@article {1095, title = {Effect of Some Naturally Occurring Monoterpenes viz d-Limonene, p-Cymene and Terpinolene on the Glycemic and Hepatic Function in a Rat Model of Type 2 Diabetes Mellitus}, journal = {Pharmacognosy Research}, volume = {14}, year = {2022}, month = {October 2022}, pages = {446-453}, type = {Original Article}, chapter = {446}, abstract = {

Background: Diabetes mellitus is an increasingly serious health problem in society with type 2 diabetes the most common type of diabetes. Objectives: Our main aim was to test the efficacy of some naturally occurring pure monoterpenes viz d-limonene, p-cymene, terpinolene in modulating glycemic and hepatic function. Materials and Methods: Rats were given soybean oil (as source of fat) for 28 days once daily per os and a single dose of 35mg/ kg streptozotocin i.p. at the end for diabetes induction. Post diabetes detection, animals were treated with d-limonene 300mg/kg, p-cymene (150mg/kg and 200mg/kg), terpinolene (12.5mg/kg and 25 mg/kg) and standard anti-diabetic drug glibenclamide (5mg/kg) once daily orally for a period of another 28 days. At the end of the experimental period, blood glucose, serum levels of insulin, HbA1c, ALP, ALT, AST, GGT, total protein and albumin were determined. Liver was isolated for histopathology. Results: Biochemical profile revealed that d-limonene, p-cymene, and terpinolene significantly restored blood glucose, serum insulin, glycated hemoglobin, ALP, ALT, AST, GGT, albumin and total protein. However, d-limonene (300mg/kg) and terpinolene (25mg/kg) exhibited more pronounced activity than p-cymene (150mg/kg). Histopathology of diabetic group revealed binucleated cells, degeneration of parenchyma, clear cell foci, granular cytoplasm, prominent nucleoli and darkly stained nucleolus while d-limonene, p-cymene and terpinolene treated groups were successful in slowing down the progression of pathology associated with hepatic architecture. Conclusion: D-limonene, p-cymene and terpinolene have the potential to control parameters related to glycemia. Because of the fact that type 2 diabetics are at risk of several liver pathologies, d-limonene, p-cymene and terpinolene exhibited hepatoprotective activity also.

}, keywords = {Diabetes, Histopathology, Liver, Rats, Streptozotocin}, doi = {10.5530/pres.14.4.65}, author = {Sheeba Shakeel and Nahida Tabassum} } @article {155, title = {Antidiabetic and Antidyslipidemic Activities of Hexane/Ethyl Acetate/Methanol Fractions of Paspalum scrobiculatum Linn. Grains in High-Fat Diet and Streptozotocin-Induced Diabetic Rats}, journal = {Pharmacognosy Research}, volume = {12}, year = {2020}, month = {August 2020}, pages = {230-235}, type = {Original Article}, chapter = {230}, abstract = {

Background: Dietary habits and sedentary lifestyle are the major causes of increasing obesity, which in turn causes diabetes and cardiovascular problems. With this alarming increase, there is a need for alternative therapies to treat diabetes and hyperlipidemia. Objectives: To evaluate antidiabetic and antidyslipidemic effects of fractions of Paspalum scrobiculatum grains in rats. Materials and Methods: Different doses of Hexane: Ethyl acetate fraction of P. scrobiculatum (HEPS) and Ethyl acetate: Methanol fraction of P. scrobiculatum (EMPS) fractions of P. scrobiculatum were administered to the high-fat diet (HFD) and streptozotocin (STZ) (35 mg/ kg)-induced diabetic rats with glibenclamide at 20 mg/kg body weight (b.w) as a standard reference. Biochemical and histopathological changes were assessed after 5 weeks of treatment. Results: Daily oral treatment with HEPS and EMPS each at 100 and 200 mg/kg b.w for 5 weeks was found to be significant in the reduction of plasma glucose levels, HbA1c, increased plasma insulin levels, and normalized lipid profile and liver function parameters in HFD and STZ-induced diabetic rats. In addition, degenerative histopathological changes seen in liver, kidney, and pancreas of diabetic rats were found to be normalized in HEPS and EMPS as comparable to that of glibenclamide-treated rats. Conclusion: The obtained results suggest that HEPS and EMPS fractions of P. scrobiculatum grains possess promising antihyperglycemic and antidyslipidemic potential without apparent toxic effects, which may prove the claimed use of the plant in treatment of diabetes and dyslipidemia.

}, keywords = {Antidiabetic, Antidyslipidemic, High-fat diet, Paspalum scrobiculatum, Streptozotocin}, doi = {10.4103/pr.pr_6_20}, author = {G Jyothi Reddy and K Bhaskar Reddy and G V Subba Reddy} } @article {103, title = {Alpha Glucosidase Inhibiting Activity and in vivo Antidiabetic Activity of Fraxinus floribunda Bark in Streptozotocin-Induced Diabetic Rats}, journal = {Pharmacognosy Research}, volume = {11}, year = {2019}, month = {August 2019}, pages = {273-278}, type = {Original Article}, chapter = {273}, abstract = {

Background: Diabetes mellitus is a serious health problem being the third largest cause of death worldwide. Natural sources of antidiabetic agents are of high demand due to side effects of modern drugs. Bark of Fraxinus floribunda (FF) is conventionally used in Sikkim to treat diabetes, but there is not a single documented report on the same. Objective: The aim of this study is to evaluate in vitro and in vivo antidiabetic activity of FF bark. Materials and Methods: FF bark was extracted through four methods, namely normal boiling, pressure boiling (PB), soxhlet, and cold percolation to be subjected to α-glucosidase inhibiting assay. The extract showing the highest in vitro antidiabetic activity was selected for in vivo antidiabetic activity. Results: Extract from PB showed the highest antidiabetic activity (10.25 {\textpm} 4.56 mg/ml FWT); thus, it was selected for antidiabetic property in animal model. The extracts (200 and 400 mg/kg) significantly (P \< 0.05) reduced plasma glucose concentration in streptozotocin-induced diabetic rats. Glibenclamide (0.50 mg/kg) was used as standard. Decrease in bodyweight during diabetes was significantly controlled by the extract which was comparable with the standard at the same concentration. Changes in lipid profile (total cholesterol, triglycerides, high-density lipoprotein, and low-density lipoprotein) of the diabetic rats were also maintained almost to the level of normal rats by the extracts. Histopathology of liver sections of diabetic rats showed damage in the hepatic architecture (swelling of sinusoids, vacuolization of cytoplasm, and inflammation of the central vein) which was controlled by the extracts. Conclusion: This study agrees with the traditional use of FF bark as an antidiabetic agent.

}, keywords = {Antidiabetic, Fraxinus floribunda, Lipid profile, Liver histopathology, Streptozotocin, α-glucosidase.}, doi = {10.4103/pr.pr_32_19}, author = {Arunika Subba and Ram Kumar Sahu and Shiv Bhardwaj and Palash Mandal} } @article {313, title = {Antioxidant and Antidiabetic Activities of Methanolic Extract of Cinnamomum Cassia}, journal = {Pharmacognosy Research}, volume = {10}, year = {2018}, month = {July 2018}, pages = {237-242}, type = {Original Article}, chapter = {237}, abstract = {

Background: Cinnamomum cassia or Chinese cinnamon is one of the fundamental herbs in traditional Chinese medicine. C. cassia is used as astringent, antiseptic, and used for the treatment of metabolic disorders. The antioxidant and antidiabetic effects of its extracts are unclear. Hence, the present study is planned to investigate the antioxidant and antidiabetic effects of methanolic extracts barks of C. cassia. Materials and Methods: Bark of C. cassia was extracted with methanol, ethanol, and acetone and its antioxidant activity was studied using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) free radical scavenging assays. Acute toxic effect of methanolic extract of C. cassia (MECC) carried out as Organisation for Economic Co-operation and Development guidelines. MECC was studied for its antidiabetic effect using streptozotocin (STZ)-induced diabetic rats. Results: In both DPPH and ABTS free radical scavenging assay, methanolic and ethanolic extracts exhibited free radical scavenging activity. In acute toxicity testing, MECC did not show any significant toxic signs up to 2000 mg/kg, hence the antidiabetic activity of MECC was carried out at the dose levels of 125, 250, and 500 mg/kg. MECC showed antidiabetic activity from 2nd week of the experiment onward. At the end of the study, diabetic animals showed significant increases in the levels of total cholesterol (TC), very-low-density lipoprotein, and TC/high-density lipoprotein radio compare with that of normal control and MECC prevented the STZ-induced hyperlipidemia. In the histopathological analysis, sections from the liver, pancreas, and kidney of the diabetic animals and the animals treated with MECC 500 mg/kg showed mid-to-moderate toxic effects. Conclusion: The MECC exhibited significant antioxidant and antidiabetic activities.

}, keywords = {Cinnamomum cassia, Diabetes, Sprague-Dawley rats, Streptozotocin}, doi = {10.4103/pr.pr_162_17}, author = {Jasvin Singh and Subramani Parasuraman and Sathasivam Kathiresan} } @article {290, title = {Evaluation of Protective Effects of Hydroalcoholic Extract of Cassia fistula Linn. Pod on Pancreas in Streptozotocin-induced Diabetic Rats}, journal = {Pharmacognosy Research}, volume = {10}, year = {2018}, month = {April 2018}, pages = {212}, type = {Original Article}, chapter = {205}, abstract = {

Background: Diabetes mellitus (DM) is associated with oxidative stress. Medicinal plants and herbs are the rich sources of antioxidants which ameliorate oxidative stress-induced diabetic complications and could play an important role in the management of diabetes. Objective: The present study aimed to evaluate the protective effects of 70\% ethanolic extract of Cassia fistula pod on pancreas in streptozotocin (STZ)-induced diabetic rats. Materials and Methods: Diabetes was induced in male Wistar rats by single intraperitoneal injection of STZ (60 mg/kg b.wt.). The diabetic rats were administered orally with C. fistula pod extract at three different doses (100, 250, and 500 mg/kg b.wt./day) for 60 days. The results were compared with standard drug glibenclamide (5 mg/kg b.wt./ day) treated rats. Relative pancreatic weight and serum insulin level were determined. Histopathological changes and oxidative stress parameters, i.e., lipid peroxidation (thiobarbituric acid reactive substance [TBARS]) and antioxidative defense markers (superoxide dismutase, catalase, glutathione, and ascorbic acid), in the pancreas were investigated. Results: Oral administration of C. fistula pod extract (100, 250, and 500 mg/kg b.wt./day) or glibenclamide in diabetic rats significantly improved serum insulin level, total protein concentration, relative pancreatic weight, and mean diameter of islets of Langerhans as compared to diabetic control rats. Furthermore, treatment with extract also reduced TBARS levels and improved the levels of antioxidant markers in the pancreas. The histomorphological picture of the pancreas showed marked restoration of islets morphology. These results were comparable with glibenclamide. Conclusions: The results of the present study showed that C. fistula pod extract possesses significant antidiabetic activity though enhanced insulin secretion, improvement of antioxidative status of pancreas, and preservation of the integrity of pancreatic islets.

}, keywords = {Antioxidants, Cassia fistula, Insulin, Pancreas, Streptozotocin}, doi = {10.4103/pr.pr_95_17}, author = {Ram Niwas Jangir and Gyan Chand Jain} } @article {283, title = {Antidiabetic Effects of Aqueous and Dichloromethane/Methanol Stem Bark Extracts of Pterocarpus soyauxii Taub (Papilionaceae) on Streptozotocin-induced Diabetic Rats}, journal = {Pharmacognosy Research}, volume = {9}, year = {2017}, month = {February 2017}, pages = {80-86}, type = {Original Article}, chapter = {80}, abstract = {

Aim of the Study: The aim is to evaluate the hypoglycemic and antidiabetic effects of aqueous and CH2Cl2/CH3OH stem bark extracts of Pterocarpus soyauxii Taub in normal and diabetic rats. Materials and Methods: Streptozotocin (STZ)-induced diabetic and normal adult Wistar rats were orally administered with aqueous and CH2Cl2/CH3OH plant extracts of P. soyauxii at various doses (38{\textendash}300 mg/kg) in a single administration. In addition, STZ-induced diabetic rats received prolonged daily administration for 14 days. Glibenclamide (GB) (10 mg/kg) was used as reference treatment. In acute test, fasting blood glucose was followed for 5 h. In subacute test, body weight, food and water intakes, and blood glucose were followed weekly and serum biochemical parameters evaluated after 14 days treatment. Results: Acute administration of aqueous and CH2Cl2/ CH3OH stem bark extracts moderately decreased fasting blood glucose compared to GB, significantly in normal rats (P \< 0.05 to P \< 0.01) but, as GB, not significantly in diabetic rats. Prolonged treatments in diabetic rats with aqueous and CH2Cl2/CH3OH extracts reduced blood glucose to an extent, respectively, superior or similar to GB. Moreover, P. soyauxii also significantly (P \< 0.01) reduced weight loss, and diabetes increased serum triglycerides, total cholesterol, and transaminases (alanine aminotransferase/ aspartate aminotransferase) elevations. Conclusion: P. soyauxii Taub stem bark extracts have possible value for antidiabetic oral medication.

}, keywords = {Antihyperglycemic, Diabetes mellitus, Phytotherapy, Pterocarpus soyauxii Taub, Rats, Streptozotocin}, doi = {10.4103/0974-8490.199767}, author = {Marie Claire Tchamadeu and Paul D{\'e}sir{\'e} Djomeni Dzeufiet and Nelly Blaes and Jean-Pierre Girolami and Pierre Kamtchouing and Th{\'e}ophile Dimo} } @article {357, title = {Hepatoprotective, Antihyperlipidemic, and Anti-inflammatory Activity of Moringa oleifera in Diabetic-induced Damage in Male Wistar Rats}, journal = {Pharmacognosy Research}, volume = {9}, year = {2017}, month = {April 2017}, pages = {182-187}, type = {Original Article}, chapter = {182}, abstract = {

Background: The number of individuals with diabetes is increasing daily, and diabetes is presently estimated to affect about 422 million adults worldwide. Conventional drugs used to treat diabetes are not without severe side effects, accessibility, and affordability. This study elucidates the potential effects of Moringa oleifera (MO) leaves extract to manage and treat diabetes induced in male Wistar rats. Materials and Methods: Adult male Wistar rats were randomly divided into four groups (n = 12/group): NC {\textendash} nondiabetic rats (positive control), MO {\textendash} nondiabetic-treated rats, DM {\textendash} diabetic rats (negative control), DM + MO {\textendash} diabetic-treated rats. Hepatic enzymes and biochemical parameters as well as antioxidant capacity and inflammatory cytokine levels were assessed. Levels of low-density lipoprotein, high-density lipoprotein, and total cholesterol were evaluated. Results: Oral administration of methanolic extract of MO (250 mg/kg) to diabetic rats for 42 days showed a significant reduction in hepatic enzyme markers and normalized lipid profile parameters in the serum compared to normal control group. Treatment also increased the level of antioxidant capacity and alleviated inflammatory biomarkers of the liver. Histology sections of the liver tissue showed protective effect of MO in treated rats. Conclusions: MO showed hepatoprotective, anti-inflammatory, and lipid-lowering effects against streptozotocin-induced hepatotoxicity. Histological section demonstrated specific alterations in the liver of the diabetic and nondiabetic male Wistar rats while MO treatment revealed improvement in liver alterations.

}, keywords = {Diabetes, Hepatic enzymes, Inflammatory cytokines, Lipid profile, Moringa oleifera, Streptozotocin}, doi = {10.4103/0974-8490.204651}, author = {Elizabeth I Omodanisi and Yapo G Aboua and Novel N Chegou and Oluwafemi O Oguntibeju} } @article {557, title = {Improvement of Insulin Secretion and Pancreatic β-cell Function in Streptozotocin-induced Diabetic Rats Treated with Aloe vera Extract}, journal = {Pharmacognosy Research}, volume = {9}, year = {2017}, month = {December 2017}, pages = {s99-s104}, type = {Original Article}, chapter = {s99}, abstract = {

Background: Diabetes mellitus is a metabolic disorder characterized by chronic hyperglycemia. Plant extracts and their products are being used as an alternative system of medicine for the treatment of diabetes. Aloe vera has been traditionally used to treat several diseases and it exhibits antioxidant, anti-inflammatory, and wound-healing effects. Streptozotocin (STZ)-induced Wistar diabetic rats were used in this study to understand the potential protective effect of A. vera extract on the pancreatic islets. Objective: The aim of the present study was to evaluate the A. vera extract on improvement of insulin secretion and pancreatic β-cell function by morphometric analysis of pancreatic islets in STZ-induced diabetic Wistar rats. Materials and Methods: After acclimatization, male Wistar rats, maintained as per the Committee for the Purpose of Control and Supervision of Experiments on Animals guidelines, were randomly divided into four groups of six rats each. Fasting plasma glucose and insulin levels were assessed. The effect of A. vera extract in STZ-induced diabetic rats on the pancreatic islets by morphometric analysis was evaluated. Results: Oral administration of A. vera extract (300 mg/kg) daily to diabetic rats for 3 weeks showed restoration of blood glucose levels to normal levels with a concomitant increase in insulin levels upon feeding with A. vera extract in STZ-induced diabetic rats. Morphometric analysis of pancreatic sections revealed quantitative and qualitative gain in terms of number, diameter, volume, and area of the pancreatic islets of diabetic rats treated with A. vera extract when compared to the untreated diabetic rats. Conclusion: A. vera extract exerts antidiabetic effects by improving insulin secretion and pancreatic β-cell function by restoring pancreatic islet mass in STZ-induced diabetic Wistar rats.

}, keywords = {Aloe vera, Diabetes, Insulin, Morphometric analysis, Pancreas, Streptozotocin}, doi = {10.4103/pr.pr_75_17}, author = {Ayesha Noor and S Gunasekaran and MA Vijayalakshmi} } @article {412, title = {Quantification of Quercetin Obtained from Allium cepa Lam. Leaves and its Effects on Streptozotocin-induced Diabetic Neuropathy}, journal = {Pharmacognosy Research}, volume = {9}, year = {2017}, month = {July 2017}, pages = {287-293}, type = {Original Article}, chapter = {287}, abstract = {

Objective: Antioxidant potential has protective effects in diabetic neuropathy (DN); hence, the present study was designed with an objective to quantify quercetin from shade-dried leaves of Allium cepa Lam. and to study its effects on streptozotocin (STZ)-induced chronic DN. Materials and Methods: The shade-dried leaves of A. cepa Lam. were extracted with methanol and then fractionated using ethyl acetate (ACEA). The quantification of quercetin in ACEA was evaluated by high-performance thin layer chromatography (HPTLC). The STZ (40 mg/kg) was administered to Sprague-Dawley rats (180{\textendash}250 g) maintained at normal housing conditions. The STZ was administered once a day for 3 consecutive days. The elevation in blood glucose was monitored for 3 weeks periodically using flavin adenine dinucleotide-glucose dehydrogenase method by Contour TS glucometer. Rats showing blood glucose above 250 mg/dl were selected for the study. Animals were divided into eight groups. ACEA (25, 50, and 100 mg/kg), quercetin (40 mg/kg), metformin (120 mg/kg), and gabapentin (100 mg/kg) were given orally once a day for 2 weeks. The blood glucose level was again measured at the end of treatment to assess DN. Thermal hyperalgesia, cold allodynia, motor incoordination, and neurotoxicity were studied initially and at the end of 2-week treatment. Biochemical parameters were also evaluated after 2-week drug treatment. Results: The quercetin present in ACEA was 4.82\% by HPTLC. All the ACEA treatment reduces blood glucose level at the end of the 2-week study and shows a significant neuroprotective effect in STZ-induced DN in the above experimental models. Conclusion: The quercetin present in ACEA proved protective effect in STZ-induced DN.

}, keywords = {Allium cepa, Diabetic neuropathy, High-performance thin layer chromatography, Streptozotocin}, doi = {10.4103/pr.pr_147_16}, author = {Khan Dureshahwar and Mohammed Mubashir and Hemant Devidas Une} } @article {684, title = {Antihyperglycemic and Antioxidative Effects of the Hydro-methanolic Extract of the Seeds of Caesalpinia Bonduc on Streptozotocin-induced Diabetes in Male Albino Rats}, journal = {Pharmacognosy Research}, volume = {4}, year = {2012}, month = {december,2011}, pages = {57-62}, type = {Original Article}, chapter = {57}, abstract = {

Background: No satisfactory effective treatment is available yet to cure diabetes mellitus. Though, synthetic drugs are used but there are several drawbacks. The attributed antihyperglycemic effects of many traditional plants are due to their ability for the management of diabetes mellitus. Materials and Methods: A hydromethanolic extract was administered orally at a dose of 250 mg/kg of body weight per day for 21 days. Its effects on the fasting blood glucose (FBG) level, activities of key carbohydrate metabolic enzymes like hexokinase, glucose-6-phosphatase, and glucose-6-phosphate dehydrogenase, and antioxidant enzymes like catalase and superoxide dismutase along with the effect on the lipid peroxidation level in hepatic tissues were measured. Glycogen levels were also assessed in hepatic and skeletal muscles and some toxicity parameters, such as serum glutamate oxaloacetate transaminase, glutamate pyruvate transaminase, and alkaline phosphates activities were measured. Results: Treatment of the hydromethanolic extract of the seeds of Caesalpinia bonduc resulted in a significant (P \< 0.05) recovery in the activities of carbohydrate metabolic enzymes along with correction in FBG and glycogen levels as compared with the untreated diabetic group. The extract also resulted in a significant (P \< 0.05) recovery in the activities of toxicity assessment enzyme parameters. Activities of antioxidant enzymes like catalase and superoxide dismutase along with the lipid peroxidation levels were also recovered significantly (P \< 0.05) after the treatment of the extract. The corrective effects produced by the extract were compared with the standard antidiabetic drug, glibenclamide. Conclusion: Our findings provide that the extract shows possible antihyperglycemic and antioxidative activities.

}, keywords = {Antihyperglycemic, Antioxidative, C. bonduc, Streptozotocin}, doi = {10.4103/0974-8490.91044}, author = {Kishalay Jana and Kausik Chatterjee and Kazi Monjur Ali and Debasis De and Tushar Kanti Bera and Debidas Ghosh} } @article {680, title = {Effect of Butea Monosperma Lam. Leaves and Bark Extracts on Blood Glucose in Streptozotocin-induced Severely Diabetic Rats}, journal = {Pharmacognosy Research}, volume = {4}, year = {2012}, month = {december,2011}, pages = {33-36}, type = {Original Article}, chapter = {33}, abstract = {

Background: Diabetes mellitus is a chronic metabolic disorder that has significant impact on the health, quality of life and life expectancy, as well as on the health care system. Butea monosperma Lam. Kuntze (Fabaceae), commonly known as palash, is widely used in the treatment of various diseases and disorders including diabetes. Materials and Methods: The present study was planned to evaluate the antidiabetic effect of aqueous extracts of B. monosperma leaves and bark in streptozotocin-induced severely diabetic rats. The animals were divided into four groups, with each consisting of six rats, viz. control, diabetic control, leaf extract-treated and bark extract-treated groups. Treatment was continued for 6 weeks. The biochemical estimations included blood glucose and serum insulin levels. Histopathology of pancreas was also performed. Results: The results indicated that both leaf and bark extracts of B. monosperma produced insignificant antihyperglycemic activity. The leaf and bark extracts reduced blood glucose to an extent of 28\% and 11\%, respectively. It was also evidenced that both leaf and bark extracts did not increase insulin synthesis or secretion and did not improve pancreatic architecture as reflected by the histopathologic studies. Conclusions: The findings of the study emphasize that B. monosperma does not possess significant antidiabetic activity in severe experimental diabetes at the dosage tested.

}, keywords = {Butea monosperma, Diabetes, Insulin, Pancreas, Streptozotocin}, doi = {10.4103/0974-8490.91032}, author = {Faiyaz Ahmed and NS Siddaraju and M Harish, Asna Urooj and Asna Urooj} } @article {882, title = {Cardioprotective Effects of Gallic Acid in Diabetesinduced Myocardial Dysfunction in Rats}, journal = {Pharmacognosy Research}, volume = {3}, year = {2011}, month = {November,2011}, pages = {239-245}, type = {Original Article}, chapter = {239}, abstract = {

Background: Normalization of hyperglycemia, hyperlipidemia, and oxidative stress is an important objective in preventing diabetes-induced cardiac dysfunction. Objective: This study was undertaken to examine the effects of gallic acid in myocardial dysfunctions associated with type-1 diabetes. Materials and Methods: Diabetes was induced by single intravenous injection of streptozotocin (STZ, 50 mg/kg i.v.). Gallic acid was administered daily at three different doses (100, 50, and 25 mg/kg p.o.) for 8 weeks at the end of which blood samples were collected and analyzed for various biochemical parameters. Results: Injection of STZ produced significant loss of body weight (BW), polyphagia, polydypsia, hyperglycemia, hypoinsulinemia, hyperlipidemia, hypertension, bradycardia, and myocardial functional alterations. Treatment with gallic acid significantly lowered fasting glucose, the AUCglucose level in a dose-dependent manner; however, the insulin level was not increased significantly at same the dose and prevented loss of BW, polyphagia, and polydypsia in diabetic rats. It also prevented STZ-induced hyperlipidemia, hypertension, bradycardia, structural alterations in cardiac tissue such as increase in force of contraction, left ventricular weight to body weight ratio, collagen content, protein content, serum lactate dehydrogenase, and creatinine kinase levels in a dose-dependent manner. Further, treatment also produced reduction in lipid peroxidation and increase in antioxidant parameters in heart of diabetic rats. Conclusion: The results of this study suggest that gallic acid to be beneficial for the treatment of myocardial damage associated with type-1 diabetes.

}, keywords = {Antidiabetic, Antihyperlipidemic, Emblica officinalis, Left ventricular hypertrophy, Myocardial dysfunction, Oxidative stress, Streptozotocin}, doi = {10.4103/0974-8490.89743}, author = {Snehal S. Patel and Ramesh K. Goyal} } @article {751, title = {Effect of Dragon Fruit Extract on Oxidative Stress and Aortic Stiffness in Streptozotocin-induced Diabetes in Rats}, journal = {Pharmacognosy Research}, volume = {2}, year = {2010}, month = {March 2010}, pages = {31-35}, type = {Original Article}, chapter = {31}, abstract = {

Cardiovascular complications are consistently observed in diabetic patients across all age groups. The objective of the present study was to investigate the effect of aqueous extract of the fruit pulp of Hylocereus undatus (DFE) on aortic stiffness and oxidative stress in streptozotocin (STZ)-induced diabetes in rats. Twenty-four male, Sprague-Dawley rats were randomized into four groups: I (control), II (diabetic), III (DFE, 250 mg/kg) and IV (DFE 500 mg/kg). Diabetes was induced in groups II, III and IV by intraperitoneal (i.p.) injection of STZ (40 mg/kg). After confirmation of diabetes, group III and IV received DFE for 5 weeks. Pulse wave velocity (PWV) was used as a marker of aortic stiffness and was determined at the end of 5 weeks. DFE significantly decreased ( P \< 0.05) the fasting blood glucose levels in diabetic rats, but not to normal levels. Systolic blood pressure, pulse pressure and PWV were significantly increased ( P \< 0.05) in diabetic rats at the end of 5 weeks in comparison with control group. DFE treatment significantly decreased ( P \< 0.05) these elevations. Oxidative damage was observed in group II after 5 weeks. Plasma malondialdehyde levels significantly decreased ( P \< 0.05), while superoxide dismutase and total antioxidant capacity significantly increased ( P \< 0.05) with DFE treatment in comparison with group II. These data demonstrate that DFE treatment was effective in controlling oxidative damage and decreasing the aortic stiffness measured by PWV in STZ-induced diabetes in rats.

}, keywords = {Arterial stiffness, Diabetes, Hylocereus undatus, Pulse wave velocity, Streptozotocin}, doi = {10.4103/0974-8490.60582}, author = {Kolla R L Anand Swarup and Munavvar A Sattar and Nor A Abdullah and Mohammed H Abdulla and Ibrahim M Salman and Hassaan A Rathore and Edward J Johns} } @article {903, title = {Antihyperglycemic and Antioxidant Activities of Active Fraction from the Aqueous Extract of Momordica cymbalaria fruits in Streptozotocin Induced Diabetic Rats}, journal = {Pharmacognosy Research}, volume = {1}, year = {2009}, month = {January 2010 }, pages = {352-358}, type = {Original Article}, chapter = {352}, abstract = {

The methanolic supernatant fraction (MSF) of the aqueous extract of Momordica cymbalaria fruits when given to streptozotocin (STZ) induced diabetic rats showed a significant reduction (65.9\%, P\<0.001) in fasting blood glucose levels at a dose of 0.5g/kg.b.w. These results were compared to that of glibenclamide, an oral hypoglycemic agent. The active MSF exhibited a dose dependent scavenging activity against 2, 2-diphenly-1-picrylhydrazyl (DPPH) radicals and nitric oxide radicals with an IC50 value of 42.5 and 157.2μg/ml, respectively. Further, the MSF had relatively lower reducing power, compared to that of ascorbic acid. The total phenolic content of the fraction was found to be 132mg/gm of dry fraction. In conclusion, MSF possess antihyperglycemic and antioxidant properties, which could be due to the presence of steroidal glycosides or phenolic compounds.

}, keywords = {Antihyperglycemic, Antioxidant, Diabetes mellitus, Momordica cymbalaria, Streptozotocin}, doi = {Nil}, author = {Rajasekhar M.D and Ramesh Babu K and Vinay K and Sampath M.R and Sameena S.K and Apparao Ch} } @article {876, title = {Effect of Hydroalcoholic Extract of Chlorophytum borivilianum Tubers in Alleviating the Diabetic Impotency in Streptozotocin Induced Male Diabetic Rats}, journal = {Pharmacognosy Research}, volume = {1}, year = {2009}, month = {January 2010 }, pages = {314-319}, type = {Original Article}, chapter = {314}, abstract = {

The prevalence of diabetes mellitus (DM) has continued to grow over the past decade, and it is an important cause of organic impotence. In the present study we investigated the effect of hydroalcoholic extract of tubers of Chlorophytum borivilianum (CB) in alleviating the diabetic impotency in rats. Male wistar albino rats were classified into two groups as normal control and diabetic group. Normal control group rats were injected with 0.1 M citrate phosphate buffer (0.1 ml, i.p) while in diabetic group, DM was induced by intraperitoneal injection of streptozotocin (STZ; 60 mg/kg) freshly dissolved in 0.1 M citrate phosphate buffer (pH 4.5). On confirming the diabetic state, the rats in diabetic group were individually tested for sexual potency by pairing them with pro-oestrus female rat. Diabetic rats showed a significant decline in the sexual potency as compared to the normal control groups. Following this, the diabetic rats were divided into four groups and treated orally as: diabetic control group with distilled water 2 ml/day, CB-100 group with CB 100 mg/kg/day, CB-300 group with CB 300 mg/kg/day and standard group with sildenafil citrate 4 mg/kg/day for 14 days. Their sexual behavior was evaluated on 15th day by pairing with a pro-estrous female rat and evaluated for CB, at 100 mg/kg, for sexual vigor and sexual arousal as compared to diabetic control rats. The study revealed dose dependent improvement in all the parameters of sexual behavior were enhanced against diabetic control group, reflecting increased potency.

}, keywords = {Diabetes mellitus, Hlorophytum borivilianum, Impotency, Streptozotocin}, doi = {Nil}, author = {Vyawahare N.S and Kagathara V.G and Kshirsagar A.D and Rajendran R and Patil M.N and Jagtap A. A and Sadar S. S} }