35455450 PMCID: PMC9031419 DOI: 10.3390/ph15040453] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 03/29/2022] [Accepted: 04/01/2022] [Indexed: 12/12/2022] Open
Abstract
Metformin is a widely prescribed medication for the treatment and management of type 2 diabetes. It belongs to a class of biguanides, which are characterized by a wide range of diverse biological properties, including anticancer, antimicrobial, antimalarial, cardioprotective and other activities. It is known that biguanides serve as excellent N-donor bidentate ligands and readily form complexes with virtually all transition metals. Recent evidence suggests that the mechanism of action of metformin and its analogues is linked to their metal-binding properties. These findings prompted us to summarize the existing data on the synthetic strategies and biological properties of various metal complexes with metformin and its analogues. We demonstrated that coordination of biologically active biguanides to various metal centers often resulted in an improved pharmacological profile, including reduced drug resistance as well as a wider spectrum of activity. In addition, coordination to the redox-active metal centers, such as Au(III), allowed for various activatable strategies, leading to the selective activation of the prodrugs and reduced off-target toxicity.
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Affiliation(s)
- Daniil A. Rusanov
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, China; (D.A.R.); (J.Z.)
- Laboratory of Medicinal Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Avenue 47, 119991 Moscow, Russia
| | - Jiaying Zou
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, China; (D.A.R.); (J.Z.)
- Department of Biochemical Engineering, University College London, Bernard Katz Building, Gower Street, London WC1E 6BT, UK
| | - Maria V. Babak
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, China; (D.A.R.); (J.Z.)
- Correspondence:
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Spectroscopic Characterization, Thermogravimetry and Biological Studies of Ru(III), Pt(IV), Au(III) Complexes with Sulfamethoxazole Drug Ligand. CRYSTALS 2022. [DOI: 10.3390/cryst12030340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Complexes of Ru(III), Pt(IV), and Au(III) with sulfamethoxazole (SMX) were experimentally produced. The resulted formations of novel metal complexes were discussed using several techniques, such as effective magnetic moment molar conductivity, IR, UV, and 1H NMR spectra, elemental analyses, thermal analysis, microscopic and XRD analyses. The X-ray diffraction patterns of the solid powders of the synthesized sulfamethoxazole complexes indicated their identical formulation. The surface uniformity of the complexes’ samples was confirmed by SEM images. These complexes appear as spots, dark in appearance, with particle sizes of 100–200 nanometers in transmission electron microscopy (TEM) pictures. The sulfamethoxazole ligand was shown to be bidentate coordinated to the metallic ions with sulfonyle oxygen and amido nitrogen groups, according to IR spectral data. Both Ru(III) and Au(III) complexes have an electrolytic nature, but the Pt(IV) complex has non-electrolytic properties. TG and DTG experiments proved the assigned composition and provided information regarding the thermal stability of complexes in a dynamic air atmosphere, according to the thermal analysis. The effect of the novel prepared complexes was examined for antibacterial and antifungal activity in vitro against a variety of pathogens, and they exceeded the sulfamethoxazole ligand in antibacterial activity. It was observed that the Pt(IV) complex has the ultimate activity versus all the assessed organisms relative to all compounds.
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Zeng Z, Cai J, Li F, Weng Y, Huang Q, Yang H, Huang Q, Wei Y. Synthesis, crystal structures, DNA interactions, and antitumor activity of two new dinuclear copper(ii) complexes with thiazole ligand. RSC Adv 2021; 11:40040-40050. [PMID: 35494110 PMCID: PMC9044605 DOI: 10.1039/d1ra05798g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 12/01/2021] [Indexed: 12/24/2022] Open
Abstract
Two new dinuclear copper(ii) complexes, [Cu(ambt)2(cnba)4] (1) and [Cu(ambt)2(clba)4] (2) were synthesized with 2-amino-6-methoxybenzothiazole (ambt) as the main ligand. The structures of the two complexes were characterized by single-crystal XRD. The binding between CT-DNA (calf thymus DNA) and the complexes was evaluated by viscometry, electronic absorption, and fluorescence spectroscopy, and the binding constants were calculated using the Stern-Volmer equation. The complexes were intercalatively bound to CT-DNA, and [Cu(ambt)2(clba)4] having a greater binding constant than [Cu(ambt)2(cnba)4]. The two complexes had better antitumor properties against HepG2 (human hepatocellular carcinoma), A549 (human lung carcinoma), and HeLa (human cervical carcinoma) tumor cell lines than their respective ligands and cisplatin. Furthermore, [Cu(ambt)2(clba)4] had a stronger inhibitory ability on the three types of tumor cells than [Cu(ambt)2(cnba)4], which is congruent with the binding power of the complexes with DNA. Flow cytometry revealed that [Cu(ambt)2(cnba)4] and [Cu(ambt)2(clba)4] could trigger apoptosis or necrosis, arrest the HepG2 cell cycles, and cause G0/G1-phase cells to accumulate.
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Affiliation(s)
- Zhenfang Zeng
- School of Chemical and Biological Engineering, Guangxi Normal University for Nationalities 23 Fozi Road Chongzuo 532200 PR China +86-771-787-0799 +86-771-787-0799
| | - Jiehui Cai
- School of Chemical and Biological Engineering, Guangxi Normal University for Nationalities 23 Fozi Road Chongzuo 532200 PR China +86-771-787-0799 +86-771-787-0799
| | - Fuyan Li
- School of Chemical and Biological Engineering, Guangxi Normal University for Nationalities 23 Fozi Road Chongzuo 532200 PR China +86-771-787-0799 +86-771-787-0799
| | - Yanying Weng
- School of Chemical and Biological Engineering, Guangxi Normal University for Nationalities 23 Fozi Road Chongzuo 532200 PR China +86-771-787-0799 +86-771-787-0799
| | - Qiuping Huang
- School of Chemical and Biological Engineering, Guangxi Normal University for Nationalities 23 Fozi Road Chongzuo 532200 PR China +86-771-787-0799 +86-771-787-0799
| | - Honglan Yang
- School of Chemical and Biological Engineering, Guangxi Normal University for Nationalities 23 Fozi Road Chongzuo 532200 PR China +86-771-787-0799 +86-771-787-0799
| | - Qiuchan Huang
- School of Chemical and Biological Engineering, Guangxi Normal University for Nationalities 23 Fozi Road Chongzuo 532200 PR China +86-771-787-0799 +86-771-787-0799
| | - Youhuan Wei
- School of Chemical and Biological Engineering, Guangxi Normal University for Nationalities 23 Fozi Road Chongzuo 532200 PR China +86-771-787-0799 +86-771-787-0799
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Abbass LM, Sadeek SA, Zordok WA, El-Telbany M, El-Shwiniy WH. Synthesis, Structure, DFT, and Biological Activity of Metal Complexes of Norfloxacin and Metformin Mixed Ligand. RUSS J GEN CHEM+ 2021. [DOI: 10.1134/s1070363221090243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Fadl A, Sadeek S, Magdy L, Abdou M, El-Shiwiniy W. Multi-functional epoxy composite coating incorporating mixed Cu(II) and Zr(IV) complexes of metformin and 2,2\-bipyridine as intensive network cross-linkers exhibiting anti-corrosion, self-healing and chemical-resistance performances for steel petroleum platforms. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103367] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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El‐Shwiniy WH, Elwahed MGA, Saeed RM, Zordok WA, El‐Desoky SI. Structural elucidation, molecular modeling, and biological and antioxidant studies of phenanthroline/nicotinamide metals complexes. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6231] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Walaa H. El‐Shwiniy
- Department of Chemistry, Faculty of Science Zagazig University Zagazig Egypt
- Department of Chemistry, College of Science University of Bisha Bisha Saudi Arabia
| | | | - Reham M. Saeed
- Department of Chemistry, Faculty of Science Zagazig University Zagazig Egypt
| | - Wael A. Zordok
- Department of Chemistry, Faculty of Science Zagazig University Zagazig Egypt
- Department of Chemistry University College of Quanfudha, Umm Al‐Qura University Al Qunfudhah Saudi Arabia
| | - Sameh I. El‐Desoky
- Regional Joint Laboratory Directorate of Health Affairs, The Arab Republic of Egypt Zagazig Egypt
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Mohamed AA, Sadeek SA. Ligational and biological studies of Fe(III), Co(II), Ni(II), Cu(II), and Zr(IV) complexes with carbamazepine as antiepileptic drug. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6178] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Amira A. Mohamed
- Department of Basic Science Zagazig Higher Institute of Engineering and Technology Zagazig Egypt
| | - Sadeek A. Sadeek
- Department of Chemistry, Faculty of Science Zagazig University Zagazig Egypt
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