scholarly journals Study of the oral hypoglycemic activity of Moringaoleifera leaves alone and in combination with Glibenclamide in streptozotocin induced diabetic albino rats

Author(s):  
Sushma V. Naidu ◽  
Suresha R. N. ◽  
Jayanthi M. K. ◽  
Satish A. M. ◽  
Kalabharathi H. L. ◽  
...  

Background: Oringaoleifera is a widely used plant with high medicinal value, well known for its pharmacological actions and is used in various conditions. It has been reported to have many biological properties like anti-inflammatory, antimicrobial, antispasmodic, antitumour including antidiabetic activity.Methods: The study was carried out in Wistar albino rats with body weight 150-250gms. Diabetes was induced by injecting Streptozotocin intraperitoneally- dose 55 mg/kg BW. Animals were divided into 5 groups with 6 animals in each group. First group (Control) was given 2% gum acacia. Other 4 groups were induced diabetes by giving Streptozotocin. Diabetic control group received gum acacia (0.5 ml), Standard group received Glibenclamide (0.5mg/kg BW), Test group received Moringaoleifera extract (300mg/kg) and Test+ Standard group receiving combination of Moringaoleifera and glibenclamide at half the above doses. All drugs were given orally for 28 days and blood glucose levels analyzed using Glucometer on Day 0 before drug and on D1, D3, D7, D14, D21, and D28. Data were statistically analyzed by ANOVA and Tukey‘s Post Hoc test.Results: Hypoglycemia produced by Moringaoleifera extract was significant (p<0.001) when compared to diabetic control group from day 7 to day 28. The percent reduction of blood glucose level was 52.9% as compared to Glibenclamide group 61.3%. The combination group also showed significant hypoglycemic activity the percentage reduction being 56.44%.Conclusions: Thus, Moringaoleifera decreased blood glucose level efficaciously as compared to diabetic control group and similar to standard group at p<0.001.

Author(s):  
Soumya Prakash Rout ◽  
Durga Madhab Kar ◽  
Laxmidhar Maharana

<p>ABSTRACT<br />Context: Several species of the genus Annona were reported to have hypoglycemic properties and this makes Annona reticulata Linn. (Annonaceae)<br />an interesting plant for investigating its anti-hyperglycemic potential.<br />Objective: Different fractions prepared from hydro-alcoholic extract of A. reticulata leave were investigated for their blood glucose lowering effect on<br />Streptozotocin (STZ) induced hyperglycemic rats.<br />Methods: Ethyl acetate, methanol, and residual fractions (at dose level of 100 mg/kg by oral route) prepared from the hydro-alcoholic extract of<br />A. reticulata leave were administered for 14 consecutive days to STZ induced hyperglycemic rats for evaluation of their anti-hyperglycemic potential.<br />Anti-hyperglycemic potential was assessed by observation of a decrease in fasting blood glucose level.<br />Results: The studies revealed that ethyl acetate fraction decreased the blood glucose level of hyperglycemic rats from 447.67 to 234.17 mg/dL and is<br />significant (p&lt;0.001) when compared with diabetic control group. The residual fraction and methanolic fraction decreased blood glucose level from<br />417.83 to 402.50 mg/dL and 432.33 to 371.67 mg/dL respectively but not significant when compared with the diabetic control group. Standard drug<br />metformin (dose 300 mg/kg) reduced the blood glucose level from 447.33 to 219.50 mg/dL.<br />Discussion: Ethyl acetate fraction at tested dose level was capable not only to control the elevated blood glucose level but also able to attenuate<br />certain secondary parameters associated with STZ induced hyperglycemia.<br />Conclusion: This study suggested that the ethyl acetate fraction prepared from hydro-alcoholic extract of A. reticulata leave exhibit potential antihyperglycemic<br />property<br />in the tested<br />experimental<br />models and should be investigated<br />further.<br />Keywords: Streptozotocin, Diabetes, Dyslipidemia.</p>


Author(s):  
Khidir A. M. Hassan ◽  
Mahmoud M. E. Mudawi ◽  
Mansour I. Sulaiman

Metformin is now being recognized as the standard therapy in T2D patients who are overweight. Metformin has many drug-disease interactions that can increase the risk of metformin-associated lactic acidosis. Therefore this study was conducted to evaluate any possible pharmacodynamic interactions between metformin and drugs used to treat chronic diseases e.g. Hypertension. The rats were fasted overnight before inducing diabetes with streptozotocin. The rats were given an intraperitoneal injection of streptozotocin (50 mg kg−1) freshly prepared in 0.1M sodium citrate buffer. The diabetic state was confirmed 72 h after streptozotocin injection. Diabetic rats were grouped into seven groups each group of five rats and distributed among the normal control group diabetic control group and the treatment groups. The treatment continued for 10 days. Blood samples were taken before treatment and after 10 days and analyzed for serum glucose, cholesterol, HDL, LDL, and triglycerides. In the diabetic control group which was given STZ alone the blood glucose level decreased significantly (p &lt; 0.05) after 10 days but still above the hyperglycemic level (200mg/dl). The same was observed in the group treated with metformin. The group treated with nifedipine and aspirin showed significant reduction (p &lt; 0.01) in the glucose level below the hyperglycemic level (200mg/dl). While the groups treated with (Metformin + Nifedipine) and (Metformin +Aspirin) showed highly significant reduction (P&lt;0.001) in blood glucose level. These results conclude that the combination of (metformin +Nifedipine) and the combination of (Metformin + Aspirin) have highly significant hypoglycemic effect. It also showed that Nifedipine has promising role in reducing blood glucose level, lipid profile especially LDL-cholesterol, and body weight.


Author(s):  
Padmaja Shetty K. ◽  
Pushpa V. H.

Background: Diabetes mellitus is a multifactorial metabolic disorder with several microvascular and macrovascular complications. Several plants have been used as dietary adjuvants to conventional drug therapy. Garcinia indica exhibits significant hypolipidemic and hypoglycemic activity. This study was conducted to evaluate the hypoglycemic effects of methanolic extract of seeds of Garcinia indica on blood glucose levels in Streptozotocin induced diabetic albino rats.Methods: Five groups of wistar albino rats (n=6) weighing 150-200g of either sex aged 3-4 months were obtained for the study. After overnight fasting, streptozotocin (50mg/kg) was administered intraperitoneally to induce diabetes. Five groups are: Group-1: Non diabetic control group, Group-2: diabetic control, Group-3: diabetic standard, Group-4: test group, Group-5: half of test + half of standard. Fasting blood sugar was estimated on 1, 3, 7, 14 and 28th day by capillary blood glucose method. The data obtained were subjected to statistical analysis.Results: In this study, following Streptozotocin administration the blood glucose levels increased in all groups on day 0. In group 2, blood glucose level gradually increased to 445.6±1.75mg/dl over a period of 4 weeks. Following glibenclamide administration in Group 3 - there was a gradual reduction in blood glucose levels: 269.8mg/dl - day 7 to 101.8mg/dl - week 4. Group 4 - persistent and significant (p<0.05) fall in blood glucose levels reaching upto 107mg/dl at the end of 4 weeks. Group 5 - 330mg/dl on day 1 which significantly (p<0.05) reduced to 101mg/dl on day 28. There was improvement in weight in group 4 and group 5 diabetic rats.Conclusions: The extract alone and in combination with glibenclamide showed significant hypoglycemic activity in comparison to diabetic control group.


2020 ◽  
Vol 8 (02) ◽  
pp. 35-39
Author(s):  
Laxmi Shrestha ◽  
Amit Shrivastava ◽  
Bishal Joshi ◽  
Buddhi Raj Pokhrel ◽  
Shanti Gurung ◽  
...  

INTRODUCTION Diabetes mellitus is the most common metabolic disease worldwide. Nigella sativa also known as black cumin, is an emerging miracle herb with a rich historical and religious background. In the present study, we have attempted to study the hypoglycemic effect of aqueous extract of Nigella sativa on diabetes-induced rats. MATERIAL AND METHODS This preclinical study was conducted in Department of Pharmacology from August to October 2019. In this study, hyperglycemia was induced by a single intraperitoneal dose of 60 mg/kg streptozotocin in 0.1 M citrate buffer (pH 4.5). Animals were divided into five groups containing normal control, negative control, standard, test-1, and test-2. The aqueous extract of Nigella sativa was administered 400 and 800 mg/kg per oral in both the test groups for 18 days. Blood glucose level was measured at three-days interval by glucometer. Oral glucose tolerance test was done by administrating 2 gm/kg per oral glucose and the blood glucose was recorded every two-hours interval for eight hours. RESULTS An oral glucose tolerance test showed a decrease in blood glucose level at the dose of 400 and 800 mg/kg compared to the negative control group. The administration of aqueous extract of Nigella sativa for 18 days showed significant decrease in blood glucose level (p=0.001) compared to negative control group. The blood glucose level in test 1 (400 mg/kg) was significantly reduced compared to the standard group (p***<0.001). The blood glucose level in test 2 at 18th day was less significant (p*< 0.05) compared with standard group and test 1 (p**<0.01, p***<0.001). CONCLUSION The findings of the present study indicate that the aqueous extract of Nigella sativa has significant hypoglycemic effect in Wistar rats.


Author(s):  
OLUSAYO A SHORINWA ◽  
GORDON EI EMENU

Objectives: This study investigated the antidiabetic and antihyperlipidemic potential of the ethanol extract of the leaves and stem of Cissus gracillis on alloxan monohydrate-induced diabetic albino rats. Methods: Preliminary phytochemical screening and acute toxicity were carried out. Animals were assigned into seven groups of five rats each. Groups A and B were administered 10 mg/kg each of glibenclamide and atorvastatin respectively, C, D, and E were given 125, 250 and 500 mg/kg of ethanol extract of C. gracillis, respectively, daily for 21 days through oral gavage, group F was diabetic but untreated (diabetic control group), while group G was non-diabetic and untreated which served as the control group. Results: Phytochemical screening revealed the presence of steroids/triterpenoids and carbohydrates. LD50 was above 5000 mg/kg. The extract at 500 mg/kg showed a statistically significant (p<0.05) decrease in blood glucose level when compared with the glibenclamide group on day 21. However, gradual non- significant reduction in blood glucose levels were observed in the extract treated groups on the 7th, 14th, and 21st days of treatment. The administration of ethanol extract of C. gracillis to alloxan-induced diabetic rats produced a decrease in total cholesterol, triglycerides, and low-density lipoproteins comparable to glibenclamide and atorvastatin. Conclusion: The ethanol extract of the leaves and stem of C. gracillis possess a mildly significant antidiabetic and antihyperlipidemic activity.


Ethno pharmacological relevance: Traditionally different parts of Jasminum grandiflorum have been used to treat various ailments, including diabetes. However, antidiabetic potential of Jasminum grandiflorum on animal models of diabetes have not been evaluated. Aim of the study: The objective of this study was to determine antidiabetic potential of ethanol extract of leaves and flowers of Jasminum grandiflorum, and different fractions of the flower extract in rodent model of streptozotocin-induced diabetes. Materials and methods: Ethanol extract of both leaves and flowers of Jasminum grandiflorum were screened for the presence of various phytochemicals followed by acute and sub-acute toxicity in rats. Effect of Jasminum grandiflorum leaf and flower extracts on blood glucose level in normal albino rats, in glucose-overloaded healthy albino rats, and in streptozotocininduced diabetic rats was evaluated. Furthermore, based on preliminary results, fractionalization of the flower extract was carried out using petroleum ether, ethyl acetate, methanol, and chloroform. Different fractions were further tested for hypoglycemic activity in streptozotocin-induced diabetic rats. Results: Preliminary phytochemical evaluation suggested presence of various antidiabetic metabolites in both the extracts and were found to safe up to 5000 mg/kg dose. Flower extract (500 mg/kg, p.o.) demonstrated significant hypoglycemic effect than leaf extract (500 mg/kg, p.o.) in normal rats, glucose-overloaded rats, and streptozotocin-induced diabetic rats when compared to control. Long-term effect of different fractions of ethanol extract of Jasminum grandiflorum flowers in streptozotocin model suggested that all four fractions were able to reduce blood glucose level in a time-dependent manner at 200 mg/kg dose with chloroform fraction being highly significant (p<0.001) amongst all when compared to diabetic untreated rats. Chloroform isolate from Jasminum grandiflorum flowers demonstrated enhanced glucose uptake and dosedependent cytotoxicity in L6 cell line. Conclusion: The ethanol extract of Jasminum grandiflorum flowers as well as its various fractions have potential therapeutic value in treating diabetes, which may be due to the presence of various antidiabetic metabolites, by enhancing insulin secretion and antioxidant defense. These observations rationalize its use as ethnomedicine and hence can be considered in treating diabetes.


Author(s):  
Talha Jawaid ◽  
Kumari Nishu ◽  
Mehnaz Kamal ◽  
Saud M. Alsanad

Aim: The current study observed the antidiabetic effect of Vasant Kusumakar Ras, an Ayurvedic polyherbal formulation, in alloxan-induced and dexamethasone-induced diabetic rats. Materials and Methods: Alloxan (120 mg/kg, i.p.) and dexamethasone sodium phosphate (5 mg/kg, i.p.) were used to induce diabetes in rats. The oral antidiabetic activity of Vasant Kusumakar Ras was evaluated by single doses of Vasant Kusumakar Ras (400 and 600 mg/kg, p.o.) in albino rats during a 10-day treatment period, with the effect of the Vasant Kusumakar Ras on blood glucose levels and serum lipid parameters measured on 0, 7th, and 11th day. Glibenclamide (5 mg/kg, p.o.) was used as the reference drug. Results: In alloxan-induced diabetic rats, the elevated levels of blood glucose significantly (p < 0.05) decreased after oral administration of Vasant Kusumakar Ras (400 mg/kg and 600 mg/kg), and Glibenclamide (5 mg/kg). When compared to the diabetic control group, treatment with Vasant Kusumakar Ras and Glibenclamide for 10 days reduced total cholesterol (TC) significantly (p < 0.001). Treatment with Vasant Kusumakar Ras and Glibenclamide for 10 days, significantly (p < 0.001) decreased low-density lipoprotein (LDL) level when compared to the diabetic control group. In dexamethasone-induced diabetic rats, all rats given with dexamethasone and Vasant Kusumakar Ras (400 mg/kg and 600 mg/kg) showed a significant (p < 0.05) decrease in the level of blood glucose when compared with diabetic control rats. The rats treated with dexamethasone and Glibenclamide showed a significant (p < 0.05) decrease in blood glucose level when compared to diabetic control rats. When compared to the diabetic control group, treatment with Vasant Kusumakar Ras and Glibenclamide (5 mg/kg) for 10 days reduced TC significantly (p < 0.001). Treatment with Vasant Kusumakar Ras and Glibenclamide for 10 days, significantly (p < 0.001) decreased LDL level when compared to the diabetic control group. Conclusion: Vasant Kusumakar Ras was shown to have significant antidiabetic activity comparable to that of glibenclamide and it also improves the lipid metabolism in both alloxan-induced and dexamethasone-induced diabetic rats.


2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Pradeep Kumar Bhateja ◽  
Randhir Singh

The present study was designed to investigate the antidiabetic activity of aqueous extract ofAcacia tortilispolysaccharide (AEATP) from gum exudates and its role in comorbidities associated with diabetes in STZ-nicotinamide induced diabetic rats. Male albino Wistar rats were divided into control, diabetic control, glimepiride treated (10 mg/kg), and diabetic rats treated with 250, 500, and 1000 mg/kg dose of AEATP groups and fasting blood glucose, glycated hemoglobin, total cholesterol, triglyceride, LDL, VLDL, HDL, SGOT, and SGPT levels were measured. STZ significantly increased fasting blood glucose level, glycated hemoglobin, total cholesterol, triglyceride, LDL, VLDL, SGOT, and SGPT levels, whereas HDL level was reduced as compared to control group. After 7 days of administration, 500 and 1000 mg/kg dose of AEATP showed significant reduction(P<0.05)in fasting blood glucose level compared to diabetic control. AEATP has also reduced total cholesterol, triglyceride, LDL, VLDL, SGOT, and SGPT levels and improved HDL level as compared to diabetic control group. Our study is the first to report the normalization of fasting blood glucose level, lipid profile, and liver enzyme in AEATP treated diabetic rats. Thus, it can be concluded that AEATP may have potentials for the treatment of T2DM and its comorbidities.


Author(s):  
Khulood Saadoon Salim

In recent years,green tea and ginger have become a subject of interest because of their beneficial effects on human health. The aim of the present study was to compare the effect of long term administration of green tea and ginger each alone to the effect of their combination on blood glucose level in streptozotocin-induced diabetic rats. Method: A group of 50 male albino rats was divided into five groups (10 rats each group). The normal control group( NC) administered tap water, other animals were injected by streptozotocin 45mg/Kg body weight intraperitonially to induce diabetes mellitus and then divided into four groups ,diabetic control (DC) without treatment, diabetic group administered green tea extract for four weeks (DGT), diabetic group administered ginger extract for four weeks(DGI), and diabetic group administered mixture of green tea and ginger for four weeks (DGG), then we compare the blood glucose level at 1st,2nd,3rd, and 4th week of experiment. Results:We observed that in groups whose water drink was substituted by green tea and ginger extract, the blood glucose level was significantly( p less than 0.05) reduced as compared to diabetic animals. Importantly, we observed that blood glucose level was near control level when green tea was administered simultaneously with ginger extract.Conclusion: Combination of green tea and ginger may be of great value as hypoglycemic agent in diabetic patients, the synergism of their effect on glucose regulation process is underlying this results.


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