scholarly journals Effects of malathion exposure on glucose tolerance test in diabetic rats; emphasis on oxidative stress and blood concentration of malathion by gas chromatography mass spectrometry

2021 ◽  
Vol 4 (02) ◽  
pp. 60-71
Author(s):  
Seyedeh-Azam Hosseini ◽  
Ali Faghihi zarandi ◽  
Somayyeh Karami-Mohajeri

Malathion is one of the widely used broad-spectrum organophosphate insecticides (OPI) in Iran. Malathion affects carbohydrate metabolism, causes hyperglycemia and increases the risk of diabetes. The present study was undertaken to investigate the potential of malathion to exacerbate diabetes-induced oxidative stress and impairment in blood glucose level and glucose tolerance in a sub-acute study. Malathion concentration in blood analyzed with gas chromatography mass spectrometry (GC-MS) after sample preparation of blood samples based on magnetic Fe3O4-supported graphene oxide (Fe3O4@ GO) nanoparticles. Type 1 diabetes was experimentally induced by intraperitoneal administration of streptozocin (65 mg kg-1). Diabetic and non-diabetic rats were treated with malathion at the dose of 150 mg kg-1day-1 or 0.5-4.0 mg L-1 in blood for 4 weeks. Fasting blood glucose was measured every week. At the end of the study, blood samples were investigated for markers of oxidative stress. Exposure to multiple doses of malathion decreased the total antioxidant capacity of plasma and the activity of catalase and superoxide dismutase enzymes in diabetic rats. Blood glucose and glucose tolerance test (GTT) and oxidative damages did not change significantly in diabetic rats exposed to malathion. However, malathion concentration in blood caused to increase GTT in malathion-treated non-diabetic rats. 

Author(s):  
Shaimaa M. Mohammed ◽  
Afnan E. Abd-Almonuim ◽  
Ahmed Majeed ◽  
Haithm Khlaf

The ethanol extract of Citrus maxima fruit peel was evaluated for its hypoglycaemic and hypolipidemic activity in normal and Streptozotocin (STZ)-induced diabetic rats, using fasting and glucose tolerance test measurements. Experiments were performed using Thirty-Two Male Wister albino rats randomly divided into 4 groups and each group have 8 animals. Group1 assigned as a control injected with normal saline only. Group 2 assigned as a diabetic control injected with Streptozotocin 50mg/Kg, Group 3 assigned for diabetic + Citrus maxima in a dose of 400mg/Kg, Group 4 is assigned for the diabetic + Citrus maxima in a dose of 600mg/Kg. The Streptozotocin is injected intraperitonially to all animal in the groups except the control group. Blood samples were collected from animal before and at 21th day end of the study period. Body weight, blood glucose, serum total cholesterol (TC), triglyceride (TG), and HDL cholesterol were analysed using diagnostic kits. Serum was separated from blood samples collected. In addition oral glucose tolerance test was performed in overnight fasted control animals. Results showed that Citrus maxima extract possesses significant antidiabetic activity against streptozotocin induced diabetic rats by decreasing blood glucose levels, maintaining body weight, and serum lipid concentrations to approximate normal level. Furthermore, the extract of the title plant possesses dose dependent antidiabetic activity.


2018 ◽  
Vol 5 (7) ◽  
pp. 2440-2454
Author(s):  
D. A. Omoboyowa ◽  
F. O. Afolabi ◽  
T. C. Aribigbola

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.


2021 ◽  
Vol 12 (2) ◽  
pp. 275-279
Author(s):  
Banafsha Zainal Bayat ◽  
Kawsar Alami ◽  
Sayed Yousof Mousavi

The aim of this study is the evaluation of the effect of Afghan talkhak (Acroptilon Repens) root aqueous extract on blood glucose level of diabetic rats. Rats were randomly divided into 5 groups (1 Normal, 1 Diabetic and 3 extract groups). Experimental diabetes was induced by single-dose intraperitoneal (i.p.) injection of streptozotocin (55 mg/kg) in diabetic and extracts groups. 72 hour later, the induction of diabetes was approved and extract groups were received Acroptilon Repens aqueous extract (200, 300, 400 mg/kg) by i.p. administration for 15 days. The blood glucose level and body weight of all groups were measured on baseline, 0, 5, 10 and 15th days. The glucose tolerance test had performed on days 0 and 15. The results showed that aqueous extract of Afghan Acroptilon Repens in extract groups (200 and 300 mg/kg) could significantly decrease the blood glucose level, and improve the glucose tolerance, as compared with the diabetic group (P<0.0001). However, there was not a significant difference in the blood glucose level and glucose tolerance test among the group which received 400 mg/kg dose of Acroptilon Repens and the diabetic group (P>0.05). In conclusion, Acroptilon Repens root aqueous extract possessed antihyperglycemic activity. 


Author(s):  
Mayank Bansal ◽  
Sweta Kumari ◽  
Yogesh Kumar Sharma

Diabetes mellitus is a metabolic disorder. This review article is planned to The anti-diabetic effect of Withania Coagulans have been successfully used in Ayurvedic and other traditional formulations and found to be efficient and inexpensive as compared to synthetic drugs. It also aims to test and verify the W. coagulans fruits, showed significant inhibition on postprandial rise in hyperglycemia post-sucrose load in normoglycemic rats as well as streptozotocin-induced diabetic rats. which is comparable to the standard antidiabetic drug Glibenclamide for medical care, The present study defines the systematic evaluation and the role of minerals in glycemic potential of aqueous extract of Withania coagulans fruits in order to develop an effective and safe alternative treatment for diabetes mellitus. These studies conducted to determine the antidiabetic effect of Withania coagulans and pancreatic histological features in streptozotocin induced diabetic rat. Results: The study is based on results of lowering in blood glucose levels of normal, sub, mild diabetic rats assessed during fasting blood glucose, glucose tolerance test studies. The dose of 1000mg/kg was identified as the most effective dose, which reduce the blood glucose level maximum by 35.2% at 5 hours in normal rats during blood glucose studies. Glucose tolerance test studies is normal, sub and mild diabetic rats showed the maximum reduction of 16.7, 29.8 and 38.5% at 4hour respectively. Long term study incase of severely diabetic rats showed reduction fasting glucose level respectively after 30 days of treatment. The present study confirming antidiabetic effect of aqueous extract of Withania Coagulans, helps in identifying the role of trace minerals like Mg and Ca responsible for antidiabetic potential of this potent indigenous shrub. Conclusion: The present research has presented comprehensive details of antidiabetic plants used in the treatment of diabetes mellitus. Most of these plant derived medicines. Keywords: Anti-Diabetic effect, Screening & Evaluation, Streptozocin, Glibenclamide, Diabetic rats.


2020 ◽  
Vol 10 (1) ◽  
pp. 61-68 ◽  
Author(s):  
Morad Hebi ◽  
Mohamed Eddouks

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.


2021 ◽  
pp. 105477382110247
Author(s):  
Eda Ergin ◽  
Ayten Zaybak

The purpose of this study is to compare whether or not there is a difference between venous and capillary blood samples in blood glucose measurements and investigate the effects of different aseptic methods used in skin cleaning before collecting blood samples on measurement results. This quasi-experimental study was conducted with 109 patients. The capillary first and second blood drop values taken from the patients after fasting and at 2 hours following 75 g oral glucose tolerance test (OGTT) and capillary and venous blood glucose values were compared. There was no significant difference between the median venous blood glucose value and the capillary second blood drop value taken after wiping the finger with alcohol. There was no significant difference between the first and second blood drop values of capillary blood glucose 2 hours after OGTT.


2017 ◽  
Vol 814 ◽  
pp. 130-137 ◽  
Author(s):  
Rina Enomoto ◽  
Aya Kurosawa ◽  
Yoshiaki Nikaido ◽  
Misaki Mashiko ◽  
Toshihiko Saheki ◽  
...  

2012 ◽  
Vol 19 (04) ◽  
pp. 462-468
Author(s):  
M. IKRAM ◽  
SYED HAIDER HASAN ALAM ◽  
SHAFQAT MUKHTAR ◽  
M. Saeed

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.


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