Effect of Terebinthus atlanticus on Glucose Metabolism in Diabetic Rats

Preclinical Study of the Antidiabetic Effect of Traganum nudatum in Diabetic Rats

AIMS

The aim of the study was to study the antidiabetic effect of Traganum nudatum in an animal model of diabetes.

BACKGROUND

Traganum nudatum (T. nudatum) is a medicinal plant widely used in folk medicine by the Moroccan population to treat various diseases including diabetes.

OBJECTIVE

The objective of the study was to evaluate the antihyperglycemic and hypoglycemic of the aqueous Traganum nudatum extract in normal and streptozotocin-induced diabetic rats.

METHODS

Normal and streptozotocin-induced diabetic rats were treated orally by the extract of Traganum nudatum (T. nudatum) at a dose of 50 mg/kg. The blood glucose levels were determined for 6 hours and 15 days during this treatment. The oral glucose tolerance and phytochemical tests and the analysis of histopathological changes of the liver were performed. The antioxidant activity of aqueous T. nudatum extract was also assessed using the method of trapping of free radical 2,2- diphenyl-1 picrylhydrazyl (DPPH).

RESULTS

T. nudatum Aerial Part Aqueous Extract (TNAPAE) reduced the blood glucose levels in both normal and diabetic rats. The results demonstrated that TNAPAE treatment exhibited a significant hypoglycemic effect without altering the body weight. In addition, a noticeable influence on glucose tolerance was also observed after TNAPAE treatment. Moreover, TNAPAE was able to exhibit a beneficial effect on the histological structure of the liver. Finally, a potential antioxidant effect has been shown in vitro.

CONCLUSION

In conclusion, this study demonstrates the antihyperglycemic and hypoglycemic effects of T. nudatum in rats supporting its traditional use for the management of diabetes.

Antihyperglycemic and Antidyslipidemic Activities of the Aqueous Salvia hispanica Extract in Diabetic Rat

AIMS

The study targeted to evaluate the antihyperglycemic activity of Salvia hispanica.

BACKGROUND

Salvia hispanica L. (Lamiaceae) is a medicinal plant with many beneficial properties on human health.

OBJECTIVE

This objective of the study was to investigate the antihyperglycemic effect of the aqueous extract of Salvia hispanica (S. hispanica) seeds and its capacity to improve lipid profile in normal and STZ-induced diabetic rats.

MATERIAL AND METHODS

The seed aqueous extract of S. hispanica (SHSAE) at a dose of 100 mg/kg was administered orally in normal and diabetic rats. The effect of oral SHSAE treatment on blood glucose and lipid levels during 15 days was assessed in normal and streptozotocin-induced diabetic rats. The oral glucose tolerance test (OGTT) was carried out. The antioxidant activity of SHSAE was also examined.

RESULTS

The decrease of glycemia in rats following the administration of the plant extract suggested that the studied extract possesses antidiabetic effect. The extract of S. hispanica produced hypolipidemic effect with a significant lowering effect on plasma total cholesterol levels and increase on HDL-cholesterol levels. SHSAE was also able to enhance glucose tolerance using OGTT. Moreover, SHSAE possess a potential antioxidant effect in vitro.

CONCLUSION

In conclusion, this study demonstrates the antihyperglycemic and antilipidemic effects of SHSAE in rats.

Flavonoids Extracted from Asteriscus graveolens Improve Glucose Metabolism and Lipid Profile in Diabetic Rats

AIMS

This study aimed to evaluate the antidiabetic and antihyperlipidemic effects of Asteriscus graveolens.

BACKGROUND

Asteriscus graveolens (Asteraceae) is a medicinal plant widely used by the Moroccan population to treat various diseases, including diabetes.

OBJECTIVE

This work aimed to assess the capacity of flavonoids extracted from Asteriscus graveolens (FEE) to improve diabetes mellitus and dyslipidemia in normal and STZ-induced diabetic rats.

METHODS

Flavonoids were extracted from A. graveolens using the Soxhlet apparatus and using different organic solvents. Normal and streptozotocin-induced diabetic rats were treated orally by the extract of A. graveolens at a dose of 10 mg/kg. The oral treatment during 15 days was used to evaluate the effect of the flavonoids extracted from A. graveolens on blood glucose level and lipid profile in normal and diabetic rats. The oral glucose tolerance test, as well as the analysis of the histopathological examination of the liver, was performed. The antioxidant activity of FEE was also assessed by the method of trapping of free radical 2,2-diphenyl-1 picrylhydrazyl (DPPH), in order to estimate the mechanisms of action involved by FEE to improve hyperglycemia and lipid profile in normal and diabetic rats.

RESULTS

FEE reduced serum glucose concentrations in both normal and diabetic rats and exhibited lowering total cholesterol and triglycerides effects as well as improvement of the HDL-cholesterol serum level in the last group. In addition, a remarkable influence on glucose tolerance was also noticed after FEE treatment. Moreover, FEE was able to improve the histopathological status of the liver and was found to possess a potent antioxidant effect in vitro.

CONCLUSION

In conclusion, this study demonstrates the hypoglycemic and antihyperlipidemic effects of FEE in rats and supports its traditional use for the management of diabetes.

Antihyperglycemic and Antihyperlipidemic Effects of Lippia citriodora in Rats

AIM

The study was conducted to assess the antidiabetic and antihyperlipidemic effects of Lippia citriodora.

BACKGROUND

Lippia citriodora Kunth (Verbenaceae) is a medicinal plant with many traditional uses.

OBJECTIVE

The goal of this study was to investigate the antidiabetic activity of aqueous extract of Lippia citriodora and its capacity to improve the lipid profile in diabetic rats.

METHODS

Normal and diabetic rats were treated orally for 15 days by the leaves aqueous extract of Lippia citriodora (LCLAE) (100 mg/kg). The whole glucose utilization and liver architecture were also evaluated. The in vitro antioxidant activity of LCLAE was also assessed.

RESULTS

LCLAE lowered blood glucose and lipid levels in all groups. Moreover, LCLAE ameliorated the liver structure and exhibited antioxidant activity.

CONCLUSION

In conclusion, this study demonstrates the hypoglycemic and antihyperlipidemic effects of LCLAE in rats.