scholarly journals Vanadyl Sulfate Treatment Stimulates Proliferation and Regeneration of Beta Cells in Pancreatic Islets

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Samira Missaoui ◽  
Khémais Ben Rhouma ◽  
Mohamed-Tahar Yacoubi ◽  
Mohsen Sakly ◽  
Olfa Tebourbi
Keyword(s):  
Blood Glucose ◽  
Insulin Sensitivity ◽  
Pancreatic Islets ◽  
Beta Cells ◽  
Control Level ◽  
Diabetic Rats ◽  
Diabetic Group ◽  
Dependent Manner ◽  
Glucose Levels ◽  
Blood Glucose Levels

We examined the effects of vanadium sulfate (VOSO4) treatment at 5 and 10 mg/kg for 30 days on endocrine pancreas activity and histology in nondiabetic and STZ-induced diabetic rats. In diabetic group, blood glucose levels significantly increased while insulinemia level markedly decreased. At the end of treatment, VOSO4at a dose of 10 mg/Kg normalized blood glucose level in diabetic group, restored insulinemia, and significantly improved insulin sensitivity. VOSO4also increased in a dose-dependent manner the number of insulin immunopositive beta cells in pancreatic islets of nondiabetic rats. Furthermore, in the STZ-diabetic group, the decrease in the number of insulin immunopositive beta cells was corrected to reach the control level mainly with the higher dose of vanadium. Therefore, VOSO4treatment normalized plasma glucose and insulin levels and improved insulin sensitivity in STZ-experimental diabetes and induced beta cells proliferation and/or regeneration in normal or diabetic rats.

scholarly journals HYPOGLYCEMIC ACTIVITY OF A NOVEL POLYHERBAL FORMULATION IN STREPTOZOTOCIN-INDUCED DIABETIC RATS: A THERAPEUTIC STUDY

2019 ◽  
pp. 218-223
Author(s):  
PULAK MAJUMDER ◽  
PARIDHAVI M
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Beta Cells ◽  
Density Lipoprotein ◽  
Diabetic Rats ◽  
Glucose Levels ◽  
Polyherbal Formulation ◽  
Blood Glucose Levels ◽  
Therapeutic Study ◽  
Glutamyl Transferase

Objective: The concept of the synergistic effect of poly-herbalism was as old as medicine history. Present novel polyherbal formulation (PHF) composed of five different herbs. The present investigation aimed to evaluate the synergistic therapeutic hypoglycemic potential of PHF against streptozotocin (STZ) (60 mg/kg b.w, ip)-induced diabetic rats. Methods: For this therapeutic study, the dose was framed orally once a day to the test objects after STZ dosing at 500 mg/kg/5 ml dosage levels for 21 days. The transformation of body weight and blood glucose level was examined, and the histopathological changes of beta cells of the pancreas, cellular architectures of liver and kidney were also perceived after scarification of the objects. Results: The outcomes were compared to that of glibenclamide (5 mg/kg) treated group. Declines of body weight and blood glucose levels were perceived in STZ-induced diabetic animals very significantly (p<0.01 or p<0.05). However, these diabetic changes were significantly (p<0.01 or p<0.05) decreased in PHF-dosing groups revealed more encouraging effects compared to that of glibenclamide. In the other hand, various liver function and enzymes test (creatinine, urea, total bilirubin, total albumin, alkaline phosphatase, gamma-glutamyl transferase, aspartate transaminases, and alanine transaminases) and lipid profile (total cholesterol, triglycerides, high-density lipoprotein cholesterol, total protein, low-density lipoprotein [LDL], and very LDL) studies strongly indicate the potential action of this novel formulation. Conclusions: It is deliberated that PHF has the favorable effect to normalize the blood glucose levels, and also rejuvenation and reproduction of beta cells lead a better futuristic ant diabetic therapy for diabetic management.

Enzymatic digest of whey protein and wheylin-1, a dipeptide released in the digest, increase insulin sensitivity in an Akt phosphorylation-dependent manner

2018 ◽  
Vol 9 (9) ◽  
pp. 4635-4641 ◽  
Author(s):  
Maiko Ogiwara ◽  
Wakana Ota ◽  
Takafumi Mizushige ◽  
Ryuhei Kanamoto ◽  
Kousaku Ohinata
Keyword(s):  
Blood Glucose ◽  
Insulin Sensitivity ◽  
Whey Protein ◽  
Dependent Manner ◽  
Increase Insulin Sensitivity ◽  
Akt Phosphorylation ◽  
Glucose Levels ◽  
Blood Glucose Levels

Wheylin-1 is the first whey-derived peptide that increases insulin sensitivity in an Akt phosphorylation-dependent manner and lowers blood glucose levels.

scholarly journals Phytochemical and Hypoglycemic Evaluation of Alangium Salviifolium Root Extract

2011 ◽  
Vol 3 (2) ◽  
pp. 393-402 ◽  
Author(s):  
Ahad H. A. ◽  
Padmaja B. S ◽  
Yesupadam P ◽  
Guruprakash P ◽  
Sravanthi M ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Ethanolic Extract ◽  
Diabetic Rats ◽  
Control Group ◽  
Root Extract ◽  
Alcoholic Extract ◽  
Dependent Manner ◽  
Standard Drug ◽  
Glucose Levels ◽  
Blood Glucose Levels

.The main purpose of present study was to perform phytochemical screening and explore the anti-hyperglycaemic properties of Alangium salvifolium root extract in normal and alloxan induced diabetic rats. A. salvifolium root gave maximum extractive values of 6.4 % w/w with Ethanol and other parameters were within limits. The extract gave positive tests for phytosterols, triterpenes, flavonoids, carbohydrates and alkaloids. The ethanolic extract of A. salvifolium was found to be nearly as potent as tolbutamide in decreasing the blood glucose levels in normal fasting rats. In normal control group the percent reduction in blood glucose indicated that the extract is fast acting. The extract showed significant decrease in blood glucose, when compared with tolbutamide. The evaluated blood glucose levels in alloxan induced diabetic rats were significantly decreased up to 24th h compared to tolbutamide. A single oral administration of alcoholic extract at doses 100, 250 and 500 mg per kg produced a significant blood glucose reduction in a dose dependent manner in normal and diabetic rats. These data confirm the hypoglycaemic and anti-hyperglycaemic effect of alcoholic extract of A. salvifolium root in normal and diabetic rats respectively when compared with standard drug tolbutamide.Keywords: Alangium salvifolium; Ethanolic extract; Alloxan induced; Hypoglycaemic action.© 2011 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.doi:10.3329/jsr.v3i2.7047                J. Sci. Res. 3 (2), 393-402 (2011)

Antihyperglycemic Activity of Micromeria Graeca Aqueous Extract in Streptozotocin-Induced Diabetic Rats

2020 ◽  
Vol 20 ◽  
Author(s):  
Mourad Akdad ◽  
Amine Azzane ◽  
Fadwa El Ouady ◽  
Abdelhadi Moujani ◽  
Farid El Khallouki ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Oral Administration ◽  
Antioxidant Capacity ◽  
Aqueous Extract ◽  
Diabetic Rats ◽  
Phytochemical Analysis ◽  
Dependent Manner ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Dpph Method

Aims: This study aimed to investigate the effect of Micromeria graeca on blood glucose levels and lipid parameters in an experimental model of diabetes. Objective: This study aimed to evaluate the antihyperglycemic and antihyperlipidemic effects of the aqueous extract of Micromeria graeca (M. graeca) aerial parts (AEMG) under physiological (normal rats) and pathological (STZ-induced diabetic rats) conditions. Additionally, we analyzed the phytochemical composition and antioxidant capacity. Methods: The effects of the acute and sub-chronic administration of AEMG (20 mg/kg) on blood glucose levels and lipid profiles were evaluated in normal and streptozotocin-induced diabetic rats. Moreover, the phytochemical analysis was carried with standard tests and estimation of total phenolics compounds by Folin–Ciocalteu reagent. The antioxidant activity was realized by the DPPH method. Results: Single oral administration of M. greaca aqueous extract decreased blood glucose levels 4 and 6 hours (p<0.01) after treatment in diabetic rats. In accordance, the repeated oral administration of M. graeca showed a significant reduction in blood glucose levels in diabetic rats since the second day to the end of the period experiment (p<0.0001). In addition, two weeks of treatment with M. graeca reduced total cholesterol levels (p<0.05) with a significant increase of HDL-c level (p<0.01) in diabetic rats. Moreover, M. graeca scavenged DPPH radical in a dose-dependent manner (IC50=0.48 mg/ml), whereas IC50 was 0.55 mg/ml for BHT. Phytochemical analysis showed the richness of Micromeria graeca on polyphenols (281.94±4.61 mg GAE/1 g), flavonoids, tannins, glycosides, saponins, sterols, sesquiterpenes, and terpenoids. Conclusion: AEMG exhibits antihyperglycemic and antihyperlipidemic activities in STZ-induced diabetic rats and a potent antioxidant capacity.

scholarly journals Hibiscus noldea (Malvaceae) Aqueous Extract Prevents Insulin Resistance and Protects Pancreatic Islets From Dexamethasone Damages in Rat.

2017 ◽  
Vol 9 (2) ◽  
Author(s):  
Ngueguim Tsofack Florence ◽  
Djientcheu Tientcheu Jean Philippe ◽  
Donfack Jean Hubert ◽  
Gounoue Kamkumo Raceline ◽  
Dzeufiet Djomeni Paul Desire ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Body Weight ◽  
Blood Glucose ◽  
Lipid Profile ◽  
Pancreatic Islets ◽  
Aqueous Extract ◽  
Hepatic Glycogen ◽  
Dependent Manner ◽  
Glucose Levels ◽  
Blood Glucose Levels

<p><em>Hibiscus noldea</em> leaves-stems aqueous extract is used in Cameroonian traditional medecine to manage diabetes. To investigate the preventive effect of <em>Hibiscus noldea</em> aqueous extract on dexamethasone-induced insulin resistance, the animals received one of the following treatments: distilled water (10 mL/kg), metformine (200 mg/kg), or <em>H. noldea</em> (100 or 200 mg/kg) concomitantly with dexamethasone (0.5 mg/kg, ip) for ten days. Body weight was evaluated daily and blood glucose levels were measured. At the end of experiment, insulin sensitivity test was performed and lipid profile, transaminases Aspartate amino transferase, Alanin amino transferase, malondialdehyde, superoxide dismutase, catalase, and reduced glutathione were evaluated. Histological analysis of the liver was investigated to estimate glycogen content using Periodic Acid Schiff coloration and histomorphometry of pancreatic islets area was performed.</p><p>The administration of dexamethasone during ten days induced body weight loss, hyperglycaemia, insulinresistance, an imbalance in lipid profile, an increase in transaminases and oxidative stress. Dexamethasone treatment also induced an increase in the pancreatic islets area and depletion in the levels of hepatic glycogen. Concomitant administration of dexamethasone and the aqueous plant extract prevented the rise in blood glucose levels, reduced insulinresistance, improved lipid profile and oxidative status. The aqueous extract of <em>H. noldea</em> prevented the use of glycogen storage and the increase in pancreatic islet area in dose dependent manner.</p><p>Conclusion: The stem leaves aqueous extract from <em>Hibiscus noldea</em> have the ability to reduce insulinresistance via its antihyperglycaemic, hypolipidemic and antioxidant activities. These results justify the use of this extract in the management of diabetic state.</p>

scholarly journals SIRT1 Activation by Equisetum arvense L. (Horsetail) Modulates Insulin Sensitivity in Streptozotocin Induced Diabetic Rats

Molecules ◽  
2020 ◽  
Vol 25 (11) ◽  
pp. 2541
Author(s):  
Csaba Hegedűs ◽  
Mariana Muresan ◽  
Andrea Badale ◽  
Mariann Bombicz ◽  
Balázs Varga ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Insulin Sensitivity ◽  
Diabetic Rats ◽  
Signal Pathways ◽  
Equisetum Arvense ◽  
Control Groups ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Inflammatory Processes ◽  
Cardioprotective Effects

BACKGROUND: Equisetum arvense L., commonly known as field horsetail is a perennial fern of which extracts are rich sources of phenolic compounds, flavonoids, and phenolic acids. Activation of SIRT1 that was shown to be involved in well-known signal pathways of diabetic cardiomyopathy has a protective effect against oxidative stress, inflammatory processes, and apoptosis that are the basis of diseases such as obesity, diabetes mellitus, or cardiovascular diseases. The aim of our study was to evaluate the antidiabetic and cardioprotective effects of horsetail extract in streptozotocin induced diabetic rats. METHODS: Diabetes was induced by a single intraperitoneal injection of 45 mg/kg streptozotocin. In the control groups (healthy and diabetic), rats were administered with vehicle, whilst in the treated groups, animals were administered with 50, 100, or 200 mg/kg horsetail extract, respectively, for six weeks. Blood glucose levels, glucose tolerance, and insulin sensitivity were determined, and SIRT1 levels were measured from the cardiac muscle. RESULTS: The horsetail extract showed moderate beneficial changes in blood glucose levels and exhibited a tendency to elevate SIRT1 levels in cardiomyocytes, furthermore a 100 mg/kg dose also improved insulin sensitivity. CONCLUSIONS: Altogether our results suggest that horsetail extract might have potential in ameliorating manifested cardiomyopathy acting on SIRT1.

Evaluation of Glucose and Lipid Lowering Activity of Arganimide A in Normal and Streptozotocin-Induced Diabetic Rats

2019 ◽  
Vol 19 (4) ◽  
pp. 503-510 ◽  
Author(s):  
Mohamed Eddouks ◽  
Farid Khallouki ◽  
Robert W. Owen ◽  
Morad Hebi ◽  
Remy Burcelin
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Oral Administration ◽  
Lipid Profile ◽  
Plasma Cholesterol ◽  
Diabetic Rats ◽  
Lipid Lowering ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Lowering Activity

Aims: Arganimide A (4,4-dihydroxy-3,3-imino-di-benzoic acid) is a compound belonging to a family of aminophenolics found in fruit of Argania spinosa. The purpose of this study was to investigate the glucose and lipid lowering activity of Arganimide A (ARG A). Methods: The effect of a single dose and daily oral administration of Arganimide A (ARG A) on blood glucose levels and plasma lipid profile was tested in normal and streptozotocin (STZ) diabetic rats at a dose of 2 mg/kg body weight. Results: Single oral administration of ARG A reduced blood glucose levels from 26.50±0.61 mmol/L to 14.27±0.73 mmol/L (p<0.0001) six hours after administration in STZ diabetic rats. Furthermore, blood glucose levels were decreased from 5.35±0.30 mmol/L to 3.57±0.17 mmol/L (p<0.0001) and from 26.50±0.61 mmol/L to 3.67±0.29 mmol/L (p<0.0001) in normal and STZ diabetic rats, respectively, after seven days of treatment. Moreover, no significant changes in body weight in normal and STZ rats were shown. According to the lipid profile, the plasma triglycerides levels were decreased significantly in diabetic rats after seven days of ARG treatment (p<0.05). Moreover, seven days of ARG A treatment decreased significantly the plasma cholesterol concentrations (p<0.001). Conclusion: ARG A possesses glucose and lipid-lowering activity in diabetic rats and this natural compound may be beneficial in the treatment of diabetes.

Mentha pulegium Aqueous Extract Exhibits Antidiabetic and Hepatoprotective Effects in Streptozotocin-Induced Diabetic Rats

2019 ◽  
Vol 19 (3) ◽  
pp. 292-301
Author(s):  
Omar Farid ◽  
Naoufel Ali Zeggwagh ◽  
Fadwa EL Ouadi ◽  
Mohamed Eddouks
Keyword(s):  
Blood Glucose ◽  
Glucose Tolerance ◽  
Aqueous Extract ◽  
Morphometric Analysis ◽  
Diabetic Rats ◽  
Mentha Pulegium ◽  
Glucose Levels ◽  
Histological Sections ◽  
Blood Glucose Levels ◽  
Liver And Pancreas

Objective: The aim of this work was to evaluate the antihyperglycemic activity of aerial parts aqueous extract (A.P.A.E) of Mentha pulegium (M. pulegium) on blood glucose levels in normal and streptozotocin(STZ)-induced diabetic rat. The glucose tolerance was evaluated in normal rats. Moreover, the histological sections and morphometric analysis at the liver and pancreas have been carried out in this investigation both in normal and STZ-diabetic rats. Methods: The effect of A.P.A.E of M. pulegium (20 mg/kg) on blood glucose levels was investigated in normal and diabetic rats (n=6). Histopathological changes in liver and pancreas were examined under phase contrast microscope and a preliminary screening for various bioactive constituents was realized according to standard methods. Key Findings: Both single and repeated oral administration of A.P.A.E (20 mg/kg) caused a significant reduction in blood glucose levels in STZ-diabetic rats (p<0.0001). The morphometric analysis and histological sections realized in pancreas and liver have showed the beneficial effect of the A.P.A.E in cellular population. According to oral glucose tolerance test (OGTT), the aqueous extract has revealed an improvement of glucose tolerance in normal rat. Furthermore, the preliminary phytochemical screening of A.P.A.E of M. pulegium has demonstrated the presence of various metabolite compounds including polyphenols, flavonoids, terpenoids tannins, cyanidins, sesquiterpenes, and glycosides. Conclusion: We conclude that the A.P.A.E of M. pulegium (20 mg/kg) exhibits a potent antihyperglycemic activity in STZ diabetic rats.

Antidiabetic Effect of Aqueous Corrigiola telephiifolia in Streptozotocin- Induced Diabetic Rats

2020 ◽  
Vol 10 (1) ◽  
pp. 61-68 ◽  
Author(s):  
Morad Hebi ◽  
Mohamed Eddouks
Keyword(s):  
Blood Glucose ◽  
Glucose Tolerance Test ◽  
Tolerance Test ◽  
Diabetic Rats ◽  
Oral Glucose ◽  
Oral Glucose Tolerance ◽  
Phytochemical Screening ◽  
Antidiabetic Effect ◽  
Glucose Levels ◽  
Blood Glucose Levels

Background: Corrigiola telephiifolia Pourr, is a perennial species, woody distributed throughout the north of Africa. This plant is used in traditional Mediterranean preparations and has many traditional uses especially treatment of diabetes. Aim/Methods: The current research was carried out to evaluate the antidiabetic effect of Aerial Parts of Aqueous Extract (APAE) of Corrigiola telephiifolia (C. telephiifolia) on both normal and streptozotocin (STZ)-induced diabetic rats treated at a dose of 5 mg/kg for fifteen days. Additionally, the histopathological changes in the liver, morphometric analysis, Oral Glucose Tolerance Test (OGTT) in normal rats and preliminary phytochemical screening for various components were realized. Results: Single oral administration of the APAE of C. telephiifolia (5mg/kg) showed no significant change in glycaemia of normal and STZ-induced diabetic rats. In contrast, repeated oral administration of C. telephiifolia reduced blood glucose levels from 4.11 ± 0.10 mmol/L to 3.16 ± 0.16 mmol/L (p<0.01) 15 days after administration in normal rats. Furthermore, blood glucose levels decreased from 17.84 ± 1.75mmol/L to 1.93 ± 0.33 mmol/L (p<0.0001) in STZ diabetic rats after fifteen days of treatment. According to the oral glucose tolerance test, C. telephiifolia (5 mg/kg) was shown to prevent significantly the increase in blood glucose levels in normal treated rats 30 min after glucose administration when compared to the control group. Also, the liver architecture of diabetic rats treated by C. telephiifolia was improved when compared with the liver architecture of untreated diabetic rats. Concerning the preliminary phytochemical screening of C. telephiifolia, several compounds have been found such as polyphenols, flavonoids, saponins, mucilage and terpenoids. Conclusion: The results show that the aqueous extract of C. telephiifolia possesses significant antihyperglycemic activity.

scholarly journals Effects of Apocynin on Heart Muscle Oxidative Stress of Rats with Experimental Diabetes: Implications for Mitochondria

Antioxidants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 335
Author(s):  
Estefanía Bravo-Sánchez ◽  
Donovan Peña-Montes ◽  
Sarai Sánchez-Duarte ◽  
Alfredo Saavedra-Molina ◽  
Elizabeth Sánchez-Duarte ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Insulin Sensitivity ◽  
Cardiac Tissue ◽  
Diabetic Rats ◽  
Oxidase Inhibitor ◽  
Beneficial Effects ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Transport Chain ◽  
Male Wistar Rats

Diabetes mellitus (DM) constitutes one of the public health problems today. It is characterized by hyperglycemia through a defect in the β-cells function and/or decreased insulin sensitivity. Apocynin has been tasted acting directly as an NADPH oxidase inhibitor and reactive oxygen species (ROS) scavenger, exhibiting beneficial effects against diabetic complications. Hence, the present study’s goal was to dissect the possible mechanisms by which apocynin could mediate its cardioprotective effect against DM-induced oxidative stress. Male Wistar rats were assigned into 4 groups: Control (C), control + apocynin (C+A), diabetes (D), diabetes + apocynin (D+A). DM was induced with streptozotocin. Apocynin treatment (3 mg/kg/day) was applied for 5 weeks. Treatment significantly decreased blood glucose levels and insulin resistance in diabetic rats. In cardiac tissue, ROS levels were higher, and catalase enzyme activity was reduced in the D group compared to the C group; the apocynin treatment significantly attenuated these responses. In heart mitochondria, Complexes I and II of the electron transport chain (ETC) were significantly enhanced in the D+A group. Total glutathione, the level of reduced glutathione (GSH) and the GSH/ oxidized glutathione (GSSG) ratio were increased in the D+A group. Superoxide dismutase (SOD) and the glutathione peroxidase (GSH-Px) activities were without change. Apocynin enhances glucose uptake and insulin sensitivity, preserving the antioxidant defense and mitochondrial function.

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