Elucidation of anti-hyperglycemic activity of Psidium guajava L. leaves extract on streptozotocin induced neonatal diabetic Long-Evans rats (original) (raw)
Related papers
Effect of Ethanolic Leaf Extract of Psidium guajava Linn. (Guava) in Alloxan-Induced Diabetic Rats.
British Journal of Pharmaceutical Research., 2017
Effect of water – soluble components of ethanolic leaf extract of Psidium guajava Linn. on blood glucose and cholesterol levels in alloxan-induced diabetic male albino wistar rats was evaluated. A total of 30 male albino wistar rats were randomized into 4 groups. Ten (10) animals each were randomly assigned to groups 1 and 2 and 5 each for groups 3 and 4. Group 1 animals were induced with 150 mg of alloxan/kg body weight of animal, after which they were administered 400 mg of extracts/kg body weight of animal. Group 2 animals serving as diabetic control were administered only 150 mg of alloxan/kg body weight of animal, no extract was given. Group 3 animals received only 400 mg of extract/kg body weight of animal while Group 4 animals served as normal control and were given distilled water in place of the extract. Extracts were administered twice daily and treatments lasted for 10 consecutive days. Blood samples were collected for analysis every two days from the tail tips of the rats. Results obtained showed that there were significant (p < 0.05) reductions in blood glucose and cholesterol levels in the diabetic treated rats (Group 1) when compared with the diabetic control rats (Group 2). However, administration of the extract did not show any hypoglycaemic effect on the normal rats (p ˃ 0.05) compared with the control. The results suggest that leaf extract of P. guajava Linn. is antihyperglycaemic and not hypoglycaemic. In view of the fact that it also showed significant antihypercholesterolaemia, P. guajava Linn. may be a potential antidiabetic agent.
The Egyptian Journal of Hospital Medicine
The present aim is to evaluate the anti-diabetic effect of aqueous extract of guava (Psidium guajava) leaf using rat model of diabetes induced by streptozotocin. In addition, the effect of this extract on liver and kidney functions induced in rat model of diabetes were investigated. Material and Methods: Rats were divided randomly into: control group, rat model of diabetes induced by streptozotocin, rat model of diabetes treated with aqueous extract of guava leaf, rat model of diabetes treated with glibenclamide and rat model of diabetes treated with aqueous extract of guava leaf plus glibenclamide. Result: In the present rat model of diabetes a significant decrease in the serum insulin level and a significant increase in glucose level were detected. Streptozotocin induced a significant increase in the activities of AST, ALT, ALP and a significant increase in the levels of bilirubin, urea, creatinine and uric acid. In addition histopathological and immunological changes were detected in the pancreatic tissue. The present data revealed that aqueous extract of guava leaf improved the reduced insulin level and the high glucose level induced by streptozotocin. This was associated with an improvement in the changes in the liver and kidney functions. Loss of body weight gain induced by streptozotocin was alleviated by guava leaf extract, glibenclamide or both. Conclusion: According to the present findings it could be concluded that the aqueous extract of guava leaf has a potent anti-hyperglycemic effect on rat model of diabetes induced by streptozotocin with hepatic and renal protective effects.
Journal of Basic Medical Veterinary, 2024
Background:The chronic disease known as diabetes mellitus is brought on by either the pancreas's inability to make enough insulin or the body's inability to use it. Purpose:This plant finds applications for treating diarrhea, dysentery, gastroenteritis, hypertension, diabetes, caries and pain relief. Purpose:The current study aimed to determine how Psidium guajavafruit extract affected the blood glucose, body weights, and insulin levels of streptozotocin (STZ)-induced diabetic rats over 21 days. Methods:The extract's effectiveness was compared to that of glibenclamide, a common hypoglycemic medication. 30 male Wistar albino rats were divided into 5 groups with 6 animals in each group. V: Normal control (Group-I), diabetic control (Group-II), diabetic rats treated with glibenclamide 0.6mg/kg bw (Group-III), diabetic rats treated with Psidium guajavafruit extract 200 mg/kg bw (Group-IV) and Psidium guajavafruit extract 400 mg/kg bw (Group-V). All group of rats were subjected to evaluation of body weight, blood glucose and serum insulin levels on day 0, 7, 14 and 21 of the experiment. Results:There was significant (P<0.05) decrease in body weight and serum insulin and significant (P<0.05) increase in blood glucose level in Group-II compared to Group-I rats. In the Present study, daily oral administration of Psidium guajavafruit extract at dose rate of 200 and 400 mg/kg bw and glibenclamide at 0.6mg/kg bw in diabetic rats for 21 days showed a progressive improvement in body weight, blood glucose and serum insulin concentration. Conclusion:It can therefore be concluded the results of this study indicate that Psidium guajavafruit extract possesses anti-diabetic properties in Wistar albino rats
Anti-hyperglycaemic potential of Psidium guajava raw fruit peel
The Indian journal of medical research, 2009
This study was undertaken to evaluate the glycaemic potential of aqueous extract of Psidium guajava unripe fruit peel on blood glucose level (BGL) of normal and streptozotocin induced mild and severely diabetic rats as an extension of our previous work carried out on Psidium guajava ripe fruit peel. The aqueous extract of P. guajava unripe fruits was prepared. Male 6-8 wk old albino Wistar rats were selected for the experiments. Diabetes was induced by streptozotocin infection. Blood glucose levels were measured by glucose oxidase method. Antihyperglycaemic activity of the extract was assessed in mild and severely diabetic rats. The maximum fall of 21.2 per cent (P<0.01) and 26.9 per cent (P<0.01) after 3 h of glucose administration during glucose tolerance test (GTT) was observed in BGL from a dose of 400 mg/kg, identified as the most effective dose, in normal and mild diabetic rats respectively. In severely diabetic rats the maximum fall of 20.8 and 17.5 per cent in fasting ...
Plant Foods for Human Nutrition, 2010
Hyperglycemia causes increased protein glycation and the formation of early glycation products and advanced glycation end products (AGEs) which are major factors responsible for the complications associated with diabetes. The aim of the present study was to investigate the antioxidant as well as antiglycative potential of ethyl acetate fraction of guava leaves. Oral administration of the extract at different doses showed a significant decrease in blood glucose level. It also showed an improved antioxidant potential as evidenced by decreased lipid peroxidation and a significant increase in the activity of various antioxidant enzymes such as catalase, superoxide dismutase, glutathione peroxidase and glutathione reductase. Glycated hemoglobin as well as fructosamine which are indicators of glycation was also reduced significantly in treated groups when compared to diabetic control. In vitro studies also support the antioxidant as well as antiglycative potential of guava leaves.
Anti-hyperglycemic Activity of Psidium guajava Bark Extract
Journal of Natural Remedies, 2004
Objective: To evaluate the anti-hyperglycemic activity of water extract of Psidium guajava stem bark. Materials and methods: The water extract of stem bark of Psidium guajava was tested for its hypoglycemic activity in normal glucose loaded and alloxan-induced hyperglycemic Wistar rats. Blood glucose levels were evaluated at intervals of 30 and 90 minutes in normal glucose loaded animals, at intervals of 0, 1 and 3 h in acute study and at days 1, 3, 7 and 10 during sub acute treatment after extract administration at an oral dose of 250 mg/kg. Results: During both acute and sub-acute tests, the water extract showed statistically significant and considerable anti-hyperglycemic activity and enhanced glucose tolerance in normal glucose loaded rats. Conclusion: Psidium guajava stem bark possessed statistically significant anti-hyperglycemic potential in alloxan induced diabetic rats and enhanced glucose tolerance in glucose loaded normal rats.
Anti-hyperglycemic Effect of Psidium guajava Leaf Infusion
Althea Medical Journal, 2015
Background: Prevalence of diabetes mellitus is estimated to increase annually. Numerous people use traditional medicine, such as the Psidium guajava leaf to prevent this disease. This study aimed to analyse the effect of Psidium guajava leaf to inhibit glucose absorption in intestine epithelial membrane of wistar rats. Methods: This laboratory experimental study used 5 wistar rats as subjects in the Laboratory of Biochemistry at Padjadjaran University from 10−26 October 2012. All rats were given three solutions by in situ perfusion method. The first was 25 ml 3.0 X 10-3 M glucose solution, the second was 25 ml 3.0 X 10-3 M glucose solution with 1 ml Psidium guajava infusion added, and the third was 25 ml 3.0 X 10-3 M glucose solution. The sample from each solution was taken five times at 0, 15, 30, 45, and 60 minutes after the solutions were given. The spectrophotometer was to quantify the concentration of glucose from the samples. Data were analyzed using Friedman and Wilcoxon test. Results:The means of glucose concentration for each solution from the first solution to the third were 6.126 mg/dl, 2.447 mg/dl, and 5.345 mg/dl. The probability value showed significant difference between the first and second solutions (p ≤ 0.05). Conclusions: Psidium guajava leaf infusion can inhibit glucose absorption in wistar rat intestine and the effect is reversible.
Pakistan BioMedical Journal, 2021
The growing number of diabetes coupled with the harsh side effects of some synthetic drugs has led to the increasing search for alternative medicine which are relatively cheap with minimum side effects. Objective: To investigate the anti-diabetic effect of ethanolic extract of Carica papaya and Psidium guajava extracts separately and in combination, and the effect of treatment on hepato-renal performance. Methods: Papaya and guava leaves were macerated in 98% ethanol for extraction. Results: The result showed that ethanolic leaf extract of P. guajava and C. papaya significantly (P< 0.05) reduced blood glucose level, Total Cholesterol (TC), triglycerides (TG), low density lipoprotein (LDL) and significant increase in high density lipoprotein (HDL) as compared to diabetic control group. Serum activities of liver enzymes such as aspartate aminotransferase (AST), alkaline phosphatase (ALP) and alanine aminotransferase (ALT) was slightly elevated that indicate hepatotoxic nature of pl...
Over the past decade, herbal medicine have been accepted universally and they have an impact on both world health and international trade. Diabetes mellitus is a metabolic disorder in the endocrine system. Plants provide a potential source of hypoglycemic drugs and are widely used in several traditional systems of medicine to prevent diabetes.Qualitative phytochemical analysis of aqueous extract of flower of psidium guajava was carried out with a view of developing leads for a new therapeutic products. The study was designed to investigate the hypoglycaemic effects of oral administration of aqueous extracts of psidium guajava flower in alloxan induced diabetic rats. After oral administration of the flower extract to diabetic rats, the blood glucose level significantly reduced, which is much faster and more than that of metformin. The aqueous extracts of flower of psidium guajava significantly reduced plasma glucose, creatinine, urea, AST, ALT, ACP, ALP, LPO, glucose-6- phosphatase and fructose1,6 bisphosphatase but increased level of serum insulin, protein, CAT, SOD, glycogen synthase and hexokinase. For all the above biochemical parameters observed and it was reverted toits normal level after flower extract treatment. The present investigation suggests that flowers of psidium guajava exhibit hypoglycaemic activity in alloxan induced diabetes in experimental rats.
2021
In Nigeria, rural inhabitants often resort to herbal remedies and dietary control for the treatment and management of various forms of diabetes mellitus. This study was conducted to provide the rationale for the use of Psidium guajava leaves as a potent traditional antidiabetic remedy. The crude leaf extracts of n-hexane, methanol, and ethyl acetate of Psidium guajava were separately prepared by cold maceration. Then, the ethyl acetate crude extract of Psidium guajava leaves was fractionated by column chromatography to yield ethyl acetate bulked fractions: EF-I (1–75), EF-II (76–150), and EF- III (151–250). The n-hexane, ethyl acetate, and methanol crude leaf extracts and ethyl acetate bulked fractions (EF-I, EF-II, and EF-III) were evaluated for antidiabetic activity in alloxan-induced diabetic mice. The blood sugar levels of treated and untreated alloxan-induced diabetic mice were assayed as indices of antidiabetic effect. The phytochemical constituents of both crude extracts and ...