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Ur Rahman H, Khan E, Muhammad M, Khan M, Ahmad Bhat M, Shahzada Khan G, Ali N. Antioxidant and Antibacterial Screening and Hg(II) Sensing, Activities of Cu(II)pyridine-2,6-dicarboxylate Complexes. ChemistryOpen 2024:e202400089. [PMID: 39051714 DOI: 10.1002/open.202400089] [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: 03/18/2024] [Revised: 05/18/2024] [Indexed: 07/27/2024] Open
Abstract
In this study five different complexes of Cu(II) were synthesized for the purpose of environmentally notorious mercury sensing and preliminary biological screening. Pyridine-2,6-dicarboxylic acid (also known as dipicolinic acid, and abbreviated as H2DPA), 3-phenyl pyrazole (3-ppz), 4-iodo-1H-pyrazole (4-ipz), 4-nitropyrazole (4-npz), 4-bromopyrazole (4-bpz), and 4-chloropyrazole (4-cpz) were chosen as potential ligands. The synthesized complexes labelled as 1-5, namely [Cu(DPA)(3-ppz)], [Cu(DPA)(4-ipz)], [Cu(DPA)(4-npz)], [Cu(DPA)(4-bpz)], [Cu(DPA)(4-cpz)], were proposed based on spectroscopic data (FTIR, TGA, and UV-visible spectroscopy). These complexes feature C=O functionalities that are not involved in coordination and may be used for further applications. The isolated complexes were utilized for detecting Hg(II) ions in water samples. Various concentrations of Hg(II) ions were prepared for detection purposes, and changes in absorption concerning complexes 1-5 were determined using UV-Visible spectroscopy. It was found that complexes 3 and 4 exhibit efficient sensing abilities towards Hg(II) ions. The antibacterial activities of complexes 1-5 were assessed against S. typhi and E. coli. The complexes 1 and 3 displayed good antibacterial activities against S. typhi (13.67, and 13.56 mm, respectively) while complexes 1, 2 and 4 were found to be efficient against E. coli (11.6, 12.66, 11.31 mm, respectively). The absorption maxima of 2,2-diphenyl-1-picryhydrazyl (DPPH) at 517 nm, considerably shifted upon addition of complexes 1-5. The results reveal that the complexes possess potential free radical scavenging abilities.
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Affiliation(s)
- Hameed Ur Rahman
- Department of Chemistry, University of Malakand, 18800, Chakdara, Dir (Lower), Khyber, Pakhtunkhwa, Pakistan
| | - Ezzat Khan
- Department of Chemistry, University of Malakand, 18800, Chakdara, Dir (Lower), Khyber, Pakhtunkhwa, Pakistan
- Department of Chemistry, College of Science, University of Bahrain, Main Campus, 32038, Sakhir, Kingdom of Bahrain
| | - Mian Muhammad
- Department of Chemistry, University of Malakand, 18800, Chakdara, Dir (Lower), Khyber, Pakhtunkhwa, Pakistan
| | - Maaz Khan
- Department of Chemistry, University of Malakand, 18800, Chakdara, Dir (Lower), Khyber, Pakhtunkhwa, Pakistan
| | - Mashooq Ahmad Bhat
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Gul Shahzada Khan
- Department of Chemistry, College of Science, University of Bahrain, Main Campus, 32038, Sakhir, Kingdom of Bahrain
| | - Nisar Ali
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Faculty of Chemical Engineering, National and Local Joint Engineering Research Centre for Deep Utilization Technology of Rock-Salt Resource, Huaiyin Institute of Technology, 223003, Huaian, China
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Karapetyan NH, Haroutiunian SG, Ananyan GV. Influence of Cu L-Histidinate Schiff Base Derivatives on Structural Features of Irradiated Rat's DNA. Cell Biochem Biophys 2024:10.1007/s12013-024-01368-9. [PMID: 38922498 DOI: 10.1007/s12013-024-01368-9] [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] [Accepted: 06/13/2024] [Indexed: 06/27/2024]
Abstract
A study of rats liver DNA damages under the influence of X-ray radiation at a dose of 6.5 Gy(LD60) was carried out. The radioprotective properties of newly synthesized Cu(II) L-Schiff Histidinate complexes were also studied. The survival of rats was determined over a 30-day period after exposure to X-rays without pretreatment and also after preadministration of Cu(II) L-Histidinate-Schiff base complexes. The structural defects of rat's liver DNA were detected at 3, 7, 14, and 30 days post-irradiation extracted. The results obtained revealed that irradiation with a 6.5Gy dose in the control group degraded the characteristics of rat liver DNA in comparison to healthy DNA. On all investigated experimental days, a decrease in the melting temperature (Tm), a widening of the melting interval (ΔT), and a decrease in hypochromicity (Δh) were observed in the DNA samples of irradiated animals compared to the norm. The rat's pretreatment by Cu(II) L-Histidinate complexes 1 or 24 hours prior to irradiation improved DNA characteristics. Electrophoretic studies of DNA were in good agreement with the melting data. Based on the study results, it can be concluded that Cu(II) L-Histidinate complexes exhibit radioprotective properties under the studied conditions and can protect DNA from damage.
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Affiliation(s)
- Nelli H Karapetyan
- Department of Molecular Physics, Yerevan State University, 1 Alex Manoogian St. 0025, Yerevan, Armenia.
| | - Samvel G Haroutiunian
- Department of Molecular Physics, Yerevan State University, 1 Alex Manoogian St. 0025, Yerevan, Armenia
| | - Gayane V Ananyan
- Department of Molecular Physics, Yerevan State University, 1 Alex Manoogian St. 0025, Yerevan, Armenia
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Székely E, Molnár M, Lihi N, Várnagy K. Characterization of Copper(II) and Zinc(II) Complexes of Peptides Mimicking the CuZnSOD Enzyme. Molecules 2024; 29:795. [PMID: 38398547 PMCID: PMC10892282 DOI: 10.3390/molecules29040795] [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: 12/29/2023] [Revised: 02/01/2024] [Accepted: 02/01/2024] [Indexed: 02/25/2024] Open
Abstract
Antimicrobial peptides are short cationic peptides that are present on biological surfaces susceptible to infection, and they play an important role in innate immunity. These peptides, like other compounds with antimicrobial activity, often have significant superoxide dismutase (SOD) activity. One direction of our research is the characterization of peptides modeling the CuZnSOD enzyme and the determination of their biological activity, and these results may contribute to the development of novel antimicrobial peptides. In the framework of this research, we have synthesized 10, 15, and 16-membered model peptides containing the amino acid sequence corresponding to the Cu(II) and Zn(II) binding sites of the CuZnSOD enzyme, namely the Zn(II)-binding HVGD sequence (80-83. fragments), the Cu(II)-binding sequence HVH (fragments 46-48), and the histidine (His63), which links the two metal ions as an imidazolate bridge: Ac-FHVHEGPHFN-NH2 (L1(10)), Ac-FHVHAGPHFNGGHVG-NH2 (L2(15)), and Ac-FHVHEGPHFNGGHVGD-NH2 (L3(16)). pH-potentiometric, UV-Vis-, and CD-spectroscopy studies of the Cu(II), Zn(II), and Cu(II)-Zn(II) mixed complexes of these peptides were performed, and the SOD activity of the complexes was determined. The binding sites preferred by Cu(II) and Zn(II) were identified by means of CD-spectroscopy. From the results obtained for these systems, it can be concluded that in equimolar solution, the -(NGG)HVGD- sequence of the peptides is the preferred binding site for copper(II) ion. However, in the presence of both metal ions, according to the native enzyme, the -HVGD- sequence offers the main binding site for Zn(II), while the majority of Cu(II) binds to the -FHVH- sequence. Based on the SOD activity assays, complexes of the 15- and 16-membered peptide have a significant SOD activity. Although this activity is smaller than that of the native CuZnSOD enzyme, the complexes showed better performance in the degradation of superoxide anion than other SOD mimics. Thus, the incorporation of specific amino acid sequences mimicking the CuZnSOD enzyme increases the efficiency of model systems in the catalytic decomposition of superoxide anion.
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Affiliation(s)
| | | | | | - Katalin Várnagy
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem Square 1, H-4032 Debrecen, Hungary
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Li Q, Cai Q, Pan L, Tang X, Ling G, Wei Y, Li X, Yang S. Changes in the Microbiome of Sugarcane ( Saccharum spp. Hybrids.) Rhizosphere in Response to Manganese Toxicity. Life (Basel) 2023; 13:1956. [PMID: 37895338 PMCID: PMC10608702 DOI: 10.3390/life13101956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023] Open
Abstract
Manganese toxicity has limited sugarcane (Saccharum spp. hybrid.) growth and production in acidic soils in south China. The rhizosphere plays an irreplaceable role in plant adaptation to soil abiotic stress, but the responses of the sugarcane rhizosphere to manganese toxicity are still unknown. We designed pot experiments in Mn-rich acidic soil, collected the sugarcane rhizosphere and bulk soil samples, and then investigated the changes in Mn-related soil parameters and microbiome. The results indicated that the water-soluble and exchangeable manganese concentrations in the sugarcane rhizosphere were significantly lower than that in the bulk soil, which was not associated with soil pH changes. In contrast, the number of bacteria and the activity of peroxidase, sucrase, urease, and laccase in the rhizosphere were significantly higher. The 16S rDNA sequencing results showed that the bacterial diversity and quantity along with the abundance of Proteobacteria in the rhizosphere were significantly higher than in the bulk soil, while the abundance of Acidobacteria was lower than in the bulk soil. The soil laccase activity and the number of bacteria decreased significantly with the increase in the manganese toxicity stress. Finally, the relative abundance of proteins associated with manganese transportation and oxidation was significantly higher in the rhizosphere soil. In summary, the Mn-induced response of the rhizosphere is an important mechanism in sugarcane adaptation to manganese toxicity in acidic soil.
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Affiliation(s)
- Qiuyue Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China (X.T.)
| | - Qiuliang Cai
- Agriculture and Food Engineering College, Baise University, Baise 533000, China
| | - Linjuan Pan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China (X.T.)
| | - Xinlian Tang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China (X.T.)
| | - Guizhi Ling
- Institute for New Rural Development, Guangxi University, Nanning 530004, China
| | - Yanyan Wei
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China (X.T.)
| | - Xiaofeng Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China (X.T.)
| | - Shu Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China (X.T.)
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Li Y, Mei J, Wang J, Liu H. Effects of dandelion (Taraxacum sp.,) supplements on lactation performance, antioxidative activity, and plasma metabolome in primiparous dairy cows. Anim Biosci 2023; 36:229-237. [PMID: 36108692 PMCID: PMC9834724 DOI: 10.5713/ab.22.0061] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 08/05/2022] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE This study evaluated the effects of dandelion supplements on lactation performance, circulating antioxidative activity and plasma metabolomics in primiparous dairy cows. METHODS A total of 60 mid-lactation dairy cows (milk yield = 34.29±0.34 kg/d; days in milk = 151.72±2.36 days) were divided into 4 treatment groups randomly, comprising the addition of dandelion at 0, 100, 200, 400 g/d per head. The experiment lasted for 8 weeks with an extra 10 days' pre-feeding period. Milk and blood samples were collected, and plasma samples were selected to perform metabolomics analysis. RESULTS Supplementing 200 g/d of dandelion increased the yield of milk and lactose (p≤ 0.05). The milk somatic cell counts (p≤0.05) were lower in all dandelion groups than those in the control group. The activity of glutathione peroxidase (p≤0.05) and superoxide dismutase (p≤0.05) were increased and plasma malondialdehyde (p = 0.01) was decreased when cows were fed 200 g/d dandelion. Plasma metabolomics analysis showed that 23 hub differential metabolites were identified in the 200 g/d dandelion group. These metabolites such as ribose, glutamic acid, valine, and phenylalanine were enriched in D-glutamine and D-glutamate metabolism (p = 0.06, impact value = 1), phenylalanine, tyrosine, and tryptophan biosynthesis (p = 0.05, impact value = 0.5), and starch and sucrose metabolism (p = 0.21, impact value = 0.13). Moreover, correlation analysis showed that circulating ribose, mannose, and glutamic acid were positively related to milk yield. CONCLUSION Dandelion supplementation could improve lactation performance and elevate the plasma carbohydrate and amino acids metabolism and antioxidative activity. Supplementation of 200 g/d dandelion is recommended for lactating dairy cows.
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Affiliation(s)
- Yan Li
- College of Animal Sciences, Zhejiang University, Hangzhou 310058,
China
| | - Jie Mei
- College of Animal Sciences, Zhejiang University, Hangzhou 310058,
China
| | - Jiaqi Wang
- College of Animal Sciences, Zhejiang University, Hangzhou 310058,
China
| | - Hongyun Liu
- College of Animal Sciences, Zhejiang University, Hangzhou 310058,
China,Corresponding Author: Hongyun Liu, Tel: +86-571-8898-2965, Fax: +86-571-8898-2930, E-mail:
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Andrejević TP, Aleksic I, Kljun J, Počkaj M, Zlatar M, Vojnovic S, Nikodinovic-Runic J, Turel I, Djuran MI, Glišić BĐ. Copper(ii) and silver(i) complexes with dimethyl 6-(pyrazine-2-yl)pyridine-3,4-dicarboxylate (py-2pz): the influence of the metal ion on the antimicrobial potential of the complex. RSC Adv 2023; 13:4376-4393. [PMID: 36744286 PMCID: PMC9890663 DOI: 10.1039/d2ra07401j] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 01/19/2023] [Indexed: 02/04/2023] Open
Abstract
Dimethyl 6-(pyrazine-2-yl)pyridine-3,4-dicarboxylate (py-2pz) was used as a ligand for the synthesis of new copper(ii) and silver(i) complexes, [CuCl2(py-2pz)]2 (1), [Cu(CF3SO3)(H2O)(py-2pz)2]CF3SO3·2H2O (2), [Ag(py-2pz)2]PF6 (3) and {[Ag(NO3)(py-2pz)]·0.5H2O} n (4). The complexes were characterized by spectroscopic and electrochemical methods, while their structures were determined by single crystal X-ray diffraction analysis. The X-ray analysis revealed the bidentate coordination mode of py-2pz to the corresponding metal ion via its pyridine and pyrazine nitrogen atoms in all complexes, while in polynuclear complex 4, the heterocyclic pyrazine ring of one py-2pz additionally behaves as a bridging ligand between two Ag(i) ions. DFT calculations were performed to elucidate the structures of the investigated complexes in solution. The antimicrobial potential of the complexes 1-4 was evaluated against two bacterial (Pseudomonas aeruginosa and Staphylococcus aureus) and two Candida (C. albicans and C. parapsilosis) species. Silver(i) complexes 3 and 4 have shown good antibacterial and antifungal properties with minimal inhibitory concentration (MIC) values ranging from 4.9 to 39.0 μM (3.9-31.2 μg mL-1). All complexes inhibited the filamentation of C. albicans and hyphae formation, while silver(i) complexes 3 and 4 had also the ability to inhibit the biofilm formation process of this fungus. The binding affinity of the complexes 1-4 with calf thymus DNA (ct-DNA) and bovine serum albumin (BSA) was studied by fluorescence emission spectroscopy to clarify the mode of their antimicrobial activity. Catechol oxidase biomimetic catalytic activity of copper(ii) complexes 1 and 2 was additionally investigated by using 3,5-di-tert-butylcatechol (3,5-DTBC) and o-aminophenol (OAP) as substrates.
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Affiliation(s)
- Tina P Andrejević
- Department of Chemistry, Faculty of Science, University of Kragujevac R. Domanovića 12 34000 Kragujevac Serbia
| | - Ivana Aleksic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade Vojvode Stepe 444a 11042 Belgrade Serbia
| | - Jakob Kljun
- Faculty of Chemistry and Chemical Technology, University of Ljubljana Večna Pot 113 Ljubljana SI-1000 Slovenia
| | - Marta Počkaj
- Faculty of Chemistry and Chemical Technology, University of Ljubljana Večna Pot 113 Ljubljana SI-1000 Slovenia
| | - Matija Zlatar
- Department of Chemistry, University of Belgrade-Institute of Chemistry, Technology and Metallurgy Njegoševa 12 11000 Belgrade Serbia
| | - Sandra Vojnovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade Vojvode Stepe 444a 11042 Belgrade Serbia
| | - Jasmina Nikodinovic-Runic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade Vojvode Stepe 444a 11042 Belgrade Serbia
| | - Iztok Turel
- Faculty of Chemistry and Chemical Technology, University of Ljubljana Večna Pot 113 Ljubljana SI-1000 Slovenia
| | - Miloš I Djuran
- Serbian Academy of Sciences and Arts Knez Mihailova 35 11000 Belgrade Serbia
| | - Biljana Đ Glišić
- Department of Chemistry, Faculty of Science, University of Kragujevac R. Domanovića 12 34000 Kragujevac Serbia
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Villa-Pérez C, Cadavid-Vargas JF, Medina JJM, Echeverría GA, Camí GE, Virgilio ALD, Soria DB. Physicochemical and biological studies of Ni(II), Cu(II) and Zn(II) ternary complexes of sulfaquinoxaline and 2,2’-bipyrimidine. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Patekar M, Mali A, Kalawade K, Jadhav G, Deshmukh D, Medhane V. Synthesis and Evaluation of Novel (5S)-5-(Aminomethyl)-3-[4-(6,7-Dihydrothieno[3,2- c]Pyridin-5(4 H)-yl)Phenyl]-1,3-Oxazolidin-2-One Derivatives as Potent Antimicrobial Agents. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2118324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Mukunda Patekar
- Department of Chemistry, Organic Chemistry Research Center, KTHM College, Nashik, India
| | - Anil Mali
- Department of Chemistry, Organic Chemistry Research Center, KTHM College, Nashik, India
| | - Kaustubh Kalawade
- Department of Chemistry, Organic Chemistry Research Center, KTHM College, Nashik, India
| | - Ghanshyam Jadhav
- Department of Chemistry, Organic Chemistry Research Center, KTHM College, Nashik, India
| | - Dattatray Deshmukh
- Department of Chemistry, Organic Chemistry Research Center, KTHM College, Nashik, India
| | - Vijay Medhane
- Department of Chemistry, Organic Chemistry Research Center, KTHM College, Nashik, India
- Department of Chemistry, SVKT College, Nashik, India
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Khursheed S, Rafiq Wani M, Shadab G, Tabassum S, Arjmand F. Synthesis, Structure Elucidation by Multi-spectroscopic Techniques and Single-crystal X-ray Diffraction of Promising Fluoro/Bromo-substituted-chromone(bpy)copper(II) Anticancer Drug Entities. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Verma VA, Halu B, Saundane AR, Meti RS. Synthesis, Biological Validation, and Docking Studies of Novel Purine Derivatives Containing Pyridopyrimidine, Pyrazolopyridine, and Pyranonapthyridine Rings †. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2020.1871384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Vaijinath A. Verma
- Department of Chemistry, Shri Prabhu Arts, Science and J.M. Bohra Commerce, Degree College, Shorapur, India
| | - Bharathi Halu
- Departmet of Biology, Government Pre University College, Sedam, India
| | - Anand R. Saundane
- Department of P.G. Studies and Research in Chemistry, Gulbarga University, Kalaburagi, India
| | - Rajkumar S. Meti
- Department of Biochemistry, Mangalore University, P.G. Centre Chikka Aluvara, Mangalore, India
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Xu S, Wang X, Zhang F, Jiang Y, Zhang Y, Cheng M, Yan X, Hong Q, He J, Qiu J. PicR as a MarR Family Transcriptional Repressor Multiply Controls the Transcription of Picolinic Acid Degradation Gene Cluster pic in Alcaligenes faecalis JQ135. Appl Environ Microbiol 2022; 88:e0017222. [PMID: 35604228 PMCID: PMC9195942 DOI: 10.1128/aem.00172-22] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 04/29/2022] [Indexed: 11/20/2022] Open
Abstract
Picolinic acid (PA) is a natural toxic pyridine derivative as well as an important intermediate used in the chemical industry. In a previous study, we identified a gene cluster, pic, that responsible for the catabolism of PA in Alcaligenes faecalis JQ135. However, the transcriptional regulation of the pic cluster remains known. This study showed that the entire pic cluster was composed of 17 genes and transcribed as four operons: picR, picCDEF, picB4B3B2B1, and picT1A1A2A3T2T3MN. Deletion of picR, encoding a putative MarR-type regulator, greatly shortened the lag phase of PA degradation. An electrophoretic mobility shift assay and DNase I footprinting showed that PicR has one binding site in the picR-picC intergenic region and two binding sites in the picB-picT1 intergenic region. The DNA sequences of the three binding sites have the palindromic characteristics of TCAG-N4-CTNN: the space consists of four nonspecific bases, and the four palindromic bases on the left and the first two palindromic bases on the right are strictly conserved, while the last two bases on the right vary among the three binding sites. An in vivo β-galactosidase activity reporter assay indicated that 6-hydroxypicolinic acid but not PA acted as a ligand of PicR, preventing PicR from binding to promoter regions and thus derepressing the transcription of the pic cluster. This study revealed the negative transcriptional regulation mechanism of PA degradation by PicR in A. faecalis JQ135 and provides new insights into the structure and function of the MarR-type regulator. IMPORTANCE The pic gene cluster was found to be responsible for PA degradation and widely distributed in Alpha-, Beta-, and Gammaproteobacteria. Thus, it is very necessary to understand the regulation mechanism of the pic cluster in these strains. This study revealed that PicR binds to three sites of the promoter regions of the pic cluster to multiply regulate the transcription of the pic cluster, which enables A. faecalis JQ135 to efficiently utilize PA. Furthermore, the study also found a unique palindrome sequence for binding of the MarR-type regulator. This study enhanced our understanding of microbial catabolism of environmental toxic pyridine derivatives.
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Affiliation(s)
- Siqiong Xu
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Xiao Wang
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Fuyin Zhang
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yinhu Jiang
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yanting Zhang
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Minggen Cheng
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Xin Yan
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Qing Hong
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Jian He
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Jiguo Qiu
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
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Falkievich DB, Martínez Medina JJ, Alegre WS, López Tévez LL, Franca CA, Ferrer EG, Williams PAM. Computational studies, antimicrobial activity, inhibition of biofilm production and safety profile of the cadmium complex of 1,10‐phenanthroline and cyanoguanidine. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | - Carlos A. Franca
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata La Plata Argentina
| | - Evelina G. Ferrer
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata La Plata Argentina
| | - Patricia A. M. Williams
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata La Plata Argentina
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Synthesis, Antibiofilm activity and molecular docking study of new water-soluble copper(II)-pincer complexes. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109316] [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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Del Carpio E, Serrano ML, Hernández L, Madden W, Lubes V, Landaeta VR, Rodríguez-Lugo RE, Lubes G, Stern A, Ciangherotti C, Jiménez L. Speciation study and biological activity of copper (II) complexes with picolinic and 6-methylpicolinic acid with different components of blood serum of low molecular mass in KNO3 1.0 mol·L−1 at 25 °C. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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De S, Kumar S K A, Shah SK, Kazi S, Sarkar N, Banerjee S, Dey S. Pyridine: the scaffolds with significant clinical diversity. RSC Adv 2022; 12:15385-15406. [PMID: 35693235 PMCID: PMC9121228 DOI: 10.1039/d2ra01571d] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 04/27/2022] [Indexed: 12/20/2022] Open
Abstract
The nitrogen-bearing heterocycle pyridine in its several analogous forms occupies an important position as a precious source of clinically useful agents in the field of medicinal chemistry research. This privileged scaffold has been consistently incorporated in a diverse range of drug candidates approved by the FDA (Food and Drug Administration). This moiety has attracted increasing attention from several disease states owing to its ease of parallelization and testing potential pertaining to the chemical space. In the next few years, a larger share of novel pyridine-based drug candidates is expected. This review unifies the current advances in novel pyridine-based molecular frameworks and their unique clinical relevance as reported over the last two decades. It highlights an inclination to the use of pyridine-based molecules in drug crafting and the subsequent emergence of several potent and eligible candidates against a range of diversified diseases. The nitrogen-bearing heterocycle pyridine in its several analogous forms occupies an important position as a precious source of clinically useful agents in the field of medicinal chemistry research.![]()
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Affiliation(s)
- Sourav De
- Department of Pharmaceutical Technology, School of Medical Science, Adamas University, Kolkata-700126, West Bengal, India
| | - Ashok Kumar S K
- Department of Chemistry, School of Advanced Sciences, VIT, Vellore-632014, India
| | - Suraj Kumar Shah
- Department of Pharmaceutical Technology, School of Medical Science, Adamas University, Kolkata-700126, West Bengal, India
| | - Sabnaz Kazi
- Department of Pharmaceutical Technology, School of Medical Science, Adamas University, Kolkata-700126, West Bengal, India
| | - Nandan Sarkar
- Department of Pharmaceutical Technology, School of Medical Science, Adamas University, Kolkata-700126, West Bengal, India
| | - Subhasis Banerjee
- Department of Pharmaceutical Chemistry, Gupta College of Technological Sciences, Asansol-713301, West Bengal, India
| | - Sanjay Dey
- Department of Pharmaceutical Technology, School of Medical Science, Adamas University, Kolkata-700126, West Bengal, India
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16
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Burgart Y, Shchegolkov E, Shchur I, Kopchuk D, Gerasimova N, Borisevich S, Evstigneeva N, Zyryanov G, Savchuk M, Ulitko M, Zilberberg N, Kungurov N, Saloutin V, Charushin V, Chupakhin O. Promising Antifungal and Antibacterial Agents Based on 5-Aryl-2,2'-bipyridines and Their Heteroligand Salicylate Metal Complexes: Synthesis, Bioevaluation, Molecular Docking. ChemMedChem 2021; 17:e202100577. [PMID: 34783161 DOI: 10.1002/cmdc.202100577] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/11/2021] [Indexed: 12/25/2022]
Abstract
A series of new 5-aryl-2,2'-bipyridines and their (polyfluoro)salicylate complexes of Cu(II), Co(II) and Mn(II) were synthesized. Their antimicrobial activity was evaluated in vitro against six strains of Trichophytons, E. floccosum, M. canis, C. ablicans and Gram-negative bacteria N. gonorrhoeae. Among azo-ligands, Ph-bipy and Tol-bipy showed promising antifungal activity (minimum inhibitory concentration (MIC)<0.8-27 μM). Their antifungal action was found can be realized via binding Fe(III) ions. Tol-bipy suppressed growth of Gram-positive bacteria S. aureus, S. aureus MRSA and their monospecies biofilms (MIC 6-16 μM). Using molecular docking, the anti-staphylococcal action mechanism based on the inhibition of S. aureus DNA gyrase GyrB was proposed for the lead compounds. Among metal complexes, Cu(II) and Mn(II) complexes based on tetrafluorosalicylic acid and Tol-bipy or Ph-bipy had the high antifungal activity (MIC<0.24-32 μM). Mn(SalF4 -2H)2 (Tol-bipy)2 ] suppressed the growth of seven Candida strains at MIC 12-24 μM. [Cu(Sal-2H)(Ph-bipy)] and [Cu(SalF3 -2H)(Ph-bipy)2 ] showed the promising anti-gonorrhoeae activity (MIC 4.2-5.2 μM). (Cu(SalFn -2H)(Tol-bipy)2 ], [Cu(SalF4 -2H)(Ph-bipy)2 ] and [Cu(SalF3 -2H)(Ph-bipy)2 ]) were found active against the bacteria of S. aureus, S. aureus MRSA and their biofilms (MIC 2.4-41.4 μM). The most active compounds were tested for toxicity in vitro against human embryonic kidney (HEK-293) cells and in vivo experiments with CD-1 mice.
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Affiliation(s)
- Yanina Burgart
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, S. Kovalevskoi St., 22, Ekaterinburg, 620990, Russia
| | - Evgeny Shchegolkov
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, S. Kovalevskoi St., 22, Ekaterinburg, 620990, Russia
| | - Irina Shchur
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, S. Kovalevskoi St., 22, Ekaterinburg, 620990, Russia
| | - Dmitry Kopchuk
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, S. Kovalevskoi St., 22, Ekaterinburg, 620990, Russia.,Ural Federal University named after the First President of Russia B.N. Yeltsin, Mira St., 19, Ekaterinburg, 620002, Russia
| | - Natalia Gerasimova
- Ural Research Institute for Dermatology, Venereology and Immunopathology, Shcherbakova St., 8, Ekaterinburg, 620076, Russia
| | - Sophia Borisevich
- Ufa Institute of Chemistry of, Russian Academy of Science, Octyabrya St., 71, Ufa, 450078, Russia
| | - Natalia Evstigneeva
- Ural Research Institute for Dermatology, Venereology and Immunopathology, Shcherbakova St., 8, Ekaterinburg, 620076, Russia
| | - Grigory Zyryanov
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, S. Kovalevskoi St., 22, Ekaterinburg, 620990, Russia.,Ural Federal University named after the First President of Russia B.N. Yeltsin, Mira St., 19, Ekaterinburg, 620002, Russia
| | - Maria Savchuk
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, S. Kovalevskoi St., 22, Ekaterinburg, 620990, Russia.,Ural Federal University named after the First President of Russia B.N. Yeltsin, Mira St., 19, Ekaterinburg, 620002, Russia
| | - Maria Ulitko
- Ural Federal University named after the First President of Russia B.N. Yeltsin, Mira St., 19, Ekaterinburg, 620002, Russia
| | - Natalia Zilberberg
- Ural Research Institute for Dermatology, Venereology and Immunopathology, Shcherbakova St., 8, Ekaterinburg, 620076, Russia
| | - Nikolai Kungurov
- Ural Research Institute for Dermatology, Venereology and Immunopathology, Shcherbakova St., 8, Ekaterinburg, 620076, Russia
| | - Victor Saloutin
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, S. Kovalevskoi St., 22, Ekaterinburg, 620990, Russia
| | - Valery Charushin
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, S. Kovalevskoi St., 22, Ekaterinburg, 620990, Russia.,Ural Federal University named after the First President of Russia B.N. Yeltsin, Mira St., 19, Ekaterinburg, 620002, Russia
| | - Oleg Chupakhin
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, S. Kovalevskoi St., 22, Ekaterinburg, 620990, Russia.,Ural Federal University named after the First President of Russia B.N. Yeltsin, Mira St., 19, Ekaterinburg, 620002, Russia
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Huang HY, Ren QQ, Lai YH, Peng MY, Zhang J, Yang LT, Huang ZR, Chen LS. Metabolomics combined with physiology and transcriptomics reveals how Citrus grandis leaves cope with copper-toxicity. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 223:112579. [PMID: 34352583 DOI: 10.1016/j.ecoenv.2021.112579] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 07/20/2021] [Accepted: 07/28/2021] [Indexed: 06/13/2023]
Abstract
Limited data are available on metabolic responses of plants to copper (Cu)-toxicity. Firstly, we investigated Cu-toxic effects on metabolomics, the levels of free amino acids, NH4+-N, NO3--N, total nitrogen, total soluble proteins, total phenolics, lignin, reduced glutathione (GSH) and malondialdehyde, and the activities of nitrogen-assimilatory enzymes in 'Shatian' pummelo (Citrus grandis) leaves. Then, a conjoint analysis of metabolomics, physiology and transcriptomics was performed. Herein, 59 upregulated [30 primary metabolites (PMs) and 29 secondary metabolites (SMs)] and 52 downregulated (31 PMs and 21 SMs) metabolites were identified in Cu-toxic leaves. The toxicity of Cu to leaves was related to the Cu-induced accumulation of NH4+ and decrease of nitrogen assimilation. Metabolomics combined with physiology and transcriptomics revealed some adaptive responses of C. grandis leaves to Cu-toxicity, including (a) enhancing tryptophan metabolism and the levels of some amino acids and derivatives (tryptophan, phenylalanine, 5-hydroxy-l-tryptophan, 5-oxoproline and GSH); (b) increasing the accumulation of carbohydrates and alcohols and upregulating tricarboxylic acid cycle and the levels of some organic acids and derivatives (chlorogenic acid, quinic acid, d-tartaric acid and gallic acid o-hexoside); (c) reducing phospholipid (lysophosphatidylcholine and lysophosphatidylethanolamine) levels, increasing non-phosphate containing lipid [monoacylglycerol ester (acyl 18:2) isomer 1] levels, and inducing low-phosphate-responsive gene expression; and (d) triggering the biosynthesis of some chelators (total phenolics, lignin, l-trytamine, indole, eriodictyol C-hexoside, quercetin 5-O-malonylhexosyl-hexoside, N-caffeoyl agmatine, N'-p-coumaroyl agmatine, hydroxy-methoxycinnamate and protocatechuic acid o-glucoside) and vitamins and derivatives (nicotinic acid-hexoside, B1 and methyl nicotinate). Cu-induced upregulation of many antioxidants could not protect Cu-toxic leaves from oxidative damage. To conclude, our findings corroborated the hypothesis that extensive reprogramming of metabolites was carried out in Cu-toxic C. grandis leaves in order to cope with Cu-toxicity.
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Affiliation(s)
- Hui-Yu Huang
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Qian-Qian Ren
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yin-Hua Lai
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ming-Yi Peng
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jiang Zhang
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lin-Tong Yang
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zeng-Rong Huang
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Li-Song Chen
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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Mohan G, Sridhar G, Laxminarayana E, Chary MT. Synthesis and Anticancer Evaluation of N-(Pyridin-3-yl)benzamide Derivatives. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021090165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Malani A, Makwana A, Monapara J, Ahmad I, Patel H, Desai N. Synthesis, molecular docking, DFT study, and in vitro antimicrobial activity of some 4-(biphenyl-4-yl)-1,4-dihydropyridine and 4-(biphenyl-4-yl)pyridine derivatives. J Biochem Mol Toxicol 2021; 35:e22903. [PMID: 34459052 DOI: 10.1002/jbt.22903] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 07/28/2021] [Accepted: 08/20/2021] [Indexed: 12/18/2022]
Abstract
The evolution of microbial resistance necessitates the development of new antimicrobial drugs that are more effective than those currently on the market. To address this problem, we have prepared a series of novel 4-(biphenyl-4-yl)-1,4-dihydropyridine and 4-(biphenyl-4-yl)pyridine derivatives via Hantzsch reaction using nine different compounds containing active methylene group. IR, NMR, and mass spectra were used to determine the structures. Using ampicillin and griseofulvin as standards, the titled compounds were investigated for their antibacterial activity against different bacteria and fungi. Compounds 1f, 1g, 2f, and 2g have the best antibacterial activity against Gram-negative bacteria (minimum inhibitory concentration = 50 μg/ml), while 1f, 1h, 2g, and 2h have high antifungal activity against Candida albicans (minimum inhibitory concentration = 100 μg/ml). To gain a better understanding of the binding process and affinity for the bacterial Staphylococcus epidermidis protein, researchers used molecular docking and molecular mechanics, as well as the generalized Born model and solvent accessibility-based binding free energy. The active compounds 1g, 1h, and 2f have good docking scores of -5.575, -5.949, and -5.234, respectively, whereas compound 2c has the greatest docking score (-6.23). The HOMO-LUMO energy gap and molecular electrostatic potential were used to evaluate the reactivity of promising compounds, which were then associated with antibacterial efficacy.
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Affiliation(s)
- Alimamad Malani
- Department of Chemistry, St. Xavier's College (Autonomous), (Affiliated to Gujarat University) Navarangpura, Ahmedabad, India
| | - Atul Makwana
- Department of Chemistry, St. Xavier's College (Autonomous), (Affiliated to Gujarat University) Navarangpura, Ahmedabad, India
| | - Jahnvi Monapara
- Division of Medicinal Chemistry, Department of Chemistry (DST-FIST Sponsored & UGC NON-SAP), Mahatma Gandhi Campus, Maharaja Krishnakumarsinhji Bhavnagar University, Bhavnagar, India
| | - Iqrar Ahmad
- Division of Computer-Aided Drug Design, Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur (Dhule), Maharashtra, India
| | - Harun Patel
- Division of Computer-Aided Drug Design, Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur (Dhule), Maharashtra, India
| | - Nisheeth Desai
- Division of Medicinal Chemistry, Department of Chemistry (DST-FIST Sponsored & UGC NON-SAP), Mahatma Gandhi Campus, Maharaja Krishnakumarsinhji Bhavnagar University, Bhavnagar, India
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20
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Khan E. Pyridine Derivatives as Biologically Active Precursors; Organics and Selected Coordination Complexes. ChemistrySelect 2021. [DOI: 10.1002/slct.202100332] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ezzat Khan
- Department of Chemistry University of Malakand, Chakdara 18800, Lower Dir Khyber Pakhtunkhwa Pakistan
- Department of Chemistry, College of Science University of Bahrain Sakhir 32038 Bahrain
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21
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Andrejević TP, Aleksic I, Počkaj M, Kljun J, Milivojevic D, Stevanović NL, Nikodinovic-Runic J, Turel I, Djuran MI, Glišić BĐ. Tailoring copper(ii) complexes with pyridine-4,5-dicarboxylate esters for anti-Candida activity. Dalton Trans 2021; 50:2627-2638. [PMID: 33523054 DOI: 10.1039/d0dt04061d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Five novel copper(ii) complexes with pyridine-4,5-dicarboxylate esters as ligands, [Cu(NO3)(py-2tz)(H2O)3]NO3 (1), [Cu(NO3)2(py-2metz)(H2O)] (2), [Cu(NO3)2(py-2py)(H2O)]·H2O (3), [CuCl2(py-2tz)]2 (4) and [CuCl2(py-2metz)]n (5) (py-2tz is dimethyl 2-(thiazol-2-yl)pyridine-4,5-dicarboxylate, py-2metz is dimethyl 2-(4-methylthiazol-2-yl)pyridine-4,5-dicarboxylate and py-2py is dimethyl 2,2'-bipyridine-4,5-dicarboxylate), were synthesized and structurally characterized by different spectroscopic and electrochemical methods. The structure of these complexes was determined by single-crystal X-ray diffraction analysis, confirming the bidentate coordination mode of the corresponding pyridine-4,5-dicarboxylate ester to the Cu(ii) ion through the nitrogen atoms. The antimicrobial potential of copper(ii) complexes 1-5 was assessed against two bacterial and two Candida species. These complexes showed better growth inhibiting activity against Candida spp. with respect to the tested bacterial species, also being moderately toxic towards normal human lung fibroblast cells (MRC-5). Complexes 1 and 4 showed the greatest ability to inhibit the filamentation of C. albicans, which is an important process during fungal infection, and these two complexes efficiently inhibited the biofilm formation of C. albicans at subinhibitory concentrations. Complex 4 also successfully prevented the adhesion of C. albicans in an in vitro epithelial cell model. The mechanism of the antifungal activity of copper(ii) complexes 1-5 was studied through their interaction with ct-DNA, as one of the possible target biomolecules, by fluorescence spectroscopy and gel electrophoresis. Finally, the ability of these complexes to bind to bovine serum albumin (BSA) was studied by fluorescence emission spectroscopy.
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Affiliation(s)
- Tina P Andrejević
- University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia.
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Alizadeh A, Bagherinejad A. Synthesis of 2‐
O
‐Functionalized‐5‐salicyloyl Pyridine Derivatives Catalyzed by 2‐Mercaptobenzimidazole. ChemistrySelect 2020. [DOI: 10.1002/slct.202003748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Abdolali Alizadeh
- Department of Chemistry Tarbiat Modares University, P.O. Box 14115-175 Tehran Iran
| | - Akram Bagherinejad
- Department of Chemistry Tarbiat Modares University, P.O. Box 14115-175 Tehran Iran
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Patel R, Patel S, Kumhar D, Patel N, Patel A, Jadeja R, Patel N, Butcher R, Cortijo M, Herrero S. Two new copper(II) binuclear complexes with 2-[(E)-(pyridine-2yl-hydrazono)methyl]phenol: Molecular structures, quantum chemical calculations, cryomagnetic properties and catalytic activity. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114687] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Discovery of novel 2-aminonicotinonitrile derivatives with new potential autophagy activity. Future Med Chem 2020; 12:1399-1414. [PMID: 32705902 DOI: 10.4155/fmc-2019-0244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: To clarify the molecular mechanism of novel 2-aminonicotinonitrile autophagy enhancers, two series of novel 2-aminonicotinonitrile derivatives are synthesized and their structure-activity relationship and biological activity were analyzed. Results & methodology: Structure-activity relationship analysis revealed that substituents at C-4 and C-6 position of 7a contribute to enhance their autophagy-inducing activity, while C-5 position substituents have the opposite effect. The most promising compound 7g showed the strongest autophagy-inducing activity and better antiproliferative activity by inducing cell apoptosis and blocking cell cycle G1 arrest in SGC-7901 cells. Conclusion: The novel 2-aminonicotinonitrile autophagy enhancers were for the first time discovered and 7g might be a promising new autophagy enhancer with potential anticancer activity.
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Świderski G, Jabłońska-Trypuć A, Kalinowska M, Świsłocka R, Karpowicz D, Magnuszewska M, Lewandowski W. Spectroscopic, Theoretical and Antioxidant Study of 3d-Transition Metals (Co (II), Ni(II), Cu(II), Zn(II) Complexes with Cichoric Acid. MATERIALS 2020; 13:ma13143102. [PMID: 32664569 PMCID: PMC7412476 DOI: 10.3390/ma13143102] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/04/2020] [Accepted: 07/08/2020] [Indexed: 12/28/2022]
Abstract
Cichoric acid (CA) is a derivative of both caffeic acid and tartaric acid. It was isolated for the first time from Cichorium intybus L. (chicory) but it also occurs in significant amounts in Echinacea, particularly E. purpurea, dandelion leaves, basil, lemon balm and in aquatic plants, including algae and sea grasses. It has a wide spectrum of biological properties, including antioxidant, antiviral, anti-inflammatory and other. The work yielded cichoric acid complexes with selected transition metals, i.e., copper(II), nickel(II), zinc(II) and cobalt(II). In this work the dependency between the molecular structure and biological activity was discussed. The molecular structure was studied by means of infrared spectroscopy (Fourier transform infrared (FT-IR) Raman (FT-Raman)), electronic absorption spectroscopy (ultraviolet-visible (UV/VIS)) and theoretical calculations (density functional theory (DFT), Hartree-Fock (HF)). Understanding the mechanism of the effect of metals on the electronic system of ligands with biological importance will facilitate in the future the search for new, effective and natural antioxidants. The composition of the studied complexes in aqueous solutions was determined at a constant pH by the Job's method. Antioxidative properties of the tested compounds were determined using the ferric-reducing antioxidant power (FRAP), DPPH (2,2-diphenyl-1-picryl-hydrazyl-hydrate free radical method), cupric-reducing antioxidant capacity (CUPRAC) and Superoxide Dismutase Activity Assay (SOD).
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Affiliation(s)
- Grzegorz Świderski
- Department of Chemistry, Biology and Biotechnology, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland; (A.J.-T.); (M.K.); (R.Ś.); (D.K.); (M.M.)
- Correspondence: (G.Ś.); (W.L.)
| | - Agata Jabłońska-Trypuć
- Department of Chemistry, Biology and Biotechnology, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland; (A.J.-T.); (M.K.); (R.Ś.); (D.K.); (M.M.)
| | - Monika Kalinowska
- Department of Chemistry, Biology and Biotechnology, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland; (A.J.-T.); (M.K.); (R.Ś.); (D.K.); (M.M.)
| | - Renata Świsłocka
- Department of Chemistry, Biology and Biotechnology, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland; (A.J.-T.); (M.K.); (R.Ś.); (D.K.); (M.M.)
| | - Danuta Karpowicz
- Department of Chemistry, Biology and Biotechnology, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland; (A.J.-T.); (M.K.); (R.Ś.); (D.K.); (M.M.)
| | - Marta Magnuszewska
- Department of Chemistry, Biology and Biotechnology, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland; (A.J.-T.); (M.K.); (R.Ś.); (D.K.); (M.M.)
| | - Włodzimierz Lewandowski
- Department of Food Analysis, Institute of Agricultural and Food Biotechnology, Rakowiecka 36 Street, 02-532 Warsaw, Poland
- Correspondence: (G.Ś.); (W.L.)
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Karthikeyan S, Yue X, Festa AA, Voskressensky LG. Understanding the binding information of 1-imino-1,2-dihydropyrazino[1,2-a]indol-3(4H)-one in bovine serum albumin, 5-hydroxytryptamine receptor 1B and human carbonic anhydrase I: A biophysical approach. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112793] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Zabiulla, Nagesh Khadri M, Bushra Begum A, Sunil M, Khanum SA. Synthesis, docking and biological evaluation of thiadiazole and oxadiazole derivatives as antimicrobial and antioxidant agents. RESULTS IN CHEMISTRY 2020. [DOI: 10.1016/j.rechem.2020.100045] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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30
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Different coordination abilities of 1,7- and 4,7-phenanthroline in the reactions with copper(II) salts: Structural characterization and biological evaluation of the reaction products. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.114112] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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31
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Yang Z, Zhao Y, Li P, He Y. Design, synthesis, and insecticidal activity of novel isoxazole derivatives containing bisamide moiety. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3699] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zaibo Yang
- School of Chemistry and Chemical EngineeringQiannan Normal University for Nationalities Duyun People's Republic of China
| | - Yang Zhao
- Technology Center, China Tobacco Guizhou Industrial CO., LTD. Guiyang People's Republic of China
| | - Pei Li
- School of Chemistry and Chemical EngineeringQiannan Normal University for Nationalities Duyun People's Republic of China
- Qiandongnan Engineering and Technology Research Center for Comprehensive Utilization of National MedicineKaili University Kaili People's Republic of China
| | - Yinju He
- School of Chemistry and Chemical EngineeringQiannan Normal University for Nationalities Duyun People's Republic of China
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32
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Kollur SP, Castro JO, Frau J, Flores-Holgu´ın N, Shruthi G, Shivamallu C, Glossman-Mitnik D. Preparation, spectroscopic investigations and chemical reactivity properties of a new schiff base ligand and its copper (II) complexes. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.03.101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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The Use of Copper as an Antimicrobial Agent in Health Care, Including Obstetrics and Gynecology. Clin Microbiol Rev 2019; 32:32/4/e00125-18. [PMID: 31413046 DOI: 10.1128/cmr.00125-18] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Health care-associated infections (HAIs) are a global problem associated with significant morbidity and mortality. Controlling the spread of antimicrobial-resistant bacteria is a major public health challenge, and antimicrobial resistance has become one of the most important global problems in current times. The antimicrobial effect of copper has been known for centuries, and ongoing research is being conducted on the use of copper-coated hard and soft surfaces for reduction of microbial contamination and, subsequently, reduction of HAIs. This review provides an overview of the historical and current evidence of the antimicrobial and wound-healing properties of copper and explores its possible utility in obstetrics and gynecology.
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Identification and Characterization of a Novel pic Gene Cluster Responsible for Picolinic Acid Degradation in Alcaligenes faecalis JQ135. J Bacteriol 2019; 201:JB.00077-19. [PMID: 31160400 DOI: 10.1128/jb.00077-19] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 05/30/2019] [Indexed: 11/20/2022] Open
Abstract
Picolinic acid (PA) is a natural toxic pyridine derivative. Microorganisms can degrade and utilize PA for growth. However, the full catabolic pathway of PA and its physiological and genetic foundation remain unknown. In this study, we identified a gene cluster, designated picRCEDFB4B3B2B1A1A2A3, responsible for the degradation of PA from Alcaligenes faecalis JQ135. Our results suggest that PA degradation pathway occurs as follows: PA was initially 6-hydroxylated to 6-hydroxypicolinic acid (6HPA) by PicA (a PA dehydrogenase). 6HPA was then 3-hydroxylated by PicB, a four-component 6HPA monooxygenase, to form 3,6-dihydroxypicolinic acid (3,6DHPA), which was then converted into 2,5-dihydroxypyridine (2,5DHP) by the decarboxylase PicC. 2,5DHP was further degraded to fumaric acid through PicD (2,5DHP 5,6-dioxygenase), PicE (N-formylmaleamic acid deformylase), PicF (maleamic acid amidohydrolase), and PicG (maleic acid isomerase). Homologous pic gene clusters with diverse organizations were found to be widely distributed in Alpha-, Beta-, and Gammaproteobacteria Our findings provide new insights into the microbial catabolism of environmental toxic pyridine derivatives.IMPORTANCE Picolinic acid is a common metabolite of l-tryptophan and some aromatic compounds and is an important intermediate in organic chemical synthesis. Although the microbial degradation/detoxification of picolinic acid has been studied for over 50 years, the underlying molecular mechanisms are still unknown. Here, we show that the pic gene cluster is responsible for the complete degradation of picolinic acid. The pic gene cluster was found to be widespread in other Alpha-, Beta-, and Gammaproteobacteria These findings provide a new perspective for understanding the catabolic mechanisms of picolinic acid in bacteria.
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Antioxidative activity analyses of some pyridazine derivatives using computational methods. CHEMICAL PAPERS 2019. [DOI: 10.1007/s11696-019-00850-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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36
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Afsan Z, Roisnel T, Tabassum S, Arjmand F. Spectroscopic and single‐crystal X‐ray diffraction studies of enantiomeric copper(II) Schiff base one‐dimensional coordination polymers with 4‐(2‐aminoethyl)benzenesulfonamide appendage: Comprehensive biological evaluation (DNA binding, cleavage, superoxide dismutase mimetic activity, topoisomerase I inhibition and cytotoxicity). Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4958] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zeenat Afsan
- Department of ChemistryAligarh Muslim University Aligarh 202002 India
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes, UMR 6226Université de Rennes 1 Campus de Beaulieu Bâtiment 10B, Bureau 15335042 Rennes France
| | - Sartaj Tabassum
- Department of ChemistryAligarh Muslim University Aligarh 202002 India
| | - Farukh Arjmand
- Department of ChemistryAligarh Muslim University Aligarh 202002 India
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Wu WQ, Yang Z, Rudd PN, Shao Y, Dai X, Wei H, Zhao J, Fang Y, Wang Q, Liu Y, Deng Y, Xiao X, Feng Y, Huang J. Bilateral alkylamine for suppressing charge recombination and improving stability in blade-coated perovskite solar cells. SCIENCE ADVANCES 2019; 5:eaav8925. [PMID: 30873433 PMCID: PMC6408151 DOI: 10.1126/sciadv.aav8925] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 01/28/2019] [Indexed: 05/19/2023]
Abstract
The power conversion efficiencies (PCEs) of perovskite solar cells (PSCs) are already higher than that of other thin film technologies, but laboratory cell-fabrication methods are not scalable. Here, we report an additive strategy to enhance the efficiency and stability of PSCs made by scalable blading. Blade-coated PSCs incorporating bilateral alkylamine (BAA) additives achieve PCEs of 21.5 (aperture, 0.08 cm2) and 20.0% (aperture, 1.1 cm2), with a record-small open-circuit voltage deficit of 0.35 V under AM1.5G illumination. The stabilized PCE reaches 22.6% under 0.3 sun. Anchoring monolayer bilateral amino groups passivates the defects at the perovskite surface and enhances perovskite stability by exposing the linking hydrophobic alkyl chain. Grain boundaries are reinforced by BAA and are more resistant to mechanical bending and electron beam damage. BAA improves the device shelf lifetime to >1000 hours and operation stability to >500 hours under light, with 90% of the initial efficiency retained.
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Erdemir US, Arslan H, Guleryuz G, Yaman M, Gucer S. Manganese tolerance in Verbascum olympicum Boiss. affecting elemental uptake and distribution: changes in nicotinic acid levels under stress conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:29129-29143. [PMID: 30112644 DOI: 10.1007/s11356-018-2924-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 08/06/2018] [Indexed: 05/27/2023]
Abstract
A multielemental determination methodology in conjunction with an organic acid analysis that were supplemented with other stress parameters and an ultrastructural analysis used herein to study Verbascum olympicum Boiss. (Scrophulariaceae) under Mn stress. Uptake and accumulation characteristics of B, Cu, Fe, Mn, Mo, and Zn were evaluated in 8-week-old seedlings grown in Hoagland's nutrient solution and exposed to 5 (CK), 50, and 200 μM MnSO4 for 7 days. Hydrogen peroxide levels were determined to evaluate oxidative stress, and changes in compatible substance levels (total phenolic contents, glutathione and glutathione disulfide levels) were determined to assess antioxidant defense mechanisms. The distribution of manganese on the root surface was characterized by scanning electron microscopy images and energy-dispersive X-ray spectroscopy analysis. The levels of nicotinic acid, which is involved in nicotinamide adenine dinucleotide biosynthesis, were determined in roots and leaves to assess tolerance mechanisms. V. olympicum exhibited the ability to cope with oxidative stress originating from excessive Mn, while increased Mn concentrations were observed in both roots and leaves. The translocation factor of B was the most affected among other studied elements under the experimental conditions. Total nicotinic acid levels exhibited a trend of reduction in the roots and leaves, which could be attributed to the appropriate metabolic progress associated with oxidative stress based on the nicotinamide adenine dinucleotide cycle that may reach glutathione in response to manganese stress during plant growth.
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Affiliation(s)
- Umran Seven Erdemir
- Department of Chemistry, Faculty of Arts and Sciences, Bursa Uludag University, Bursa, Turkey.
| | - Hulya Arslan
- Department of Biology, Faculty of Arts and Sciences, Bursa Uludag University, Bursa, Turkey
| | - Gurcan Guleryuz
- Department of Biology, Faculty of Arts and Sciences, Bursa Uludag University, Bursa, Turkey
| | - Mehmet Yaman
- Department of Chemistry, Faculty of Science, Firat University, Elazig, Turkey
| | - Seref Gucer
- Department of Chemistry, Faculty of Arts and Sciences, Bursa Uludag University, Bursa, Turkey
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Soliman HA, Kotb ER, El-Bayaa MN, Kutkat OM, Abdel-Magied FME. Synthesis and Anti-H5N1 Activity of Substituted Pyridine Glycosides and (Oxadiazolyl)oxymethylpyridine Acyclic C-Nucleoside Analogues. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218040291] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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40
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Islas MS, Martínez Medina JJ, Piro OE, Echeverría GA, Ferrer EG, Williams PAM. Comparisons of the spectroscopic and microbiological activities among coumarin-3-carboxylate, o-phenanthroline and zinc(II) complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 198:212-221. [PMID: 29547823 DOI: 10.1016/j.saa.2018.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 02/28/2018] [Accepted: 03/02/2018] [Indexed: 05/08/2023]
Abstract
Coumarins (2H-chromen-2-one) are oxygen-containing heterocyclic compounds that belong to the benzopyranones family. In this work we have synthesized different coordination complexes with coumarin-3-carboxylic acid (HCCA), o-phenanthroline (phen) and zinc(II). In the reported [Zn(CCA)2(H2O)2] complex, coumarin-3-carboxylate (CCA) is acting as a bidentate ligand while in the two prepared complexes, [Zn(phen)3]CCA(NO3) (obtained as a single crystal) and [Zn(CCA)2phen].4H2O, CCA is acting as a counterion of the complex cation [Zn(phen)3]+2 or coordinated to the metal center along with phen, respectively. These compounds were characterized on the basis of elemental analysis and thermogravimetry. NMR, FTIR and Raman spectroscopies of the compounds and the CCA potassium salt (KCCA) allow to determine several similarities and differences among them. Finally, their behavior against alkaline phosphatase enzyme and their antimicrobial activities were also measured.
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Affiliation(s)
- María S Islas
- Centro de Química Inorgánica (CEQUINOR), FCE, UNLP, Bv. 120 n° 1465, 1900 La Plata, Argentina
| | | | - Oscar E Piro
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP(CONICET, CCT La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Gustavo A Echeverría
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP(CONICET, CCT La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR), FCE, UNLP, Bv. 120 n° 1465, 1900 La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR), FCE, UNLP, Bv. 120 n° 1465, 1900 La Plata, Argentina.
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Zheng RC, Jin JQ, Wu ZM, Tang XL, Jin LQ, Zheng YG. Biocatalytic hydrolysis of chlorinated nicotinamides by a superior AS family amidase and its application in enzymatic production of 2-chloronicotinic acid. Bioorg Chem 2018; 76:81-87. [DOI: 10.1016/j.bioorg.2017.11.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 11/05/2017] [Accepted: 11/06/2017] [Indexed: 12/17/2022]
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42
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Snider VG, Pella BJ, Mukherjee A. Synthesis, characterization, and reactivity of copper complexes supported by the TPMEN ligand framework. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.09.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kalita U, Kaping S, Nongkynrih R, Boiss I, Singha LI, Vishwakarma JN. Design, synthesis, structure elucidation, and biological activities of 3-(substituted amino)-1-(pyridin-4-yl)propenones and 5-isonicotinoyl-1,2,3,4-tetrahydropyrimidine–adamantane hybrids. MONATSHEFTE FUR CHEMIE 2017. [DOI: 10.1007/s00706-017-2020-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Ghattas AEBAG, Khodairy A, Moustafa HM, Hussein BRM, Farghaly MM, Aboelez MO. Synthesis, in vitro Antibacterial and in vivo Anti-Inflammatory Activity of Some New Pyridines. Pharm Chem J 2017. [DOI: 10.1007/s11094-017-1670-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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45
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Zuo L, Guo H, deQuilettes DW, Jariwala S, De Marco N, Dong S, DeBlock R, Ginger DS, Dunn B, Wang M, Yang Y. Polymer-modified halide perovskite films for efficient and stable planar heterojunction solar cells. SCIENCE ADVANCES 2017; 3:e1700106. [PMID: 28845446 PMCID: PMC5567759 DOI: 10.1126/sciadv.1700106] [Citation(s) in RCA: 203] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 08/01/2017] [Indexed: 05/19/2023]
Abstract
The solution processing of polycrystalline perovskite films introduces trap states that can adversely affect their optoelectronic properties. Motivated by the use of small-molecule surfactants to improve the optoelectronic performance of perovskites, we demonstrate the use of polymers with coordinating groups to improve the performance of solution-processed semiconductor films. The use of these polymer modifiers results in a marked change in the electronic properties of the films, as measured by both carrier dynamics and overall device performance. The devices grown with the polymer poly(4-vinylpyridine) (PVP) show significantly enhanced power conversion efficiency from 16.9 ± 0.7% to 18.8 ± 0.8% (champion efficiency, 20.2%) from a reverse scan and stabilized champion efficiency from 17.5 to 19.1% [under a bias of 0.94 V and AM (air mass) 1.5-G, 1-sun illumination over 30 min] compared to controls without any passivation. Treating the perovskite film with PVP enables a VOC of up to 1.16 V, which is among the best reported for a CH3NH3PbI3 perovskite solar cell and one of the lowest voltage deficits reported for any perovskite to date. In addition, perovskite solar cells treated with PVP show a long shelf lifetime of up to 90 days (retaining 85% of the initial efficiency) and increased by a factor of more than 20 compared to those without any polymer (degrading to 85% after ~4 days). Our work opens up a new class of chemical additives for improving perovskite performance and should pave the way toward improving perovskite solar cells for high efficiency and stability.
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Affiliation(s)
- Lijian Zuo
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Hexia Guo
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Dane W. deQuilettes
- Department of Chemistry, University of Washington, Box 351700, Seattle, WA 98195–1700, USA
| | - Sarthak Jariwala
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
| | - Nicholas De Marco
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Shiqi Dong
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Ryan DeBlock
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - David S. Ginger
- Department of Chemistry, University of Washington, Box 351700, Seattle, WA 98195–1700, USA
| | - Bruce Dunn
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Mingkui Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, P.R. China
- Corresponding author. (M.W.); (Y.Y.)
| | - Yang Yang
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Corresponding author. (M.W.); (Y.Y.)
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Kalinowska-Lis U, Szabłowska-Gadomska I, Lisowska K, Ochocki J, Małecki M, Felczak A. Cytotoxic and Antimicrobial Properties of Copper(II) Complexes of Pyridine and Benzimidazole Derivatives. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700115] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Urszula Kalinowska-Lis
- Department of Cosmetic Raw Materials Chemistry; Medical University of Lodz; Muszyńskiego 1 90-151 Łódź Poland
| | - Ilona Szabłowska-Gadomska
- Department of Applied Pharmacy and Bioengineering; Medical University of Warsaw; Banacha 1 02-097 Warsaw Poland
| | - Katarzyna Lisowska
- Department of Industrial Microbiology and Biotechnology; Faculty of Biology and Environmental Protection; University of Lodz; 12/16 Banacha Street 90-237 Łódź Poland
| | - Justyn Ochocki
- Department of Bioinorganic Chemistry; Medical University of Lodz; Muszyńskiego 1 90-151 Łódź Poland
| | - Maciej Małecki
- Department of Applied Pharmacy and Bioengineering; Medical University of Warsaw; Banacha 1 02-097 Warsaw Poland
| | - Aleksandra Felczak
- Department of Industrial Microbiology and Biotechnology; Faculty of Biology and Environmental Protection; University of Lodz; 12/16 Banacha Street 90-237 Łódź Poland
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Patel R, Singh YP, Singh Y, Butcher RJ, Jasinski JP. Syntheses, single crystal structures, DFT and antioxidant superoxide dismutase studies of some new mono-/binuclear copper(II) complexes. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.03.054] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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48
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Mohamed Asath R, Premkumar S, Mathavan T, Milton Franklin Benial A. Vibrational spectroscopic, molecular docking and quantum chemical studies on 6-aminonicotinamide. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.058] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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49
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Zayed EM, Zayed MA, Fahim AM, El-Samahy FA. Synthesis of novel macrocyclic Schiff's-base and its complexes having N2
O2
group of donor atoms. Characterization and anticancer screening are studied. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3694] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Ehab M. Zayed
- Green Chemistry Department; Research Centre; 33 EL Bohouthst (former EL Tahrirst), Dokki 12622 Giza Egypt
| | - Mohamed A. Zayed
- Chemistry Department, Faculty of Science; Cairo University; 12613 Giza Egypt
| | - Asmaa M. Fahim
- Green Chemistry Department; Research Centre; 33 EL Bohouthst (former EL Tahrirst), Dokki 12622 Giza Egypt
| | - Fatma A. El-Samahy
- Green Chemistry Department; Research Centre; 33 EL Bohouthst (former EL Tahrirst), Dokki 12622 Giza Egypt
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50
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Elshaarawy RF, Eldeen IM, Hassan EM. Efficient synthesis and evaluation of bis-pyridinium/bis-quinolinium metallosalophens as antibiotic and antitumor candidates. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.08.059] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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