1
|
El‐Deen RM, Heeba GH, Abdel‐latif RG, Khalifa MM. Comparative effectiveness of phosphodiesterase 3, 4, and 5 inhibitors in amelioration of high‐fat diet‐induced nonalcoholic fatty liver in rats. Fundam Clin Pharmacol 2020; 34:353-364. [DOI: 10.1111/fcp.12530] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 12/11/2019] [Accepted: 12/19/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Reham M. El‐Deen
- Undersecretary Preventive Sector General Administration Viral Hepatitis Ministry of Health and Population Cairo11516 Egypt
| | - Gehan H. Heeba
- Department of Pharmacology & Toxicology Faculty of Pharmacy Minia University El‐Minia61511 Egypt
| | - Rania G. Abdel‐latif
- Department of Pharmacology & Toxicology Faculty of Pharmacy Minia University El‐Minia61511 Egypt
| | - Mohamed M.A. Khalifa
- Department of Pharmacology & Toxicology Faculty of Pharmacy Minia University El‐Minia61511 Egypt
| |
Collapse
|
2
|
Antinozzi C, Sgrò P, Di Luigi L. Advantages of Phosphodiesterase Type 5 Inhibitors in the Management of Glucose Metabolism Disorders: A Clinical and Translational Issue. Int J Endocrinol 2020; 2020:7078108. [PMID: 32774364 PMCID: PMC7407035 DOI: 10.1155/2020/7078108] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/06/2020] [Accepted: 07/14/2020] [Indexed: 12/17/2022] Open
Abstract
Among metabolic diseases, carbohydrate metabolism disorders are the most widespread. The most common glucose pathological conditions are acquired and may increase the risk of type 2 diabetes, obesity, heart diseases, stroke, and kidney insufficiency. Phosphodiesterase type 5 inhibitors (PDE5i) have long been used as an effective therapeutic option for the treatment of erectile dysfunction (ED). Different studies have demonstrated that PDE5i, by sensitizing insulin target tissues to insulin, play an important role in controlling the action of insulin and glucose metabolism, highlighting the protective action of these drugs against metabolic diseases. In this review, we report the latest knowledge about the role of PDE5i in the metabolic diseases of insulin resistance and type 2 diabetes, highlighting clinical aspects and potential treatment approaches. Although various encouraging data are available, further in vivo and in vitro studies are required to elucidate the mechanism of action and their clinical application in humans.
Collapse
Affiliation(s)
- Cristina Antinozzi
- Unit of Endocrinology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy
| | - Paolo Sgrò
- Unit of Endocrinology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy
| | - Luigi Di Luigi
- Unit of Endocrinology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy
| |
Collapse
|
3
|
Mehanna OM, El Askary A, Al-Shehri S, El-Esawy B. Effect of phosphodiesterase inhibitors on renal functions and oxidant/antioxidant parameters in streptozocin-induced diabetic rats. Arch Physiol Biochem 2018; 124:424-429. [PMID: 29271249 DOI: 10.1080/13813455.2017.1419267] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The goal of this study was to investigate the effect of different phosphodiesterase inhibitors (PDEIs), on renal oxidant/antioxidant balance in diabetic rats. Our study was conducted on 125 rats, diabetes was induced in 100 rats by a single administration of streptozocin (STZ). Diabetic rats were divided into four equal groups. The first group was assigned as diabetic control, the remaining three groups were treated with pentoxifylline, sildenafil and milrinone via drinking water for 15 successive days, another group of 25 normal rats was assigned as non-diabetic control. Significant increase in plasma levels of glucose, urea, creatinine, malondialdehyde (MDA), and nitric oxide (NO) with a concomitant decrease in the levels of insulin, reduced glutathione (GSH), glutathione peroxidase (Gpx), superoxide dismutase (SOD), catalase (CAT), and total antioxidant capacity (TAC) were observed in diabetic rats. These alterations were reverted back to near normal level after treatment with PDEIs. Our data seem to suggest a potential role of PDEIs in maintaining health in diabetes by reducing the progression of diabetic nephropathy.
Collapse
Affiliation(s)
- Osama Mahmoud Mehanna
- a Department of Medical Physiology, Faculty of Medicine , Taif University , Taif , KSA
- b Department of Medical Physiology, Faculty of Medicine (New Damietta) , Al-Azhar University , Cairo , Egypt
| | - Ahmad El Askary
- c Department of Clinical Laboratory Sciences, College of Applied Medical Sciences , Taif University , Taif , KSA
- d Department of Medical Biochemistry, Faculty of Medicine (New Damietta) , Al-Azhar University , Cairo , Egypt
| | - Saad Al-Shehri
- c Department of Clinical Laboratory Sciences, College of Applied Medical Sciences , Taif University , Taif , KSA
| | - Basem El-Esawy
- c Department of Clinical Laboratory Sciences, College of Applied Medical Sciences , Taif University , Taif , KSA
- e Department of Pathology, Faculty of medicine , Mansoura University , Mansoura , Egypt
| |
Collapse
|
4
|
Niaz K, Mabqool F, Khan F, Ismail Hassan F, Baeeri M, Navaei-Nigjeh M, Hassani S, Gholami M, Abdollahi M. Molecular mechanisms of action of styrene toxicity in blood plasma and liver. ENVIRONMENTAL TOXICOLOGY 2017; 32:2256-2266. [PMID: 28678435 DOI: 10.1002/tox.22441] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 06/08/2017] [Accepted: 06/10/2017] [Indexed: 06/07/2023]
Abstract
Styrene is an aromatic colorless hydrocarbon available in liquid form and highly volatile. In its pure form, it gives a sweet smell. The primary source of exposure in the environment is from plastic materials, rubber industries, packaging materials, insulations, and fiber glass and carpet industry. Natural sources of styrene include: few metabolites in plants which are transferred through food chain. The current study was designed to evaluate styrene toxicity, including: superoxide dismutase (SOD) and protein carbonyl, oxidative stress, glucose-6-phosphatase (G6Pase), glycogen phosphorylase (GP), and phosphoenolpyruvate carboxykinase (PEPCK) activities, adenosine triphosphate (ATP) to adenosine diphosphate (ADP) ratio, and changes in gene expressions such as glutamate dehydrogenase 1 (GLUD1), glucose transporter 2 (GLUT2), and glucokinase (GCK) in the rat liver tissue. For this purpose, styrene was dissolved in corn oil and was administered via gavage, at doses 250, 500, 1000, 1500, 2000, mg/kg/day per mL and control (corn oil) to each rat with one day off in a week, for 42 days. Plasma SOD and protein carbonyl of plasma were significantly up-regulated in 1000, 1500, and 2000 mg/kg/day styrene administrated groups (P < .001). In addition, styrene caused an increase in lipid peroxidation (LPO) and reactive oxygen species (ROS) in the dose-dependent manners in liver tissue (P < .001). Furthermore, the ferrous reducing antioxidant power (FRAP) and total thiol molecules (TTM) in styrene-treated groups were significantly decreased in liver tissue (P < .001) with increasing doses. In treated rats, styrene significantly increased G6Pase activity (P < .001) and down-regulated GP activity (P < .001) as compared to the control group. The PEPCK activity was significantly raised in a dose-dependent manner (P < .001). The ATP/ADP ratio of live cells was significantly raised by increasing the dose (P < .001). There was significantly an up-regulation of GLUD1 and GCK at 2000 mg/kg group (P < .01) and a down-regulation for GLUT2 at the same dose. While in the rest of group, GLUT2 showed up-regulation of relative fold change. By targeting genes such as GLUD1, GLUT2, and GCK, disruption of hepatic gluconeogenesis, glycogenolysis, and insulin secretory functions are obvious. The present study illustrates that induction of oxidative stress followed by changes in G6Pase, GP, and PEPCK activities and the genes responsible for glucose metabolism are the mechanisms of styrene's action in the liver.
Collapse
Affiliation(s)
- Kamal Niaz
- International Campus-Tehran University of Medical Sciences (IC-TUMS), Tehran, Iran
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Faheem Mabqool
- International Campus-Tehran University of Medical Sciences (IC-TUMS), Tehran, Iran
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Fazlullah Khan
- International Campus-Tehran University of Medical Sciences (IC-TUMS), Tehran, Iran
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatima Ismail Hassan
- International Campus-Tehran University of Medical Sciences (IC-TUMS), Tehran, Iran
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Baeeri
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mona Navaei-Nigjeh
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Shokoufeh Hassani
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahdi Gholami
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Abdollahi
- International Campus-Tehran University of Medical Sciences (IC-TUMS), Tehran, Iran
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
5
|
Effect of phosphodiesterase-5 inhibitors on glycemic control in person with type 2 diabetes mellitus: A systematic review and meta-analysis. JOURNAL OF CLINICAL AND TRANSLATIONAL ENDOCRINOLOGY 2016; 6:50-55. [PMID: 29067241 PMCID: PMC5644434 DOI: 10.1016/j.jcte.2016.11.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 11/16/2016] [Accepted: 11/16/2016] [Indexed: 12/30/2022]
Abstract
Chronic use of phosphodiesterase-5 inhibitors (PDE-5i) has been shown to improve insulin action on muscle glucose uptake by the prolongation of nitric oxide (NO)/cyclic guanosine monophosphate (cGMP)/protein kinase (PKG) signalling. Aims As the effects of PDE-5i on glycemic control in person with type 2 diabetes mellitus (T2DM) have not been systematically explored, we conducted a meta-analysis of available randomized controlled trials (RCTs). Methods A literature search was performed through electronic databases including MEDLINE (Pubmed), The Cochrane Library, SCOPUS, Web of Science, CINAHL, www.clinicaltrials.gov and www.clinicaltrialresults.org until April 2016 without language restriction. Studies were included if they met the following criteria: (i) RCTs of the chronic use of PDE-5i compared with placebo or no active treatment in T2DM patients (ii) reporting of HbA1c or glycated haemoglobin or fasting plasma glucose (FPG). Results Four studies involving a total of 198 patients fit into the inclusion criteria. All included studies used the same PDE-5i, sildenafil. Reports of HbA1c were analysed as only one study reported FPG. PDE-5i had no beneficial effect on HbA1c with weighted mean difference (WMD) of 0.17% (95% CI, −0.64 to 0.97). Conclusion This meta-analysis suggests that large and well-controlled studies are warranted to shed light on the effect of PDE-5i on glycemic control in people with type 2 diabetes mellitus.
Collapse
|
6
|
El Sayed MES, Eid N, El Din Kamel AS. Beneficial effects of certain phosphodiesterase inhibitors on diabetes mellitus in rats. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.bfopcu.2014.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
7
|
Vilela VR, de Oliveira AL, Comar JF, Peralta RM, Bracht A. Tadalafil inhibits the cAMP stimulated glucose output in the rat liver. Chem Biol Interact 2014; 220:1-11. [PMID: 24911673 DOI: 10.1016/j.cbi.2014.05.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 05/20/2014] [Accepted: 05/28/2014] [Indexed: 12/20/2022]
Abstract
The purpose of the present work was to verify if tadalafil affects hepatic glucose output, one of the primary targets of cAMP, in the isolated perfused rat liver. No effects on glycogen catabolism and oxygen uptake were found under basal conditions for tadalafil concentrations in the range between 0.25 and 10 μM. However, tadalafil had a clear and time-dependent inhibitory effect on the cAMP- and glucagon-stimulated glucose release. Constant infusion of tadalafil in the range between 0.25 and 10 μM eventually abolished 100% of the stimulatory action of those effectors. The tadalafil concentrations producing half-maximal rates of inhibition of the cAMP and glucagon stimulated glycogenolysis were 0.46±0.04 and 1.07±0.16 μM, respectively. These concentrations are close to the plasma peak concentrations in patients after ingestion of 20 mg tadalafil. The drug also diminished the activity of glycogen phosphorylase a and increased the activities of glucose 6-phosphatase, glucokinase, pyruvate kinase and glucose 6-phosphate dehydrogenase. These actions occurred only in the cellular environment. Tadalafil did not affect binding of cAMP to protein kinase A. Diminution of cAMP-stimulated glucose output is the opposite of what can be expected from a phosphodiesterase inhibition, the most common effect attributed to tadalafil. Diminution of glucose output by tadalafil can be attributed (a) to an interference with glycogen phosphorylase stimulation and (b) to an increased futile cycling of glucose 6-phosphate and glucose with a concomitant increased flow of hexose units into cellular metabolic pathways. The effects described in the present work may prove to represent important side effects of tadalafil.
Collapse
Affiliation(s)
| | | | | | | | - Adelar Bracht
- Department of Biochemistry, University of Maringá, 87020900 Maringá, Brazil.
| |
Collapse
|
8
|
Pakzad M, Fouladdel S, Nili-Ahmadabadi A, Pourkhalili N, Baeeri M, Azizi E, Sabzevari O, Ostad SN, Abdollahi M. Sublethal exposures of diazinon alters glucose homostasis in Wistar rats: Biochemical and molecular evidences of oxidative stress in adipose tissues. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2013; 105:57-61. [PMID: 24238291 DOI: 10.1016/j.pestbp.2012.11.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 11/10/2012] [Accepted: 11/19/2012] [Indexed: 06/02/2023]
Abstract
Disorder of glucose homeostasis is one of the most important complications following exposure to organophosphorous (OPs) pesticides. Regarding the importance of adipose tissue in regulating blood glucose and the role of oxidative stress in toxicity of OPs and in the continue of our previous works, in the present study we focused on tumor necrosis factor alpha (TNFα), glucose transporter type 4 (GLUT4), and nuclear factor kappa-light-chain-enhancer of activated B cells (Nf-κB) in a sublethal model of toxicity by diazinon as a common OPs. Following time-course study of various doses of diazinon in impairing blood glucose, dose of 70mg/kg/day was found the optimum. Animals were treated for 4 weeks and after gavage of glucose (2g/kg), the glucose change was evaluated at time-points of 0, 30, 60, 120 and 180min to identify oral glucose tolerance test (GTT). In addition, serum insulin was measured in fasting condition. In adipose tissue, oxidative stress markers including reactive oxygen species (ROS), nicotinamide adenine dinucleotide phosphate (NADPH) oxidase and TNFα were evaluated. The mRNA expression of GLUT4, Nf-κB and glyceraldehyde 3-phosphate dehydrogenase (GAPDH) were also determined by real time reverse transcription polymerase chain reaction (RT-PCR). Diazinon at dose of 70mg/kg/day impaired GTT and diminished insulin level while augmented ROS, NADPH oxidase, and TNFα. The GLUT4 mRNA expression was amplified by diazinon while unlikely, the expression of Nf-κB gene did not change. On the basis of biochemical and molecular findings, it is concluded that diazinon impairs glucose homeostasis through oxidative stress and related proinflammatory markers in a way to result in a reduced function of insulin inside adipose tissue. Although, diazinon interfered with pancreatic influence on the adipose tissue most probably via stimulation of muscarinic receptors, current data are not sufficient to introduce adipose tissue as a target organ to OPs toxicity. Considering the potential of OPs to accumulate in adipose tissue, it seems a good candidate organ for future studies. Although, hyperglycemia was not induced by diazinon but increased AUC0-180min leads us to the point that diazinon induces kind of instability in glucose homostasis and diabetes.
Collapse
Affiliation(s)
- Mohsen Pakzad
- Department of Toxicology and Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences (TUMS), Iran
| | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Khanavi M, Taheri M, Rajabi A, Fallah-Bon S, Baeeri M, Mohammadir A, Amin G, Abdollahi M. Stimulation of Hepatic Glycogenolysis and Inhibition of Gluconeogenesis are the Mechanisms of Antidiabetic Effect of Centaurea bruguierana ssp. belangerana. ACTA ACUST UNITED AC 2012. [DOI: 10.3923/ajava.2012.1166.1174] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
10
|
Rezvanfar MA, Rahimi HR, Abdollahi M. ADMET considerations for phosphodiesterase-5 inhibitors. Expert Opin Drug Metab Toxicol 2012; 8:1231-45. [PMID: 22769968 DOI: 10.1517/17425255.2012.698610] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
INTRODUCTION ADMET (absorption, distribution, metabolism, excretion, and toxicity) profiling is an important aspect of all drug developments. The pharmaceutical industry must always consider ADMET properties in order to optimize drug candidates and to introduce new formulations against existing marketed drugs. Consequently, candidate drug development may be halted early in the discovery phase or during the more costly drug development process because of their poor ADMET properties. AREAS COVERED The main focus of this article is ADMET profiling, pharmacokinetic (PK) drug interactions, mechanisms and possible adverse drug reactions (ADRs) for approved phosphodiesterase-5 inhibitors (PDE5Is). The authors also look at the efficacy and non-erectogenic benefits of current PDE5Is, which are widely used by patients with erectile dysfunction (ED). The authors also discuss other unapproved PDE5Is such as aildenafil and udenafil, which are currently in use in clinical trials. EXPERT OPINION The authors believe that the enhancing effect of PDE5Is on the nitric oxide (NO)/cyclic guanosine monophosphate (cGMP) pathway means that PDE5Is could be used to treat various conditions. An important issue in their development is 'cross-talk' between PDE5 and other PDEs and thus their specificity for other PDEs. But while it might be difficult to achieve the ideal ADMET profile, it should not necessarily prevent further development of a lead PDE5I. The risk assessment of PDE5Is, with respect to their ADMET properties, is therefore very important for predicting drug-drug interactions, possible side effects, ADRs and its future clinical applications.
Collapse
Affiliation(s)
- Mohammad Amin Rezvanfar
- Tehran University of Medical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Department of Toxicology and Pharmacology, Tehran, Iran
| | | | | |
Collapse
|
11
|
Mohammadir A, Khorram-Kh H, Gharibdoos F, Abdollahi M. Setarud (IMODTM) as a Multiherbal Drug with Promising Benefits in Animal and Human Studies: A Comprehensive Review of Biochemical and Cellular Evidences. ACTA ACUST UNITED AC 2011. [DOI: 10.3923/ajava.2011.1185.1192] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
12
|
Mohammadi M, Atashpour S, Pourkhalil N, Nili-Ahmad A, Baeeri M, Mohammadir A, Hassani S, Nikfar S, Abdollahi M. Comparative Improvement in Function of Isolated Rat Langerhans Islets by Various Phosphodiesterase 3, 4 and 5 Inhibitors. ACTA ACUST UNITED AC 2011. [DOI: 10.3923/ajava.2011.1233.1240] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
13
|
Pourkhalili N, Hosseini A, Nili-Ahmadabadi A, Hassani S, Pakzad M, Baeeri M, Mohammadirad A, Abdollahi M. Biochemical and cellular evidence of the benefit of a combination of cerium oxide nanoparticles and selenium to diabetic rats. World J Diabetes 2011; 2:204-10. [PMID: 22087357 PMCID: PMC3215770 DOI: 10.4239/wjd.v2.i11.204] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 10/26/2011] [Accepted: 10/31/2011] [Indexed: 02/05/2023] Open
Abstract
AIM: To study the combinative effects of nanocerium and selenium in a murine model of diabetes.
METHODS: Cerium oxide (CeO2) nanoparticles (60 mg/kg per day) and sodium selenite (5 μmol/kg per day) alone or in combination, or the metal form of CeO2 (60 mg/kg) were administered for 2 wk by intraperitoneal injection to streptozotocin-induced diabetic rats. At the end of treatment blood was collected, liver tissue dissected and then oxidative stress markers, extent of energy depletion and lipid profile were evaluated.
RESULTS: Antioxidant enzymes and high density lipoprotein decreased whereas oxidative stress, adenosine diphosphate/adenosine triphospahte levels, cholesterol, triglyceride and low density lipoprotein increased on induction of diabetes. All were improved by a combination of nanocerium and sodium selenite. There was a relative amelioration by CeO2 nanoparticles or sodium selenite alone, but the metal form of CeO2 showed no significant improvement.
CONCLUSION: The combination of nanocerium and sodium selenite is more effective than either alone in improving diabetes-induced oxidative stress.
Collapse
Affiliation(s)
- Nazila Pourkhalili
- Nazila Pourkhalili, Amir Nili-Ahmadabadi, Shokoufeh Hassani, Mohsen Pakzad, Maryam Baeeri, Azadeh Mohammadirad, Mohammad Abdollahi, Faculty of Pharmacy, Pharmaceutical Sciences Research Center, Tehran University of Medical sciences, Tehran 1417614411, Iran
| | | | | | | | | | | | | | | |
Collapse
|
14
|
Sarkhail P. Urtica dioica Improves Glucose Control in Diabetes on the Basis of Animal Studies. ACTA ACUST UNITED AC 2011. [DOI: 10.3923/ajava.2011.1034.1036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
15
|
Medana C, Calza P, Giancotti V, Bello FD, Pasello E, Montana M, Baiocchi C. Horse metabolism and the photocatalytic process as a tool to identify metabolic products formed from dopant substances: the case of sildenafil. Drug Test Anal 2011; 3:724-34. [DOI: 10.1002/dta.334] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 06/23/2011] [Accepted: 07/13/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Claudio Medana
- Department of Analytical Chemistry; University of Turin; Torino; Italy
| | - Paola Calza
- Department of Analytical Chemistry and NIS Centre of Excellence; University of Turin; Torino; Italy
| | - Valeria Giancotti
- Department of Analytical Chemistry; University of Turin; Torino; Italy
| | | | - Emanuela Pasello
- Department of Analytical Chemistry; University of Turin; Torino; Italy
| | - Marco Montana
- Department of Analytical Chemistry; University of Turin; Torino; Italy
| | - Claudio Baiocchi
- Department of Analytical Chemistry; University of Turin; Torino; Italy
| |
Collapse
|
16
|
Abstract
AbstractThe present study was designed to explore the mechanism of action of walnut (the seed of Juglans regia) leaf and ridge on hepatic glucose metabolism in diabetic mice. Experimental diabetes was induced by intravenous administration of streptozotocin (60 mg/kg)and confirmed with an increase of blood glucose, 90–100% of the control, 72 hours later. Isolated extracts from walnut leaf and ridges were administered in a single effective dose of 400 mg/kg orally. Firstly, blood glucose was determined every 1 hour until 5 hours post administration of extracts. In the second experiment, the liver was surgically removed, 2 hours post treatment of diabetic animals with extracts, homogenized and used for measurement of key enzymes of glycogenolysis (glycogen phosphorylase, GP) and gluconeogenesis (phosphoenolpyruvate carboxykinase, PEPCK). Treatment by both leaf and ridge extracts decreased blood glucose and liver PEPCK activity and increased blood insulin and liver GP activity. It is concluded that walnut is able to lower blood glucose through inhibition of hepatic gluconeogenesis and secretion of pancreatic insulin.
Collapse
|
17
|
Comparative Effects of Calcium Channel Blockers, Autonomic Nervous System Blockers, and Free Radical Scavengers On Diazinon-Induced Hyposecretion Of Insulin From Isolated Islets of Langerhans in Rats. Arh Hig Rada Toksikol 2009; 60:157-64. [DOI: 10.2478/10004-1254-60-2009-1917] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Comparative Effects of Calcium Channel Blockers, Autonomic Nervous System Blockers, and Free Radical Scavengers On Diazinon-Induced Hyposecretion Of Insulin From Isolated Islets of Langerhans in RatsHyperglycaemia has been observed with exposure to organophosphate insecticides. This study was designed to compare the effects of calcium channel blockers, alpha-adrenergic, beta-adrenergic, and muscarinic receptor blockers, and of free radical scavengers on insulin secretion from diazinon-treated islets of Langerhans isolated from the pancreas of rats using standard collagenase digestion, separation by centrifugation, and hand-picking technique. The islets were then cultured in an incubator at 37 °C and 5 % CO2. In each experimental set 1 mL of 8 mmol L-1 glucose plus 125 μg mL-1 or 625 μg mL-1 of diazinon were added, except for the control group, which received 8 mmol L-1 glucose alone. The cultures were then treated with one of the following: 30 μmol L-1 atropine, 100 μmol L-1 ACh + 10 μmol L-1 neostigmine, 0.1 μmol L-1 propranolol, 2 μmol L-1 nifedipine, 50 μmol L-1 phenoxybenzamine, or 10 μmol L-1 alphatocopherol. In all experiments, diazinon significantly reduced glucose-stimulated insulin secretion at both doses, showing no dose dependency, as the average inhibition for the lower dose was 62.20 % and for the higher dose 64.38 %. Acetylcholine and alpha-tocopherol restored, whereas atropine potentiated diazinon-induced hyposecretion of insulin. Alpha-, beta- and calcium channel blockers did not change diazinon-induced effects. These findings suggest that diazinon affects insulin secretion mainly by disturbing the balance between free radicals and antioxidants in the islets of Langerhans and by inducing toxic stress.
Collapse
|
18
|
Amirkabirian N, Teimouri F, Esmaily H, Mohammadirad A, Aliahmadi A, Abdollahi M. Protection by Pentoxifylline of Diazinon-Induced Toxic Stress in Rat Liver and Muscle. Toxicol Mech Methods 2008; 17:215-21. [DOI: 10.1080/15376510600943783] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|