scholarly journals Alpha Mangostin and Xanthone from Mangosteen (Garcinia mangostana l.) Role on Glucose Tolerance and Glucose Transporter-4 in Diabetes Mellitus

2017 ◽  
Vol 9 (09) ◽  
Author(s):  
Ratwita W. ◽  
Sukandar E. Y. ◽  
Adnyana I. K. ◽  
Kurniati N. F.
Keyword(s):  
Blood Glucose ◽  
Glucose Tolerance ◽  
Glucose Transporter ◽  
Glucose Tolerance Test ◽  
Tolerance Test ◽  
Positive Control ◽  
Control Group ◽  
Cardiac Cell ◽  
Glut 4 ◽  
Adipocyte Cell

Objective: This research elaborated role of alpha mangostin and xanthone on glucose tolerance and Glucose Transporter (GLUT)-4 by measuring blood glucose level and GLUT-4 expression on cardiac cell musce and adipocyte cell culture. Methods: Glucose tolerance test were conducted using male wistar rat divided into 9 groups, which were normal, control (D-Glucose induced only), glibenclamide, various doses of -mangostin and xanthone (5, 10, 20 mg/kgbw). All group induced by D-glucose 3 g/kg orally 30 minutes later. Blood glucose levels changes were observed at 90th and 150th minute. GLUT-4 study conducted for 3 weeks on mice that divided into 10 groups which were normal, diabetic control mice (alloxan induced only), metformin, glibenclamide, various doses of -mangostin and xanthone (5, 10, 20 mg/kgbw). GLUT-4 expression than observed on cardiac cell muscle. While other study observed GLUT-4 expression on adipocyte cell culture that treated with -mangostin/xanthone/pioglitazone. Results: Normal group (non-diabetic) responds slightly to the administration of glucose in glucose tolerance test. Blood glucose level in every group in the 90th up to 150th minute decreased significantly when compared to the positive control group (p >0.05). This shows that glucose tolerance does not occur in all treated groups althought they were treated with high glucose consentration. GLUT-4 expressions in mice cardiac-musce cells that treated with -mangostin/xanthone/ glibenclamide/metformin significantly increased when compared to the positive control group, except in group treated with xanthone 5 mg/kgbw. GLUT-4 expressions also increase in adipocytes that treated with 3.125 mM; 6.25 mM and 25 mM 𝛼–mangostin, equivalent to pioglitazone. All treatment group results significantly different when compared with control. The effect of 𝛼–mangostin on GLUT-4 expression better than xanthone’s. Conclusion: Alpha mangostin and xanthone are two substances that showed protective effect to glucose tolerance and also have potential effect to improve insulin resistance by increasing GLUT-4 on cardiac muscle and adipocyte.

scholarly journals Effect of Gongronema latifolium on lipid profile, oral glucose tolerance test and some hematological parameters in fructoseinduced hyperglycemia in rats Idara Asuquo Okon1, Usenobong Friday Ufot2*, Ufuoma

2019 ◽  
Author(s):  
Idara Asuquo Okon ◽  
Usenobong Friday Ufot ◽  
Ufuoma Gabriel Onoyeraye ◽  
Elvis Onukwugha Nwachukwu ◽  
Daniel Udofia Owu
Keyword(s):  
Blood Glucose ◽  
Glucose Tolerance ◽  
Lipid Profile ◽  
Glucose Tolerance Test ◽  
Tolerance Test ◽  
Control Group ◽  
Oral Glucose ◽  
Free Access ◽  
Crude Leaf Extract ◽  
Gongronema Latifolium

Gongronema latifolium (GL) has been used traditionally in the management of various ailments. The effects of GL on some haematological and biochemical parameters in fructose-induced hyperglycaemia were studied. Forty rats were randomly assigned to four groups of 10 rats each. Control was received normal rat chow, fructose + G. latifolium group was received 66% D-fructose mixed with 34% chow and crude leaf extract of GL daily. Fructose only group was received 66% D-fructose and the fourth group was received GL extract only respectively for 30 days. All animals were fed ad libitum and had free access to water. Oral blood glucose tolerance test was determined using 2 g/Kg in all groups of rats and blood samples were obtained by cardiac puncture for haematological and biochemical analyses. The blood glucose level was significantly raised in fructose-fed only group (140.6 ± 2.9 mg/dl) when compared to GL + fructose group (110.3 ±5.8 mg/dl) and control (88.1 ± 3.6 mg/dl). There was observed significant reductions in blood glucose and glucose tolerance following GL supplementation. The lipid profile values were significantly higher in fructose-fed group compared with other groups but these levels were significantly reduced following GL supplementation. The white blood cells (WBC) and platelets count in GL and fructose + GL group were significantly raised when compared with the control group. The red cell parameters were not significantly altered compared to the control group. The results show that the consumption of G. latifolium reduces hyperglycaemia and hyperlipidaemia hence the cardiovascular risk factors observed in diabetes mellitus.

scholarly journals Low expression of insulin signaling molecules impairs glucose uptake in adipocytes after early overnutrition

2007 ◽  
Vol 195 (3) ◽  
pp. 485-494 ◽  
Author(s):  
Ananda L Rodrigues ◽  
Érica P G De Souza ◽  
Simone V Da Silva ◽  
Dayane S B Rodrigues ◽  
Aline B Nascimento ◽  
...  
Keyword(s):  
Glucose Tolerance ◽  
Glucose Uptake ◽  
Glucose Transport ◽  
Glucose Transporter ◽  
Plasma Lipid ◽  
Tolerance Test ◽  
Control Group ◽  
Lipid Levels ◽  
Adult Rats ◽  
Glut 4

Experimental and clinical studies have demonstrated that early postnatal overnutrition represents a risk factor for later obesity and associated metabolic and cardiovascular disturbance. In the present study, we assessed the levels of glucose transporter 4 (GLUT-4), GLUT-1, insulin receptor (IR), IR substrate 1 (IRS-1), phosphatidylinositol 3-kinase (PI3K) and Akt expression, as well as insulin-stimulated glucose transport and Akt activity in adipocytes from adult rats previously raised in small litters (SL). The normal litter (NL) served as control group. We also investigated glycemia, insulinemia, plasma lipid levels, and glucose tolerance. Our data demonstrated that early postnatal overfeeding induced a persistent hyperphagia accompanied by a significant increase in body weight until 90 days of age. The SL group also presented a significant increase (∼42%) in epidydimal fat weight. Blood glucose, plasma insulin, and lipid levels were similar among the animals from the SL and NL groups. While insulin-stimulated glucose uptake was approximately twofold higher in adipocytes from the NL group, no stimulatory effect was observed in the SL group. The impaired insulin-stimulated glucose transport in adipose cells from the SL rats was associated with a significant decrease in GLUT-4, IRS-1 and PI3K expression, and Akt activity. In contrast, IR and Akt expression in adipocytes was not different between the SL and NL groups. Despite these alterations, our results showed no differences in glucose tolerance test in rats raised under different feeding conditions. Our findings reinforce a potent and long-term effect of neonatal overfeeding, which can program major changes in the metabolic regulatory mechanisms.

A novel partial agonist of GPBA reduces blood glucose level in a murine glucose tolerance test

2017 ◽  
Vol 814 ◽  
pp. 130-137 ◽  
Author(s):  
Rina Enomoto ◽  
Aya Kurosawa ◽  
Yoshiaki Nikaido ◽  
Misaki Mashiko ◽  
Toshihiko Saheki ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Glucose Tolerance ◽  
Blood Glucose Level ◽  
Glucose Level ◽  
Glucose Tolerance Test ◽  
Partial Agonist ◽  
Tolerance Test

scholarly journals Pharmacological potential of methanol extract of Anacardium occidentale stem bark on alloxan-induced diabetic rats

2018 ◽  
Vol 5 (7) ◽  
pp. 2440-2454
Author(s):  
D. A. Omoboyowa ◽  
F. O. Afolabi ◽  
T. C. Aribigbola
Keyword(s):  
Blood Glucose ◽  
Glucose Tolerance ◽  
Glucose Tolerance Test ◽  
Methanol Extract ◽  
Stem Bark ◽  
Tolerance Test ◽  
Diabetic Rats ◽  
Oral Glucose ◽  
Oral Glucose Tolerance ◽  
Β Cells

Background: The anti-hyperglycemic potential of methanol stem bark extract of Anacardium occidentale (MSBEAO) was investigated using an alloxan-induced diabetic rat model. Alloxan administration induces the generation of free radicals which can affect antioxidant status resulting in the disruption of the β-cells of the pancreas. Therefore, this study examines the antioxidant potential of the plant extract and the ameliorating effect on the pancreas of alloxan-induced diabetic rats. Methods: Diabetes was induced by intraperitoneal injection of 150 mg/kg body weight of alloxan monohydrate. MSBEAO, at a concentration of 100 or 200 mg/kg b.w. was orally administered to alloxan-induced diabetic rats and normal rats. The hypoglycemic effect, oral glucose tolerance test, and biochemical assay of alloxan-induced diabetic rats were assayed using standard procedures. Results: Preliminary phytochemical screening of the extract revealed the presence of alkaloids, tannins, saponins, terpenoids, carbohydrates, and phenols at moderate concentrations. The lethality dose (LD50) of the plant extract was found to be equal to or less than 5000 mg/kg b.w. The hypoglycemic effect of the extract on the non-diabetic rats revealed a significant (p<0.05) decrease in the blood glucose concentration of animals administered with 1 g/kg b.w. of the extract, compared to normal control rats administered with normal saline. In the oral glucose tolerance test, the methanol extract exerted the highest response, similar to glibenclamide after 15 and 30 minutes of administration, compared to the control rats. The methanol extract yielded the highest blood glucose lowering effects after 9 days of treatment (p<0.05), compared to diabetic rats administered with normal saline and 0.3 mg/kg b.w. of glibenclamide. Administration of the extract at 200 mg/kg b.w. showed improved pancreas architecture and regeneration of the β-cells, compared with the pancreas of animals in the other groups. Conclusion: The results of this study suggest that MSBEAO is a potentially effective agent for the management of diabetes which might result from the antioxidant-generating capacity of the stem bark.

scholarly journals GESTATIONAL DIABETES MELLITUS

2012 ◽  
Vol 19 (04) ◽  
pp. 462-468
Author(s):  
M. IKRAM ◽  
SYED HAIDER HASAN ALAM ◽  
SHAFQAT MUKHTAR ◽  
M. Saeed
Keyword(s):  
Diabetes Mellitus ◽  
Blood Glucose ◽  
Gestational Diabetes ◽  
Glucose Tolerance ◽  
Gestational Diabetes Mellitus ◽  
Glucose Tolerance Test ◽  
Fasting Blood Glucose ◽  
Tolerance Test ◽  
Oral Glucose ◽  
Oral Glucose Tolerance

Introduction: Gestational diabetes mellitus is common disorder in pregnancy. It is associated with adverse pregnancy outcome. There is no consensus regarding the optimal approach to screening of gestational diabetes mellitus. The present study has tried toobserve the value of fasting blood glucose in screening of gestational diabetes. Objective: To determine the frequency of patients in whomfasting blood glucose and 100gm glucose tolerance show agreement for screening of gestational diabetes mellitus at 24 -28 wks. Studydesign: Comparative cross sectional study. Settings: The study was conducted at Gynecology and Obstetrics department Shaikh ZayedFederal Post Graduate Institute Lahore. Duration of study with dates: 6 months from 12Nov 2010 to 11 May 2011. Material and method: Thestudy included 135 booked patients with positive family history of diabetes mellitus. All patients underwent fasting blood glucose at 24-28 weeksof gestation, regardless of results of fasting blood glucose on next visit they underwent 100g oral glucose tolerance test (OGTT). The agreementbetween fasting blood glucose and 100g oral glucose tolerance test was calculated in frequency and percentages. Results: The mean age ofwomen in studied population was 27.15±3.70.Out of 135 patients 86.7 %( 117) showed agreement between results of fasting blood glucose and100g OGTT while 13.31 %( 18) showed no agreement between both of the tests. Conclusions: Fasting blood glucose is a good screeningoption for gestational diabetes mellitus along with positive history. It provides a simple, cheap and more practical test for screening of gestationaldiabetes mellitus. However diagnostic confirmation with 100g OGTT should be done.

scholarly journals Preliminary phytochemical screening and evaluation of hypoglycemic properties of the root extract of Uveria chamae

2015 ◽  
Vol 10 (2) ◽  
pp. 326 ◽  
Author(s):  
Emordi Jonathan Emeka ◽  
Agbaje Esther Oluwatoyin ◽  
Oreagba Ibrahim Adekunle ◽  
Iribhogbe Osede Ignis
Keyword(s):  
Single Dose ◽  
Blood Glucose ◽  
Glucose Tolerance ◽  
Glucose Tolerance Test ◽  
Tolerance Test ◽  
Oral Glucose ◽  
Oral Glucose Tolerance ◽  
Phytochemical Screening ◽  
Glucose Levels ◽  
Blood Glucose Levels

<p>The purpose of this study is to evaluate the hypoglycaemic properties and preliminary phytochemical screening of <em>Uveria chamae</em>. The hypoglycaemic properties of <em>Uveria chamae</em> was assessed on normoglycaemic rat that received single dose of the extract at 250 and 500 mg/kg body weight and blood glucose levels estimated at 2, 4, and 6 hours (single dose study). The hypoglycaemic property of the extract was also evaluated in normoglycemic rats by oral glucose tolerance test. Phytochemical screening of the extract for the presence of secondary metabolites was performed with standard methods. The extract showed a significant (p&lt;0.05) reduction in blood glucose levels at 2h and 6h compared to control.  The oral glucose tolerance test  result also showed a significant decrease (p&lt;0.05) in blood glucose levels . The study showed that the extract, <em>Uveria chamae</em> has hypoglycaemic properties which may be accounted for by the presence of the phytochemicals.</p><p> </p>

GLUCOSE TOLERANCE TESTS MODELING & PATIENT-SIMULATION FOR DIAGNOSIS

2001 ◽  
Vol 01 (02) ◽  
pp. 193-223 ◽  
Author(s):  
SARMA S. DITTAKAVI ◽  
DHANJOO N. GHISTA
Keyword(s):  
Blood Glucose ◽  
Glucose Tolerance ◽  
Oral Glucose Tolerance Test ◽  
Glucose Tolerance Test ◽  
Patient Simulation ◽  
Tolerance Test ◽  
Oral Glucose ◽  
Model Parameters ◽  
Oral Glucose Tolerance ◽  
Glucose Tolerance Tests

Diabetes mellitus is a heterogeneous clinical syndrome characterized by hyperglycemia and long-term specific complications: retinopathy, neuropathy, nephropathy, and cardiomyopathy. Automatic neuropathy leads to visceral denervation producing a variety of clinical abnormalities: cardiac and respiratory dysrythaemias, gastrointestinal motility disorders, urinary bladder dysfunction and impotence. Diabetes mellitus is a leading cause of blindness; renal failure and limb amputation all over the world. The need to detect diabetic risk factors and treat organ disorders and complications associated with diabetes provides the impetus for us to develop the technology for assessment of diabetes, its etiology and severity, as well as for assessing the efficacy of pharmacological therapy. This paper concerns: (i) modelling of blood-glucose regulation and tolerance-testing, (ii) demonstrating patient-simulation of the blood-glucose regulatory models, by means of which the model parameters can be evaluated and related to physiological parameters, and (iii) elucidating how the glucose-regulatory system model's pole-zero representation and the blood glucose-insulin transfer-function can explain the blood glucose response data in intravenous and oral glucose tolerance tests. An easy-to-implement simple clinical-application method is developed to simulate the response of the blood-glucose regulatory model in diabetic patients during intravenous glucose tolerance test and to estimate the model parameters, which can then enable differential diagnosis of diabetes and its severity as well as in early detection of risk-to-diabetes. In the oral glucose-tolerance test, the role of the gut is to facilitate transport of glucose across the intestinal wall. The Michaelis-Menten equation, describing this enzyme-catalyzed reaction rate, can be employed to conclude that the intestinal glucose absorption rate into the blood-compartment from the gut during the oral glucose-tolerance test is constant, almost resembling a rectangular pulse Nevertheless, we have formulated a new rate-control model to simulate the oral glucose-tolerance test data, by means of the response-function of a second-order system of a single-compartment (consisting of the gut and the blood-glucose pool), with the oral glucose-bolus as the impulse-input. We have also demonstrated application of this rate-control model to patients undergoing oral glucose-tolerance test, to evaluate the model parameters. By categorizing the ranges of these parameters for normals and diabetics (varying from mild to severe), we can reliably apply this model and procedure clinically.

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