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Riaz NN, Ahmed MM, Kashif M, Sajid M, Ali M, Mahmood K. Biologically potent organotin(iv) complexes of N-acetylated β-amino acids with spectroscopic, X-ray powder diffraction and molecular docking studies. RSC Adv 2023; 13:10768-10789. [PMID: 37033437 PMCID: PMC10074041 DOI: 10.1039/d2ra06718h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 03/07/2023] [Indexed: 04/08/2023] Open
Abstract
Twelve novel organotin(iv) complexes (1-12) of N-acetylated β-amino acids (L1-L8) were synthesized and characterized by elemental analysis, FTIR, multinuclear (1H, 13C, 119Sn) NMR, EI-MS and powder XRD techniques. The XRD results determined lattice parameters, average particle size, and intrinsic strain and confirmed the crystalline nature of complexes as face centered cubic phases. Molecular docking analysis using a catalytic pocket of the α-glucosidase enzyme indicated that most of the compounds displayed a well-fitted orientation and occupied important amino acids in the enzyme's catalytic pocket. Furthermore, in vitro α-glucosidase inhibitory activity results revealed that L1 and complexes 4, 6 and 10 showed the highest activity with IC50 values of 21.54 ± 0.45, 37.96 ± 0.81 and 35.20 ± 1.02, respectively, compared to standard acarbose with an IC50 value of 42.51 ± 0.21. In addition, in vivo antidiabetic activity of selected compounds using alloxan induced diabetic rabbits showed that L4 and complexes 4, 6, 10, 12 showed significant activities like standard metformin. Anti-bacterial activity against the selected Gram-positive and Gram-negative bacterial strains has the following order Escherichia coli > Pseudomonas aeruginosa > Staphylococcus aureus > Bacillus subtilis. Similarly, antioxidant activity by the DPPH scavenging method was also studied with following results: triorganotin > diorganotin > ligands.
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Affiliation(s)
- Nagina Naveed Riaz
- Institute of Chemical Sciences, Bahauddin Zakariya University Multan Pakistan
- Department of Chemistry, Division of Science & Technology, University of Education Lahore Pakistan
| | | | | | - Muhammad Sajid
- Institute of Chemical Sciences, Bahauddin Zakariya University Multan Pakistan
| | - Muhammad Ali
- School of Materials Science and Engineering, University of Science and Technology of China 96 Jinzhai Road, Baohe District Hefei 230026 PR China
| | - Khalid Mahmood
- Institute of Chemical Sciences, Bahauddin Zakariya University Multan Pakistan
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2
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Jiang Y, Yue R, Liu G, Liu J, Peng B, Yang M, Zhao L, Li Z. Garlic ( Allium sativum L.) in diabetes and its complications: Recent advances in mechanisms of action. Crit Rev Food Sci Nutr 2022; 64:5290-5340. [PMID: 36503329 DOI: 10.1080/10408398.2022.2153793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Diabetes mellitus (DM) is a metabolic disease characterized by chronic hyperglycemia and impaired islet secretion that places a heavy burden on the global health care system due to its high incidence rate, long disease course and many complications. Fortunately, garlic (Allium sativum L.), a well-known medicinal plant and functional food without the toxicity and side effects of conventional drugs, has shown positive effects in the treatment of diabetes and its complications. With interdisciplinary development and in-depth exploration, we offer a clear and comprehensive summary of the research from the past ten years, focusing on the mechanisms and development processes of garlic in the treatment of diabetes and its complications, aiming to provide a new perspective for the treatment of diabetes and promote the efficient development of this field.
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Affiliation(s)
- Yayi Jiang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Rensong Yue
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Guojie Liu
- School of Chemical Engineering, Sichuan University, Chengdu, China
| | - Jun Liu
- People's Hospital of NanJiang, Bazhong, China
| | - Bo Peng
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Maoyi Yang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Lianxue Zhao
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zihan Li
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
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3
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Sohrabi M, Binaeizadeh MR, Iraji A, Larijani B, Saeedi M, Mahdavi M. A review on α-glucosidase inhibitory activity of first row transition metal complexes: a futuristic strategy for treatment of type 2 diabetes. RSC Adv 2022; 12:12011-12052. [PMID: 35481063 PMCID: PMC9020348 DOI: 10.1039/d2ra00067a] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 04/12/2022] [Indexed: 12/12/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is characterized by high blood glucose levels and has emerged as a controversial public health issue worldwide. The increasing number of patients with T2DM on one hand, and serious long-term complications of the disease such as obesity, neuropathy, and vascular disorders on the other hand, have induced a huge economic impact on society globally. In this regard, inhibition of α-glucosidase, the enzyme responsible for the hydrolysis of carbohydrates in the body has been the main therapeutic approach to the treatment of T2DM. As α-glucosidase inhibitors (α-GIs) have occupied a special position in the current research and prescription drugs are generally α-GIs, researchers have been encouraged to design and synthesize novel and efficient inhibitors. Previously, the presence of a sugar moiety seemed to be crucial for designing α-GIs since they can attach to the carbohydrate binding site of the enzyme mimicking the structure of disaccharides or oligosaccharides. However, inhibitors lacking glycosyl structures have also shown potent inhibitory activity and development of non-sugar based inhibitors is accelerating. In this respect, in vitro anti-α-glucosidase activity of metal complexes has attracted lots of attention and this paper has reviewed the inhibitory activity of first-row transition metal complexes toward α-glucosidase and discussed their probable mechanisms of action.
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Affiliation(s)
- Marzieh Sohrabi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences Tehran Iran
| | | | - Aida Iraji
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences Shiraz Iran
- Central Research Laboratory, Shiraz University of Medical Sciences Shiraz Iran
- Liosa Pharmed Parseh Company Shiraz Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences Tehran Iran
| | - Mina Saeedi
- Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences Tehran Iran
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences Tehran Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences Tehran Iran
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4
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Rajeshwari K, Anantha Lakshmi P, Archana J, Sumakanth M. Ternary Cobalt(II), Nickel(II), and Copper(II) complexes containing metformin and ethylenediamine: Synthesis, characterization, thermal, in vitro DNA binding, in silico molecular docking, and in vivo antihyperglycemic studies. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.6100] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- K. Rajeshwari
- Department of Chemistry Osmania University Hyderabad India
- Department of Chemistry University College for Women, Osmania University Hyderabad India
| | | | - J. Archana
- Department of Pharmacy RBVRR Women's College of Pharmacy Hyderabad India
| | - M. Sumakanth
- Department of Pharmacy RBVRR Women's College of Pharmacy Hyderabad India
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5
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Prasad KS, Ramachandrappa SU. Potential Medicinal Applications of Vanadium and its Coordination Compounds in Current Research Prospects: A Review. CURRENT BIOACTIVE COMPOUNDS 2020; 16:201-209. [DOI: 10.2174/1573407214666181115111357] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/30/2018] [Accepted: 10/31/2018] [Indexed: 06/02/2024]
Abstract
Background:The variety of biological applications of vanadium impressed researchers to develop vanadium based drugs. The most well-known fact of vanadium is that it is necessary for human beings as an insulin-enhancing agent and herein, we mainly provide an overview of vanadium-based drugs and their applications in the medicinal field for the treatment of diseases such as diabetes and cancer. The first part of this review is focused on mechanistic studies involved in the anti-diabetic activity. The latter part explains the use of vanadium and its related coordination compounds in the treatment of cancer.Methods:This review is purely based on literature search available in the database. We focused on the reports available on the recent advancements in the vanadium chemistry and its biological properties, mainly anti-diabetic and anticancer activities of vanadium based compounds.Results:The study of clinical trials of vanadium and its drug molecules imposed more demand due to their remarkable activity with less toxicity.Conclusion:A brief literature survey was made pertaining to the applications of vanadium compounds/ complexes. Particularly, special attention was paid to explaining mechanistic studies of vanadium based compounds in the treatment of diabetes and cancer.
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Affiliation(s)
- Kollur S. Prasad
- Department of Sciences, Amrita School of Arts and Sciences, Mysuru, Amrita Vishwa Vidyapeetham, Karnataka-570 026, India
| | - Shwetha U. Ramachandrappa
- Department of Chemistry, Bapuji Institute of Engineering and Technology, Davanagere - 577 004, Karnataka, India
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Kawano S, Yoshikawa Y, Kato A, Higashi S, Mitani K, Yasui H, Habata Y, Kuwahara S, Sasaki K, Saito R. Potential antidiabetic zinc(II) complexes of novel 5-oxo-2-thioxopyrrolidine derivatives synthesized via an unprecedented reaction. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Treviño S, Díaz A, Sánchez-Lara E, Sanchez-Gaytan BL, Perez-Aguilar JM, González-Vergara E. Vanadium in Biological Action: Chemical, Pharmacological Aspects, and Metabolic Implications in Diabetes Mellitus. Biol Trace Elem Res 2019; 188:68-98. [PMID: 30350272 PMCID: PMC6373340 DOI: 10.1007/s12011-018-1540-6] [Citation(s) in RCA: 170] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 10/01/2018] [Indexed: 12/12/2022]
Abstract
Vanadium compounds have been primarily investigated as potential therapeutic agents for the treatment of various major health issues, including cancer, atherosclerosis, and diabetes. The translation of vanadium-based compounds into clinical trials and ultimately into disease treatments remains hampered by the absence of a basic pharmacological and metabolic comprehension of such compounds. In this review, we examine the development of vanadium-containing compounds in biological systems regarding the role of the physiological environment, dosage, intracellular interactions, metabolic transformations, modulation of signaling pathways, toxicology, and transport and tissue distribution as well as therapeutic implications. From our point of view, the toxicological and pharmacological aspects in animal models and humans are not understood completely, and thus, we introduced them in a physiological environment and dosage context. Different transport proteins in blood plasma and mechanistic transport determinants are discussed. Furthermore, an overview of different vanadium species and the role of physiological factors (i.e., pH, redox conditions, concentration, and so on) are considered. Mechanistic specifications about different signaling pathways are discussed, particularly the phosphatases and kinases that are modulated dynamically by vanadium compounds because until now, the focus only has been on protein tyrosine phosphatase 1B as a vanadium target. Particular emphasis is laid on the therapeutic ability of vanadium-based compounds and their role for the treatment of diabetes mellitus, specifically on that of vanadate- and polioxovanadate-containing compounds. We aim at shedding light on the prevailing gaps between primary scientific data and information from animal models and human studies.
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Affiliation(s)
- Samuel Treviño
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, C.P. 72570 Puebla, PUE Mexico
| | - Alfonso Díaz
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, C.P. 72570 Puebla, PUE Mexico
| | - Eduardo Sánchez-Lara
- Centro de Química, ICUAP, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, C.P. 72570 Puebla, PUE Mexico
| | - Brenda L. Sanchez-Gaytan
- Centro de Química, ICUAP, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, C.P. 72570 Puebla, PUE Mexico
| | - Jose Manuel Perez-Aguilar
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, C.P. 72570 Puebla, PUE Mexico
| | - Enrique González-Vergara
- Centro de Química, ICUAP, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, C.P. 72570 Puebla, PUE Mexico
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8
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Mushtaq A, Ali S, Iqbal M, Shahzadi S, Tahir MN, Ismail H. Supramolecular Heteroleptic Copper(II) Carboxylates: Synthesis, Spectral Characterization, Crystal Structures, and Enzyme Inhibition Assay. RUSS J COORD CHEM+ 2018. [DOI: 10.1134/s1070328418030053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Doucette KA, Hassell KN, Crans DC. Selective speciation improves efficacy and lowers toxicity of platinum anticancer and vanadium antidiabetic drugs. J Inorg Biochem 2016; 165:56-70. [PMID: 27751591 DOI: 10.1016/j.jinorgbio.2016.09.013] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 09/22/2016] [Accepted: 09/29/2016] [Indexed: 12/14/2022]
Abstract
Improving efficacy and lowering resistance to metal-based drugs can be addressed by consideration of the coordination complex speciation and key reactions important to vanadium antidiabetic drugs or platinum anticancer drugs under biological conditions. The methods of analyses vary depending on the specific metal ion chemistry. The vanadium compounds interconvert readily, whereas the reactions of the platinum compounds are much slower and thus much easier to study. However, the vanadium species are readily differentiated due to vanadium complexes differing in color. For both vanadium and platinum systems, understanding the processes as the compounds, Lipoplatin and Satraplatin, enter cells is needed to better combat the disease; there are many cellular metabolites, which may affect processing and thus the efficacy of the drugs. Examples of two formulations of platinum compounds illustrate how changing the chemistry of the platinum will result in less toxic and better tolerated drugs. The consequence of the much lower toxicity of the drug, can be readily realized because cisplatin administration requires hospital stay whereas Lipoplatin can be done in an outpatient manner. Similarly, the properties of Satraplatin allow for development of an oral drug. These forms of platinum demonstrate that the direct consequence of more selective speciation is lower side effects and cheaper administration of the anticancer agent. Therefore we urge that as the community goes forward in development of new drugs, control of speciation chemistry will be considered as one of the key strategies in the future development of anticancer drugs.
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Affiliation(s)
- Kaitlin A Doucette
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523, USA
| | - Kelly N Hassell
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523, USA
| | - Debbie C Crans
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523, USA; Dept. Chemistry, Colorado State University, Fort Collins, CO 80523, USA.
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10
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Abstract
Vanadium is omnipresent in trace amounts in the environment, in food and also in the human body, where it might serve as a regulator for phosphate-dependent proteins. Potential vanadium-based formulations--inorganic and coordination compounds with organic ligands--commonly underlie speciation in the body, that is, they are converted to vanadate(V), oxidovanadium(IV) and to complexes with the body's own ligand systems. Vanadium compounds have been shown to be potentially effective against diabetes Type 2, malign tumors including cancer, endemic tropical diseases (such as trypanosomiasis, leishmaniasis and amoebiasis), bacterial infections (tuberculosis and pneumonia) and HIV infections. Furthermore, vanadium drugs can be operative in cardio- and neuro-protection. So far, vanadium compounds have not yet been approved as pharmaceuticals for clinical use.
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11
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Munekane M, Motomura S, Kamino S, Ueda M, Haba H, Yoshikawa Y, Yasui H, Hiromura M, Enomoto S. Visualization of biodistribution of Zn complex with antidiabetic activity using semiconductor Compton camera GREI. Biochem Biophys Rep 2015; 5:211-215. [PMID: 28955826 PMCID: PMC5600336 DOI: 10.1016/j.bbrep.2015.12.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 11/24/2015] [Accepted: 12/07/2015] [Indexed: 01/18/2023] Open
Abstract
Various types of zinc (Zn) complexes have been developed as promising antidiabetic agents in recent years. However, the pharmacological action of Zn complex is not elucidated because the biodistribution of the complex in a living organism has not been studied. Nuclear medicine imaging is superior technology for the noninvasive analysis of the temporal distribution of drug candidates in living organisms. Gamma-ray emission imaging (GREI), which was developed by our laboratory as a novel molecular imaging modality, was adopted to visualize various γ-ray–emitting radionuclides that are not detected by conventional imaging techniques such as positron emission tomography and single-photon emission computed tomography. Therefore, we applied GREI to a biodistribution assay of Zn complexes. In the present study, 65Zn was produced in the natCu(p,n) reaction in an azimuthal varying field cyclotron for the GREI experiment. The distribution was then noninvasively visualized using GREI after the intravenous administration of a 65Zn-labeled di(1-oxy-2-pyridinethiolato)zinc [Zn(opt)2], ZnCl2, and di(l-histidinato)zinc. The GREI images were validated using conventional invasive assays. This novel study showed that GREI is a powerful tool for the biodistribution analysis of antidiabetic Zn complexes in a living organism. In addition, accumulation of 65Zn in the cardiac blood pool was observed for [Zn(opt)2], which exhibits potent antidiabetic activity. These results suggest that the slow elimination of Zn from the blood is correlated to the antidiabetic activity of [Zn(opt)2]. GREI was applied to the biodistribution analysis of Zn complexes. The characteristic accumulation of 65Zn for [Zn(opt)2] was successfully visualized. Long retention in the blood may be related in the antidiabetic effect of [Zn(opt)2].
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Affiliation(s)
- Masayuki Munekane
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.,Japan Society for the Promotion of Science, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Shinji Motomura
- Next-generation Imaging Team, RIKEN Center for Life Science Technologies, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Shinichiro Kamino
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.,Next-generation Imaging Team, RIKEN Center for Life Science Technologies, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Masashi Ueda
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Hiromitsu Haba
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yutaka Yoshikawa
- Department of Analytical and Bioinorganic Chemistry, Division of Analytical and Physical Chemistry, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Hiroyuki Yasui
- Department of Analytical and Bioinorganic Chemistry, Division of Analytical and Physical Chemistry, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Makoto Hiromura
- Next-generation Imaging Team, RIKEN Center for Life Science Technologies, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Shuichi Enomoto
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.,Next-generation Imaging Team, RIKEN Center for Life Science Technologies, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
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12
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Crans DC. Antidiabetic, Chemical, and Physical Properties of Organic Vanadates as Presumed Transition-State Inhibitors for Phosphatases. J Org Chem 2015; 80:11899-915. [PMID: 26544762 DOI: 10.1021/acs.joc.5b02229] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Studies of antidiabetic vanadium compounds, specifically the organic vanadate esters, are reviewed with regard to their chemistry and biological properties. The compounds are described from the perspective of how the fundamental chemistry and properties of organic vanadate esters impact their effects as inhibitors for phosphatases based on the structural information obtained from vanadium-phosphatase complexes. Vanadium compounds have been reported to have antidiabetic properties for more than a century. The structures and properties of organic vanadate complexes are reviewed, and the potency of such vanadium coordination complexes as antidiabetic agents is described. Because such compounds form spontaneously in aqueous environments, the reactions with most components in any assay or cellular environment has potential to be important and should be considered. Generally, the active form of vanadium remains elusive, although studies have been reported of a number of promising vanadium compounds. The description of the antidiabetic properties of vanadium compounds is described here in the context of recent characterization of vanadate-phosphatase protein structures by data mining. Organic vanadate ester compounds are generally four coordinate or five coordinate with the former being substrate analogues and the latter being transition-state analogue inhibitors. These studies demonstrated a framework for characterization of five-coordinate trigonal bipyramidal vanadium inhibitors by comparison with the reported vanadium-protein phosphatase complexes. The binding of the vanadium to the phosphatases is either as a five-coordinate exploded transition-state analogue or as a high energy intermediate, respectively. Even if potency as an inhibitor requires trigonal bipyramidal geometry of the vanadium when bound to the protein, such geometry can be achieved upon binding from compounds with other geometries. Desirable properties of ligands are identified and analyzed. Ligand interactions, as reported in one peptidic substrate, are favorable so that complementarity between phosphatase and coordinating ligand to the vanadium can be established resulting in a dramatic enhancement of the inhibitory potency. These considerations point to a frameshift in ligand design for vanadium complexes as phosphatase inhibitors and are consistent with other small molecule having much lower affinities. Combined, these studies do suggest that if effective delivery of potentially active antidiabetic compound such a the organic vanadate peptidic substrate was possible the toxicity problems currently reported for the salts and some of the complexes may be alleviated and dramatic enhancement of antidiabetic vanadium compounds may result.
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Affiliation(s)
- Debbie C Crans
- Department of Chemistry and Cell and Molecular Biology Program, Colorado State University , 1301 Center Avenue, Fort Collins, Colorado 80523, United States
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Pelletier J, Domingues N, Castro MMCA, Östenson CG. In vitro effects of bis(1,2-dimethyl-3-hydroxy-4-pyridinonato)oxidovanadium(IV), or VO(dmpp)2, on insulin secretion in pancreatic islets of type 2 diabetic Goto-Kakizaki rats. J Inorg Biochem 2015; 154:29-34. [PMID: 26559485 DOI: 10.1016/j.jinorgbio.2015.11.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 10/23/2015] [Accepted: 11/02/2015] [Indexed: 12/26/2022]
Abstract
Vanadium compounds have been explored as therapy of diabetes, and most studies have focussed on insulin mimetic effects, i.e. reducing hyperglycemia by improving glucose sensitivity and thus glucose uptake in sensitive tissues. We have recently shown that bis(1,2-dimethyl-3-hydroxy-4-pyridinonato)oxidovanadium(IV), VO(dmpp)2, has promising effects when compared to another vanadium compound, bis(maltolato)oxidovanadium(IV), BMOV, and insulin itself, in isolated adipocytes and in vivo in Goto-Kakizaki (GK) rats, an animal model of hereditary type 2 diabetes (T2D).We now have investigated in GK rats whether VO(dmpp)2 also modulates another important defect in T2D, impaired insulin secretion. VO(dmpp)2, but not BMOV, stimulated insulin secretion from isolated GK rat pancreatic islets at high, 16.7mM, but not at low–normal, 3.3 mM, glucose concentration. Mechanistic studies demonstrate that the insulin releasing effect of VO(dmpp)2 is due to its interaction with several steps in the stimulus-secretion coupling for glucose, including islet glucose metabolism and K-ATP channels, L-type Ca2+ channels, modulation by protein kinases A and C, as well as the exocytotic machinery. In conclusion, VO(dmpp)2 exhibits properties of interest for treatment of the insulin secretory defect in T2D, in addition to its well-described insulin mimetic activity.
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Affiliation(s)
- Julien Pelletier
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, Solna D2:04, SE-171 76 Stockholm, Sweden
| | - Neuza Domingues
- Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, Portugal
| | - M Margarida C A Castro
- Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, Portugal; Coimbra Chemistry Centre, Rua Larga, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Claes-Göran Östenson
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, Solna D2:04, SE-171 76 Stockholm, Sweden.
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14
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Pessoa JC, Etcheverry S, Gambino D. Vanadium compounds in medicine. Coord Chem Rev 2015; 301:24-48. [PMID: 32226091 PMCID: PMC7094629 DOI: 10.1016/j.ccr.2014.12.002] [Citation(s) in RCA: 337] [Impact Index Per Article: 37.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 11/18/2014] [Accepted: 12/02/2014] [Indexed: 12/02/2022]
Abstract
Vanadium is a transition metal that, being ubiquitously distributed in soil, crude oil, water and air, also found roles in biological systems and is an essential element in most living beings. There are also several groups of organisms which accumulate vanadium, employing it in their biological processes. Vanadium being a biological relevant element, it is not surprising that many vanadium based therapeutic drugs have been proposed for the treatment of several types of diseases. Namely, vanadium compounds, in particular organic derivatives, have been proposed for the treatment of diabetes, of cancer and of diseases caused by parasites. In this work we review the medicinal applications proposed for vanadium compounds with particular emphasis on the more recent publications. In cells, partly due to the similarity of vanadate and phosphate, vanadium compounds activate numerous signaling pathways and transcription factors; this by itself potentiates application of vanadium-based therapeutics. Nevertheless, this non-specific bio-activity may also introduce several deleterious side effects as in addition, due to Fenton's type reactions or of the reaction with atmospheric O2, VCs may also generate reactive oxygen species, thereby introducing oxidative stress with consequences presently not well evaluated, particularly for long-term administration of vanadium to humans. Notwithstanding, the potential of vanadium compounds to treat type 2 diabetes is still an open question and therapies using vanadium compounds for e.g. antitumor and anti-parasitic related diseases remain promising.
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Affiliation(s)
- Joao Costa Pessoa
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Susana Etcheverry
- Cátedra de Bioquímica Patológica and CEQUINOR, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115 1900 La Plata, Argentina
| | - Dinorah Gambino
- Cátedra de Química Inorgánica, Facultad de Química, Universidad de la República, Gral. Flores 2124, 11800 Montevideo, Uruguay
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15
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Ranasinghe P, Pigera S, Galappatthy P, Katulanda P, Constantine GR. Zinc and diabetes mellitus: understanding molecular mechanisms and clinical implications. ACTA ACUST UNITED AC 2015; 23:44. [PMID: 26381880 PMCID: PMC4573932 DOI: 10.1186/s40199-015-0127-4] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 08/20/2015] [Indexed: 01/08/2023]
Abstract
Background Diabetes mellitus is a leading cause of morbidity and mortality worldwide. Studies have shown that Zinc has numerous beneficial effects in both type-1 and type-2 diabetes. We aim to evaluate the literature on the mechanisms and molecular level effects of Zinc on glycaemic control, β-cell function, pathogenesis of diabetes and its complications. Methods A review of published studies reporting mechanisms of action of Zinc in diabetes was undertaken in PubMed and SciVerse Scopus medical databases using the following search terms in article title, abstract or keywords; (“Zinc” or “Zn”) and (“mechanism” or “mechanism of action” or “action” or “effect” or “pathogenesis” or “pathology” or “physiology” or “metabolism”) and (“diabetes” or “prediabetes” or “sugar” or “glucose” or “insulin”). Results The literature search identified the following number of articles in the two databases; PubMed (n = 1799) and SciVerse Scopus (n = 1879). After removing duplicates the total number of articles included in the present review is 111. Our results show that Zinc plays an important role in β-cell function, insulin action, glucose homeostasis and the pathogenesis of diabetes and its complications. Conclusion Numerous in-vitro and in-vivo studies have shown that Zinc has beneficial effects in both type-1 and type-2 diabetes. However further randomized double-blinded placebo-controlled clinical trials conducted for an adequate duration, are required to establish therapeutic safety in humans. Electronic supplementary material The online version of this article (doi:10.1186/s40199-015-0127-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Priyanga Ranasinghe
- Department of Pharmacology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka.
| | - Shehani Pigera
- Department of Pharmacology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | | | - Prasad Katulanda
- Diabetes Research Unit, Department of Clinical Medicine, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Godwin R Constantine
- Diabetes Research Unit, Department of Clinical Medicine, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
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16
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Wang N, Wang Z, Niu X, Yang X. Synthesis, characterization and anti-diabetic therapeutic potential of novel aminophenol-derivatized nitrilotriacetic acid vanadyl complexes. J Inorg Biochem 2015; 152:104-13. [PMID: 26383118 DOI: 10.1016/j.jinorgbio.2015.07.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Revised: 07/03/2015] [Accepted: 07/15/2015] [Indexed: 01/24/2023]
Abstract
In the present work, we synthesized three novel aminophenol-derivatized nitrilotriacetic acid vanadyl complexes (VOohpada, VOmhpada, VOphpada) using the strategy of rational incorporation of antioxidant groups in ligand in order to balance the side effects with the therapeutic properties. The complexes were characterized by IR, UV-VIS, ESI-MS and elemental analysis. The biological evaluations in vitro revealed that the position of the hydroxyl group of aminophenol moiety regulated the antioxidant activity of the complexes as well as the cytotoxicity on HK-2 cells. The vanadyl complex of p-hydroxyl aminophenol derivative (VOphpada) exhibited better antioxidant activity and lower cytotoxicity than other analogs. In type II diabetic db/db mice, VOphpada (0.1 mmol/kg/day) effectively reduced blood glucose level, improved glucose tolerance, and alleviated stresses induced by hyperglycemia and hyperlipidemia. VOphpada treatment significantly increased expression of PPARα and γ, activated Akt, and inactivated JNK in muscle and adipose tissues. The insulin enhancement effects of VOphpada were observed more potent than BMOV. Moreover, VOphpada decreased the level of kidney injury molecule-1 marker (KIM-1), suggesting a potentially lower renal toxicity. In overall, the present results suggest VOphpada as a novel hypoglycemic agent with improved efficacy-over-toxicity index.
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Affiliation(s)
- Na Wang
- State Key Laboratories of Natural and Biomimetic Drugs, Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, PR China
| | - Ziwei Wang
- State Key Laboratories of Natural and Biomimetic Drugs, Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, PR China
| | - Xia Niu
- State Key Laboratories of Natural and Biomimetic Drugs, Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, PR China
| | - Xiaoda Yang
- State Key Laboratories of Natural and Biomimetic Drugs, Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, PR China.
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17
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Sánchez-Lombardo I, Alvarez S, McLauchlan CC, Crans DC. Evaluating transition state structures of vanadium-phosphatase protein complexes using shape analysis. J Inorg Biochem 2015; 147:153-64. [PMID: 25953100 DOI: 10.1016/j.jinorgbio.2015.04.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 04/08/2015] [Accepted: 04/08/2015] [Indexed: 12/19/2022]
Abstract
Shape analysis of coordination complexes is well-suited to evaluate the subtle distortions in the trigonal bipyramidal (TBPY-5) geometry of vanadium coordinated in the active site of phosphatases and characterized by X-ray crystallography. Recent studies using the tau (τ) analysis support the assertion that vanadium is best described as a trigonal bipyramid, because this geometry is the ideal transition state geometry of the phosphate ester substrate hydrolysis (C.C. McLauchlan, B.J. Peters, G.R. Willsky, D.C. Crans, Coord. Chem. Rev. http://dx.doi.org/10.1016/j.ccr.2014.12.012 ; D.C. Crans, M.L. Tarlton, C.C. McLauchlan, Eur. J. Inorg. Chem. 2014, 4450-4468). Here we use continuous shape measures (CShM) analysis to investigate the structural space of the five-coordinate vanadium-phosphatase complexes associated with mechanistic transformations between the tetrahedral geometry and the five-coordinate high energy TBPY-5 geometry was discussed focusing on the protein tyrosine phosphatase 1B (PTP1B) enzyme. No evidence for square pyramidal geometries was observed in any vanadium-protein complexes. The shape analysis positioned the metal ion and the ligands in the active site reflecting the mechanism of the cleavage of the organic phosphate in a phosphatase. We identified the umbrella distortions to be directly on the reaction path between tetrahedral phosphate and the TBPY-5-types of high-energy species. The umbrella distortions of the trigonal bipyramid are therefore identified as being the most relevant types of transition state structures for the phosphoryl group transfer reactions for phosphatases and this may be related to the possibility that vanadium is an inhibitor for enzymes that support both exploded and five-coordinate transition states.
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Affiliation(s)
| | - Santiago Alvarez
- Departament de Química Inorganica, Institut de Química Teorica i Computacional (IQTCUB), Universitat de Barcelona, Martí i Franques, 1-11, 08028 Barcelona, Spain.
| | - Craig C McLauchlan
- Department of Chemistry, Illinois State University, Campus Box 4160, Normal, IL 61790, USA
| | - Debbie C Crans
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA.
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18
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Therapeutic properties of VO(dmpp)2 as assessed by in vitro and in vivo studies in type 2 diabetic GK rats. J Inorg Biochem 2014; 131:115-22. [DOI: 10.1016/j.jinorgbio.2013.11.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 11/15/2013] [Accepted: 11/17/2013] [Indexed: 01/28/2023]
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19
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Kadowaki S, Munekane M, Kitamura Y, Hiromura M, Kamino S, Yoshikawa Y, Saji H, Enomoto S. Development of new zinc dithiosemicarbazone complex for use as oral antidiabetic agent. Biol Trace Elem Res 2013; 154:111-9. [PMID: 23712834 DOI: 10.1007/s12011-013-9704-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Accepted: 05/13/2013] [Indexed: 01/11/2023]
Abstract
The increasing prevalence of diabetes mellitus (DM) worldwide has underscored the urgency of developing an efficient therapeutic agent. Recently, Zn complexes have been attracting attention due to their antidiabetic activity. In this study, we designed and synthesized a new Zn complex, Zn-3,4-heptanedione-bis(N (4)-methylthiosemicarbazonato) (Zn-HTSM), characterized its physicochemical properties, and examined its antidiabetic activity in KK-A(y) type 2 DM model mice. It was demonstrated that Zn-HTSM has adequate lipophilicity for the cellular permeability, shows potent hypoglycemic activity, and improves glucose intolerance in KK-A(y) mice. We also analyzed the levels of serum adipokines after continuous oral administration of Zn-HTSM. The level of serum leptin of KK-A(y) mice is significantly reduced by the treatment of Zn-HTSM. Nevertheless, the levels of serum insulin and adiponectin were not improved. These data suggested that the Zn-HTSM acts on the leptin metabolism. Our present studies indicate that Zn-HTSM is a candidate oral antidiabetic agent for the treatment of type 2 DM.
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Affiliation(s)
- Saori Kadowaki
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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20
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Li L, Gao L, Liu S, Liu Q, Sun S, Huan Y, Li C, Peng J, Hou G, Li L, Liu W, Shen Z. Bis(α-furancarboxylato)oxovanadium(IV) exerts durable antidiabetic effects and suppresses matrix metalloproteinase-2 activity in spontaneous type 2 diabetic KKAy mice. Biol Trace Elem Res 2013; 153:329-39. [PMID: 23649370 DOI: 10.1007/s12011-013-9689-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 04/25/2013] [Indexed: 01/14/2023]
Abstract
Vanadium compounds maintain euglycemic effects in diabetic rats long after drug withdrawal and bis(α-furancarboxylato)oxovanadium(IV) (BFOV) possesses potent antidiabetic effects in diabetic rats. Here, we investigated the treatment and posttreatment effects of BFOV in diabetic Kuo Kondo [1, 2] with Ay gene (KKAy) mice, and whether these effects were associated with changes in matrix metalloproteinases (MMPs). KKAy mice received normal saline or BFOV initially at 70 μmol/kg/day for 1 month, which was tapered to 17 μmol/kg/day in the next 2 months and discontinued thereafter. Compared to diabetic controls, fasting plasma glucose (FPG) was reduced by 46 and 19 % in KKAy mice after 70 μmol/kg BFOV for 1 month and 3 months after BFOV withdrawal, respectively. OGTT and ITT showed improved glucose tolerance and a better response of FPG to insulin with a significant decrease in HOMA-IR and a marked rise in the insulin sensitivity index after 70 μmol/kg BFOV for 1 month and 4 months after BFOV withdrawal (P <0.05 in all vs. diabetic controls). BFOV treatment resulted in a moderate but significant reduction in body weight and systolic blood pressure (SBP) at 1 month of treatment and 4 months following BFOV withdrawal (P <0.05 in all vs. diabetic controls). Gelatin zymography showed that serum MMP2 activity was significantly reduced and immunoblotting assays further showed that MMP2 expression was markedly downregulated in the liver after 1 month of treatment with 70 μmol/kg and 4 months after BFOV withdrawal (P <0.05 in all vs. diabetic controls). These results suggested that BFOV possessed potent treatment and posttreatment effects in KKAy mice with improved metabolic profile and reduced body weight and SBP. Furthermore, these effects were associated with decreased MMP2 expression and activity in diabetic KKAy mice.
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Affiliation(s)
- Linyi Li
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, No.1 Xiannongtan Street, Beijing 100050, China
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21
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Mehtab S, Gonçalves G, Roy S, Tomaz AI, Santos-Silva T, Santos MFA, Romão MJ, Jakusch T, Kiss T, Pessoa JC. Interaction of vanadium(IV) with human serum apo-transferrin. J Inorg Biochem 2013; 121:187-95. [PMID: 23411030 DOI: 10.1016/j.jinorgbio.2012.12.020] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Revised: 12/27/2012] [Accepted: 12/28/2012] [Indexed: 10/27/2022]
Abstract
The interaction of V(IV)O-salts as well as of a few V(IV)O(carrier)n complexes with human serum transferrin (hTF) is studied focusing on the determination of the nature and stoichiometry of the binding of V(IV)O(2+) to hTF, as well as whether the conformation of hTF upon binding to V(IV)O(2+) or to its complexes is changed. Circular dichroism (CD) spectra measured for solutions containing V(IV)O(2+) and apo-hTF, and V(IV)O-maltol and apo-hTF, clearly indicate that hTF-V(IV)O-maltol ternary species form with a V(IV)O:maltol stoichiometry of 1:1. For V(IV)O salts and several V(IV)O(carrier)n complexes (carrier ligand=maltolato, dhp, picolinato and dipicolinato) (Hdhp=1,2-dimethyl-3-hydroxy-4-pyridinone) the maximum number of V(IV)O(2+) bound per mole of hTF is determined to be ~2 or lower in all cases. The binding of V(IV)O to apo-hTF most certainly involves several amino acid residues of the Fe-binding site, and as concluded by urea gel electrophoresis experiments, the formation of (V(IV)O)2hTF species may occur with the closing of the hTF conformation as is the case in (Fe(III))2hTF, which is an essential feature for the transferrin receptor recognition.
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Affiliation(s)
- Sameena Mehtab
- Centro Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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22
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Gonçalves G, Tomaz I, Correia I, Veiros LF, Castro MMCA, Avecilla F, Palacio L, Maestro M, Kiss T, Jakusch T, Garcia MHV, Pessoa JC. A novel VIVO–pyrimidinone complex: synthesis, solution speciation and human serum protein binding. Dalton Trans 2013; 42:11841-61. [DOI: 10.1039/c3dt50553g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Ulbricht C, Chao W, Costa D, Culwell S, Eichelsdoerfer P, Flanagan K, Guilford J, Higdon ERB, Isaac R, Mintzer M, Rusie E, Serrano JMG, Windsor RC, Woods J, Zhou S. An evidence-based systematic review of vanadium by the Natural Standard Research Collaboration. J Diet Suppl 2012; 9:223-51. [PMID: 22891992 DOI: 10.3109/19390211.2012.709365] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
An evidence-based systematic review of vanadium by the Natural Standard Research Collaboration consolidates the safety and efficacy data available in the scientific literature using a validated, reproducible grading rationale. This article includes written and statistical analysis of clinical trials, plus a compilation of expert opinion, folkloric precedent, history, pharmacology, kinetics/dynamics, interactions, adverse effects, toxicology, and dosing.
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Affiliation(s)
- Catherine Ulbricht
- Natural Standard Research Collaboration, Massachusetts GeneralHospital, Somerville, Massachusetts, USA.
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24
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Metelo AM, Pérez-Carro R, Castro MMCA, López-Larrubia P. VO(dmpp)2 normalizes pre-diabetic parameters as assessed by in vivo magnetic resonance imaging and spectroscopy. J Inorg Biochem 2012; 115:44-9. [PMID: 22922310 DOI: 10.1016/j.jinorgbio.2012.06.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 06/01/2012] [Accepted: 06/05/2012] [Indexed: 01/19/2023]
Abstract
Type 2 diabetes mellitus has been associated with obesity, metabolic syndrome, cardiovascular diseases and cancer. Attempts have been made for early diagnosis and finding effective drugs to prevent severe consequences and ameliorate the symptoms of this disorder. In this work, the pharmacological properties of VO(dmpp)(2), [bis(1,2-dimethyl-3-hydroxy-4-pyridinonato)oxovanadium(IV)], were in vivo evaluated. For 4 weeks fatty Zucker rats were subjected to a daily dose of VO(dmpp)(2) (44 μmol/kg) and their metabolic profile was followed by assessing different biological parameters at established time points: body weight, subcutaneous fat width and hepatic triglyceride content determined by magnetic resonance imaging and spectroscopy, respectively. A glucose tolerance test was performed at the end of the experiment. After treatment, treated obese rats presented a weight significantly lower than the non-treated obese animals (359.0±11.1 vs. 433.5±6.2g, P<0.05), a thinner subcutaneous fat width, and a statistically significant decrease in hepatic triglyceride content (5.41±0.59 vs. 21.03±1.40%, P<0.0005). Additionally, the glucose intolerant profile of fatty Zucker rats was completely reversed in treated animals (102.3±2.1 vs. 172.4±1.3 mg/100 mL; P<0.0005). These results reinforce the therapeutic action of VO(dmpp)(2) which shows particular effects on lipid metabolism.
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Affiliation(s)
- Ana M Metelo
- Instituto Investigaciones Biomédicas "Alberto Sols", CSIC-UAM, Madrid, Spain
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25
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Transport of the anti-diabetic VO2+ complexes formed by pyrone derivatives in the blood serum. J Inorg Biochem 2012; 115:87-99. [PMID: 22926028 DOI: 10.1016/j.jinorgbio.2012.04.020] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 03/20/2012] [Accepted: 04/20/2012] [Indexed: 11/22/2022]
Abstract
The biotransformation in the blood serum of the two anti-diabetic agents [VO(ema)(2)] - or BEOV - and [VO(koj)(2)] formed by ethylmaltol (Hema) and kojic acid (Hkoj) was studied with EPR spectroscopy, pH-potentiometry and DFT calculations. For comparison, the behavior of the systems with tropolone (Htrop) was also analyzed. The interaction of [VO(ema)(2)] and [VO(koj)(2)] with the most important bioligands of the serum, lactic (Hlact) and citric acid (H(3)citr), human serum transferrin (hTf), human serum albumin (HSA) and immunoglobulin G (IgG) was examined and discussed. Among the several mixed species observed, cis-VO(carrier)(2)(hTf), cis-VO(carrier)(2)(HSA) and cis-VO(carrier)(2)(IgG), where carrier is ethylmaltolate or kojate, with a His-N of the protein coordinated in the equatorial position, are plausible candidates for the transport processes of the drug toward the target organs. The values of the logβ are in the range 19.6-19.8 for the species formed by ethylmaltol and 17.4-17.6 for those formed by kojic acid. The formation of such species was confirmed through pH-titrations of the model systems VO(2+)/carrier/1-MeIm and VO(2+)/carrier/Ac-his, where 1-MeIm and Ac-his are 1-methylimidazole and N-acetylhistamine, and DFT calculations of (51)V A(z) of the model species cis-[VO(carrier)(2)(1-MeIm)] and cis-[VO(carrier)(2)(Ac-his)]. The values of the stability constants for the mixed species observed were used to predict the biodistribution of VO(2+) ion between the blood serum components for concentrations of 1, 10 and 50 μM.
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26
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Meermann B, Sperling M. Hyphenated techniques as tools for speciation analysis of metal-based pharmaceuticals: developments and applications. Anal Bioanal Chem 2012; 403:1501-22. [DOI: 10.1007/s00216-012-5915-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Revised: 02/28/2012] [Accepted: 02/28/2012] [Indexed: 10/28/2022]
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27
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Sakurai H. Copper Compounds Ameliorate Cardiovasclur Dysfunction and Diabetes in Animals. YAKUGAKU ZASSHI 2012; 132:285-91. [DOI: 10.1248/yakushi.132.285] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hiromu Sakurai
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science
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28
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Sanna D, Buglyó P, Bíró L, Micera G, Garribba E. Coordinating Properties of Pyrone and Pyridinone Derivatives, Tropolone and Catechol toward the VO2+ Ion: An Experimental and Computational Approach. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201101249] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Murakami H, Yasui H, Yoshikawa Y. Pharmacological and Pharmacokinetic Studies of Anti-diabetic Tropolonato–Zn(II) Complexes with Zn(S 2O 2) Coordination Mode. Chem Pharm Bull (Tokyo) 2012; 60:1096-104. [DOI: 10.1248/cpb.c12-00078] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hiroki Murakami
- Department of Analytical and Bioinorganic Chemistry, Division of Analytical & Physical Sciences, Kyoto Pharmaceutical University
| | - Hiroyuki Yasui
- Department of Analytical and Bioinorganic Chemistry, Division of Analytical & Physical Sciences, Kyoto Pharmaceutical University
| | - Yutaka Yoshikawa
- Department of Analytical and Bioinorganic Chemistry, Division of Analytical & Physical Sciences, Kyoto Pharmaceutical University
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Abstract
The current status and likely future directions of complexes of V(V/IV), Cr(III), Mo(VI), W(VI), Zn(II), Cu(II), and Mn(III) as potential oral drugs against type 2 diabetes are reviewed. We propose a unified model of extra- and intracellular mechanisms of anti-diabetic efficacies of V(V/IV), Mo(VI), W(VI), and Cr(III), centred on high-oxidation-state oxido/peroxido species that inhibit protein tyrosine phosphatases (PTPs) involved in insulin signalling. The postulated oxidative mechanism of anti-diabetic activity of Cr(III) via carcinogenic Cr(VI/V) (which adds to safety concerns) is consistent with recent clinical trials on Cr(III) picolinate, where activity was apparent only in patients with poorly controlled diabetes (high oxidative stress), and the correlation between the anti-diabetic activities and ease of oxidation of Cr(III) supplements and their metabolites in vivo. Zn(II) and Cu(II) anti-diabetics act via different mechanisms and are unlikely to be used as specific anti-diabetics due to their diverse and unpredictable biological activities. Hence, future research directions are likely to centre on enhancing the bioavailability and selectivity of V(V/IV), Mo(VI), or W(VI) drugs. The strategy of potentiating circulating insulin with metal ions has distinct therapeutic advantages over interventions that stimulate the release of more insulin, or use insulin mimetics, because of many adverse side-effects of increased levels of insulin, including increased risks of cancer and cardiovascular diseases.
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Affiliation(s)
- Aviva Levina
- School of Chemistry, The University of Sydney, NSW, Australia
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31
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Gao Z, Zhang C, Yu S, Yang X, Wang K. Vanadyl bisacetylacetonate protects β cells from palmitate-induced cell death through the unfolded protein response pathway. J Biol Inorg Chem 2011; 16:789-98. [PMID: 21512771 DOI: 10.1007/s00775-011-0780-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Accepted: 03/26/2011] [Indexed: 01/08/2023]
Abstract
Endoplasmic reticulum (ER) stress induced by free fatty acids (FFA) is important to β-cell loss during the development of type 2 diabetes. To test whether vanadium compounds could influence ER stress and the responses in their mechanism of antidiabetic effects, we investigated the effects and the mechanism of vanadyl bisacetylacetonate [VO(acac)(2)] on β cells upon treatment with palmitate, a typical saturated FFA. The experimental results showed that VO(acac)(2) could enhance FFA-induced signaling pathways of unfolded protein responses by upregulating the prosurvival chaperone immunoglobulin heavy-chain binding protein/78-kDa glucose-regulated protein and downregulating the expression of apoptotic C/EBP homologous protein, and consequently the reduction of insulin synthesis. VO(acac)(2) also ameliorated FFA-disturbed Ca(2+) homeostasis in β cells. Overall, VO(acac)(2) enhanced stress adaption, thus protecting β cells from palmitate-induced apoptosis. This study provides some new insights into the mechanisms of antidiabetic vanadium compounds.
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Affiliation(s)
- Zhonglan Gao
- State Key Laboratories of Natural and Biomimetic Drugs and Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing, People's Republic of China
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