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Cores Á, Carmona-Zafra N, Clerigué J, Villacampa M, Menéndez JC. Quinones as Neuroprotective Agents. Antioxidants (Basel) 2023; 12:1464. [PMID: 37508002 PMCID: PMC10376830 DOI: 10.3390/antiox12071464] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/12/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Quinones can in principle be viewed as a double-edged sword in the treatment of neurodegenerative diseases, since they are often cytoprotective but can also be cytotoxic due to covalent and redox modification of biomolecules. Nevertheless, low doses of moderately electrophilic quinones are generally cytoprotective, mainly due to their ability to activate the Keap1/Nrf2 pathway and thus induce the expression of detoxifying enzymes. Some natural quinones have relevant roles in important physiological processes. One of them is coenzyme Q10, which takes part in the oxidative phosphorylation processes involved in cell energy production, as a proton and electron carrier in the mitochondrial respiratory chain, and shows neuroprotective effects relevant to Alzheimer's and Parkinson's diseases. Additional neuroprotective quinones that can be regarded as coenzyme Q10 analogues are idobenone, mitoquinone and plastoquinone. Other endogenous quinones with neuroprotective activities include tocopherol-derived quinones, most notably vatiquinone, and vitamin K. A final group of non-endogenous quinones with neuroprotective activity is discussed, comprising embelin, APX-3330, cannabinoid-derived quinones, asterriquinones and other indolylquinones, pyrroloquinolinequinone and its analogues, geldanamycin and its analogues, rifampicin quinone, memoquin and a number of hybrid structures combining quinones with amino acids, cholinesterase inhibitors and non-steroidal anti-inflammatory drugs.
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Affiliation(s)
- Ángel Cores
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, Plaza de Ramón y Cajal sn, 28040 Madrid, Spain
| | - Noelia Carmona-Zafra
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, Plaza de Ramón y Cajal sn, 28040 Madrid, Spain
| | - José Clerigué
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, Plaza de Ramón y Cajal sn, 28040 Madrid, Spain
| | - Mercedes Villacampa
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, Plaza de Ramón y Cajal sn, 28040 Madrid, Spain
| | - J Carlos Menéndez
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, Plaza de Ramón y Cajal sn, 28040 Madrid, Spain
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Cu (II)-coordinated silica based mesoporous inorganic-organic hybrid material: synthesis, characterization and evaluation for drug delivery, antibacterial, antioxidant and anticancer activities. JOURNAL OF POLYMER RESEARCH 2023. [DOI: 10.1007/s10965-023-03458-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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3
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Yang QZ, Li HC, Guo ZB, Liao YZ, Liu RX, Liu YC, Liang H. The copper(II) complex of dantron showed therapeutic effect on bacterial gill-rot disease in tilapia infected by Flavobacterium columnar. J Inorg Biochem 2022; 232:111841. [DOI: 10.1016/j.jinorgbio.2022.111841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 04/13/2022] [Accepted: 04/16/2022] [Indexed: 10/18/2022]
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Li YL, Zhu XM, Chen NF, Chen ST, Yang Y, Liang H, Chen ZF. Anticancer activity of ruthenium(II) plumbagin complexes with polypyridyl as ancillary ligands via inhibiting energy metabolism and GADD45A-mediated cell cycle arrest. Eur J Med Chem 2022; 236:114312. [PMID: 35421660 DOI: 10.1016/j.ejmech.2022.114312] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/10/2022] [Accepted: 03/19/2022] [Indexed: 12/31/2022]
Abstract
To study the antitumor activity and action mechanism of Ru(II) polypyridyl plumbagin (PLN) complexes, four complexes [Ru(PLN)(DMSO)2]Cl (Ru1), [Ru(bpy)2(PLN)](PF6) (bpy is bipyridine) (Ru2), [Ru(phen)2(PLN)](PF6) (phen is 1,10-phenanthroline) (Ru3), and [Ru(DIP)2(PLN)](PF6) (DIP is 4,7-diphenyl-1,10-phenanthroline) (Ru4) were obtained and fully characterized. Lipophilicity, cellular uptake and cytotoxicity of these Ru(II) complexes are in the order of: Ru1<Ru2<Ru3<Ru4. The ancillary polypyridyl ligands affected the bioactivity and action mechanisms of these Ru(II) complexes. Ru3 and Ru4 inhibited energy metabolism by severely impairing mitochondrial respiration and glycolysis processes. Moreover, Ru3 and Ru4 induced DNA damage and the increased expression of GADD45A, which led to cell cycle arrest in G0/G1 phase in MGC-803 cells, while the inactivation of GADD45A attenuated these effects; however, Ru3 or Ru4-induced GADD45A did not affect cell apoptosis. Further studies revealed that Ru3 and Ru4 induced ROS-dependent and caspase-dependent apoptotic cell death by mitochondrial dysfunction, and Ru4 displayed higher potency than Ru3. The in vivo results in MGC-803 xenograft nude mice model also confirmed that Ru4 obviously inhibited tumor growth. Ru4 is a promising candidate to be developed as a chemotherapeutic agent.
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Affiliation(s)
- Yu-Lan Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China
| | - Xiao-Min Zhu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China
| | - Nan-Feng Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China
| | - Shao-Ting Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China
| | - Yang Yang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China
| | - Hong Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China.
| | - Zhen-Feng Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China.
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Beigmohamadi M, Movafeghi A, Jafari S, Sharafi A. Potential of the genetically transformed root cultures ofPlumbago europaeafor biomass and plumbagin production. Biotechnol Prog 2020; 36:e2905. [DOI: 10.1002/btpr.2905] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/26/2019] [Accepted: 09/08/2019] [Indexed: 11/10/2022]
Affiliation(s)
| | - Ali Movafeghi
- Faculty of Natural ScienceUniversity of Tabriz Tabriz Iran
| | - Samineh Jafari
- Pharmacognosy Department, School of PharmacyZanjan University of Medical Sciences Zanjan Iran
| | - Ali Sharafi
- Zanjan Applied Pharmacology Research Center, School of PharmacyZanjan University of Medical Sciences Zanjan Iran
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Adusei EBA, Adosraku RK, Oppong-Kyekyeku J, Amengor CDK, Jibira Y. Resistance Modulation Action, Time-Kill Kinetics Assay, and Inhibition of Biofilm Formation Effects of Plumbagin from Plumbago zeylanica Linn. J Trop Med 2019; 2019:1250645. [PMID: 31885632 PMCID: PMC6899278 DOI: 10.1155/2019/1250645] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 11/04/2019] [Indexed: 11/20/2022] Open
Abstract
Antimicrobial resistance (AMR) is a threat to the prevention and treatment of the increasing range of infectious diseases. There is therefore the need for renewed efforts into antimicrobial discovery and development to combat the menace. The antimicrobial activity of plumbagin isolated from roots of Plumbago zeylanica against selected organisms was evaluated for resistance modulation antimicrobial assay, time-kill kinetics assay, and inhibition of biofilm formation. The minimum inhibitory concentrations (MICs) of plumbagin and standard drugs were determined via the broth microdilution method to be 0.5 to 8 μg/mL and 0.25-128 μg/mL, respectively. In the resistance modulation study, MICs of the standard drugs were redetermined in the presence of subinhibitory concentration of plumbagin (4 μg/mL), and plumbagin was found to either potentiate or reduce the activities of these standard drugs with the highest potentiation recorded up to 12-folds for ketoconazole against Candida albicans. Plumbagin was found to be bacteriostatic and fungistatic from the time-kill kinetics study. Plumbagin demonstrated strong inhibition of biofilm formation activity at concentrations of 128, 64, and 32 μg/mL against the test microorganisms compared with ciprofloxacin. Plumbagin has been proved through this study to be a suitable lead compound in antimicrobial resistance drug development.
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Affiliation(s)
- Emmanuel B. A. Adusei
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Reimmel K. Adosraku
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - James Oppong-Kyekyeku
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Cedric D. K. Amengor
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Health and Allied Sciences, Ho, Ghana
| | - Yakubu Jibira
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
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Comparison of the Effect of Native 1,4-Naphthoquinones Plumbagin, Menadione, and Lawsone on Viability, Redox Status, and Mitochondrial Functions of C6 Glioblastoma Cells. Nutrients 2019; 11:nu11061294. [PMID: 31181639 PMCID: PMC6628372 DOI: 10.3390/nu11061294] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 05/29/2019] [Accepted: 06/05/2019] [Indexed: 12/17/2022] Open
Abstract
Background: 1,4-naphthoquinones, especially juglone, are known for their anticancer activity. However, plumbagin, lawsone, and menadione have been less investigated for these properties. Therefore, we aimed to determine the effects of plumbagin, lawsone, and menadione on C6 glioblastoma cell viability, ROS production, and mitochondrial function. Methods: Cell viability was assessed spectrophotometrically using metabolic activity method, and by fluorescent Hoechst/propidium iodide nuclear staining. ROS generation was measured fluorometrically using DCFH-DA. Oxygen uptake rates were recorded by the high-resolution respirometer Oxygraph-2k. Results: Plumbagin and menadione displayed highly cytotoxic activity on C6 cells (IC50 is 7.7 ± 0.28 μM and 9.6 ± 0.75 μM, respectively) and caused cell death by necrosis. Additionally, they increased the amount of intracellular ROS in a concentration-dependent manner. Moreover, even at very small concentrations (1–3 µM), these compounds significantly uncoupled mitochondrial oxidation from phosphorylation impairing energy production in cells. Lawsone had significantly lower viability decreasing and mitochondria-uncoupling effect, and exerted strong antioxidant activity. Conclusions: Plumbagin and menadione exhibit strong prooxidant, mitochondrial oxidative phosphorylation uncoupling and cytotoxic activity. In contrast, lawsone demonstrates a moderate effect on C6 cell viability and mitochondrial functions, and possesses strong antioxidant properties.
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Beigmohamadi M, Movafeghi A, Sharafi A, Jafari S, Danafar H. Cell Suspension Culture of Plumbago europaea L. Towards Production of Plumbagin. IRANIAN JOURNAL OF BIOTECHNOLOGY 2019; 17:e2169. [PMID: 31457059 PMCID: PMC6697843 DOI: 10.21859/ijb.2169] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Plumbagin is as an important bioactive secondary metabolite found in the roots of Plumbago spp. The only one species, Plumbago europaea L., grows wild in Iran. The therapeutic use of plumbagin is limited due to its insufficient supply from the natural sources as the plants grow slowly and take several years to produce quality roots. OBJECTIVES To develop an efficient protocol for the establishment of callus and cell suspension cultures of P. europaea and to evaluate production of plumbagin in callus and cell suspension cultures of P. europaea for the first time. MATERIAL AND METHODS Stems and leaves explants were cultured on agar solidified (7% w/v) MS media, supplemented with different combination of 2, 4-D and Kin or 6-Benzylaminopurin (BA) for callus induction. The rapid growing calli were cultured in liquid Murashige and Skoog (MS) media in agitated condition for establishing cell suspension cultures of P. europaea. Moreover, the effects of light and dark conditions on the cell growth, cell viability and plumbagin production in cell suspension cultures of P. europaea were assessed. RESULTS Friable calli were successfully induced using stem segments of P. europaea in semisolid MS medium supplemented with 1 mg.L-1 2, 4-Dichlorophenoxy acetic acid (2, 4-D) and 0.5 mg.L-1of kinetin (Kin). Optimal cell growth was obtained when the cells were grown in MS liquid media supplemented with 1 mg.L-1 2, 4-D and 0.5 mg.L-1 kinetin with an initial cell density of ~3×105 cells per ml incubated in the dark at 25 ± 1 °C. Growth curve revealed that the maximum cell growth rate (14.83×105 cells per ml) achieved on the day 18 and the highest plumbagin content (0.9 mg.g-1 Dry Cell Weight (DCW)) in the cells was obtained at the late exponential phase under dark condition which determined by High Performance Liquid Chromatography (HPLC) technique. Based on the obtained results, cell viability remained around 82.73% during the 18 days of cell culture in darkness. These suspension cultures showed continuous and stable production of plumbagin. CONCLUSIONS Our study suggests that cell suspension cultures of P. europaea represent an effective system for biosynthesis and production of plumbagin as a valuable bioactive compound.
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Affiliation(s)
| | - Ali Movafeghi
- Faculty of Natural Science, University of Tabriz, Tabriz, Iran
| | - Ali Sharafi
- Zanjan Applied Pharmacology Research Center, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Samineh Jafari
- Pharmacognosy Department, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Hossein Danafar
- Zanjan Pharmaceutical Biotechnology Research Center, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
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Johnson P, Loganathan C, Krishnan V, Sakayanathan P, Raji V, Vijayan S, Sathishkumar P, Murugesan K, Palvannan T. Plant extract as environmental-friendly green catalyst for the reduction of hexavalent chromium in tannery effluent. ENVIRONMENTAL TECHNOLOGY 2018; 39:1376-1383. [PMID: 28488473 DOI: 10.1080/09593330.2017.1329355] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 05/07/2017] [Indexed: 06/07/2023]
Abstract
The aqueous extract of various plants like Coriandrum sativum (AECS), Alternanthera tenella colla (AEAT), Spermacoce hispida (AESH) and Mollugo verticillata (AEMV) was studied for its hexavalent chromium (CrVI) reduction property. Even though antioxidant activity was present, AEAT, AESH and AEMV did not reduce CrVI. AECS showed rapid and dose-dependent CrVI reduction. The efficient reduction of 50 mg/L of CrVI using AECS was attained in the presence of 250 µg/mL of starting plant material, incubating the reaction mixture at pH 2, 30°C and agitation at 190 rpm. Under such conditions, about 40 mg/L of CrVI was reduced at 3 h of incubation. FT-IR analysis revealed the involvement of phenols, alcohols, alpha-hydroxy acid and flavonoids present in the AECS for the CrVI reduction. These results indicate that not all the plant extracts with rich antioxidants are capable of reducing CrVI. Using the conditions standardized in the present study, AECS reduced about 80% of CrVI present in the tannery effluent. These results signify the application of AECS as an eco-friendly method in the wastewater treatment.
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Affiliation(s)
- Preethi Johnson
- a Department of Biochemistry , Periyar University , Salem , India
| | | | - Vennila Krishnan
- a Department of Biochemistry , Periyar University , Salem , India
| | | | - Vijayan Raji
- a Department of Biochemistry , Periyar University , Salem , India
| | - Sudha Vijayan
- a Department of Biochemistry , Periyar University , Salem , India
| | - Palanivel Sathishkumar
- b Centre for Environmental Sustainability and Water Security (IPASA), Research Institute for Sustainable Environment (RISE) , Universiti Teknologi Malaysia , Skudai , Malaysia
| | - Kumarasamy Murugesan
- c Department of Environmental Science , Periyar University , Salem , Tamil Nadu , India
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Guo YX, Liu L, Yan DZ, Guo JP. Plumbagin prevents osteoarthritis in human chondrocytes through Nrf-2 activation. Mol Med Rep 2017; 15:2333-2338. [DOI: 10.3892/mmr.2017.6234] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Accepted: 11/23/2016] [Indexed: 11/06/2022] Open
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Nair RS, Potti ME, Thankappan R, Chandrika SK, Kurup MRP, Srinivas P. Molecular trail for the anticancer behavior of a novel copper carbohydrazone complex in BRCA1 mutated breast cancer. Mol Carcinog 2017; 56:1501-1514. [PMID: 28052399 DOI: 10.1002/mc.22610] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/28/2016] [Accepted: 12/31/2016] [Indexed: 01/25/2023]
Abstract
Novel chelated metal complexes were synthesized from carbohydrazones to thiocarbohydrazones using metal-based drug designing platforms and their combination effect with Pb, a naphthaquinone were analyzed for anticancer activity in breast cancer cell lines. A panel of BRCA1 wild-type and mutated breast cancer cells: MCF-7 (BRCA1+ /ER+ ), MDA-MB-231 (BRCA1+ /ERα- ), HCC-1937 (BRCA1- /ERα- ), HCC1937/wt BRCA1, MX1 (BRCA1- /ERα- ), and MDA-MB-436 (BRCA1- /ERα- ) were screened for anti-cancer activity. Cu2 (HL)(HSO4 ) · H2 O]SO4 · 6 H2 O (CS2) is the most potent anticancer agent among the copper carbohydrazone and thiocarbohydrazone complexes analyzed in this study. It can be suggested that the presence of sulphate, as pharmacologically active centre, can induce cytotoxicity more effectively when compared to chlorine, bromine, perchlorate, and methanol. This is the first report demonstrating that CS2 can bind to DNA by hindering BamH1 activity and could induce DNA double strand breaks as evidenced by γ-H2AX expression. In addition to this, CS2 could also act as a Topo II inhibitor at a much lower concentration than etoposide and induce apoptosis, making it a potent anticancer agent. In combination with Pb, a potent ROS inducer, CS2 could induce synergistic anti-cancer activity in HR/ BRCA1 defective breast cancer cells. This is the first study reporting the mechanism involved in the induction of apoptosis for a metal chelated copper carbohydrazone complex and its combination effects with Pb in HR defective, BRCA1 mutated breast cancer cells.
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Affiliation(s)
- Rakesh Sathish Nair
- Cancer Research Program, Rajiv Gandhi Centre for Biotechnology, Thycaud, Thiruvananthapuram, Kerala, India
| | - Manoj Easwaran Potti
- Department of Applied Chemistry, Cochin University of Science and Technology, Kochin, Kerala, India
| | - Ratheeshkumar Thankappan
- Cancer Research Program, Rajiv Gandhi Centre for Biotechnology, Thycaud, Thiruvananthapuram, Kerala, India
| | | | | | - Priya Srinivas
- Cancer Research Program, Rajiv Gandhi Centre for Biotechnology, Thycaud, Thiruvananthapuram, Kerala, India
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Novel Fe II and Co II Complexes of Natural Product Tryptanthrin: Synthesis and Binding with G-Quadruplex DNA. Bioinorg Chem Appl 2016; 2016:5075847. [PMID: 27698647 PMCID: PMC5029049 DOI: 10.1155/2016/5075847] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 07/12/2016] [Accepted: 07/27/2016] [Indexed: 11/26/2022] Open
Abstract
Tryptanthrin is one of the most important members of indoloquinoline alkaloids. We obtained this alkaloid from Isatis. Two novel FeII and CoII complexes of tryptanthrin were first synthesized. Single-crystal X-ray diffraction analyses show that these complexes display distorted four-coordinated tetrahedron geometry via two heterocyclic nitrogen and oxygen atoms from tryptanthrin ligand. Binding with G-quadruplex DNA properties revealed that both complexes were found to exhibit significant interaction with G-quadruplex DNA. This study may potentially serve as the basis of future rational design of metal-based drugs from natural products that target the G-quadruplex DNA.
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Chaweeborisuit P, Suriyonplengsaeng C, Suphamungmee W, Sobhon P, Meemon K. Nematicidal effect of plumbagin on Caenorhabditis elegans: a model for testing a nematicidal drug. ACTA ACUST UNITED AC 2016; 71:121-31. [PMID: 27140303 DOI: 10.1515/znc-2015-0222] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Accepted: 04/03/2016] [Indexed: 11/15/2022]
Abstract
Plumbagin, (5-hydroxy-2-methyl-1,4-naphthoquinone), a natural substance found in the roots of plant species in the genus Plumbago, has been used as a traditional medicine against many diseases. In this study, Caenorhabditis elegans was used as a model for testing the anthelmintic effect of plumbagin. The compound exhibited a nematicidal effect against all stages of C. elegans: L4 was least susceptible, while L1 was most susceptible to plumbagin with an LC(50) of 220 and 156 μM, respectively. Plumbagin inhibited C. elegans development from L1 to adult stages with an IC(50) of 235 μM, and body length was also reduced at concentrations of 25 and 50 μg/ml. Brood sizes decreased from 203±6 to 43±6 and 18±3 eggs per hatch in plumbagin-treated worms at 10, 25, 50 μg/ml, respectively. Furthermore, plumbagin was lethal to strains resistant to the nematicides levamisole, albendazole, and ivermectin, indicating that it possesses a strong and unique nematicidal action. Plumbagin decreased the number of mitochondria in hypodermal and intestinal cells and body wall muscles and damaged the ultrastructure of these tissues. Taken together, plumbagin may be a new drug against parasitic nematodes.
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Synthesis of Cr(III)-morin complex: characterization and antioxidant study. ScientificWorldJournal 2014; 2014:845208. [PMID: 24688439 PMCID: PMC3928855 DOI: 10.1155/2014/845208] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 10/24/2013] [Indexed: 11/18/2022] Open
Abstract
The complex formation between Cr(III) and morin was carried out in methanol and confirmed by analytical characterization using UV-Vis, IR, 1H NMR, and TG-DTA. UV-Vis shows significant bathochromic shift in benzoyl upon coordination as well as IR well illustrates the peak shift of C=O group and formation of a O–Cr(III) bond. Likewise, 1H NMR studies clarify that Cr(III) metal ion replaces the 5OH proton hence; 5-hydroxy-4-keto site is employed by morin in chelation to form six-membered stable ring system out of three available chelating sites. In addition, TG-DTA denotes the presence of coordinated and crystalline water molecules. The melting point of the complex was found to be 389°C by DSC. In addition, Cr(III)-morin complex was found to be a more potent antioxidant than morin as evaluated by DPPH• and FRAP methods.
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Ghosh S, Derle A, Ahire M, More P, Jagtap S, Phadatare SD, Patil AB, Jabgunde AM, Sharma GK, Shinde VS, Pardesi K, Dhavale DD, Chopade BA. Phytochemical analysis and free radical scavenging activity of medicinal plants Gnidia glauca and Dioscorea bulbifera. PLoS One 2013; 8:e82529. [PMID: 24367520 PMCID: PMC3867356 DOI: 10.1371/journal.pone.0082529] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 10/25/2013] [Indexed: 01/06/2023] Open
Abstract
Gnidia glauca and Dioscorea bulbifera are traditional medicinal plants that can be considered as sources of natural antioxidants. Herein we report the phytochemical analysis and free radical scavenging activity of their sequential extracts. Phenolic and flavonoid content were determined. Scavenging activity was checked against pulse radiolysis generated ABTS•+ and OH radical, in addition to DPPH, superoxide and hydroxyl radicals by biochemical methods followed by principal component analysis. G. glauca leaf extracts were rich in phenolic and flavonoid content. Ethyl acetate extract of D. bulbifera bulbs and methanol extract of G. glauca stem exhibited excellent scavenging of pulse radiolysis generated ABTS•+ radical with a second order rate constant of 2.33×106 and 1.72×106, respectively. Similarly, methanol extract of G. glauca flower and ethyl acetate extract of D. bulbifera bulb with second order rate constants of 4.48×106 and 4.46×106 were found to be potent scavengers of pulse radiolysis generated OH radical. G. glauca leaf and stem showed excellent reducing activity and free radical scavenging activity. HPTLC fingerprinting, carried out in mobile phase, chloroform: toluene: ethanol (4: 4: 1, v/v) showed presence of florescent compound at 366 nm as well as UV active compound at 254 nm. GC-TOF-MS analysis revealed the predominance of diphenyl sulfone as major compound in G. glauca. Significant levels of n-hexadecanoic acid and octadecanoic acid were also present. Diosgenin (C27H42O3) and diosgenin (3á,25R) acetate were present as major phytoconstituents in the extracts of D. bulbifera. G. glauca and D. bulbifera contain significant amounts of phytochemicals with antioxidative properties that can be exploited as a potential source for herbal remedy for oxidative stress induced diseases. These results rationalize further investigation in the potential discovery of new natural bioactive principles from these two important medicinal plants.
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Affiliation(s)
- Sougata Ghosh
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune, India
| | - Abhishek Derle
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune, India
| | - Mehul Ahire
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune, India
| | - Piyush More
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune, India
| | - Soham Jagtap
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune, India
| | - Suvarna D. Phadatare
- National Centre For Free Radical Research, Department of Chemistry, University of Pune, Pune, India
| | - Ajay B. Patil
- Garware Research Centre, Department of Chemistry, University of Pune, Pune, India
| | - Amit M. Jabgunde
- Garware Research Centre, Department of Chemistry, University of Pune, Pune, India
| | - Geeta K. Sharma
- National Centre For Free Radical Research, Department of Chemistry, University of Pune, Pune, India
| | - Vaishali S. Shinde
- Garware Research Centre, Department of Chemistry, University of Pune, Pune, India
| | | | - Dilip D. Dhavale
- Garware Research Centre, Department of Chemistry, University of Pune, Pune, India
| | - Balu A. Chopade
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune, India
- Department of Microbiology, University of Pune, Pune, India
- * E-mail:
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Panhwar QK, Memon S. Synthesis, characterization and antioxidant study of Tin(II)–rutin complex: Exploration of tin packaging hazards. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.08.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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