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Ertik O, Tunali S, Acar ET, Bal-Demirci T, Ülküseven B, Yanardag R. Antioxidant Activity and Protective Effects of an Oxovanadium (IV) Complex on Heart and Aorta Injury of STZ-Diabetic Rats. Biol Trace Elem Res 2024; 202:2085-2099. [PMID: 37603267 DOI: 10.1007/s12011-023-03802-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 08/02/2023] [Indexed: 08/22/2023]
Abstract
Diabetic people have a much higher rate of cardiovascular disease than healthy people. Therefore, heart and aortic tissues are target tissues in diabetic research. In recent years, the synthesis of new vanadium complexes and investigation of their antidiabetic/lowering effect on the blood glucose levels and antioxidant properties are increasing day by day. Our study aimed to examine the effects of synthesized oxovanadium (IV) complex of 2-[(2,4-dihydroxybenzylidene]hydrazine-1-[(N-(2-hydroxybenzylidene)](S-methyl)carbothioamide [VOL] on diabetic heart and aortic tissues, as well as in vitro lactate dehydrogenase (LDH) and myeloperoxidase (MPO) inhibition, antioxidant properties, and reducing power. Electrochemical characterization of the VOL was carried out by using Cyclic Voltammetry (CV) and Linear Sweep Voltammetry (LSV) methods. In addition, in silico drug-likeness and ADME prediction were also investigated. For in vivo study, male Swiss albino rats were randomly selected and separated into four groups which are control, control + VOL, diabetic and diabetic + VOL. After the experimental procedure, biochemical parameters were investigated in homogenates of heart and aorta tissues. The results showed that VOL has a protective effect on heart and aortic tissue against oxidative stress. According to electrochemical experiments, one reversible oxidative couple and one irreversible reductive response were observed for the complex. In addition, in vitro LDH and MPO inhibition of VOL was examined. It was found that VOL had a protective effect on heart and aortic tissues of diabetic rats, and caused the inhibition of LDH and MPO in in vitro studies. On the other hand, evaluating the synthesized VOL according to in silico drug-likeness and absorption, distribution, metabolism, and excretion (ADME) prediction, it was found that VOL has drug-like properties and exhibited high gastrointestinal absorption. The VOL had a therapeutic impact on the heart and aortic tissues of diabetic rats, according to the findings.
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Affiliation(s)
- Onur Ertik
- Division of Biochemistry, Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpaşa, 34320, Avcilar, Istanbul, Turkey.
| | - Sevim Tunali
- Division of Biochemistry, Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpaşa, 34320, Avcilar, Istanbul, Turkey
| | - Elif Turker Acar
- Division of Physical Chemistry, Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpaşa, 34320, Avcilar, Istanbul, Turkey
| | - Tulay Bal-Demirci
- Division of Inorganic Chemistry, Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpaşa, 34320, Avcilar, Istanbul, Turkey
| | - Bahri Ülküseven
- Division of Inorganic Chemistry, Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpaşa, 34320, Avcilar, Istanbul, Turkey
| | - Refiye Yanardag
- Division of Biochemistry, Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpaşa, 34320, Avcilar, Istanbul, Turkey
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Semiz S. Vanadium as potential therapeutic agent for COVID-19: A focus on its antiviral, antiinflamatory, and antihyperglycemic effects. J Trace Elem Med Biol 2022; 69:126887. [PMID: 34798510 PMCID: PMC8555110 DOI: 10.1016/j.jtemb.2021.126887] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 12/13/2022]
Abstract
An increasing evidence suggests that vanadium compounds are novel potential drugs in the treatment of diabetes, atherosclerosis, and cancer. Vanadium has also demonstrated activities against RNA viruses and is a promising candidate for treating acute respiratory diseases. The antidiabetic, antihypertensive, lipid-lowering, cardioprotective, antineoplastic, antiviral, and other potential effects of vanadium are summarized here. Given the beneficial antihyperglycemic and antiinflammatory effects as well as the potential mechanistic link between the COVID-19 and diabetes, vanadium compounds could be considered as a complement to the prescribed treatment of COVID-19. Thus, further clinical trials are warranted to confirm these favorable effects of vanadium treatment in COVID-19 patients, which appear not to be studied yet.
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Affiliation(s)
- Sabina Semiz
- College of Medicine and Health Sciences, Khalifa University, Abu Dhabi, United Arab Emirates; Association South East European Network for Medical Research-SOVE.
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3
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Wang H, Feng Q, Li C, Zhang H, Peng Y. Ultrasonographic study of hemodynamics and CEUS in the rhesus monkey kidney. Exp Anim 2021; 71:116-122. [PMID: 34803125 PMCID: PMC9130040 DOI: 10.1538/expanim.20-0194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Nonhuman primates share many developmental similarities with humans. As the world has recognized the rhesus monkey as a standard experimental monkey, studies of rhesus monkey are very
important and essential. The purpose of this study was to use gray-scale ultrasound, color Doppler flow imaging (CDFI), and contrast-enhanced ultrasound (CEUS) to study the ultrasound
appearance of adult healthy rhesus monkey kidneys and to investigate the relationship between renal ultrasound manifestations and body weight, gender, and the left and right kidneys. Thirty
adult healthy rhesus monkeys were studied in the experiments. The size of the kidney and the length and diameter of the renal artery were measured. The peak systolic velocity (PSV), end
diastolic velocity (EDV), and resistance index (RI) of the renal artery and intrarenal arteries were measured by CDFI. In CEUS, the time-intensity curve (TIC) was used to obtain
microvascular perfusion parameters. There were significant differences in renal size, diameter and length of the renal artery, and hemodynamics of the renal arteries between the different
weight groups. In CEUS, there were significant differences in area under curve (AUC), time from peak to one half (THP), intensity peak (PI), time to peak (TTP), mean transit time (MTT), and
wash-in-slope (WIS) between the different weight groups. There were no statistical differences between genders or the left and right kidneys. Our study provides valuable reference data for
the studies of the kidney and indicates that CEUS can be used to evaluate renal perfusion in rhesus monkeys.
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Affiliation(s)
- Hong Wang
- Department of Ultrasound, West China Hospital of Sichuan University
| | - Qipu Feng
- Regenerative Medicine Research Center, West China Hospital, Sichuan University
| | - Chao Li
- Oncology of Department, General Hospital of Western Theater Command PLA
| | - Huan Zhang
- Department of Ultrasound, West China Hospital of Sichuan University
| | - Yulan Peng
- Department of Ultrasound, West China Hospital of Sichuan University
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Effects of Vanadyl Complexes with Acetylacetonate Derivatives on Non-Tumor and Tumor Cell Lines. Molecules 2021; 26:molecules26185534. [PMID: 34577005 PMCID: PMC8466412 DOI: 10.3390/molecules26185534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 09/02/2021] [Accepted: 09/03/2021] [Indexed: 11/17/2022] Open
Abstract
Vanadium has a good therapeutic potential, as several biological effects, but few side effects, have been demonstrated. Evidence suggests that vanadium compounds could represent a new class of non-platinum, metal antitumor agents. In the present study, we aimed to characterize the antiproliferative activities of fluorescent vanadyl complexes with acetylacetonate derivates bearing asymmetric substitutions on the β-dicarbonyl moiety on different cell lines. The effects of fluorescent vanadyl complexes on proliferation and cell cycle modulation in different cell lines were detected by ATP content using the CellTiter-Glo Luminescent Assay and flow cytometry, respectively. Western blotting was performed to assess the modulation of mitogen-activated protein kinases (MAPKs) and relevant proteins. Confocal microscopy revealed that complexes were mainly localized in the cytoplasm, with a diffuse distribution, as in podocyte or a more aggregate conformation, as in the other cell lines. The effects of complexes on cell cycle were studied by cytofluorimetry and Western blot analysis, suggesting that the inhibition of proliferation could be correlated with a block in the G2/M phase of cell cycle and an increase in cdc2 phosphorylation. Complexes modulated mitogen-activated protein kinases (MAPKs) activation in a cell-dependent manner, but MAPK modulation can only partly explain the antiproliferative activity of these complexes. All together our results demonstrate that antiproliferative effects mediated by these compounds are cell type-dependent and involve the cdc2 and MAPKs pathway.
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Selvaraj S, Krishnan UM. Vanadium-Flavonoid Complexes: A Promising Class of Molecules for Therapeutic Applications. J Med Chem 2021; 64:12435-12452. [PMID: 34432460 DOI: 10.1021/acs.jmedchem.1c00405] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Several reports have revealed the superior biological activity of metal ion-flavonoid complexes when compared with the parent flavonoid. Among the different metal ions explored, vanadium and its compounds are in the forefront because of their anticancer and antidiabetic properties. However, the toxicity of vanadium-based ions and their inorganic derivatives limits their therapeutic applications. Complexation of vanadium with flavonoids not only reduces its adverse effects but also augments its biological activity. This Review discusses the nature of coordination in vanadium-flavonoid complexes, their structure-activity correlations, with special emphasis on their therapeutic activities. Several investigations suggest that the superior biological activity of vanadium complexes arise because of their ability to regulate metabolic pathways distinct from those acted upon by vanadium alone. These studies serve to decipher the underlying molecular mechanism of vanadium-flavonoid complexes that can be explored further for generating a series of novel compounds with improved pharmacological and therapeutic performance.
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Abstract
The vanadium(V) complexes have been investigated as potential anticancer agents which makes it essential to evaluate their toxicity for safe use in the clinic. The large-scale synthesis and the acute oral toxicity in mice of the oxidovanadium(V) Schiff base catecholate complex, abbreviated as [VO(HSHED)dtb] containing a redox-active ligand with tridentate Schiff base (HSHED = N-(salicylideneaminato)-N’-(2-hydroxyethyl)-1,2-ethylenediamine) and dtb = 3,5-di-(t-butyl)catechol ligands were carried out. The body weight, food consumption, water intake as well biomarkers of liver and kidney toxicity of the [VO(HSHED)dtb] were compared to the precursors, sodium orthovanadate, and free ligand. The 10-fold scale-up synthesis of the oxidovanadium(V) complex resulting in the preparation of material in improved yield leading to 2–3 g (79%) material suitable for investigating the toxicity of vanadium complex. No evidence of toxicity was observed in animals when acutely exposed to a single dose of 300 mg/kg for 14 days. The toxicological results obtained with biochemical and hematological analyses did not show significant changes in kidney and liver parameters when compared with reference values. The low oral acute toxicity of the [VO(HSHED)dtb] is attributed to redox chemistry taking place under biological conditions combined with the hydrolytic stability of the oxidovanadium(V) complex. These results document the design of oxidovanadium(V) complexes that have low toxicity but still are antioxidant and anticancer agents.
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Prabhakar PK, Sivakumar PM. Protein Tyrosine Phosphatase 1B Inhibitors: A Novel Therapeutic Strategy for the Management of type 2 Diabetes Mellitus. Curr Pharm Des 2020; 25:2526-2539. [PMID: 31333090 DOI: 10.2174/1381612825666190716102901] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 07/04/2019] [Indexed: 12/26/2022]
Abstract
Diabetes is one of the most common endocrine non-communicable metabolic disorders which is mainly caused either due to insufficient insulin or inefficient insulin or both together and is characterized by hyperglycemia. Diabetes emerged as a serious health issue in the industrialized and developing country especially in the Asian pacific region. Out of the two major categories of diabetes mellitus, type 2 diabetes is more prevalent, almost 90 to 95% cases, and the main cause of this is insulin resistance. The main cause of the progression of type 2 diabetes mellitus has been found to be insulin resistance. The type 2 diabetes mellitus may be managed by the change in lifestyle, physical activities, dietary modifications and medications. The major currently available management strategies are sulfonylureas, biguanides, thiazolidinediones, α-glucosidase inhibitors, dipeptidyl peptidase-IV inhibitors, and glucagon-like peptide-1 (GLP-1) agonist. Binding of insulin on the extracellular unit of insulin receptor sparks tyrosine kinase of the insulin receptor which induces autophosphorylation. The phosphorylation of the tyrosine is regulated by insulin and leptin molecules. Protein tyrosine phosphatase-1B (PTP1B) works as a negative governor for the insulin signalling pathways, as it dephosphorylates the tyrosine of the insulin receptor and suppresses the insulin signalling cascade. The compounds or molecules which inhibit the negative regulation of PTP1B can have an inductive effect on the insulin pathway and finally help in the management of diabetes mellitus. PTP1B could be an emerging therapeutic strategy for diabetes management. There are a number of clinical and basic research results which suggest that induced expression of PTP1B reduces insulin resistance. In this review, we briefly elaborate and explain the place of PTP1B and its significance in diabetes as well as a recent development in the PTP1B inhibitors as an antidiabetic therapy.
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Affiliation(s)
- Pranav K Prabhakar
- Research & Development, Lovely Professional University, Phagwara, Punjab-144411, India
| | - Ponnurengam M Sivakumar
- Center for Molecular Biology, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang, Vietnam
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Banerjee A, Mohanty M, Lima S, Samanta R, Garribba E, Sasamori T, Dinda R. Synthesis, structure and characterization of new dithiocarbazate-based mixed ligand oxidovanadium(iv) complexes: DNA/HSA interaction, cytotoxic activity and DFT studies. NEW J CHEM 2020. [DOI: 10.1039/d0nj01246g] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, structure and characterization of mixed ligand oxidovanadium(iv) complexes [VIVOL1–2(LN–N)] (1–3) are reported. With a view to evaluating their biological activity, their DNA/HSA interaction and cytotoxicity activity have been explored.
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Affiliation(s)
- Atanu Banerjee
- Department of Chemistry
- National Institute of Technology
- Rourkela
- India
| | - Monalisa Mohanty
- Department of Chemistry
- National Institute of Technology
- Rourkela
- India
| | - Sudhir Lima
- Department of Chemistry
- National Institute of Technology
- Rourkela
- India
| | - Rajib Samanta
- Department of Chemistry
- National Institute of Technology
- Rourkela
- India
| | - Eugenio Garribba
- Dipartimento di Chimica e Farmacia
- Università di Sassari
- I-07100 Sassari
- Italy
| | - Takahiro Sasamori
- Graduate School of Natural Sciences
- Nagoya City University Yamanohata 1
- Nagoya
- Japan
| | - Rupam Dinda
- Department of Chemistry
- National Institute of Technology
- Rourkela
- India
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Sabahi MM, Ahmadi SA, Mahjub R, Ranjbar A. Oxidative Toxicity in Diabetes Mellitus: The Role of Nanoparticles and Future Therapeutic Strategies. PRECISION NANOMEDICINE 2019. [DOI: 10.33218/prnano2(4)190809.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Diabetes mellitus is one of the most common chronic medical conditions in the world. Increasing evidence suggests that chronic hyperglycemia can cause excessive production of free radicals, particularly reactive oxygen species (ROS). Free radicals play important roles in tissue damage in diabetes. The relationship between exposure to nanoparticles (NPs) and diabetes has been reported in many previous studies. Evaluation of the potential benefits and toxic effects of NPs on diabetic disorders is of importance. This review highlights studies on the relationship between NPs and oxidative stress (OS) as well as the possible mechanisms in diabetic animal models and humans.
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Affiliation(s)
| | | | - Reza Mahjub
- 3Department of Pharmaceutics, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Akram Ranjbar
- 4Department of Toxicology and Pharmacology, Hamadan University of Medical Sciences, Hamadan, Iran
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Tripathi D, Mani V, Pal RP. Effect of Vanadium Supplementation on Production Performance, Nutrient Utilization, Plasma Mineral Concentration, and Mineral Balance in Lactating Goats. Biol Trace Elem Res 2019; 188:412-418. [PMID: 29971565 DOI: 10.1007/s12011-018-1426-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 06/26/2018] [Indexed: 01/23/2023]
Abstract
Vanadium (V) has not been elucidated as an essential mineral in ruminants, though in lower organisms and rat model, its role is well known as insulin-a mimetic agent for catalyzing enzymatic activities. The objective of this study was to determine the effect of V supplementation on production performance, milk composition, and mineral profile in lactating goats. Twenty-four crossbred goats (body weight 34.83 ± 0.25 kg) were blocked in four groups and randomly assigned to four treatment groups (n = 6) on body weight and milk yield basis. All the animals were kept on similar feeding regimen except that different treatment groups were supplemented with 0, 2, 4, and 6 ppm inorganic V/kg DM. Feed intake, milk yield, milk composition, nutrient utilization, minerals in plasma and milk, and their balance studies post vanadium supplementation were observed during the 150-day experimental period. V supplementation did not change dry matter intake (DMI), milk yield, and composition during the experimental period. Calcium levels in plasma were improved (P < 0.05) on vanadium supplementation. Nutrient digestibility remained similar among goats fed on basal or V-supplemented diets. Blood and milk V concentration showed a positive correlation with supplemental V levels but no difference was observed in levels of other minerals. The results of present findings indicated that up to the supplemented level, dietary inorganic V does not affect the production and mineral profile in milk and plasma.
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Affiliation(s)
- Deepika Tripathi
- Animal Nutrition Division, National Dairy Research Institute, Karnal, Haryana, 132001, India.
| | - Veena Mani
- Animal Nutrition Division, National Dairy Research Institute, Karnal, Haryana, 132001, India
| | - Ravi Prakash Pal
- Animal Nutrition Division, National Dairy Research Institute, Karnal, Haryana, 132001, India
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Abstract
Ultra-trace elements or occasionally beneficial elements (OBE) are the new categories of minerals including vanadium (V). The importance of V is attributed due to its multifaceted biological roles, i.e., glucose and lipid metabolism as an insulin-mimetic, antilipemic and a potent stress alleviating agent in diabetes when vanadium is administered at lower doses. It competes with iron for transferrin (binding site for transportation) and with lactoferrin as it is secreted in milk also. The intracellular enzyme protein tyrosine phosphatase, causing the dephosphorylation at beta subunit of the insulin receptor, is inhibited by vanadium, thus facilitating the uptake of glucose inside the cell but only in the presence of insulin. Vanadium could be useful as a potential immune-stimulating agent and also as an antiinflammatory therapeutic metallodrug targeting various diseases. Physiological state and dose of vanadium compounds hold importance in causing toxicity also. Research has been carried out mostly on laboratory animals but evidence for vanadium importance as a therapeutic agent are available in humans and large animals also. This review examines the potential biochemical and molecular role, possible kinetics and distribution, essentiality, immunity, and toxicity-related study of vanadium in a biological system.
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Affiliation(s)
| | - Veena Mani
- National Dairy Research Institute, Karnal, Haryana, India
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Ni L, Zhao H, Tao L, Li X, Zhou Z, Sun Y, Chen C, Wei D, Liu Y, Diao G. Synthesis, in vitro cytotoxicity, and structure-activity relationships (SAR) of multidentate oxidovanadium(iv) complexes as anticancer agents. Dalton Trans 2018; 47:10035-10045. [PMID: 29974097 DOI: 10.1039/c8dt01778f] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Multidentate oxidovanadium(iv) complexes with different geometric configurations [VO(ox)(bpy)(H2O)] 1, [VO(ox)(phen)(H2O)] 2, [VO(ida)(bpy)]·2H2O 3, (phen)[VO(ida)(phen)]·4H2O 4, and (Hphen)[VO(H2O)(nta)]·2H2O 5 [ox = oxalic acid, bpy = 2,2'-bipyridine, phen = 1,10-phenanthroline, ida = iminodiacetic acid, nta = nitrilotriacetic acid] have been obtained from the reactions of oxidovanadium sulfate or vanadium pentoxide with oxalates, amino-polycarboxylates and N-heterocyclic ligands in neutral solution by the hydrothermal method, and have been fully characterized by elemental, thermogravimetric analyses and single crystal X-ray diffraction, as well as a wide range of spectroscopic techniques such as FT-IR, UV/Vis, NMR, ESI-MS. The anti-tumor properties of oxidovanadium compounds 1-5 were further evaluated in human HepG2 and SMMC-7721 hepatocellular carcinoma cell lines in vitro. The profiles of cytotoxicity, cell cycle distribution, as well as cell apoptosis upon test compound exposure, were determined by MTT and flow cytometry assays. Compound 2 exhibited a much higher anti-tumor activity than others. The IC50 values of 2 were 5.34 ± 0.034 μM and 29.07 ± 0.017 μM in SMMC-7721 and HepG2 cells after 48 h treatment, respectively. Furthermore, compound 2 could significantly arrest the cell cycle in the S and G2/M phases and further induce cell apoptosis in a dose-dependent manner. The structure-activity relationship (SAR) studies revealed that structural elements, for example, metal components, variations of coordination mode, labile water molecules, chelated ligands etc., probably exert an essential cooperative effect on the antitumor activity. In short, these findings not only provide an accessible model system to exploit V-based complexes as potential simple, safe and effective multifunctional antitumor agents, but also open up a rational approach to shed new light on the selection and optimization of ideal drug candidates.
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Affiliation(s)
- Lubin Ni
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, Jiangsu, People's Republic of China.
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Pal RP, Mani V, Tripathi D, Kumar R, Kewalramani NJ. Influence of Feeding Inorganic Vanadium on Growth Performance, Endocrine Variables and Biomarkers of Bone Health in Crossbred Calves. Biol Trace Elem Res 2018; 182:248-256. [PMID: 28735384 DOI: 10.1007/s12011-017-1095-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 07/06/2017] [Indexed: 11/28/2022]
Abstract
The nutritional essentialities of transition element vanadium (V) as micro-nutrient in farm animals have not yet been established, though in rat model, vanadium as vanadate has been reported to exert insulin-mimetic effect and shown to be needed for proper development of bones. The objective of this study was to determine the effect of V supplementation on growth performance, plasma hormones and bone health status in calves. Twenty-four crossbred calves (body weight 72.83 ± 2.5 kg; age 3-9 months) were blocked in four groups and randomly assigned to four treatment groups (n = 6) on body weight and age basis. Experimental animals were kept on similar feeding regimen except that different groups were supplemented with either 0, 3, 6 or 9 ppm inorganic V/kg DM. Effect of supplementation during 150-day experimental period was observed on feed intake, body weight gain, feed efficiency, body measures, endocrine variables, plasma glucose and biomarkers of bone health status. Supplementation of V did not change average daily gain (ADG), dry matter intake (DMI), feed efficiency and body measures during the experimental period. During the post-V supplementation period plasma insulin-like growth factor-1 (IGF-1), triiodothyronine (T3) and thyroxin (T4) concentrations were increased and observed highest in 9 mg V/kg DM fed calves; however, levels of insulin, glucose, parathyroid hormone (PTH) and calcitonin hormones remained similar among calves fed on basal or V-supplemented diets. Bone alkaline phosphatase (Bone-ALP) concentration was increased (P < 0.05); however, plasma protein tyrosine phosphatase (PTP) level decreased (P < 0.05) in 6 and 9 mg V/kg DM supplemented groups. Plasma hydroxyproline (Hyp) and tartrate-resistant acid phosphatase (TRAP) concentration were unchanged by V supplementation. Blood V concentration showed positive correlation with supplemental V levels. These results suggest that V may play a role in modulation of the action of certain endocrine variables and biomarkers of bone health status in growing crossbred calves.
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Affiliation(s)
- Ravi Prakash Pal
- Animal Nutrition Division, ICAR-National Dairy Research Institute, Karnal, 132001, India
| | - Veena Mani
- Animal Nutrition Division, ICAR-National Dairy Research Institute, Karnal, 132001, India.
| | - Deepika Tripathi
- Animal Nutrition Division, ICAR-National Dairy Research Institute, Karnal, 132001, India
| | - Rajesh Kumar
- Animal Nutrition Division, ICAR-National Dairy Research Institute, Karnal, 132001, India
| | - Neelam J Kewalramani
- Animal Nutrition Division, ICAR-National Dairy Research Institute, Karnal, 132001, India
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Panchal SK, Wanyonyi S, Brown L. Selenium, Vanadium, and Chromium as Micronutrients to Improve Metabolic Syndrome. Curr Hypertens Rep 2017; 19:10. [PMID: 28197835 DOI: 10.1007/s11906-017-0701-x] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Trace metals play an important role in the proper functioning of carbohydrate and lipid metabolism. Some of the trace metals are thus essential for maintaining homeostasis, while deficiency of these trace metals can cause disorders with metabolic and physiological imbalances. This article concentrates on three trace metals (selenium, vanadium, and chromium) that may play crucial roles in controlling blood glucose concentrations possibly through their insulin-mimetic effects. For these trace metals, the level of evidence available for their health effects as supplements is weak. Thus, their potential is not fully exploited for the target of metabolic syndrome, a constellation that increases the risk for cardiovascular disease and type 2 diabetes. Given that the prevalence of metabolic syndrome is increasing throughout the world, a simpler option of interventions with food supplemented with well-studied trace metals could serve as an answer to this problem. The oxidation state and coordination chemistry play crucial roles in defining the responses to these trace metals, so further research is warranted to understand fully their metabolic and cardiovascular effects in human metabolic syndrome.
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Affiliation(s)
- Sunil K Panchal
- Institute for Agriculture and the Environment, University of Southern Queensland, QLD, Toowoomba, 4350, Australia
| | - Stephen Wanyonyi
- Institute for Agriculture and the Environment, University of Southern Queensland, QLD, Toowoomba, 4350, Australia
| | - Lindsay Brown
- Institute for Agriculture and the Environment, University of Southern Queensland, QLD, Toowoomba, 4350, Australia.
- School of Health and Wellbeing, University of Southern Queensland, QLD, Toowoomba, 4350, Australia.
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Farid O, Hebi M, Ajebli M, Hidani AE, Eddouks M. Antidiabetic effect of Ruta montana L. in streptozotocin-induced diabetic rats. J Basic Clin Physiol Pharmacol 2017; 28:275-282. [PMID: 28121617 DOI: 10.1515/jbcpp-2016-0030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 10/26/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Ruta montana (L.) is known as a medicinal plant with many beneficial effects, including those that can be used in the treatment of diabetes. The objective of the study was to investigate the antidiabetic effect of this plant in diabetic rat. METHODS This study investigated the effects of an aerial part aqueous extract (APAE) of Ruta montana (L.) (RM) at a dose of 5 mg/kg on blood glucose levels in normal and streptozotocin (STZ)-induced diabetic rats. Histopathological changes were also evaluated in liver and pancreas both in normal and STZ-induced rats. The effect of this aqueous extract on glucose tolerance was demonstrated in normal rats. Furthermore, the relative organ weight (ROW) of liver, kidney, pancreas, and brown adipose tissue were evaluated after 15 days of daily oral administration of the aqueous extract. RESULTS Both single and repeated oral doses of APAE (5 mg/kg) produced significant reductions in the blood glucose levels in normal and STZ-induced rats. Oral glucose tolerance test results showed that, after the administration of 3 g/kg of glucose, RM APAE (5 mg/kg) improved the increase in blood glucose levels in normal rats at the 30th min (p<0.01) and 90th min (p<0.001). CONCLUSIONS RM APAE exhibits a potent hypoglycemic effect in normal rats and an antidiabetic effect in STZ-induced rats. This finding supports the use of this plant in traditional Moroccan medicine for diabetes management.
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Affiliation(s)
- Omar Farid
- Faculty of Sciences and Techniques Errachidia, Moulay Ismail University, Boutalamine, Errachidia
| | - Morad Hebi
- Faculty of Sciences and Techniques Errachidia, Moulay Ismail University, Boutalamine, Errachidia
| | - Mohammed Ajebli
- Faculty of Sciences and Techniques Errachidia, Moulay Ismail University, Boutalamine, Errachidia
| | - Ahmed El Hidani
- Faculty of Sciences and Techniques Errachidia, Moulay Ismail University, Boutalamine, Errachidia
| | - Mohamed Eddouks
- Faculty of Sciences and Techniques Errachidia, Moulay Ismail University, Boutalamine, Errachidia
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Effects of vanadium supplementation on performance and metabolic parameters in periparturient dairy cows. Anim Feed Sci Technol 2016. [DOI: 10.1016/j.anifeedsci.2016.03.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Phanse MA, Patil MJ, Abbulu K. Synthesis, characterization and evaluation of the suppression of insulin resistance in Type-II diabetes mellitus animals by treatment with metal complex. Saudi J Biol Sci 2016; 23:420-5. [PMID: 27081369 PMCID: PMC4818326 DOI: 10.1016/j.sjbs.2015.08.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Revised: 08/26/2015] [Accepted: 08/26/2015] [Indexed: 11/05/2022] Open
Abstract
The present study is characterized toward thespesone isolation from Thespesia populnea (Malvaceae). Subsequently it was modified and characterized to study its effect on diabetes related symptoms. The complex is administered to diabetes induced mice with the doses of 5, 10 and 20 mg/kg, p.o. and the effect of complex on the level of body weight, lipid profile and blood glucose was studied after 22 days. The results have indicated that diabetic mice show a significant (p < 0.01) decrease in the level of serum triglyceride, plasma glucose and increase in body weight. Hence the present investigation reveals that newly synthesized complex is useful in the management of Type-II diabetes mellitus because of its ability to reduce insulin resistance.
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Affiliation(s)
- Mohini A. Phanse
- Modern College of Pharmacy, Nigdi, Pune, India
- Jawaharlal Nehru Technological University, Hyderabad, A.P., India
| | | | - Konde Abbulu
- Mallareddy Institute of Pharmaceutical Sciences, Hyderabad, India
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Scior T, Guevara-Garcia JA, Do QT, Bernard P, Laufer S. Why Antidiabetic Vanadium Complexes are Not in the Pipeline of "Big Pharma" Drug Research? A Critical Review. Curr Med Chem 2016; 23:2874-2891. [PMID: 26997154 PMCID: PMC5068500 DOI: 10.2174/0929867323666160321121138] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 03/14/2016] [Accepted: 03/18/2016] [Indexed: 12/18/2022]
Abstract
Public academic research sites, private institutions as well as small companies have made substantial contributions to the ongoing development of antidiabetic vanadium compounds. But why is this endeavor not echoed by the globally operating pharmaceutical companies, also known as "Big Pharma"? Intriguingly, today's clinical practice is in great need to improve or replace insulin treatment against Diabetes Mellitus (DM). Insulin is the mainstay therapeutically and economically. So, why do those companies develop potential antidiabetic drug candidates without vanadium (vanadium- free)? We gathered information about physicochemical and pharmacological properties of known vanadium-containing antidiabetic compounds from the specialized literature, and converted the data into explanations (arguments, the "pros and cons") about the underpinnings of antidiabetic vanadium. Some discoveries were embedded in chronological order while seminal reviews of the last decade about the Medicinal chemistry of vanadium and its history were also listed for further understanding. In particular, the concepts of so-called "noncomplexed or free" vanadium species (i.e. inorganic oxido-coordinated species) and "biogenic speciation" of antidiabetic vanadium complexes were found critical and subsequently documented in more details to answer the question.
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Affiliation(s)
- Thomas Scior
- Department of Pharmacy, Faculty of Chemical Sciences, University Benemerita Universidad Autonoma de Puebla, P.O. Box: 72570, City of Puebla, Country Mexico.
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Tamrakar AK, Maurya CK, Rai AK. PTP1B inhibitors for type 2 diabetes treatment: a patent review (2011 - 2014). Expert Opin Ther Pat 2014; 24:1101-15. [PMID: 25120222 DOI: 10.1517/13543776.2014.947268] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
INTRODUCTION Protein tyrosine phosphatase 1B (PTP1B) plays an important role in the negative regulation of insulin signal transduction pathway and has emerged as novel therapeutic strategy for the treatment of type 2 diabetes. PTP1B inhibitors enhance the sensibility of insulin receptor (IR) and have favorable curing effect for insulin resistance-related diseases. A large number of PTP1B inhibitors, either synthetic or isolated as bioactive agents from natural products, have developed and investigated for their ability to stimulate insulin signaling. AREAS COVERED This review includes an updated summary (2011 - 2014) of PTP1B inhibitors that have been published in patent applications, with an emphasis on their chemical structure, mode of action and therapeutic outcomes. The usefulness of PTP1B inhibitors as pharmaceutical agents for the treatment of type 2 diabetes is also discussed. EXPERT OPINION PTP1B inhibitors show beneficial effects to enhance sensibility of IR by restricting the activity of enzyme and have favorable curing effects. However, structural homologies in the catalytic domain of PTP1B with other protein tyrosine phosphatases (PTPs) like leukocyte common antigen-related, CD45, SHP-2 and T-cell-PTP present a challenging task of achieving selectivity. Thus, for therapeutic application of PTP1B inhibitors, highly selective molecules exhibiting desired effects without side effects are expected to find clinical application.
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Affiliation(s)
- Akhilesh Kumar Tamrakar
- CSIR-Central Drug Research Institute, Division of Biochemistry , Sector-10, Jankipuram Extension, Sitapur Road, Lucknow-226001 , India +91 0522 2772550 Ext. 4635 ; +91 0522 2771941 ; CSIR-CDRI communication number: 8743
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Pillai SI, Subramanian SP, Kandaswamy M. Antidyslipidemic effect of a novel vanadium-3-hydroxy flavone complex in streptozotocin-induced experimental diabetes in rats. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.bionut.2013.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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21
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Wine, Food and Health. WINE SCIENCE 2014. [PMCID: PMC7173591 DOI: 10.1016/b978-0-12-381468-5.00012-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Wine has historically been associated with religious rights, used as a salubrious beverage, employed as a medication as well as a medicinal solvent, and consumed as a food accompaniment. It is the latter that is most intimately associated in the minds of most modern consumers. Despite this, there is little flavor commonality on which pairing could be based. The first section of the chapter examines this feature, and wine’s primary role as a palate cleanser and food condiment. The synergistic role of food and wine in suppressing each other’s least pleasant attributes is also explained. The final section deals with the latest evidence relating to the many beneficial health effects of moderate wine consumption, shortfalls in the data, headache induction, dental erosion, and conditions under which wine intake is contraindicated.
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Gomathi Sankareswari V, Vinod D, Mahalakshmi A, Alamelu M, Kumaresan G, Ramaraj R, Rajagopal S. Interaction of oxovanadium(iv)–salphen complexes with bovine serum albumin and their cytotoxicity against cancer. Dalton Trans 2014; 43:3260-72. [DOI: 10.1039/c3dt52505h] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An oxovanadium(iv)–salphen complex acts as a probe for bovine serum albumin and shows cytotoxicity against cancer cells.
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Affiliation(s)
| | - Devaraj Vinod
- College of Pharmacy
- Madras Medical College
- Chennai – 600003, India
| | | | - Meena Alamelu
- School of Biological Sciences
- Madurai Kamaraj University
- Madurai, India
| | - Ganesan Kumaresan
- School of Biological Sciences
- Madurai Kamaraj University
- Madurai, India
| | - Ramasamy Ramaraj
- School of Chemistry
- Madurai Kamaraj University
- Madurai – 625 021, India
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Synthesis, Characterization, and Antibacterial Studies of Pd(II) and Pt(II) Complexes of Some Diaminopyrimidine Derivatives. Bioinorg Chem Appl 2013; 2013:549549. [PMID: 23573071 PMCID: PMC3610396 DOI: 10.1155/2013/549549] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 01/21/2013] [Accepted: 02/04/2013] [Indexed: 11/17/2022] Open
Abstract
Pd(II) and Pt(II) complexes of trimethoprim and pyrimethamine were synthesized and characterized by elemental analysis, UV-Vis, FTIR, and NMR spectroscopy. The complexes are formulated as four coordinate square planar species containing two molecules of the drugs and two chloride or thiocyanate ions. The coordination of the metal ions to the pyrimidine nitrogen atom of the drugs was confirmed by spectroscopic analyses. The complexes were screened for their antibacterial activities against eight bacterial isolates. They showed varied activities with the active metal complexes showing more enhanced inhibition than either trimethoprim or pyrimethamine. The Pd(II) complexes of pyrimethamine showed unique inhibitory activities against P. aeruginosa and B. pumilus, and none of the other complexes or the drugs showed any activity against these bacteria isolates. The MIC and MBC determinations revealed that these Pd(II) complexes are the most active. Structure activity relationship showed that Pt(II) complexes containing chloride ions are more active, while for Pd(II) complexes containing thiocyanate ions showed more enhanced activity than those containing chloride ions.
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Palm CA, Feldman EC. Oral Hypoglycemics in Cats with Diabetes Mellitus. Vet Clin North Am Small Anim Pract 2013; 43:407-15. [DOI: 10.1016/j.cvsm.2012.12.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Pillai SI, Subramanian SP, Kandaswamy M. A novel insulin mimetic vanadium-flavonol complex: synthesis, characterization and in vivo evaluation in STZ-induced rats. Eur J Med Chem 2013; 63:109-17. [PMID: 23466606 DOI: 10.1016/j.ejmech.2013.02.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2012] [Revised: 01/31/2013] [Accepted: 02/02/2013] [Indexed: 01/28/2023]
Abstract
Since 1985, when Heyliger et al., first demonstrated a serendipitous discovery that oral administration of 0.8 mg/ml of sodium orthovanadate in drinking water to streptozotocin-induced diabetic rats resulted in normoglycemia, numerous extensive studies have been pursued on the anti-diabetic and insulinomimetic actions of vanadium. The acceptance of vanadium compounds as promising therapeutic antidiabetic agents has been slowed due to the concern for chronic toxicity associated with vanadium accumulation. In order to circumvent the toxic effects of vanadium, we have taken up a combinational approach wherein a novel vanadium-flavonol complex was synthesized, characterized and its toxic as well as insulin mimetic potential was evaluated in STZ-induced experimental diabetes in rats. The results indicate that the complex is non-toxic and possess anti-diabetic activity.
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Affiliation(s)
- Subramanian Iyyam Pillai
- Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, Tamil Nadu, India
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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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Baquer NZ, Gupta D, Raju J. Regulation of metabolic pathways in liver and kidney during experimental diabetes: Effects of antidiabetic compounds. Indian J Clin Biochem 2012; 13:63-80. [PMID: 23105185 DOI: 10.1007/bf02867866] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Diabetes has been classified as a disease of glucose overproduction by tissues, mainly liver and glucose underutilization by insulin requiring tissues like liver, adipose and muscle due to lack of insulin. There is, however, glucose over utilization in tissues not dependent on insulin for glucose transport like kidney, nerve and brain. There are serious complications due to this excess glucose in these tissues and their reversal is important for a good metabolic control and normalisation of other parameters. Insulin, trace metals and some plant extracts have been used to see the reversal effects of the complications of diabetes in liver and kidney in experimental diabetes. Almost complete reversal of the metabolic changes has been achieved in the activities of key enzymes of metabolic pathways in liver and kidney and an effective glucose control has been achieved suggesting a combination of therapies in the treatment of metabolic disturbance of the diabetic state.
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Affiliation(s)
- N Z Baquer
- Hormone and Drug Research Laboratory, School of Life Sciences, Jawaharlal Nehru University, 110 067 New Delhi
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Jeju ground water containing vanadium induced immune activation on splenocytes of low dose γ-rays-irradiated mice. Food Chem Toxicol 2012; 50:2097-105. [DOI: 10.1016/j.fct.2012.03.041] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 02/18/2012] [Accepted: 03/07/2012] [Indexed: 11/17/2022]
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Hypoglycemic Properties of Oxovanadium (IV) Coordination Compounds with Carboxymethyl-Carrageenan and Carboxymethyl-Chitosan in Alloxan-Induced Diabetic Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 2011:691067. [PMID: 21804857 PMCID: PMC3144733 DOI: 10.1155/2011/691067] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Accepted: 06/01/2011] [Indexed: 11/17/2022]
Abstract
In order to avoid low absorption, incorporation, and undesirable side effects of inorganic oxovanadium compounds, the antidiabetic activities of organic oxovanadium (IV) compounds in alloxan-induced diabetic mice were investigated. Vanadyl carboxymethyl carrageenan (VOCCA) and vanadyl carboxymethyl chitosan (VOCCH) were synthesized and administrated through intragastric administration in different doses for 20 days in alloxan-induced diabetic mice. Glibenclamide was administrated as the positive control. Our results showed that low-dose group, middle-dose group, and high-dose group of VOCCA and VOCCH could significantly reduce the levels of blood glucose (P < 0.05) compared with untreated group, but not in normal mice. Besides, high-dose groups of VOCCA and VOCCH exhibited more significant hypoglycemic activities (P < 0.01). After treated with VOCCH, the oral glucose tolerance of high-dose group of VOCCH was improved compared with model control group (P < 0.05).
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Boulassel B, Sadeg N, Roussel O, Perrin M, Belhadj-Tahar H. Fatal poisoning by vanadium. Forensic Sci Int 2010; 206:e79-81. [PMID: 21130588 DOI: 10.1016/j.forsciint.2010.10.027] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Revised: 10/17/2010] [Accepted: 10/28/2010] [Indexed: 10/18/2022]
Abstract
We report here a fatal intoxication case involving ammonium vanadate. A 24-year-old woman was admitted to the Emergency Department for abdominal pain, nausea, vomiting, multiple daily diarrheas, hypoglycaemia (0.2g/L) and severe acute renal failure with glomerular filtration rate estimated at 21 ml/min. This patient had taken an undetermined amount of ammonium vanadate 12h after ingesting. She died next morning in the context of respiratory distress despite intensive care and oxygen therapy. The autopsy revealed widespread asphyxia syndrome and erosive gastritis. Determination of vanadium concentration in blood was carried out by means of mass spectrometer (ICP-MS) using rhodium ((103)Rh) as the internal standard. The vanadium concentration was 6.22 mg/L, corresponding to 6000 times higher than normal concentration in the general population. The latency and the brutality of clinical picture degradation seem to be in consideration of systemic poisoning by vanadium leading to inhibition of the cellular respiratory process.
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Scibior A, Zaporowska H. Effects of combined vanadate and magnesium treatment on erythrocyte antioxidant defence system in rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2010; 30:153-161. [PMID: 21787646 DOI: 10.1016/j.etap.2010.05.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Revised: 05/07/2010] [Accepted: 05/11/2010] [Indexed: 05/31/2023]
Abstract
The effect of vanadate and magnesium treatment on erythrocyte defence system was studied in outbred 2-month-old, albino male Wistar rats (14 rats/each group) which daily received: Group I (Control)-deionized water to drink; Group II-water solution of sodium metavanadate (NaVO(3); SMV) at a concentration of 0.125mgV/mL; Group III-water solution of magnesium sulfate (MgSO(4); MS) at a concentration of 0.06mgMg/mL, Group IV-water solution of SMV-MS at the same concentrations over a 12-week time. The fluid intake and the concentration of reduced glutathione (GSH) as well as the activity of Cu, Zn-superoxide dismutase (Cu, Zn-SOD), catalase (CAT) and glutathione reductase (GR) were significantly decreased in the rats receiving SMV alone (Group II) or in combination with MS (Group IV) compared with Groups I and III. The cellular glutathione peroxidase (cGSH-Px) activity was unchanged in all the treated groups. The activity of glutathione S-transferase (GST) fell in the animals in Group II, compared with the rats in Groups I, III and IV; whereas in the rats in Group III its activity was higher than in the control animals. These results showed that V (as SMV) consumed by the rats with drinking water at a dose of 12mgV/kg b.w./24h for 12 weeks may attenuate defence system in rats' erythrocytes (RBCs), which is probably a consequence of vanadium pro-oxidant potential. Therefore, reactive oxygen species (ROS) are suggested to be involved in the alterations in antioxidant defence system in these cells. Mg (as MS) at the dose ingested (6mgMg/kg b.w./24h) at co-exposure to SMV was not able to counteract its deleterious effect. The results also provide evidence that V-Mg interactions may be involved in the decrease of erythrocyte GR activity and Mg concentration in the plasma under concomitant treatment with both metals at the doses of 12.6mgV and 6mgMg/kg b.w./24h.
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Affiliation(s)
- Agnieszka Scibior
- Department of Cell Biology, Institute of Environmental Protection, John Paul II Catholic University of Lublin, Kraśnicka Ave 102, 20-718 Lublin, Poland
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Laizé V, Tiago DM, Aureliano M, Cancela ML. New insights into mineralogenic effects of vanadate. Cell Mol Life Sci 2009; 66:3831-6. [PMID: 19760363 PMCID: PMC11115574 DOI: 10.1007/s00018-009-0137-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2009] [Revised: 08/04/2009] [Accepted: 08/18/2009] [Indexed: 02/07/2023]
Affiliation(s)
- Vincent Laizé
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal.
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Zhao GP, Zhou ZG, Zheng XL. Inhibition of phosphatase of regeneration liver-3 suppresses the migration of Colo-320 colon cancer cells. Shijie Huaren Xiaohua Zazhi 2009; 17:2147-2151. [DOI: 10.11569/wcjd.v17.i21.2147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of sodium orthovanadate (SoV), an inhibitor of phosphatase of regeneration liver-3 (PRL-3), on the migration of Colo-320 colon cancer cells.
METHODS: The expression levels of PRL-3 protein in seven colorectal cancer cell lines were examined by Western blot to screen the line with the highest expression of PRL-3 protein. The screened cell line was employed in subsequent drug intervention experiments. A scratch wound assay was performed to examine the effect of SoV (at a dose of 0.5 μmol/L) on the migration of Colo-320 cells. The migration distance of cells was determined under an inverted microscope. The expression of PRL-3 mRNA in cells treated with SoV was detected by in situ hybridization.
RESULTS: Western blot analysis indicated that the colon cancer cell line Colo-320 had the highest expression level of PRL-3. The scratch wound assay showed that the migration distance of Colo-320 cells treated with SoV for 48 hours was significantly lower than that of control cells. The migration rate of SoV-treated cells was also significantly lower than that of control cells (2.84 ± 6.78 μm/h vs 39.12 ± 10.11 μm/h, P < 0.00001). In situ hybridization analysis showed that PRL-3 mRNA was highly expressed in control cells but not in SoV-treated cells.
CONCLUSION: SoV can effectively inhibit the migration of Colo-320 cells perhaps through downregulation of PRL-3 mRNA expression and suppression of PRL-3 catalytic activity.
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Speciation in aqueous vanadate–ligand and peroxovanadate–ligand systems. J Inorg Biochem 2009; 103:517-26. [DOI: 10.1016/j.jinorgbio.2008.12.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2008] [Revised: 12/08/2008] [Accepted: 12/10/2008] [Indexed: 11/21/2022]
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Zorzano A, Palacín M, Marti L, García-Vicente S. Arylalkylamine vanadium salts as new anti-diabetic compounds. J Inorg Biochem 2009; 103:559-66. [PMID: 19246098 DOI: 10.1016/j.jinorgbio.2009.01.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2008] [Revised: 12/24/2008] [Accepted: 01/16/2009] [Indexed: 01/27/2023]
Abstract
Vanadium compounds show insulin-like effects in vivo and in vitro. Several clinical studies have shown the efficacy of vanadium compounds in type 2 diabetic subjects. However, a major concern is safety, which calls for the development of more potent vanadium compounds. For that reason different laboratories develop strategies to decrease the therapeutic dose of vanadate. One of these strategies use substrates of semicarbazide-sensitive amine oxidase (SSAO)/vascular adhesion protein-1 (VAP-1), a bifunctional protein with amine oxidase activity and adhesive properties implicated in lymphocyte homing at inflammation sites. Substrates of SSAO combined with low concentrations of vanadate strongly stimulate glucose transport and GLUT4 glucose transporter recruitment to the plasma membrane in 3T3-L1 adipocytes and in rat adipocytes. This combination also shows anti-diabetic effects in various animal models of type 1 and type 2 diabetes. Benzylamine/vanadate administration generates peroxovanadium locally in pancreatic islets, which stimulates insulin secretion, and also produces peroxovanadium in adipose tissue, thereby activating glucose metabolism in adipocytes and in neighboring muscle. This opens up the possibility of using the SSAO/VAP-1 activity as a local generator of protein tyrosine phosphatase inhibitors in anti-diabetic therapy. More recently a novel class of arylalkylaminevanadium salts have shown potent insulin-mimetic effects downstream of the insulin receptor. Administration of these compounds lowers glycemia and normalizes the plasma lipid profile in type 1 and type 2 models of diabetes. The combination of different approaches to decrease vanadium doses, among them chelating agents and SSAO substrates, should permit to develop safe and efficient vanadium based agents safe for diabetes treatment.
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Affiliation(s)
- Antonio Zorzano
- Institute for Research in Biomedicine (IRB Barcelona), C/Baldiri Reixac 10, Barcelona, Spain.
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Meyer JA, Spence DM. A perspective on the role of metals in diabetes: past findings and possible future directions. Metallomics 2009. [DOI: 10.1039/b817203j] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Feng Y, Bhatt AJ, Fratkin JD, Rhodes PG. Neuroprotective effects of sodium orthovanadate after hypoxic-ischemic brain injury in neonatal rats. Brain Res Bull 2008; 76:102-8. [PMID: 18395618 DOI: 10.1016/j.brainresbull.2008.01.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2007] [Revised: 01/07/2008] [Accepted: 01/10/2008] [Indexed: 01/03/2023]
Abstract
Sodium orthovanadate (SOV), a competitive inhibitor of protein tyrosine phosphatases, is neuroprotective in adult animals following an ischemic event. The present study evaluated whether SOV might be protective in a rat pup hypoxic-ischemic (HI) model. Seven-day-old rat pups had the right carotid artery permanently ligated followed by 140 min of hypoxia (8% oxygen). SOV 1.15, 2.3, 4.6, 9.2 or 18.4 mg/kg and vehicle were administered by i.p. injection at 5 min after reoxygenation. Brain damage was evaluated by weight loss of the right hemisphere at 22 days after hypoxia and by gross and microscopic morphology. SOV lowered blood glucose at doses of 1.15, 2.3 and 4.6 mg/kg and induced toxic effects at 9.2mg/kg. The doses of 2.3 and 4.6 mg/kg of SOV significantly reduced brain weight loss (p<0.05), but treatment with 1.15 or 9.2mg/kg did not. SOV 4.6 mg/kg also improved the histopathologic score and diminished the HI induced reduction of Akt and ERK-1/2 phosphorylation in the cortex (p<0.05) and increased the density of BrdU-positive cells in the subventricular zone (p<0.01). In conclusion, SOV has neuroprotective effects in the neonatal rat HI model partially mediated by activating Akt and ERK-1/2 pathways.
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Affiliation(s)
- Yangzheng Feng
- Department of Pediatrics, University of Mississippi Medical Center, Jackson, MS 39216, USA.
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Yasui H, Adachi Y, Katoh A, Sakurai H. Metallokinetic characteristics of antidiabetic bis(allixinato)oxovanadium(IV)-related complexes in the blood of rat. J Biol Inorg Chem 2007; 12:843-53. [PMID: 17503093 DOI: 10.1007/s00775-007-0239-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2007] [Accepted: 04/03/2007] [Indexed: 12/01/2022]
Abstract
The antidiabetic effect of vanadium is a widely accepted phenomenon; some oxovanadium(IV) complexes have been found to normalize high blood glucose levels in both type 1 and type 2 diabetic animals. In light of the future clinical use of these complexes, the relationship among their chemical structures, physicochemical properties, metallokinetics, and antidiabetic activities must be closely investigated. Recently, we found that among bis(3-hydroxypyronato)oxovanadium(IV) [VO(3hp)(2)] related complexes, bis(allixinato)oxovanadium(IV) [VO(alx)(2)] exhibits a relatively strong hypoglycemic effect in diabetic animals. Next, we examined its metallokinetics in the blood of rats that received five VO(3hp)(2)-related complexes by the blood circulation monitoring-electron paramagnetic resonance method. The metallokinetic parameters were obtained from the blood clearance curves based on a two-compartment model; most parameters, such as area under the concentration curve and mean residence time, correlated significantly with the in vitro insulinomimetic activity in terms of 1/IC(50) (IC(50) is the 50% inhibitory concentration of the complex required for the release of free fatty acids in adipocytes) and the lipophilicity of the complex (log P (com)). The oxovanadium(IV) concentration was significantly higher and the species resided longer in the blood of rats that received VO(alx)(2) than in the blood of rats that received VO(3hp)(2) or bis(kojato)oxovanadium(IV); VO(alx)(2) also exhibited higher log P (com) and 1/IC(50) values. On the basis of these results, we propose that the introduction of lipophilic groups at the C2 and C6 positions of the 3hp ligand is an effective method to enhance the hypoglycemic effect of the complexes, as supported by the observed in vivo exposure and residence in the blood.
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Affiliation(s)
- Hiroyuki Yasui
- Department of Analytical and Bioinorganic Chemistry, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan.
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Cazarolli LH, Zanatta L, Jorge AP, de Sousa E, Horst H, Woehl VM, Pizzolatti MG, Szpoganicz B, Silva FRMB. Follow-up studies on glycosylated flavonoids and their complexes with vanadium: Their anti-hyperglycemic potential role in diabetes. Chem Biol Interact 2006; 163:177-91. [PMID: 16963010 DOI: 10.1016/j.cbi.2006.07.010] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2006] [Revised: 07/18/2006] [Accepted: 07/31/2006] [Indexed: 10/24/2022]
Abstract
The present study sought to evaluate the hypoglycemic activities of free glycosylated flavonoids and flavonoid complexes with vanadium(IV), (VO(IV)), on glycemia in experimental diabetic rats. Besides free kaempferol-3,7-O-(alpha)-dirhamnoside and kaempferol-3-neohesperidoside, complexes of these flavonoids with VO(IV) were administered by different routes in order to compare the potency of the compounds as well as the efficacy of insulin or VO(IV) in lowering serum glucose. Wistar rats were made diabetic by alloxan. The glycemia was assessed at different times after the administering of compounds. The equilibrium constants were determined by potentiometric study and two species with VO(IV) are proposed at physiological pH, VOH(2)L(2) for kaempferitrin and VOHL for kaempferol-3-neohesperidoside. The latter exhibited hypoglycemic activity at all times examined with 50 and 100 mg/kg and the former reduced the glycemia from 0 to 6h by i.p. route. The administering of the complexes or 0.0146 mmol/kg VO(IV) resulted in a serum glucose-lowering effect over time in the case of i.p. treatment. A marked hypoglycemic effect was observed for 0.5IU of insulin (67.5%); 0.0146 mmol VO(IV) (16.8%); 0.0294 mmol kaempferitrin-VO(IV) (17.8%) and 0.0286 mmol kaempferol-3-neohesperidoside-VO(IV) (56.0%) at 3h after i.p. treatment when compared with respective zero time in diabetic groups. Kaempferol-3-neohesperidoside-VO(IV) was 2.5 times more effective than VO(IV), twice as effective as the free compound and three times more effective than kaempferitrin-VO(IV). This is of particular interest since kaempferol-3-neohesperidoside appears to represent a suitable ligand for VO(IV) to mimic the efficacy of insulin in lowering serum glucose levels.
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Affiliation(s)
- Luisa Helena Cazarolli
- Departamento de Bioquímica, Centro de Ciências Biológicas, UFSC, Campus Universitário, Bairro Trindade, Cx Postal 5069, CEP 88040-970 Florianópolis, SC, Brazil
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Affiliation(s)
- András Gorzsás
- Department of Chemistry, Inorganic Chemistry, Umeå University, 90187 Umeå, Sweden, Fax: +46‐90‐786‐9195
- Present address: Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, 90183 Umeå, Sweden
| | - Ingegärd Andersson
- Department of Chemistry, Inorganic Chemistry, Umeå University, 90187 Umeå, Sweden, Fax: +46‐90‐786‐9195
| | - Lage Pettersson
- Department of Chemistry, Inorganic Chemistry, Umeå University, 90187 Umeå, Sweden, Fax: +46‐90‐786‐9195
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Matsumoto J, Morioka M, Hasegawa Y, Kawano T, Yoshinaga Y, Maeda T, Yano S, Kai Y, Fukunaga K, Kuratsu JI. Sodium orthovanadate enhances proliferation of progenitor cells in the adult rat subventricular zone after focal cerebral ischemia. J Pharmacol Exp Ther 2006; 318:982-91. [PMID: 16782823 DOI: 10.1124/jpet.106.104562] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Neuronal progenitor cells able to produce new neuron and glia persist in the adult central nervous system (CNS). Their proliferation is up-regulated by growth factors or cytokines under some pathological conditions, including ischemia. Because sodium orthovanadate (SOV), a protein tyrosine phosphatase inhibitor, can up-regulate tyrosine kinase-linked growth factor receptor signaling via the inhibition of tyrosine residue dephosphorylation, it may be capable of enhancing progenitor cells. To investigate the effect of SOV on progenitor cells in the subventricular zone (SVZ), we injected rats intraperitoneally with 50 mg/kg bromodeoxyuridine (BrdU) and 12.5 or 25 mM SOV or BrdU and saline (control) on days 1 to 7 after middle cerebral artery occlusion. The density of BrdU-positive cells in the ipsilateral SVZ showed a significant SOV dose-dependent increase. This effect was found only in the ipsilateral and not contralateral SVZ, and it was not found in nonischemic rats. Double immunolabeling with BrdU and double cortin, a marker of migrating neuroblast, revealed that the density of double-positive cells increased significantly in an SOV dose-dependent manner. Terminal deoxynucleotidyl transferase dUTP nick-end labeling staining suggested that the SOV-induced increase was not due to antiapoptotic effects. Treatment with SOV also significantly increased the density of cells positive for BrdU and phosphorylated Akt and BrdU and phosphorylated extracellular signal-regulated kinase (ERK). We postulate that ischemia triggers off the proliferation of SVZ cells by bioactive factors such as growth factors and that SOV enhances the proliferation of only triggered-off SVZ cells with Akt and ERK activation. Our findings suggest that SOV may aid in the self-repair of the postischemic CNS.
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Affiliation(s)
- Jun Matsumoto
- Department of Neurosurgery, Kumamoto University School of Medicine, 1-1-1 Honjo, Kumamoto 860-8556, Japan
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Kawabe K, Yoshikawa Y, Adachi Y, Sakurai H. Possible mode of action for insulinomimetic activity of vanadyl(IV) compounds in adipocytes. Life Sci 2006; 78:2860-6. [PMID: 16337244 DOI: 10.1016/j.lfs.2005.11.008] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2005] [Accepted: 11/07/2005] [Indexed: 11/22/2022]
Abstract
Vanadyl(IV) ions (+4 oxidation state of vanadium) and their complexes have been shown to have in vitro insulinomimetic activity and to be effective in treating animals with diabetes mellitus. Although, researchers have proposed many vanadyl compounds for the treatment of diabetes patients, the mode of action of vanadyl compounds remains controversial. In order to evaluate the mode of action of these compounds, we examined the insulinomimetic activity of VOSO4, bis(picolinato)oxovanadyl(IV), and bis(maltolato)oxovanadyl(IV) in the presence of several inhibitors relevant to the glucose metabolism. After confirming that these vanadyl compounds were incorporated in the adipocytes as estimated by ESR method, we evaluated the mode of action by examining free fatty acids (FFA) release in the adipocytes. Inhibition of FFA release by these vanadyl compounds was found to be reversed by the addition of inhibitors, typically by cytochalasin B (glucose transporter 4 (GLUT4) inhibitor), cilostamide (phosphodiesterase inhibitor), HNMPA-(AM)3 (tyrosine kinase inhibitor), and wortmannin (PI3-k inhibitor), indicating that these compounds affect primarily GLUT4 and phosphodiesterase, as named "ensemble mechanism". Based on these results, we suggest that vanadyl compounds act on at least four sites relevant to the glucose metabolism, and on GLUT4 and phosphodiesterase in particular in rat adipocytes, which in turn normalizes the blood glucose levels of diabetic animals. The obtained results provide evidence for the role of vanadyl ion and its complexes in stimulation of the uptake and degeneration of glucose.
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Affiliation(s)
- Kenji Kawabe
- Department of Analytical and Bioinorganic Chemistry, Kyoto Pharmaceutical University, Yamashina-ku, Kyoto 607-8414, Japan
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Hasegawa Y, Morioka M, Hasegawa S, Matsumoto J, Kawano T, Kai Y, Yano S, Fukunaga K, Kuratsu JI. Therapeutic Time Window and Dose Dependence of Neuroprotective Effects of Sodium Orthovanadate following Transient Middle Cerebral Artery Occlusion in Rats. J Pharmacol Exp Ther 2006; 317:875-81. [PMID: 16461588 DOI: 10.1124/jpet.105.096677] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Vanadium is widely distributed in the environment and exhibits various biological and physiological effects in the human body. We previously documented the neuroprotective effect of sodium orthovanadate (SOV) against in rodents i.v. injected with 2 ml/kg 50 mM SOV just after the induction of middle cerebral artery occlusion (MCAO; 0 min post-MCAO). To evaluate its potential clinical use, we determined here therapeutic time window (0, 45, and 90 min post-MCAO) and the neuroprotective dose (2 ml/kg, 12.5, 25, 37.5, and 50 mM) of SOV in rats. A single injection of 50 mM SOV at 0 or 45 min post-MCAO produced similar neuroprotective effects, and even 50 mM delivered 90 min post-MCAO exerted significant neuroprotection. Although the maximal neuroprotective effect was obtained at 50 mM SOV, 25 mM injected once and 12.5 mM delivered at 0 and 45 min post-MCAO significantly reduced the infarct volume. We also documented that SOV treatment ameliorates ischemic neuronal cell injury via the activation of both protein kinase B (Akt) and extracellular signal-regulated kinase (ERK), inhibits serum glucose, and elicits the gradual recovery of regional cerebral blood flow (rCBF) after transient MCAO in rats. To elucidate the important factor(s) involved in the neuronal protection afforded by SOV, we measured Akt and ERK activity, physiological parameters, blood glucose levels, and rCBF following various SOV treatments. In conclusion, Akt activation was the most important factor in SOV-induced neuroprotection; ERK activation, the gradual recovery of rCBF, and decreased blood glucose were weak contributors.
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Affiliation(s)
- Yu Hasegawa
- Department of Neurosurgery, Kumamoto University School of Medicine, 1-1-1 Honjo, Kumamoto 860-8556, Japan
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MacDonald K, Bailey J, MacRory C, Friis C, Vogels CM, Broderick T, Westcott SA. A Newly Synthesised Molybdenum/Ascorbic Acid Complex Alleviates Some Effects of Cardiomyopathy in Streptozocin-Induced Diabetic Rats. Drugs R D 2006; 7:33-42. [PMID: 16620135 DOI: 10.2165/00126839-200607010-00003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
BACKGROUND Exogenous insulin does not prevent cardiac failure in patients with type 1 diabetes mellitus and a cardioprotective insulin mimic is greatly needed. Certain transition metals are known to act as insulin mimics and may be cardio- protective. In this study, the ability of a newly synthesised molybdenum/ascorbic acid complex to strengthen cardiac function was investigated. METHODS AND DESIGN Male CD rats were assigned to one of five groups: non-diabetic control, non-diabetic control treated with molybdenum/ascorbic acid complex, diabetic treated with sodium ascorbate, diabetic treated with molybdenum/ascorbic acid complex and untreated diabetics. Type 1 diabetes was induced by streptozocin injection. Once diabetes was confirmed, treatment was initiated by adding either the molybdenum/ascorbic acid complex or sodium ascorbate to the drinking water and continued for 6 weeks. Following the treatment period, the animals were terminated, and their hearts were excised and mounted in a working heart perfusion apparatus. Blood samples were taken for plasma glucose and plasma lipid level determination. Cardiac function was evaluated using 1 hour of low-flow ischaemic stress followed by 30 minutes of reperfusion. RESULTS Hearts from the animals treated with the molybdenum/ascorbic acid complex displayed the best aerobic performance of all the diabetic animals. Blood glucose levels and blood lipid levels were significantly lower in animals treated with the complex than in other diabetic animals. The group treated with the complex also had a lower drinking rate than the other diabetic groups. Furthermore, hearts from animals treated with the molybdenum/ascorbic acid complex showed a greater degree of recovery from low-flow ischaemia than any other group. CONCLUSIONS The molybdenum/ascorbic acid complex showed some significant insulin-mimic and cardioprotective effects. Further development of this complex could provide a drug useful for alleviating some of the cardiovascular problems associated with diabetes mellitus.
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Affiliation(s)
- K MacDonald
- Department of Biology, Mount Allison University, Sackville, New Brunswick, Canada
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Delgado TC, Tomaz AI, Correia I, Costa Pessoa J, Jones JG, Geraldes CFGC, Castro MMCA. Uptake and metabolic effects of insulin mimetic oxovanadium compounds in human erythrocytes. J Inorg Biochem 2005; 99:2328-39. [PMID: 16226808 DOI: 10.1016/j.jinorgbio.2005.08.014] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2005] [Revised: 08/01/2005] [Accepted: 08/26/2005] [Indexed: 11/26/2022]
Abstract
The uptake of the oxidation products of two oxovanadium(IV) compounds, [N,N'-ethylenebis(pyridoxylaminato)]oxovanadium(IV), V(IV)O(Rpyr(2)en), and bis-[3-hydroxy-1,2-dimethyl-4-pyridinonato]oxovanadium(IV), V(IV)O(dmpp)(2), by human erythrocytes was studied using (51)V and (1)H NMR and EPR spectroscopy. V(IV)O(Rpyr(2)en) in aerobic aqueous solution is oxidized to its V(V) counterpart and the neutral form slowly enters the cells by passive diffusion. In aerobic conditions, V(IV)O(dmpp)(2) originates V(V) complexes of 1:1 and 1:2 stoichiometry. The neutral 1:1 species is taken up by erythrocytes through passive diffusion in a temperature-dependent process; its depletion from the extracellular medium promotes the dissociation of the negatively charged 1:2 species, and the protonation of the negatively charged 1:1 species. The identity of these complexes is not maintained inside the cells, and the intracellular EPR spectra suggest N(2)O(2) or NO(3) intracellular coordinating environments. The oxidative stress induced by the oxovanadium compounds in erythrocytes was not significant at 1mM concentration, but was increased by both vanadate and oxidized V(IV)O(dmpp)(2) at 5mM. Only 1mM oxidized V(IV)O(dmpp)(2) significantly stimulated erythrocytes glucose intake (0.75+/-0.13 against 0.37+/-0.17mM/h found for the control, p<0.05).
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Affiliation(s)
- Teresa C Delgado
- Department of Biochemistry, Center of NMR Spectroscopy and Center for Neurosciences and Cell Biology, University of Coimbra, P.O. Box 3126, 3001-401 Coimbra, Portugal
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Eddouks M, Maghrani M, Zeggwagh NA, Michel JB. Study of the hypoglycaemic activity of Lepidium sativum L. aqueous extract in normal and diabetic rats. JOURNAL OF ETHNOPHARMACOLOGY 2005; 97:391-395. [PMID: 15707780 DOI: 10.1016/j.jep.2004.11.030] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2004] [Revised: 11/28/2004] [Accepted: 11/28/2004] [Indexed: 05/24/2023]
Abstract
The hypoglycaemic effect of an aqueous extract of Lepidium sativum L. (LS) seeds was investigated in normal and streptozotocin (STZ)-induced diabetic rats. After a acute (single dose) or chronic (15 daily repeated administration) oral treatments, the aqueous LS extract (20 mg/kg) produced a significant decrease on blood glucose levels in STZ diabetic rats (p < 0.001); the blood glucose levels were normalised 2 weeks after daily repeated oral administration of aqueous LS extract (20 mg/kg) (p < 0.001). Significant reduction on blood glucose levels were noticed in normal rats after both acute (p < 0.01) and chronic treatment (p < 0.001). In addition, no changes were observed in basal plasma insulin concentrations after treatment either in normal or STZ diabetic rats indicating that the underlying mechanism of this pharmacological activity seems to be independent of insulin secretion. We conclude that the aqueous extract of LS exhibits a potent hypoglycaemic activity in rats without affecting basal plasma insulin concentrations.
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Affiliation(s)
- M Eddouks
- UFR PNPE P.B. 21, Errachidia 52000, Morocco.
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Mackay AJ, Petrie JR. Insulin and lipid metabolism: new developments in drug therapy. Expert Opin Investig Drugs 2005; 6:665-75. [PMID: 15989634 DOI: 10.1517/13543784.6.6.665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Current treatments for non-insulin-dependent diabetes mellitus (NIDDM) remain far from ideal. The presence of both hyperinsulinaemia and resistance to insulin action in NIDDM challenges the rationale of treatments which primarily boost insulin secretion. Novel therapeutic strategies focus mainly on increasing peripheral sensitivity to endogenous insulin, an approach which has the potential not only to treat, but also to prevent NIDDM in high-risk individuals. The most promising new agents are the thiazolidinedione derivatives, in particular troglitazone. Thiazolidinediones are ligands for a specific subtype of the peroxisome proliferator activated receptor (PPAR), and decrease plasma glucose levels in both obesity and NIDDM, while at the same time reducing circulating insulin and free fatty acid levels. The current development status of these agents is reviewed, along with an assessment of their potential in the prevention and treatment of diverse pathophysiological states characterised by insulin resistance, including atherosclerosis and polycystic ovarian disease. Reference is made to the current status of other experimental agents including hydantoin derivatives, (3)-adrenoceptor agonists, and inhibitors of lipolysis.
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Affiliation(s)
- A J Mackay
- Department of Medicine and Therapeutics, Western Infirmary, Glasgow, G11 6NT, UK
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Harati M, Ani M. Vanadyl sulfate ameliorates insulin resistance and restores plasma dehydroepiandrosterone-sulfate levels in fructose-fed, insulin-resistant rats. Clin Biochem 2004; 37:694-7. [PMID: 15302613 DOI: 10.1016/j.clinbiochem.2004.01.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2003] [Revised: 01/08/2004] [Accepted: 01/16/2004] [Indexed: 12/24/2022]
Abstract
OBJECTIVES To elucidate whether vanadyl sulfate ameliorates the decreased dehydroepiandrosterone sulfate (DHEAS) in hyperinsulinemic rats, we evaluated plasma DHEAS, insulin and triglyceride (TG) levels in fructose-induced, insulin-resistant rats. DESIGN AND METHODS Animals were divided into three groups: control (C), fructose fed (F-F), and vanadyl-treated fructose fed (F-T). Control animals were fed with standard chow; F-F and F-T groups fed with 66% fructose diet. F-F and C groups received tap water; F-T group received water supplemented with 0.2 mg/ml vanadyl sulfate. RESULTS Fasting plasma glucose levels of three groups were comparable. Vanadyl treatment prevented the increase in plasma insulin and TG in the F-T group (P < 0.001) compared with the F-F group. Fructose feeding led to a decrease in plasma DHEAS in the F-F group (P < 0.001) compared with the C group. Vanadyl treatment prevented the decrease in plasma DHEAS in the F-T group (P < 0.001) compared with the F-F group. CONCLUSIONS Our results indicated that the hyperinsulinemia in fructose-fed, insulin-resistant rats is associated with low levels of DHEAS. Vanadyl sulfate probably restores plasma DHEAS, due to the improved insulin action.
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Affiliation(s)
- Mehdi Harati
- Department of Biochemistry, Faculty of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran.
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